bluuebunny/crossref_metadata_2025 huggingface dataset:
Monitoring of Deformation Laws of Deep Excavation in Metro Station
Authors: Li Qing Yuan
Published: September 2011

Combined with the Engineering environment and the requirements of construction of the deep foundation of metro station of South Gate in Xi'an, and in accordance with the basic methods and the basic principles of the monitoring of the construction of deep foundation, it gives a monitoring program of the deformation of the deep foundation pit and researches on in-site monitoring for the deformation of deep foundation, to ensure the safety of metro station construction. At the same time, it focuses on an analysis of the horizontal deformation of the retaining piles and the axial force of steel support, to provide a reference for the similar engineering information construction in the future.
Microorganism Precipitation in Enhancing Concrete Properties
Authors: Afifudin Habulat , Hamidah Mohd Saman , Noor Hana Hussain , Kamaruddin Kartini
Published: September 2011

Microorganism is an unique living element and has the ability to precipitate minerals through the process of biomineralisation. The precipitation process occured naturally and most of the precipitated products are very important compound composed of such as carbon, nitrogen, oxygen, sulphur, phosphorus and silica. So far, concrete incorporated with microorganism that able to precipitate calcium carbonate (calcite) was reported. However, little information on silica precipitation and its effect on concrete properties has been revealed. In this present study, the concrete specimens were incorporated with Bacillus subtilis silica adsorbed in their cell wall. Concrete specimens with five different concentration of Bacillus subtilis cell which are 104, 105, 106 and 107 cell/ml and control (without Bacillus subtilis) were cast. The experimental investigation aims to prove that the silica precipitated by this microorganism can enhance the concrete properties namely its compressive strength and resistance to carbonation. The microstructure of the concrete contained Bacillus subtilis was also examined. It appears that the inclusion of Bacillus subtilis into the concrete enhanced the compressive strength. The concentration of 106 cell/ml was found to be the optimum concentration to give most enhanced effect to the compressive strength. However the effect of including Bacillus subtilis to the resistance to carbonation of the concrete specimen is found to be insignificant.
Study on the Utilization of FBC Ashes as Cement Admixture
Authors: Liu Jing Xiang , Song Yuan Ming , Xu Hui Zhong , Ma Yu Long , Yue Yu Bo , Zhang Li Hua
Published: September 2011

Compared with ordinary Pulverized Coal Combustion (PC) fly ashes, Fluidized Bed Combustion (FBC) ashes have some special properties. The effect of FBC ashes content on the strength of cement mortar was studied, and the physical properties of FBC ashes-cement mortar with 30% FBC ashes were also investigated. The results show that the flexural and compressive strength at 7 and 28 days of the mortar gradually decreases with the increase of FBC ashes content. Under the same dosage, the strength of FBC ashes-cement mortar is greater than that of PC fly ashes-cement mortar. The FBC ashes-cement system presents a normal setting time but poor soundness with more than 3.5% SO3. This work confirms that the properties of FBC ashes-cement system are superior to those of PC fly ashes-cement system when SO3 content is no more than 3.5%.
Stability and Safety Analysis of Braced Excavation for Subway Station during Construction under the Condition of Side Slope
Authors: Li Yuan Hai , Liu Ping , Liu Ji Qiang , Han Xue Feng
Published: September 2011

The main purpose of this paper is to analyze the stability and safety problems of braced excavation enclosure, surrounding strata and side slope during construction of Shangshuijing station in Shenzhen Metro Line 5. The paper presents stability discrimination of the braced excavation and side slope by discussing their force and deformation regularity using Flac3D, and puts forward some project proposals about its design and construction. The results show that: (1) The stability coefficient of braced excavation enclosure becomes smaller because of biasing impact of side slope, but this project can meet the stability requirements, (2) The biasing impact of side slope has little influence on deformation of surrounding strata starting on the other side of braced excavation without slope, and (3) To ensure construction safety under condition of side slope, the braced excavation should be excavated starting from the zone far from the side slope, steel pipe can be used as assistant reinforcement at the corner of side slope if necessary.
Static Model Test on Fly Ash Embankment of Expressway
Authors: Ge Yan Hui , Cui Wei , Wang Wen Juan
Published: September 2011

The usage of fly ash in constructing expressway is more and more extensive and the technology of constructing is becoming to more and more mature. But the stability and failure mode of the embankment is lack of researches. In order to study the stability and failure mode of the embankment, the plan for the study of the static model test of light fly ash embankment was designed, in which the model material was selected based on the similarity principle of the model test. The mechanical characteristic under static load is simulated. The internal force, the relationship between the stress and load, the displacement and load of different depth of the embankment were obtained through the test. The deformation and mechanical characteristic is studied and the influence of concrete pavement is also considered. The experimental results show that the high filling subgrade has an excellent stability and high bearing capacity and the influence of the concrete pavement is relatively large.
Application of Rare Earth Elements for Water Source Discrimination in Renlou Coal Mine, Northern Anhui Province, China
Authors: Sun Lin Hua
Published: September 2011

Rare earth element (REEs) concentrations were measured for groundwater and wall rock samples from two aquifers (sandstone and limestone aquifers) in Renlou coal mine, northern Anhui Province, China. The results indicate that groundwater from these two aquifers are rich in REEs as expressed by their Nd concentrations (0.012 and 0.008 μg/L). They all show heavy REEs enrichment with low NdRN/YbRN ratios (0.35 and 0.40) when normalized to their aquifer rocks. Y- Ho fractionation are only observed for groundwater from limestone aquifer with high Y/Ho ratio (97 in average), whereas groundwater from sandstone aquifer have low Y/Ho ratios (24 in average). The former is considered to be related to the release of Y and Ho from calcite with different partition coefficient. The similarity of some REEs between groundwater and aquifer rock, as well as the different rock composition of aquifers, provide possibility for discrimination of water sources by using REEs, and Y/Ho ratios and Eu anomalies are expected to be useful in Renlou coal mine.
Research on Grey Evaluation for the Port Security and Risk
Authors: Zhang Shu Kui , Lu Ziai
Published: September 2011

This paper puts forward the normal system for evaluating the port security and risk according to the human-machine-environment theory of system, then using Grey system and AHP designs the specific evaluation model to evaluate the port security and risk .An example is given to show the feasibility of the model.
Effect of Admixture on the Frost Resistance of Steam-Curing Concrete
Authors: Liu Hong Fei , Ma Xian Wei , Huang Fa Jun
Published: September 2011

The effects of polycarboxylate superplasticizers, naphthalene-based superplasticizers and SJ-2 air-entraining agent on the frost resistance of C50 concrete under steam-curing were studied by a rapid freezing-thawing method.The frost resistances of concrete under three different temperature condition curing are compared. The results show that the polycarboxylate superplasticizer concrete is more suitable to steam curing and has better frost resistance than naphthalene-based, especially under a low temperature steam-curing condition. When the SJ-2 air-entraining agent was added to polycarboxylate superplasticizer concrete, the frost resistance of concrete has been further improved. When the steam curing temperature is too high, the frost resistance of concrete with admixture is not improved.
Glass Fiber Reinforced-Polymer (GFRP) Bar Reinforced Concrete Deck Slab: Strength and Serviceability
Authors: Huang Jian Wei
Published: September 2011

This paper presents the study on GFRP bar reinforced concrete bridge deck that is designed as typical one-way concrete slab. Parametric study of deck thickness, girder spacing, and environmental reduction factor was performed, on the basis of requirements per ACI 440.1R-06 guideline, from which the results show that design of GFRP RC deck is controlled by the cracking serviceability but not the ultimate flexural moment.
Sustained Load Effect on GFRP Bar Reinforced Concrete Deck
Authors: Huang Jian Wei
Published: September 2011

This paper presents the investigation of sustained stress level in GFRP bar used as main reinforcement in typical reinforced concrete bridge deck, which is often subject to severe environmental exposures in North America. AASHTO LFRD approach is used for the design of GFRP RC deck that also meets with the requirements per as specified in ACI 440.1R-06. Research results show that the sustained stress level in GFRP bar varies in the range of approx. 3% -7% for bridge deck with various deck thickness and girder spacing.
Strength and Durability of High Performance Road Concrete Containing Ultra-Fine Fly Ash
Authors: Li Yi Jin , Gong Yun Li , Yin Jian
Published: September 2011

This paper presents the influence of ultra-fine fly ash on the strength development and durability characteristics of high performance road concrete. The durability of high performance road concrete is investigated including the permeation resistance under hydraulic pressure, the resistance to rapid freezing and thawing, the wear resistant ability and drying shrinkage. Results on compressive strength and strength development of high performance road concrete are also obtained with the main variables being the partial replacements of cement by ultra-fine fly ash of 20%, 30% and 40% by weight of binder material and the binder material of 360kg/m3 and 400 kg/m3. The test results indicate that the use of ultra-fine fly ash as cement replacement leads to a significant improvement of high performance road concrete resistance to permeation and rapid freezing and thawing. The later compressive strength of concrete containing ultra-fine fly ash is also found to be significantly higher than that of control concrete. The wear resistant ability of high performance road concrete is significantly higher than that of control concrete with similar workability. The high performance road concrete also shows the lower drying shrinkage.
Software Development of Large-Span Structure Hoisting on the Time-Varying Analysis
Authors: Jiang Xiao Yan , Wan Hai Ying , Wang Jian Guo
Published: September 2011

According to the time-varying analysis theory of large-span structure hoisting, the structure transformation matrix around three-dimensional translation and rotation is obtained. Based on the obtained transformation matrix, the final state matrix after structure hoisting can be described, and the structural internal force of any position can be calculated. Using the Coin3d Open Inventor that is an open source graphics development kit, developers exploited simulation software of large-span structure hoisting. The software can analyze structural security with the time-varying analysis theory, and it has been applied in the simulation of hoisting construction at the Hefei Xinqiao international airport. The results indicated the software is reliable to protect safety of structure hoisting.
Critical Analysis of Recycled Aggregate and Concrete with Recycled Aggregate
Authors: Deshpande Neela , Kulkarni S.S
Published: September 2011

One of the construction sector's major contributions to the preservation of the Environment and sustainable development is the reuse and recycling of the waste materials it generates (reducing, reusing, recycling and regenerating the residues that originate the constructive activity). With this view an experimental program was undertaken which helped in judging the effectiveness of using Recycled aggregate in concrete ,by assessing the properties of Recycled aggregates – Coarse and Fine. Further with the guidance of IS 10262:2009 ,Concrete mix was designed for 28 day compressive strength as 25N/mm2 using conventionally used aggregates and Recycled aggregates. From economy perspective an attempt was made to use superplasticser to reduce cement consumption. With reference to the experimental results, analysis of important properties of both the types of concrete is done and the suitability of use of recycled concrete aggregate for new concrete is judged.
The Exploring for the Concept of History and Culture on City Square Design - Exampled by Lanzhou City
Authors: Meng Xiang Wu , Ye Ming Hui , Zhang Han , Zhou Qi
Published: September 2011

For thousands of years, Lanzhou city has long history and bright culture, and has numerous historic buildings and cultural relics. But with the rapid development of the city, many cultural heritages had been destroyed. The cities appearance are becoming more and more similar, urban culture roots has not clear, the city began to become unfamiliar. The reason is the local residents have a lack of cultural identity to living environment. City square, as a major public urban space. By a sense of spiritual civilization, it should be a window of the city and essential building space to daily life of local residents; it also bears an important responsibility which is heritage city in cultural context. Based on the Yellow River in Lanzhou City, and the study of the new square design concept, analyzed and summarized, presented the concept of square design to create a historical and cultural context of urban culture, the importance of heritage and modern artistic expression should be united with urban history and culture diversity, to make people re-establish the cultural identity for the city to gain ownership in their spirit.
Study on Sudden Water Pollution Incidents of Guangdong Huanggang River
Authors: Zhang Yong Li , Xiao Min , Zheng Wei Hao
Published: September 2011

Sudden water pollution incidents are incidents that the pollutants affected by some unexpected factors following into water bodies, resulting in contamination of water resources within a short period, which will lead to emergencies of adverse impacts on society. According to the ways of pollutants following into water bodies, sudden water pollution incidents could be classified into four categories. Sudden water pollution incidents have potentially risks, and some positive approaches should be adopted to control them. Those have been discussed in the research that three sudden water pollution incidents having taken place in Huanggang River basin and their treatment measures, and the four hidden pollution hazards existing in Huanggang river basin have been analyzed.
Statements of Historical Memories - The Detail Planning and Design of Zhang Xiangwen’s Former Residence
Authors: Hao Jun Hong , Zhou Fan , Liu E Dong
Published: September 2011

This paper made an example of Zhang Xiangwe’s former residence (which in Siyang County, Jiangsu Province). Through the meaningful exploration of the environment and the spiritual significance of architectural form, this paper tried to carry out more spiritual meaning of monumental buildings and make a positive reference of the protection and development of today’s celebrity’s former residence.
The Performance and Mechanism of Waste Tire Crumb Rubber Modified Asphalt
Authors: Li Yan Chun , Zhang Pan , Lv Rui
Published: September 2011

Crumb rubber modified asphalt can not only improve asphalt pavement performance, but also can achieve the waste re-use, further study on the crumb rubber modified asphalt is very important. This paper mainly discusses the action mechanism of waste tire rubber modified asphalt, and analysis the performance improvement of the asphalt when it is mixed with the waste tire rubber. By analyzing the test results of asphalt’s conventional, we find out that mixed the waste tire rubber in asphalt is the resulting in the improvement of asphalt’s performance. Lastly, it discusses waste tire rubber modified asphalt advantages and the prospects of development. Overall, popularize and application the asphalt-rubber mixture is valuable.
Experimental Study on Durability of Air-Entrained Concrete of Qingdao Bay Bridge
Authors: Yang Qian Rong , Guo Bao Lin , Yang Quan Bing , Li Qi Qian
Published: September 2011

The permeability, frost-resistance and deicer-frost resistance of air-entrained concrete of Qingdao Bay Bridge were studied. The results show that frost-resistance and deicer-frost resistance of concrete can be enhanced by a big margin and impermeability of concrete can be also improved by appropriate air-entrainment. The frost-resistance and deicer-frost resistance of concrete samples gathered from site were inspected and they can meet the design demand for durability of concrete Qingdao Bay Bridge.
Durability of Green High Performance Alkali-Activated Slag Pavement Concrete
Authors: Wu Yong Gen , Cai Liang Cai , Fu Ya Wei
Published: September 2011

Green high performance alkali-activated slag pavement concrete(ASC) was prepared by adding Na2SiO3 and NaOH complex activator in slag. Physical, mechanical performance and durability of ASC were studied by workability, strength, hydrostatics and chlorin ion penetrability, fast freeze-thaw cycle tests and abrasion resistance tests. The results show that slump of ASC exceeds 160mm, fluidity and workability is excellent. 28d compressive and flexural trength of AAC are 91.9MPa and 8.5MPa, 7d compressive and flexural strength are 84.8MPa and 7.6MPa, which belongs to high–early strenth concrete. And its impermeability rank exceeds S40, chlorin ion impermeability is excellent, 6h eletricity is 1751～1894 coulomb, and its anti-frozen rank exceeds F300, which can meet the anti-frozen requirements in frore area. Depth of abrade slot is 0.45～0.96mm, abrasion resistance of ASC is 4.99, so its physical, mechanical performance and durability are superior to traditional portland concrete.
Curved Surface and Material Design and Construction
Authors: Yu Xi Fa , Li Ci Xiang , Lin Jing
Published: September 2011

Abstract: The application of curved surface is more and more popular in various kinds of engineering, for different curved surfaces ,because the form and formation way of their generatrix form are different, the surface properties are also different[1,2],so the relevant materials used must match with them too. As a designer, when he/she designs the curved surface, while in pursuit of the perfect modeling, he/she must take the scientific structure in consideration as well, so as to convenient for construction; As a constructor, he/she must fully understand the curved surface’s character, rasp the mechanism, and then use a scientific and simple technique to achieve a perfect structure modeling.
Prediction of Station Passenger Flow Volume Based on Fractal Theory
Authors: Tian Qing Fei , Zhao Shu Zhi , Cao Yang
Published: September 2011

In order to seek the distribution rule of station passenger flow and discuss research methods of public transport based on station, prediction model of station passenger flow volume was proposed with the fractal theory. Firstly, it used correlation dimension to establish a time series forecasting model, which analyzes the time distribution rule of station passenger flow with the phase space reconstruction theory. Finally, it took the stations of Route 255 in Changchun as example, which used the time series forecasting model to forecast the station passenger flow volume at moments. It is shown that the model obtains a less error and a greater application value.
Research on the Outdoor Microclimate of Cold Residence
Authors: Zhang Jiu Hong , Wang Na , Guo Xu
Published: September 2011

Research on multiple settlements in Shenyang and the residential areas and ecological areas of Shenyang Jianzhu University, testing the underlying surface material surface temperatures by infrared thermometer and testing the solar radiation by bolometer. Study different material surface temperatures variation. Explore the physical properties of materials effect on the microclimate and draw the appropriate conclusions.
Application of Improved Safety Inventory Quantity in Building Construction
Authors: Chen Xiang , Zhou Xue Feng , Hou Wei
Published: September 2011

Safety inventory quantity computation based on Collaborative Planning Forecasting & Replenishment (CPFR) can avoid uncertainty of material supply in building construction, which can also coordinate relationship between supplier and construction side to reduce inventory cost and to ensure the progress of construction. The paper analyzed systematically on relationship between lead time and safety inventory. Combining with application of CPFR and based on establishing good relation between material supplier and construction contractors, safety inventory level was reduced with management of lead time. Supply of material supplier was also coordinated to reduce uncertainty of inventory quantity. Construction application example based on improved safety inventory quantity method also proves the feasibility of the proposed method.
Evolution Process of Residential Xiaoyuan Space Forms over the Past 60 Years - The Case Study of Residential Xiaoyuan in Jiaodong Coastal Areas and the Rural Areas in Yantai Longkou
Authors: Fang Hui , Lv Jing Qing
Published: September 2011

As a large agricultural country, China has hundreds of millions of farmers. The residential Xaoyuan they live in has experienced vicissitudes of life year after year, but rarely has caused attention. In this paper, the 60 years evolution process of residential Xiaoyuan space forms after the liberation is analyzed and summarized. The development of residential Xiaoyuan forms has been listed. The problems are put forward in the residential Xiaoyuan.
Investigation and Analysis on Seismic Damages of Mountain Tunnels Subjected to Wenchuan Earthquake
Authors: Tao Shang Jiang , Gao Bo , Wen Yu Min , Zhou Xiang
Published: September 2011

Wenchuan earthquake of May 12 struck China with amazement in 2008, which inflicted the devastating destruction to the public transport infrastructures in Sichuan province. Generally speaking, underground structures have the stronger seismic resistance performance compared to ground-level structures. However, seismic disasters of mountain tunnels were fairly conspicuous after the earthquake. Based on the references about tunnel earthquake damages at home and abroad (Dowding and Rozen, 1978; Huo, 2005; Rozen, 1976; Youssef, 2001; wang, 2001), more attentions should be paid to the prevention and mitigation of tunnel seismic hazards under severe intensity earthquakes. This paper describes some typical earthquake damages to mountain tunnels during Wenchuan earthquake and presents the basic characteristics of the tunnel seismic damage as well. Meanwhile, the possible reasons for the seismic damage and the corresponding measures for relieving or resisting the damage are also given.
The Analysis of Geological Condition of Hada Mount’s Water Control Project
Authors: Tian Xiao Yan , Jiang Bo
Published: September 2011

It was contradiction obviously about water demand in western of Jilin Province. It would improve urban and rural life, industrial and agricultural production of the western region in Jilin owing to build the Hada mountain water-control project which can ensure water quality. This paper investigated the present situation of western resources of jilin province, on the engineering geology condition for a detailed analysis and evaluation.
Study of Properties of Concrete with Mineral Materials of Gangue
Authors: Meng Yun Fang , Sun Qing He , Ma Rui Ting
Published: September 2011

Abstract. This research was to enhance strength and durability of concrete in both design and construction with gangue. Particularly, the strength and performance of concrete is achieved by optimizing the gangue, fly ash and silica fume replacement for cement. The gangue has been used as a cementitious material. The many technical benefits available to concrete user, such as reduced heat evolution, lower permeability and higher strength at later ages, in order to increase resistance to sulphate attack and alkali silica reaction. A number of recommendations are given for the effective use of gangue and fly ash in concrete. The results show that 10% gangue, 15% slag, 15% fly ash, 10% silica fume of replacement was found to be an optimum level and demonstrated excellent performance in concrete. The paper is intended to provide guidance for those concerned with the design, application and performance of concrete with gangue in practice where gangue can also help to reduce costs and energy demands in the production of concrete compared with conventional Portland cement concrete.
Numerical Simulation on Real-Time Temperature Field and Strength Field of Bridge Mass Concrete
Authors: Zhu Chun Mei , Wang You Zhi , Yan Bin , Gao Hong Wei
Published: September 2011

Access to the internal concrete temperature of the instantaneous temperature field and the strength of the field Real-time monitoring , Concrete temperature field and stress field of the numerical simulation analysis method was proposed . Intuitive accurate prediction that the temperature field and stress field provide a reliable basis on the distribution of temperature control schemes and the construction scheme formulated.
Study on 3-D Flow Field of Concrete Volute Conduit of Circulating Water Pump in Nuclear Power Plant
Authors: Sun Xiao Bing , Qiao Xu Bin
Published: September 2011

As the largest unit capacity of nuclear power plant at present, the flow conduit of circulating water pump in EPR1750 nuclear power plant is a volute conduit, which is a cast-in-situ conceret structure with complexly gradual change cavity. Therefore, the hydraulic efficiency of circulating water pump is not only related with the design of pump leaves, but also closely related to the design of volute and the complicated spatial type of intake and outtake conduits. With the pump leaves and the intake and outtake conduits of conceret volute as the research model, based on computational fluid dynamics (CFD)and the three dimensional Reynolds averaged Navier-Stokes equations, an analytic model suitable for computation is established to simulate the three-dimensional steady flow in the whole pumping system under different operating modes. By use of the commercial fluid-computation softer ANSYS, the distribution of basic physic quantities in the fluid field inside the pump and the conduits is obtained. The analysis and prediction of the performance of pump system are made, and the spatial type design of intake and outtake conduits is evaluated. The calculation results can be referenced to improve the design of pump systems in the similar projects.
The Dynamic Responses of Anti-Slide Piles Reinforced in the Rubble Soil Landslide
Authors: Sun Feng , Kong Ji Ming , Cai Qiang , A Fa You , Cui Yun
Published: September 2011

Acoording to the servic eability limit state, use the numerical analysis the method, using the fiinte element analysis software to the elastoplastic and the big distortion on the power solidifies in the finite element model, by using above coupled non-linear numerical approach, the dynamic response of piles and the earthquake resistance reinforcement. A computation method of raft foundation is brought foward in which many factors are considered. The method corresponds to real foundation working conditions. The results indicated as follows: Under the earthquake load function, the slope and anti-slide piles displacement response was amplified as the seismic motion propagated upwards through the slope. The greater the earthquake acceleration, the larger the deformation of the anti-slide pile. And the displacements of the pile were decreased from top to bottom. The different elevational point of the dynamic moment in the change tendency is the same. the dynamic moment to increase along with the input earthquake wave acceleration increases. There were larger differences occurring in the maximum value of resistances on the partial pile lain in stable rockmass and resistance distribution forms with different accelerations in different times. The calculation indicates that the new method may better reflect the actual locating state and sliding process of debris landslide and anti-slide piles under earthquake.
A Study on the 3D Fine Model of a Large-Scale and Complicated Steel Truss Bridge
Authors: Wei Qun , Jiang Hua , Li Sheng Ji
Published: September 2011

The design and construction of the stiffening steel truss bridges is a complex and large-scale professional program. The abstract of the plans and the weaknesses of the view angles to the design sketch will also become limitations to the owners and the decision makers. Based on the project of River Baling Bridge of large stiffening steel truss girders, this study creates a three-dimensional fine model for it via CAD, pre-assembles each parts of the bridge, and checks sections and dockings one to one correspondingly. Data conversion of this model directly generates virtual visualized model. This visualized fine model of River Baling Bridge provides decision makers with a visual analysis platform, which also offers technical guarantee and support for sensible decision makings.
Isolation Mechanism and Method for Buried Segmental Pipeline under Earhquake-Induced Large Displacement
Authors: Tang Ai Ping , Wen Ai Hua , Gai Li Hua , Zhong Ru Hong
Published: September 2011

This paper deals with an isolation design methods of buried segment pipeline for large ground displacement in earthquake. The buried pipeline is always damaged due to the strong shaking and earthquake-induced large or permant ground displacement and deformation (PGD), including liquefaction, rock and soil slope failure, fault and fissure. Based on the seismic response analysis for buried segment pipeline, the isolation mechanism and an equipment for resisting ground displacement trigged by liquefaction and fault is presented in this paper. Some related parameters to isolation system like stiffness and damp of isolator, soil types and its displacement, depth of pipeline, are discussed for developing a reliable isolation system fitting the buried segment pipeline.
Research on the Springback Quantity of the Load Test on High-Speed Railway
Authors: Chang Ju You , Liu Zhi Jun
Published: September 2011

With the development of high-speed railway, roadbed reinforcement of its use of high strength prestressed concrete pipe pile, and reflected wave method with low strain and slow preloading method for integrity testing of the pile and pile load test, according to “Technical specification for testing of railway piles” TB10218-2008 requirements, slow static test of the maximum load of not less than 2 times the design load; pile field under construction, the pile placed on top of limestone , pile bearing stratum good features, especially more complete proposed limestone pile placed on top of limestone (rock) of the pipe, the static test pile to take the maximum load of 1.2 times the design load, and load and take Q-s curve of settlement, maximum springback quantity and the corresponding settlement is vertical bearing capacity characteristic value of single pile.
Reuse of Reclaimed Materials in Construction - From the Process Analysis of BedZED
Authors: Tang Hao , Hu Qi Guang , Xu Yan Yan , Yang Yang Hong
Published: September 2011

By analyzing the reuse ways of the reclaimed materials in BedZED project, the article concludes that operability and economic costs of construction restrict the reuse of the reclaimed materials, and it recommends increasing the construction operability by selecting materials that are easy to use and to refurbish, and it also recommends selecting a reasonable way to reduce construction costs.
Effect of Social Choice on the Chinese Urban Residential Space Planning
Authors: Yang Hui Wu
Published: September 2011

With the social and economic transformation, China's urban residential space has become more evident on differentiation between rich and poor, the rich class occupied the central city, the vulnerable groups was marginalized, social problems highlighted. Based on this, residential space planning should reflect the public properties to illustrate social equity and justice. This article based on research on urban social choice theory, analysis of urban social choice and social ecology, urban residential space is proposed countermeasures planning to achieve social choice and personal preference in choosing a blend of residential space.
Design and Analysis on the Function of Huge Underground Space in Modern City
Authors: Hu Zhi Feng
Published: September 2011

Since the begin of the 21st century, with the city construction scale expanding constantly, huge underground space has been an important trend of urban development, and will become one of the building types with modern cities symbol. On the other hand, the planning and designing of urban underground space function rationally are important ways to promote the urban functions. Combined with the project of Zhujiang Newtown CBD Underground Space in Guangzhou, the functional factors of huge underground space in modern city, and the design concept for modern urban huge underground space are discussed in this paper. At last, the function designs of Zhujiang Newtown CBD Underground Space are analyzed such as the innovation concept of underground traffic "minor cycle",the separation of pedestrians and vehicles, the sharing of space resource.
The Utilization of the Contrary Space Sequence Analytic Method in Modern Villages and Towns Planning Design
Authors: Yao Ping
Published: September 2011

The combination of the Contrary Space Sequence is the rule of the composition of landscape space which the majority historical towns followed. the charm of several hundred years’ ancient town space is just as before, all these are related to the ingenious composition of landscape space and long-term harmonious sustainable. The ancients have utilized the philosophy which integrated by Chinese traditional garden and the ideal condition, situation and the conditions of the object form calligraphy and painting in the construction of towns, Therefore in the modern town space is still deducting the scenery drawing of harmony between humans and landscape as before. The research of the contrary space sequence inherits this town landscape space building method, Carries forward the sustainable development idea of the traditional town construction, and applied to some present small towns and new rural planning, design and construction properly, to provide valuable reference for build a town or a new village with the true harmony between humans and natural world and a beautiful natural environment.
Protection Planning of Historical and Cultural City Based on the Concept of Disaster Prevention and Reduction
Authors: Hui Yu , Jian Qiu
Published: September 2011

Wenchuan earthquake caused the heavy losses in relation to a number of valuable historical and cultural cities in the disaster areas. A comparison to the experiences concerning prevention and reduction planning systems applied in the advanced countries found that the lack of similar ideas before the earthquake contributed one of the main factors to the losses. A further review of the whole post-disaster reconstruction planning system and a field survey affirmed that the protection of the historical and cultural cities was specified in principle, but, in practice, the special protection planning was ignored and the protection endeavor was needed. Therefore, some objective suggestions and opinions regarding historical and cultural city planning and construction were inferred from the viewpoints of disaster prevention and reduction.
Evaluation Analysis of Ecological Footprint Model
Authors: Li Ying , Guo Ting Ting , Li Pan Pan
Published: September 2011

The conception and calculation of ecological footprint model were concluded. On this basis, the key issue of ecological footprint's calculation was proposed. Advantages and disadvantages of ecological footprint model when it applied in ecological assessment was also proposed. This provides references for application of ecological footprint model's assessment methods.
Study on Strength Properties of Reinforced Expensive Soils with Failured Material
Authors: Liu Jin Hui , Ding Wan Tao , Liu Yu Ping
Published: September 2011

Based on the tri-axial tests, the stress-strain relationship and strength properties of reinforced expensive soils are studied to get the relation between the strength index of reinforced soil and that of the corresponding plain soil. According to stress-strain relationship of reinforcement soils under different layers and principle of equivalent confining pressure, strength properties of reinforced expensive soils with failure material were analyzed. Mohr circles of different reinforcement layers were tangent to the same line while reinforcement materials fractured. With the increment of axial pressure, different layers were fractured slowly and Mohr circles extended outward. It showed that the strength of reinforcement soils increased with increasing the layers. And the tri-axial tests showed that strength envelopes of reinforcement soils with layers of flexible materials were approximately parallel. The increment of strength was only affected by increment of cohesion.
Inherit Historical Culture and Create Livable Environment
Authors: Zeng Ming Ying , Xian Qing Song
Published: September 2011

According to Mianyang’s 11th five-year planning outline, Xianhai Lake (the national –level water conservancy scenic spot )should take full advantage of geography and ecology edge to promote Mianyang prosperity and exalt its image while making Xianhai Lake a national –level eco-tourism economic region which will serve as a place for leisure, vacation, fitness exercise, convention and exhibition and so on. Chenxiang Village is next to Xianhai Lake and it’s a significant part of Xianhai Lake tourism outline. Thus this article deals with Chenxiang Village architecture and environmental landscape planning .
Redistribution of Land Value-Added Caused by Urban Planning
Authors: Bi Jing , Huang Yao Zhi
Published: September 2011

The inherent mechanism of the land value increment and the system of the revenue distribution, have become the focus to the academic and government. On basis of the study of present land value increment revenue distribution in China, learns a lesson from the successful experiences of the foreign countries, and presents the way in terms of reforming the revenue distribution of land value increment for China. Perfect taxes tax rate according to the different factors affect appreciation, burden public investment in facilities reasonably, perfect the urban land reserve transfer system, etc. This article Explorers distribution ideas of land resources value-added in general meaning, in order to provide the reference for the city construction.
The New View on the Pattern of Rural Settlements
Authors: Chen Chao Jun , Zhou Yin Bo , Huang Yao Zhi
Published: September 2011

Based on the analysis of main factors that affect the pattern of rural settlements and characteristics contain rural industry protection, rural culture development and so on, this paper points out that the research of pattern of rural settlements should focus on its evaluation method, guidance to ensure its development following the proper sequence, and the direction of its development.
Research on Space Development of the Harbin "Three Powers" Industrial Zone
Authors: Song Hai Hong , Zhao Bo Han
Published: September 2011

This paper introduced the developmental course of the Harbin "three power" industrial zone from birth to prosperity, again by wins and failure and to the Renaissance of development and it’s internal causes; and in detail analysed of the industrial zone of space morphological characteristics and present situation of the land layout, and analyzed the decisive role of the inner mechanism of the spatial structure of the industrial zone for its spatial development, and put forward the concrete optimizing measures.
Study on the Secondary City, Spatial Expansion Model of Unifying Adjacent Cities
Authors: Zhou Chao
Published: September 2011

Urban spatial structure that is a comprehensive reflection of the interaction between human activities and natural factors, is the internal driving force mechanism for sustainable urban development. For the secondary city of unifying adjacent cities, the main city can effectively undertake some of the features of the spillover, but also with the development of low-carbon urban development concept, select a reasonable space to expand the model of vital importance. Therefore, in the study of in the secondary expansion y on the basis of the dynamic mechanism, focusing on the Secondary City space to expand the city and its chosen range of four models for different city of the context of the city spatial expansion in the unifying adjacent cities.
A Study on Appraisal System of Open Space Suitability of City Square in Luoyang
Authors: Li Dong Sheng , Yan Ya Fei , Li Lu , Zhang Hong Yu
Published: September 2011

From the perspectives of component elements of space and its functions and practicability, four appraisal factors, boundary, vegetation landscape, recreational facilities and human activities, are screened, and 18 appraisal indexes are established in this study. Analytic hierarchy Process (AHP) is employed to determine index weight, and establish the appraisal system of open space suitability of city square in Luoyang at last. The case study of City Square in Luoyang is conducted to provide theoretical basis for the reasonable and scientific design of city square in the future.
The Construction of Ecological Functions of Urban Open Space
Authors: Dong Yu , Dong Wei
Published: September 2011

Urban open space which maintaining the diversity of the urban ecosystem, is an important structural element of the city. Urban development led to the isolation of open space between one another, and the ecological function and environmental function of open space greatly reduced. This article pointing out that we should protect and restore urban ecological structure, improve the open space network, strengthen the links between open space, take low impact development approach to reduce the impact of urban development on the natural environment and restore the ecological functions of open space.
Research on the Pedestrian Street System and its Ecological Strategies in the Urban Planning
Authors: Sun Ke Zhen
Published: September 2011

This article argues the problems of ecological strategies in the planning of pedestrian street system, and the main contents of ecological strategies under the concept of low-carbon strategy. From a whole environmental ecosystem to an urban pedestrian ecosystem, some strategies of pedestrian zone are studied. The paper also discusses the contents of ecological strategies in the ecological design of pedestrian street system, the major controllable factor in the ecological strategies, the pedestrian street ecosystem and the urban spaces, the urban life etc. In addition to these, the article studies the composition of pedestrian street ecosystem, the relationship among the urban ecosystem and the pedestrian ecosystem, the planning and design integrated ecology, the method of interdisciplinary working. System theory is involved in this paper to discuss relevant questions.
Mechanical and Durability Properties of Recycled Aggregate Concretes Containing Fly Ash
Authors: Mei Ying Jun , Wu Jin Hang , Zheng Jian Hua
Published: September 2011

The reutilization of waste concrete and fly ash produced by power plant is one way to develop green concrete. The addition of fly ash in recycled aggregate concrete has two methods, named equivalent replace and super-substitute technique. The workability of fresh concrete, compression strength, spilt and flexural strength of recycled aggregate concrete with different content of fly ash at different curing age are tested. Durability performance index such as sulfate attack, drying shrinkage and wear resistance is acquired base on the corresponding test. The result shows that the fluidity of fresh concrete is improved by the addition of fly ash. Before the age of 28d, the compression and flexural strength of recycled aggregate concrete with the contain of fly ash is lower than concrete without fly ash, after the age of 60d, the compression and flexural strength for FRC-10, FRC-10-2, FRC-10-4 are even higher than that of concrete without fly ash. The optimum equivalent replace ratio is 10%, and super-substitute ratio is 20% according to the compression and flexural strength. The performance of sulfate attack resistance, drying shrinking and wearing resistance of recycled aggregate concrete are significant improved as the containing of fly ash.
The Efficiency Measures of Building Energy Conservation
Authors: Mo Zheng Bo , Hu Song Tao , Gao Li Yan
Published: September 2011

Briefly outlines current situation of building energy consumption in China. On this basis, lists the efficiency measures of building energy conservation: including energy optimization in building design process, new technologies in building envelope, energy saving of heating system, heat pumps, large public buildings energy conservation, efficient lights and energy saving electrical appliances.
Influence of Wollastonite or Plant Fiber on Performance of Autoclaved Cement Concrete
Authors: Ni Tie Quan , Zhang Li , Yuan Bing
Published: September 2011

The influence of wollastonite or plant fiber on the property of autoclaved cement concrete is studied by chemical composition analysis, X-ray diffraction analysis, scanning electron microscopy and energy spectrum analysis. The results showed that the two fibers were benefit to bending strength of autoclaved cement concrete. The suitable content of wollastonite was about 15% of cement mass, and the increased amplitude of flexural strength was more than 30% and the compressive strength slightly increased for autoclaved cement concrete admixed wollastonite. The optimal content of plant fiber was about 1.5% of cement mass, the increased amplitude of the flexural strength was more than 20%, and the compressive strength change of autoclaved cement concrete was not significant for autoclaved cement concrete admixed plant fiber.
Research on Effect of Mixture of Plasticizers on Cement Adaptability
Authors: Cai Li Peng , Guo Li
Published: September 2011

The paper using different strength cement mixture of cement paste, cement mortar and cement concrete, to which adding single plasticizer and two kinds of mixed with plasticizer, Experimental study plasticizer on different cement adaptability, effects of mixture of different water-reducing admixtures, Submit Issues to be noticed on plasticizer storage and use.
Mixed Composite Frostproof Pumping Agent Winter of Common Concrete Construction Quality Monitoring and Research
Authors: Zhou Ming Ru , Zhang Hao Jie , He Ying , Ding Zhao Feng , Luo Xing Zhou
Published: September 2011

Combining with a large number of concrete test and the moving reconstruction project of Qingyang petrochemical about three million tons, by adjusting “advance maintenance time”, monitor and research on the construction quality of mixed composite pumping antifreeze ordinary concrete in winter. Then provide reference and theoretical basis for construction of this winter antifreeze mixed composite pumping concrete.