bluuebunny/crossref_metadata_2025 huggingface dataset:
Design of Double Twister’s New Control System Based on Multi-Electromotor Driving
Authors: Lv Ming Lai , Yuan Yan Hong , Zhang Jian Yi
Published: November 2012

This paper discussed the working principle of the twister and the overall framework,designed an embedded control system of the multi-electromotor drive new twister which as the core of the ARM. Research the control mode of the ACMotor,Step Motor and Servo Motor,and design of hardware circuit to realize the coordination between them，which can make the twister meet the work requirements in the process.Design user-friendly man-machine interface to simplify the process.The experimental results show that the control system can satisfy the new twisting machine realization,also have a good real-time,and can meet the demand for the accuracy of the process.
Damage Identification of Simply Supported Beam Bridge Based on Time Series Analysis
Authors: Liu Han Bing , Song Yan Jun , Tan Guo Jin , Sun Yan Yi
Published: November 2012

Presently, the study on damage identification of bridges is very popular and it has a wide range of applications. Also the related theory and technology are constantly developing and mature. The researches based on the dynamic response of bridge in frequency domain is more, but the dynamics theory is complex and difficult for the engineering personnel to grasp. On the opposite, although the damage identification method based on the dynamic response of bridge in time domain is easy to understand, it is difficulty for applications. The Auto Regressive Moving Average model (ARMA) of time series analysis can be used to settle this problem. It is a not very abstruse theory and it is already apply for the system identification of some Structures. In this paper, we use time series analysis for the damage identification of simply supported beam bridge combined with its own dynamic response in time domain.
PFC/FLAC Coupled Numerical Simulation of Excavation Damage Zone in Deep Schist Tunnel
Authors: Song Wei , Hong Ren
Published: November 2012

In the present study, a coupled numerical method is used to study EDZ (excavation damage zone) in a deep schist tunnel. Two codes, Fast Lagrangian Analysis of Continua (FLAC) and Particle Flow Code (PFC) are coupled to implement the simulation. The motive to apply the FLAC/PFC coupled approach is to take advantage of each modeling scheme while at the same time minimizing the requirement for computational resources. The coupling is realized through an exchange of displacements, velocities, and forces in each cycling step. Simulation results are found to be in good agreement with in site ultrasonic wave measured EDZ profile. The coupled PFC/FLAC model present more information than each uncoupled model individually, and these simulation results are very important in tunnel design.
Syntheses and Properties of Pyrrole Derivative as a Cathode Material for Li-Ion Batteries
Authors: Su Chang , Wang Ling Min , Xu Li Huan , Liu Jun Lei , Yang Fang , Zhang Cheng
Published: November 2012

A copolymer of 4-(1H-pyrrol-1-yl)phenol (PLPY) and pyrrole ( P(PLPY-co-Py) )was synthesized. And the chemical structure and battery performance of the prepared materials were characterized comparably by 1H NMR, FT-IR spectra and galvanostatic charge-discharge testing using simulant lithium ion half-cell method, respectively. The results shows that the introduction of the phenol group to the pyrrole as a rigid side chain could prevent the polymer from agglomeration and optimize the particle morphology of the resulting polymers, all of which made it demonstrate a significantly improved specific capacity (73.9 mAh•g-1) compared with PPy (21.4 mAh•g-1)
Study on the UV Photosensitive of Hexaarylbiimidazole Photoinitiator System
Authors: Wang Wan Hui , Hu Ji
Published: November 2012

2-chlorohexaarylbiimidazole; sensitizer; hydrogen donor; deeper layer’s curing speed Abstract.The ultraviolet photosensitive initiating system is composed of hexaarylbiimidazole (BCIM), sensitizer and hydrogen donor coinitiator. The effect of sensitizer and hydrogen donor on the curing speed, especially on the deeper layer’s curing speed of ink was studied. The experimental results shown that the deeper layer’s curing speed of the ink system mainly depend on the type and the amount of the sensitizer and the hydrogen donor. The amount of the total initiators in the ink formulation is optimized. This hexaarylbiimidazole initiating system is promisingly useful in silk-screening ink and “green ink” for printing circuit board
A New Federation Approach in Analysis of Pharmaceuticals
Authors: Wang Zhuo , Nie Bin , Xu Jian Feng , Hu Ran , Rao Hong
Published: November 2012

In order to confirm the different pharmaceuticals have different or similar effect, the paper put forward a new federation approach in analysis of pharmaceuticals. The first to data preprocessing using wavelet compression ,the second to classify for pharmaceuticals based on OPLS/O2PLS-DA. The result indicate that the different pharmaceuticals have different or similar effect ,The approach was proved to be feasible and effective after tested with 8 kinds of pharmaceuticals experimental data.
Shallow Groundwater Environment Quality Evaluation Based on the Method of Factor Analysis
Authors: Fei Zhang , Bin Tang
Published: November 2012

The evaluation of groundwater environment quality relates to many factors and make the comprehensive evaluation is more difficulty. The author applies factor analysis method to discuss the quantitative-rization of chemistry characteristic appraisal of shallow groundwater, three principal factors implying important significances are found through R-type factor analysis of chemistry composition of the selected twelve shallow groundwater samples. Furthermore, the authors calculate the score of every principal factor. The inclusion shows that the score of R-type principle factors are obviously different between samples, and then, this difference can be a kind of quantitative expression for chemical characters of shallow groundwater, and be helpful to its classification and protective management, and it has certain reference significance.
Chiral Interfacial Assembly of a Trigonal Schiff Base Compound with TPPS in Organized Molecular Films
Authors: Jiao Ti Feng , Zhou Jing Xin
Published: November 2012

In order to investigate the chiral interfacial assembly of special amphiphile, a trigonal Schiff base compound with long alkyl chains was designed and synthesized, and its supramolecular assembly and interaction properties were investigated by spectral and morphological measurements. Condensed monolayers were obtained on pure water surface, in which flat and uniform domains were obtained for the monolayers. When an anionic tetrakis(4-sulfonatonphenyl)porphine (TPPS) was added into an acidic subphase, an in situ complex formation between the trigonal amphiphile and TPPS occurred. The complex monolayers were transferred onto solid substrate and TPPS existed as J-aggregate and J-aggregate in the complex films. Due to the multisited positive charges in the spacer on acidic subphase, the complex films of trigonal amphiphile with TPPS appeared as short nanorod structures and formed two-dimensional (2D) conglomerate chiral domains.
Design of Antenna for UHF Near-Field RFID Reader
Authors: Tao Zou , Zhu Yong Zhong
Published: November 2012

A segmented loop antenna is presented for ultra-high frequency (UHF) near-field radio frequency identification (RFID) reader. The segmented antennas have been constructed that can operate at resonant diameters while still providing good magnetic coupling. The antenna printed on a FR4 printed circuit board (PCB) with an overall size of 170× 170 × 1 mm3 achieves good impedance matching and uniform magnetic field distribution over an operating bandwidth of 840–1120 MHz, which is desirable for UHF near-field RFID reader applications.
Integrated Temperature Sensor AD 590 and its' Application
Authors: Yang Yu Lan
Published: November 2012

Integrated temperature sensor of current mode is made based on the principle of relation between forward current of PN junction and temperature. It is of very good linearity, inter-exchange and accurate measurement, which has been brought to close attention of the industry recently. The paper focuses on the introduction of the principle of PTAT integrated temperature sensor of current mode and detailed analysis of the product of the type .In addition, the scheme, used for constant temperature control inside the furnace, is designed with the temperature control system consist of current mode integrated temperature sensor AD590.
Digital Relaying Algorithm on Substation System Protection
Authors: Hong Yang
Published: November 2012

The digital relaying algorithm introduced in this paper is able to overcome the deterministic data delivery constraint placed on previous digital relaying solutions. Its performance when applied to a wide range of protective solutions is investigated in the next chapter, confirming its applicability to an integrated power system protection and control solution.
SD-NFC Mobile Payment Research and Programming for SWP/HCI
Authors: Wei Ting Ting , Wu Li Ji , Yang Xiang Jun , Zhang Xiang Min , Wang Yu Zhong
Published: November 2012

This paper presents a solution of mobile payment based on SWP/HCI (ETSI) implemented with Micro SD card connected to an NFC-enabled mobile phone. Connection scenarios of the solution are described. Moreover, SWP/HCI protocol architecture is given. Programming and optimization of this solution is analyzed as well. We implement the functions and procedures using C plus plus language on ARM 7 platform. This solution complies with the development of NFC technology and compatible with the existing POS payment system terminals. And after optimization, the occupying RAM space of the codes is reduced by 74%.
Preparation and Dimming Performance Study of PNIPAm Thermal Hydrogel
Authors: Gao Hong , Sun Li Na , Wu Yu Peng
Published: November 2012

The formation and structure properities of N-isopropyl base acrylamide (PNIPAm)gels with different synthetic temperatures, monomer concentrations and crosslinker concentrations were discussed, and the application of intelligent glass was researched. The results show : The synthesized PNIPAm gel is transparent and elastic, when the temperature is at 10 °C -20 °C, monomer concentration is 10%, crosslinker concentration is 5%. With the increasing of polymerization temperature, monomer concentration, and crosslinker concentration, the temperature of color change is both 32 °C,leading to the decrease of transmittance ratio, the readuce of temperature sensitivity. Synthesized PNIPAm gel was put in the glass of interlayer, which plays a good shading result .
A High Isolation Rate Race Circuit Compose the Carrier Leakage Canceler for RFID
Authors: Ma Zhong Hu , Yang Jian Hong
Published: November 2012

In order to suppress Tx-to-Rx carrier leakage in Radio Frequency Identification (RFID) system, this paper proposes the method of carrier leakage canceler of rate race circuit. It uses the two outputs of rate race circuit as antenna port and reflection port, and the imperfect isolation (Tx-to-Rx) and the reflection of antenna mismatch are suppressed in the receiver by adjusting the reflection coefficient of reflection port. Simulation shows that using rate race carrier’s cancellation circuit can perfectly suppress the carrier leakage in receiving circuit, the carrier’s suppression ration reaches 71.7dB which is 36dB higher than traditional circulator. Finally, the practice circuit is tested, and the result of test shows that carrier suppresses 61dB, which has a good application value in engineering
Influence of Sludge Content on Compressive Strength of Sintering Sludge-Shale Bricks
Authors: Huang Bang Biao , Zhang Xiang Hua , Zhu Ji Zhen
Published: November 2012

Sintering sludge-shale brick is a new kind of environmental protection and energy saving material. In order to study the different sludge content on the influence of compressive strength of sintering sludge-shale bricks, through the experiment and comparison to the finished products of the five groups of the sludge content with the method of contrast test, the reasonable content is found. The result shows that the compressive strength of the brick decreases sharply with the increase of the sludge content in the same experimental condition. In order to realize the greatest degree of sludge utilization, the best sludge content of sintering sludge-shale brick is 30%.
Basic Mechanics Properties Test of Fly Ash Concrete
Authors: Xie Wei , Zhang Hai Juan , Li Shu Shan
Published: November 2012

By the test study of basic mechanics properties of concrete with different fly ash content, the influence of the content of fly ash on the compressive strength, flexural strength, splitting tensile strength and static compressive elastic modulus of concrete are analyzed with the explaining of the influence mechanism of fly ash. The test results show that, comparing with the normal reference concrete, the early age strength of fly ash concrete enhances slowly, while the late strength develops rapidly, even overpasses the strength of normal reference concrete.
Effect of Silica Fume on Dry Shrinkage and Freezing-Thawing Durability of Concrete
Authors: Li Feng , Cui Zai Peng
Published: November 2012

An experimental study has been conducted to investigate the effect of silica fume on shrinkage and freezing-thawing durability of concrete, a large number of tests have been carried out in this study. The results indicate that the addition of silica fume has adverse effect on the dry shrinkage property of concrete. The dry shrinkage strain of the concrete containing silica fume is more than that of the concrete without silica fume, and a considerable increase for the dry shrinkage strain of the concrete was observed by increasing the dosage of silica fume. However, the addition of silica fume can improve the freezing-thawing durability of the concrete evidently, and the freezing-thawing durability is becoming better and better as the silica fume content is increasing gradually.
A Kind of Simple Method for Mesh Generation of Concrete at Meso Level
Authors: Wang Juan , Qing Long Bang , Guan Jun Feng
Published: November 2012

The paper proposed a method to generate the finite element mesh of concrete at meso level semi-automatically. And an aggregate meshing computer program, AggMesh, was developed by C++ language. Since it avoids the judgment of node coincidence in contact surface between aggregates and mortar through meshing process, the approach can greatly increase the finite element meshing capability for concrete mesostructure and improve meshing efficiency. The study shed light on preparation for simulating concrete strength at meso level.
Calculation Method of Crack Width of Steel Fiber Reinforced High-Strength Concrete Beams under Fatigue Load
Authors: Gao Dan Ying , Zhang Ming
Published: November 2012

Based on the fatigue test, 8 steel fiber reinforced high-strength concrete beams are studied, the influencing factors of crack width are discussed in the paper, and the calculation method of crack width under fatigue load is investigated. Based on the analysis of test results, the formulas are put forward. The results show that adding steel fiber into the high-strength concrete beams can prevent the development of the fatigue crack, fatigue crack widths are decreased by 26.0%~121.0% and the calculated values have good agreement with test date.
Research Progress of Diffusion Absorption Refrigeration Technology
Authors: Ren Xiu Hong , Tan Ying Ying
Published: November 2012

Compared with the gas-compressed refrigeration system, the diffusion absorption refrigeration cycle has no moving part and the associated noise and vibration. It can be operated without any electric input and driven by various energy sources, has no the problem of the substitute of CFC, furthermore it has positive significance in energy conservation, off peak, environmental protection, and promoting the use of gas. So it has broad application prospects as a kind of absorption refrigeration mode. In the development of diffusion absorption refrigeration technology, the performance of diffusion absorption refrigeration system has been improved and enhanced continuously. The paper presents and discusses the recent research progress of diffusion absorption refrigeration which contains design of bubble pump, adjustment and optimization of operation parameters, utilization of low-grade thermal energy and selection of working medium. The research direction of diffusion absorption refrigeration in the future is suggested.
A Practical Technique for Generating Hexahedral Meshes
Authors: Bai Xin Li , Ma Bing , Li Jiang Yan
Published: November 2012

A practical technique for generating hexahedral meshes automatically is proposed in this paper. The technique is accomplished by secondary subdivision of a tetrahedron. The implementation method from tetrahedron to hexahedron through secondary subdivision is discussed. The method and treatment of boundary condition formula are derived, and the simple and practical load processing method is given. Finally a tetrahedron-based hexahedron automatic meshing program is developed. Engineering examples shows that the calculation accuracy of the method is comparatively high. The proposed method can be applied to any entity.
Three-Dimensional Two Material Transportation Method Based on the Volume Fractions Interface Algorithm
Authors: Wu Ji Lin , Wu Ze Yu , Tong Yu Ping , Du Pei Rong
Published: November 2012

In order to solve the problem of three-dimensional two medium transportation problems of fluid dynamics, the transportation principles of a metal ball moving in constant velocity fields were given. The space district was dispersed into some cuboid Euler cells in the directions of three coordinate axes, along which mediums were transported by turns. The continuous boundary condition was adopted to simulate infinite boundary. The interface reconstruction method in the mixture cells was the volume fractions method. The numerical simulation result indicates that the shape and size of the medium cuboid can keep unchanged basically during the medium transportation. The overspeed transportation problem of the volume fractions method in the course of transportation is pointed out. The research may provide certain reference and guidance for solving the multi-material fluid dynamics problems.
Study of Road Property of Basalt Fiber Asphalt Concrete
Authors: Chen Yuan Zhao , Li Zhen Xia
Published: November 2012

In order to discuss the effectiveness of basalt fiber in reinforcing pavement performance of asphalt mixtures, the pavement performances of basalt fiber asphalt mixtures were investigated by tests of high temperature stability, water stability and low temperature crack resistance, and compared with the pavement performance of asphalt mixtures with polyester fiber and xylogen fiber, and that of reference mixture. The results show that pavement performance of fiber asphalt mixture are improved and optimized comparing with reference asphalt mixture, the performance of asphalt mixture with basalt fiber are excelled than those with polyester fiber and xylogen fiber while the dosage of fibers is keeping at the optimum.
Numerical Simulation of Rural Brick Buildings Strengthened with CFRP under Flood Actions
Authors: Liu Yong Jun , Ma Xing Tao , Sun Yong Mei
Published: November 2012

In China, floods often cause life and property losses due to heavily damage and collapse of rural buildings. It is very important to conduct comprehensive research on flood behavior of rural buildings. In this paper, formula of hydrodynamic load imposed on building by flowing flood is derived based on conservation of momentum and test results firstly. Secondly, the finite element analysis of rural brick buildings strengthened with CFRP under flood actions is conducted using ANSYS software to check the effect of CFRP. Simulation results demonstrate that the formula of hydrodynamic pressure and the numerical model of rural buildings are of high accuracy, and can be referenced for further study and applied in engineering practices.
Study on Design Method for Scale and Layout of Road Passenger Station
Authors: Li Zhi Cheng , Sun Quan Xin , Zhao Shun Bo
Published: November 2012

On basis of summarizing the traditional design methods on road passenger station, this paper discusses the influence of road passenger station layout on scale design. Combined with the analysis of layout design method for road passenger station, a bi-level programming model is proposed taking into account the overall optimization design problem of the scale and the location of the road passenger station. Through a numerical example analysis, an optimized station layout plan and an optimum volume allocation of the station are given out.
Variation Rules of Warping Effect with Respect to Parameters of Cylindrical Helical Spring
Authors: Hao Ying , Guan Jun Feng
Published: November 2012

The effect of warping deformation on the natural frequencies of the cylindrical helical spring with non-circle cross section, based on naturally curved and twisted beam theory, is analytically investigated in this paper. The purpose of this article is to discuss the variation rules of the warping effect with respect to the parameters of springs. The numerical simulations show that the results of the present model demonstrate a good agreement with those of ANSYS when the warping effect is included. Additionally, the effect of warping on the natural frequencies is more obvious as the parameters of the spring increase.
Calculation of Shear Capacity of Continuous Compound Spiral Hoop Reinforced Concrete Column
Authors: Guan Jun Feng , Wang Juan
Published: November 2012

High-ductility stirrups, which yield strength standard value is great than 1100MPa, are usually employed as a horizontal reinforcing steel bar of continuous compound spiral hoop reinforced concrete column to improve the anti-seismic performance of the short column. In this paper, a method is proposed to calculate the shear capacity of the continuous compound spiral hoop reinforced concrete column by regression analysis on the existing test data. Furthermore, the engineering application of the proposed method was illustrated in a specific case. This study provides supports for engineering projects of continuous compound spiral hoop reinforced concrete columns.
Research on Regional Dividing Technology for Liquefaction-Induced Lateral Spreads Based on MAPGIS
Authors: Li Cheng Cheng , Wang Wei Ming , Sun Rui , Li Yu Run
Published: November 2012

A simplified empirical statistical regression method for liquefaction-induced lateral spreads is stated in this paper. It is used to determine the corresponding calculation parameters for Tangshan city and its south region where 36 borehole data were collected. Using two multiple linear regression formulas, the free face model and the ground slope model are developed to calculate the lateral spread at each filed survey point in the region. The liquefaction-induced lateral spreads map was divided into hazard zones according to the calculated horizontal displacement at each borehole based on MAPGIS.
Stability Analysis of Concrete Gravity Dam
Authors: Wen Zhong Hua , Zhou Juan
Published: November 2012

The safety is first-class important event of the dam. The crash for the gravity dam usually causes due to slid, the slippery stable is a key problem of big dam. This paper checks the stability of one dam by rigid body limit equilibrium method and finite element technique. Rigid body limit equilibrium method is a kind of traditional stable analytical method, which is confirmed by factual engineering, the safe coefficient is always used to judge the big dam safety degree. The finite element technique is a method which is quickly developed in the calculator science and the basic theories of the rock soil mechanics. The paper compares the two methods and makes sure the fact that the finite element is more reasonable than rigid body limit equilibrium method for analyzing the stability of gravity dam.
Temperature Character Analysis of RCC Based on Stepwise Regression Model
Authors: Zhao Yu Qing
Published: November 2012

The basic principles and ways of stepwise regression analysis is explained, taking the case of Jiangya gravity dam. On the basis of the temperature monitoring data, the optimal regression equation of the dam temperature is established gradually by the dam bedrock temperature, air temperature and reservoir water temperature and other related factors. It is proved that stepwise regression analysis model is reasonable and the simulation is fairly well with high precision. The stepwise regression model can be used to analyze the concrete temperature. The work provides the practical calculation basis for the monitoring of dam safety running.
A Multiobjective Decision Framework for River Basin Management
Authors: Zhang Xue Qing , Gao Hui , Yu Xiang
Published: November 2012

A decision support system (DSS) for the purpose of obtaining optimal operation strategies of various hydraulic structures is needed to achieve effective and efficient management of a river basin network. The core of such a DSS is a multiobjective decision model that can optimally schedule operation strategies of different hydraulic structures to fulfill the requirements on flood management, protection of water quality, and utilization of water resources. In this paper, we develop a framework of this multiobjective decision model to discuss its decision horizon, rules, variables, objectives, constraints and solving algorithm. This framework can be used to further establish the DSS for a river basin network.
Finite Element Analysis of Complicated Sedimentation Basin
Authors: Zhang Xiao Yan , Liu Xu Chao , Yang Shun Qun , Dong Li Li
Published: November 2012

Due to the larger workflow, more complex foundation and special structure and with the 8° design seismic intensity, it is necessary to analyze this sedimentation basin in the static and dynamic by 3D finite element method. This paper describes the structural model and the selected parameters for calculation of static and dynamic properties, and states the stress analysis results under the various conditions.
Numerical Simulation of Excavation of Abutment Slope at Left Bank in Dagangshan Hydropower Station
Authors: Yang Kun , Ma Zhi Chao , Han Hao
Published: November 2012

The abutment slope at left bank in Dagangshan hydropower station has complex geological conditions with deep fractures, developed faults and unloading crack. The excavation will influence the stability of the slope. To evaluate the slope stability, the finite element model of this abutment slope was built in this paper to study the deformation, stress and plastic zone distribution of the slope during the excavation. The potential failure location of the slope is forecasted, some suggestions are proposed to be helpful to keep the stability of the slope.
Reservoir Operating Policies Analysis by Using Genetic Algorithm
Authors: Zhang Shi Bao , Wen Jie
Published: November 2012

The target of this paper is to look for the optimal program in reservoir operation by using Simple Genetic Algorithm and NSGA-Ⅱ (Non-Dominated Sorting Genetic Algorithm- II) in Matlab 2009a, and then make a comparison with the operation model’s operation results in MODSIM, which is a generic river basin management decision support system.
Design Analysis of Shuangji River Drainage Aqueduct Body with Large Flow
Authors: Feng Guang Wei , Gao Ying
Published: November 2012

On the basis of summarizing the completed structural types of aqueduct both at home and abroad, combined with the structural design of Shuangji River drainage aqueduct in China South-to-north Water Transfer Project (SNETP), the aqueduct body structural form was selected. The analysis and discussion has been done with three typical structure forms of Shuangji River aqueduct, the two mechanical construction schemes by aqueduct-making machine and aqueduct-installing machine have been researched. The results show that the aqueduct with the character of large flow, big section, large loads and gentle gradient should be comprehensive analyzed on the mechanical behavior, construction scheme and construction cost to select the appropriate structural style for improving the quality and efficiency. The results provide valuable reference for designing the similar aqueduct.
Study on Lateral Dynamic Response of Pile Foundation in Liquefiable Soil by Using FBG Method
Authors: Li Yu Run , Liang Yan , Wei Xing , Wang Yun Long , Cao Zhen Zhong
Published: November 2012

The study on lateral dynamic response of pile foundation in liquefiable soil is a significant part about seismic damage. In this paper, a new data acquisition system of FBG and calculation methods is used in the small shaking table test. The results show that FBG method used in this test is proved to be efficient and acceptable in both time characteristics and precision characteristics, it may be widely applied in the future doubtlessly. What’s more, the characteristics of p-y curves in different peak accelerations are discussed. And varying of maximum stress and displacement by corresponding acceleration is discussed. A contrast about p-y curve between dry sand and saturate sand is related, which provides a new direction in research about p-y curve.
Study on the Inwall Crack Extension and Fatigue Life Evaluation for Deep-Sea Steel Catenary Riser under Wave and Current Action
Authors: Si Bing Jun , Jin Qiao
Published: November 2012

Aimed at deep-sea steel catenary risers(SCRs) transporting supercritical or dense CO2, this paper uses the macroscopic pipeline-transporting finite element model and the microscopic pipewall crack growth model to numerically simulate corrosive-inwall-defect-induced crack extension along radial direction for the deep-sea riser which is subjected to wave and current loads. Meanwhile, based on linear elastic fracture mechanics and fatigue crack extension theory, the effect of wave height on the fatigue life of the pipewall at touchdown zone is discussed. The above-mentioned study in this paper is expected to give a good reference to the similar study for oil&gas SCRs.
Calculation of Saturation Line of Groundwater under Reservoir Water Table Uniform Falling
Authors: Zhang You Yi
Published: November 2012

It has been proved that the groundwater plays a key role in the stability of slope. It is important to determine the position of saturation line in the calculation of slope stability. Based on the basic differential equation of one dimension unsteady seepage flow, the calculation model is created with the uniform falling of reservoir water table, the counting equation by Laplace’s transform is deduced. It is easy to use the equation which is fitted by polynomial expression to get simplified formula. Simplifying the formula can satisfy the engineering precision requirement.
Analysis of the City Waterfront Landscape Design in Central Plains Economic Zone
Authors: Liu Jing Xia , An Zeng Qiang
Published: November 2012

The modern city waterfront construction is an important part of the city landscape environment design, many city put it as an important part of city development strategy. The article combines the ecosystem manage engineering case of Zhengzhou Jialu river, take out the course of river manage principle and important points in the process of designing under the background of Henan Central Plains Economic Zone construction.
Effect of Electrochemical Pretreatment and Flocculation on the Degradation of Pharmaceutical Wastewater
Authors: Mi Xiao
Published: November 2012

As it is not suitable for bio-treatment method, pharmaceutical wastewater is treated by physiochemical methods in this study. Besides, potassium permanganate oxidation, electrochemical pretreatment and the addition of FeCl3 and AlCl3 after potassium permanganate oxidation were compared. It is proved that electrochemical pretreatment had a little greater degradation efficiency compared with the other two flocculants. Electrochemical oxidation seems to be more cost-effective due to its ease of operation. Electrochemical pretreatment is expected to be a suitable method to assist the pharmaceutical wastewater treatment.
Experimental Study on Full Stress-Strain Curve of SFRC in Axial Tension
Authors: Huo Hong Yuan , Cao Chen Jie , Sun Li , Song Li Sha , Xing Tong
Published: November 2012

The tests were carried out to study the effects of the fraction of steel fiber by volume and the thickness of cement paste wrapping steel fibers on the axial tensile properties of steel fiber reinforced concrete (SFRC). The strength grade of SFRC was CF40 with the fraction of steel fiber by volume varying from 0.5% to 2.0%, and the thickness of cement paste wrapping steel fibers varying from 0.8mm to 1.2mm. The tests were conducted by WAW-600 electric-hydraulic servo-type test machine. The results show that the axial tensile properties such as the axial tensile strength, the fullness of stress-strain curve, the tensile energy and the axial tensile toughness ratio are all improved obviously by the adding of steel fiber in concrete. The reasonable thickness of cement paste wrapping steel fibers is 1.0mm. The formulas for stress-strain relationship of SFRC in axial tension are proposed.
Research on the Effect of Gas Leaking and Gas-Supplementing Measurements of Air Cushion Surge Chamber
Authors: Luo Guo Jie , Hu Yong Sheng , Huang Kun
Published: November 2012

Air cushion surge chamber is a water-engineering measurement different from the ordinary measurements and there is great development in 21th century in China. Aimed at the air leakage and supply measurements, the research of engineering layout, run-control methods and air-supplementing measurement are held in this paper, it can be the reference for the designer.
Study on Three-Dimensional Reconstruction of Macro/Meso-Structure Evolution of Expansive Soils with CT-Triaxial Apparatus
Authors: Li Xian , Wang Shi Ji , Chen Zheng Han
Published: November 2012

A program is used to reconstruct the computerized tomography (CT) images of expansive soils in the manuscript. The physical and mechanical properties of expansive soils can be researched accurately and visually. In the experiment, the CT-triaxial apparatus is used to research the shearing strength of expansive soils with artificial holes in different conditions of suctions and net pressures. The three-dimensional reconstruction is successful and considerable. The principle of program is easy and convenient, and it can be learned fast and directly by those who are not major in computer. This technique will have a better prospect in geotechnical engineering.
Analysis on Collapsibility and Microstructure of Unsaturated Loess Using Fractal Geometry
Authors: Ma Fu Li , Wang Mei , Yang Jing , Bai Xiao Hong
Published: November 2012

This paper studies the microstructure of 16 group samples from three different sites of North-west region in P. R. China. Pictures of microstructure were processed with imaging processing program to acquire the geometer parameter and fractal dimension of pores. The range of pores’ fractal dimension is between 1.816~1.936. The pore distribution function of unsaturated soil is established based on fractal geometry theory. The pore water distribution of loess under natural moisture is analyzed. The relationships of collapsibility coefficient with fractal dimension and porosity of unsaturated pores are analyzed with the method of regression analysis. A larger fractal dimension represents a more complex pore-structure. The collapsibility coefficient of loess increases with the increase of fractal dimension and porosity of unsaturated pores.
Theoretical Solution to the Change of Site Predominant Period Caused by Soil Softening
Authors: Huang Bao Rong , Wang Yong Zhi , Wang Wei Ming , Yuan Xiao Ming
Published: November 2012

The site predominant period should be changed because of soil softening, which is an important parameter to reflect the dynamic characteristics of the site. In this paper, in order to acquire the theoretical solution to the site predominant period, the actual horizontal site has been simplified into two-particle system. And the influence that caused by the thickness and location of the weak layer on the site predominant period, has been analyzed.
Study on Damage Evolution Mechanism of Concrete under Uniaxial Tension
Authors: Bai Wei Feng , Cui Ying , Wang Qian , Guan Jun Feng , Zhang Jian Wei
Published: November 2012

The damage and failure mechanism of quasi-brittle materials is the most fundamental research topic in Damage Mechanics. In this paper, the mesoscopic damage mechanism of concrete under uniaxial tension was discussed. The rupture and yield damage modes in meso-scale were introduced as the two basic parameters to define the damage accumulated variable. The results show that the proposed statistical damage model can accurately predict the whole deformation and failure process of concrete under uniaxial tension, including the two-stage deformation characteristics and the size effect.
The Study on Rainfall Threshold Induced Landslides in Yucheng District by Binary Logistic Model
Authors: Zhang You Yi
Published: November 2012

Ya’an Yucheng District intituled “rain city” or “heavens poured” lies to the west of Sichuan Basin. Most of the landslides take place in the raining season with the shallow layer, small scale. This paper analyzes a great deal of dates of landslides and rainfall in the history in Yucheng District using binary logistic regression model. The results indicate that the rainfall of that day’s and personnel 3 days’ with landslide is closely related. Based on the analyses, the predict formula of landslide rate and the design formula of rainfall threshold are built, which is important to early warn and forecast the landslide in the research area.
Application of Thermal Priority Strategy in Energy-Saving Optimization Design of Low-Cost Rural Residence
Authors: Lu Mei Jun , Zheng Zhi Feng
Published: November 2012

In order to improve the indoor thermal environment of rural residences, on the basis of meeting the requirements of functionality, living habits and certain architectural modeling, the thermal priority strategy is put forward into the design. Aiming at the low cost, from the perspective of building layout and architectural monomer design, the thermal priority strategy is applied to energy saving design for rural residence to get the effective and reasonable comfort-type rural energy efficiency residence. Specific measures are adopted such as the selection of sunny and sheltered sites in north-south direction, the courtyard and main entrance location in south or south-east side to form the layout opening from east to west, the technical performance with low shape coefficient and energy-saving shape and taking solar radiation into account, and the reasonably settings of climate buffer layer, thermal comfort zone, plane grid, doors and windows.
Simulation Study on Solar Collector - Air Source Heat Pump Combined System for Space Heating in Cold Region
Authors: Wang Zhen Qing , Chen Yan , Wang Hai Xia
Published: November 2012

An air source heat pump system (ASHPS) was set up, which provided space heating and cooling, as well as hot water for an office building in Tianjin. Its operating performance in winter was evaluated based on test data. Considering the local abundant solar radiation and the way to provide energy in an office building, a simulation study was carried out on the combsystem of ASHP and flat plate air collector (FPAC). The effects of collector area and its outlet parameters on the heating performance of ASHP were studied, and the favorable operating and matching mode were recommended. The results indicate that ASHPS is a technically viable method in Tianjin in winter, but not economically, and the air-solar combsystem should be taken into account for its massive replacement for conventional energy.
Analysis on Waterproof and Drainage Systems of Pit House in the West of Henan Province
Authors: Wang Gui Xiu , Li Hong Guang
Published: November 2012

This paper analyzes on the unique concept, design and construction of waterproofing and drainage of Pit House in the west of Henan Province, China. The drainage design of Pit House concentrates on the water shutoff for controlling of catchment area and preventing rainwater flooding, the water drainage for draining water from roof, and the water seepage for draining off rain from underground courtyard. The waterproof mainly focuses on the protection to key waterproof parts of building materials and easy ways of building technology.
Analysis of Dynamic Impedance Functions in Urban Traffic Flow Guidance System
Authors: Li Zhi Cheng
Published: November 2012

The successful application of Intelligent Transportation Systems (ITS) depends on the traffic flow at any time with high-precision and large-scale assessments, it is necessary to create a dynamic traffic network model to evaluate and forecast traffic. Dynamic route choice model sections of the run-time function are very important to the dynamic traffic network model. To simplify the dynamic traffic modeling, improve the calculation accuracy and save computation time, the flow on the section of the interrelationship between the exit flow and number of vehicles are analyzed, a run-time functions into the flow using only sections of the said sections are established.
On the Elements of Contemporary Architectural Styling
Authors: Xu Cong Huai , Song Ying , Xu Shu Chen , Feng Qing , Wu Hao
Published: November 2012

This article written with a guide of a basic theory of modern architectural aesthetics, aesthetic psychology, constitute the basic principles of practice of science and art to use as the core to form. Combined with the author’ feelings and experiences and a large number of examples from architectural education, design practice and research in the professional career, we grouped the creation of contemporary architecture modeling skills into four elements, in order to meet the desire for the students and architects to increase their own artistic creativity and build up innovation capability, and a way to follow a truly theory and practice.
A Study on Architectural Style of Buildings along the Northern Foot of Qinling Mountains Taking Xi’an Garden as Example
Authors: Xiao Zhe Tao
Published: November 2012

The paper researches the location along the northern foot of Qinling Mountains and its architectural style. The particularity of the location and the relationship between natural environment and architectural style are analyzed. From the points of climatic characteristics, landform, water system and culture, the impaction of natural environment on architectural style of Qinling Mountains is studied. Taking Xi’an Garden as an example, the reason is explained. With studying architectural style in the particular location which is the northern foot of Qinling Mountains, it is hope to protect Qinling ecological environment though architectural style in harmony with natural environment.
Preservation and Renewal of Huaiyu Street Historical Blocks in Xunxian County
Authors: Gao Chang Zheng , Song Ya Ting
Published: November 2012

According to a large number of interviews and investigation in Xunxian County, which is the Historical and cultural city of the whole country, we carried out a close analysis about the formation of the Historical Blocks of Huaiyu Street, and explored the street style and spatial pattern. Thus we put forward some specific measures to the renovation of street blocks, combined with the influential factors the Historical Blocks of other cities’ protection methods. And we expect to provide a reflect way for the renewal of street blocks
Application of Display List Group Technology in Forming of Complex Building Model
Authors: Li Li Hua
Published: November 2012

The display lists function for OpenGL technique is applied in the process of forming complicated building model in this paper. It is used to increase the speed of forming model and editing while the demonstrating table is reasonably organized by dividing group technique.
Comparative Study on the Design Schemes of Residential Steel Structure
Authors: Xu Yong Chun , Tang Zhong Ping
Published: November 2012

This paper choses a duplex apartment which is six floors steel structure as the research object, on the ground of the same building size, with the same beam & tie rod, and the same material for the floor ground & wall plate, two structure system schemes are designed respectively using the H sections and square steel tube as the form of pillar section. The calculate model are made respectively applying the FEA software. From the model graph, natural frequency, economic and technology and other index, the following conclusions are given out comparing the two schemes: the multi floor residential building of light steel structure with square steel tube and H sections is feasible in seismic performance, the steel consumption of the square steel tube system is lower than the H sections system. The square steel tube system is superior to the H sections system in interior decoration and utilizing construction area.
A New Bending Stiffness Measurement Technique Based on Distributed FBG Sensing Technology
Authors: Wang Yun Long , Yuan Xiao Ming , Cai Xiao Guang , Wang Yong Zhi
Published: November 2012

Distributed fiber Bragg grating (FBG) sensing technology is used to measure the bending stiffness of a thin-walled aluminum tubes beam. In this work, the FBG sensing method is introduced, and the test result is compared with the nominal value based on the traditional mechanics of material computation.
Fire and Post-Fire Performance of Space Grid Structures
Authors: Wang Guang Yong , Wang Xing Qiang , Liu Guang Wei
Published: November 2012

A fire performance finite element (FE) model of space grid structures in fire and after fire is proposed, and deformation, stress redistribution, failure modes of grid structures are also studied. The result shows that tensile membrane action arises when the grid is loaded after fire, and the load bearing capacity after fire is reduced by fire damage.
Study of Building Design and Reinforcement Technology under the Mining Damage
Authors: Li Qin Shan , Wang Tie Cheng
Published: November 2012

With the development of society, the demand for mining resources is increasing. Associated with underground mining of mining resources, inhomogeneous deformation such as lever tension, compression, tilt, curvature of the surface has been aroused, which generate additional forces to the building foundations, causing damage and destruction to the surface housing. This paper describes the impact on surface buildings by the surface movement and deformation due to underground mining, explores the anti-mining structural system of the surface housing, the structural design theory and the anti-mining reinforcement of new technologies. The aim is to make the building more effectively absorb and resist surface movement and deformation. The measures and recommendations of mine surface housing design and reinforcement are proposed.
Seismic Research and Development of Steel Plate Concrete Composite Shear Wall
Authors: Yang Ya Bin
Published: November 2012

Shear wall is the main component that resists the lateral force for high-rise buildings. With the rapid development of high-rise buildings, especially the super high-rise buildings, requirements for seismic performance of shear walls have become more sophisticated. The steel plate concrete composite shear wall shows good seismic performance. It has made rapid development through the research of seismic performance in the way of seismic design to the practical engineering application of steel plate concrete composite shear wall. Recent research situation and prospect of composite shear wall around the world have been introduced in this paper.