bluuebunny/crossref_metadata_2025_split huggingface dataset:
Research on Force Performance of Assembled Frame Beam
Authors: Li Zhe , Hu Yandong , Zhao Chuanzhi , Qiao Chengyuan 
Published: November 2020

Abstract
Three full-scale specimens of prefabricated frame tongue-and-groove beams connected by high-strength bolts were tested under low-cycle reciprocating loads. The failure patterns, hysteresis characteristics, skeleton curves, ductility of specimens, stiffness degradation and energy dissipation capacity of the assembled specimens were studied and compared with the full-scale ordinary concrete specimens. The test results show that the new form of connection is basically in line with the mechanical behavior of the ordinary concrete specimen, and it is feasible to apply it to the prefabricated frame structure. The test explores the influence of the thickness of the connecting steel plates on the mechanical performances of the prefabricated specimens, and find that the both sides connecting steel plate are more beneficial to the underside plates. In addition, in the design, reasonable selection of bolt and aperture size, the control of the machining error of the specimens, the effective connection of the steel bars jointied of laminated layer can further improve the installation efficiency and seismic performance.
Study on the Influence of Compressibility on Pressure Fluctuation Characteristics of Pump Turbine
Authors: Liu Jianshu , Cao Yang 
Published: November 2020

Abstract
In order to study the characteristics of pressure distribution and the influence of compressibility factors on pressure fluctuation of pump turbine under the condition of turbine. Based on RNG k-ԑ model, aiming at a pump turbine model, this paper uses UG NX10.0 software to build a three-dimensional model, and uses ICEM-CFD software to devide the mesh. Using ANSYS-CFX software, the unsteady simulation calculation of the whole flow passage under the opening of 10 mm movable guide vane is carried out, and the frequency spectrum of pressure fluctuation is obtained by using the fast Fourier transform. After analysis, the dynamic and static interference between the movable guide vane and the runner, as well as between the runner and the draft tube, has an impact on the pressure fluctuation in the front of the runner behind the guide vane and in the draft tube. There is a secondary peak at 9fn. Considering the compressibility, the amplitude of the fluctuation decreases, but the flow is more complex and the pressure fluctuation is more chaotic.
Research on Abnormal Grain Growth in the Conventional Sintering of (K0.5Na0.5)NbO3 Nano Powders
Authors: Chu Dongliang , Wang Chao , Luo Fengjun , Zhu Mankang 
Published: November 2020

Abstract
About 30nm grain sized (K0.5Na0.5) NbO3 powders were used as the raw materials, and the solid phase method was used to prepare potassium sodium niobate ceramics at 750~ 950°C under normal pressure sintering. The abnormal grain growth (AGG) at process of powder sintering was investigated. The consequences demonstrate that when the sintering temperature is greater than 850°C, AGG can be clearly observed. As the sintering temperature increases, the number of areas where abnormal grain growth occurs increases as well as the size. When the sintering temperature is 950°C, the area of abnormal grain growth has a maximum of approximately 1mm × 1mm, and it has good (111) orientation. The difference in the sintering driving force caused by the size distribution in the potassium sodium niobate nano powder is the root cause of abnormal grain growth.
Research on the Coordinated Development of Urban Resilience and Urbanization Level in Sichuan Province
Authors: Ma Ke , Zhang Tianxu , Wei Yali , Zeng Fan 
Published: November 2020

Abstract
Urban resilience can reflect the city’s ability to cope with crisis and risks, and it is an important guarantee for urban sustainable development. In the process of urban development, attention should be paid to coordinating with urban resilience construction. Taking 21 cities and prefectures of Sichuan Province as the research objects, this paper constructs the evaluation system of urban resilience from the aspects of economy, infrastructure, ecology and society, and the evaluation system of urbanization level from the aspects of population, land and economy. By using Entropy Method, the Coupling Coordination Degree model, coupling coordination between urban resilience and urbanization level is discussed. According to the results, the urban resilience level of cities and prefectures in Sichuan Province presents a pattern of “one city is quite high and the rest are low”, and the urbanization level presents a pattern of “one city is quite high, a few are high and the rest are low”. The coupling coordination degree of most of the cities and prefectures in Sichuan Province are low, and the cities with high coupling coordination are concentrated in Sichuan Basin. Combining with the urbanization level and coupling coordination degree, the cities and prefectures are divided into four types, high-high, high-low, low-high and low-low, in this paper. Corresponding development ideas are put forward so as to provide ideas and suggestions for the coordinated development of various cities and prefectures in Sichuan Province.
Conceptual Planning and Design of Sponge Campus--Taking the South Campus of Puwan Campus of Dalian Vocational and Technical College as An Example
Authors: Liu Huiqun 
Published: November 2020

Abstract
This article fully understands the goals and requirements of the national guidance to promote the construction of sponge cities. The author fully understands the current situation of research and construction of rainwater management, sponge cities and sponge campuses in domestic and foreign cities. Based on the natural and artificial environment characteristics of the South Campus of the Puwan Campus of Dalian Vocational and Technical College (hereinafter referred to as the campus), this article focuses on the prevention of waterlogging in the rainy season and the collection and utilization of rainwater in the campus, and follows the concept of LID, and proposes a sponge campus “2 principles→4 blocks” →8 sub-items” conceptual planning and design plan. Through the conceptual design of small, source and decentralized control facilities such as permeable pavement, sunken green space, ecological grass ditch, rainwater garden, and underground storage structure, the author constructs a simulation of nature through in-situ collection, natural purification, and replenishment of groundwater.
The analysis of differentiation Between Prefabrication and Modular Construction
Authors: Qin Hua , Yao Yujuan 
Published: November 2020

Abstract
Prefabricated construction and modular construction have been developing many years, and most of the stakeholders agree that both of them have provided a significant improvement to schedule, productivity, quality, safety performance waste-reducing in Architecture, Engineering and Construction (AEC) industry, This study will illustrate the differentiation between modular construction and prefabrication construction from various perspectives, i.e. impact of BIM implementation, influencing factors as well as performance between prefabrication and modular construction.
Research on Energy Saving Design of Steel Structure Residence in Severe Cold Area
Authors: Gong Junhao 
Published: November 2020

Abstract
China has begun to advocate energy saving for the whole people. “Green buildings” have received social attention in large and medium cities. At present, China’s urban central heating is basically at a high energy consumption, high pollution, low efficiency, and extensive level. Most Chinese buildings are non-energy-saving buildings, and the thermal insulation performance of the envelope structure is poor. Over the years, China’s steel production has been ranked first in the world. The light steel structure housing system is currently a relatively environmentally friendly and reliable building system in the world. It has been widely promoted in Europe, America, Japan and other countries, especially in the cold regions of Northern Europe. Extensive use. Therefore, it is imperative to promote the upgrading of the construction industry structure and to use steel as the construction material for light steel fabricated buildings. In this paper, through field investigation and measurement research on prefabricated steel structure residences in severe cold areas, this paper explores an energy-saving optimization system suitable for prefabricated steel structure residences in severe cold areas of Xinjiang, and provides a reference for the design and construction of the energy-saving optimization system for key nodes of this type of residence.
Research on Energy-saving Design Method of Building Envelope in Hot Summer and Warm Winter Area
Authors: Chen Jiating , Liu Yan 
Published: November 2020

Abstract
Since the beginning of the 21st century, with the rapid economic growth, energy pressure has continued to increase, and China’s energy consumption has doubled and become one of the main energy consumers. Building energy consumption accounts for a large proportion of total energy consumption. Therefore, building energy efficiency is the top priority of green building development. By improving the thermal performance of the building envelope, reducing the building’s energy consumption and dependence on artificial cold and heat sources, it has become the current research focus. This paper studies the energy-saving design methods of building envelopes in areas with hot summers and warm winters. It mainly analyzes the energy-saving methods of exterior walls in the envelopes, proposes the development of energy-saving technologies that adapt to local climate characteristics, and concludes the overall building shading structure system is the key to energy-saving design in this area.
Experimental Research on the Dynamic Shear Modulus and Damping Ratio of Marine Structured Clay
Authors: Zang Meng , Li Lu , Wang Weiwei 
Published: November 2020

Abstract
The dynamic shear modulus and damping ratio are essential parameters for the dynamic properties of clay. They play significant role in dynamic analysis of soil mass as well as the safety evaluation on site earthquake. In consideration of the specialty of marine structured clay, the resonant column test was used to analyze the Zhanjiang structured clay. From the result, currently the standard recommended values of shear modulus and damping ratio are not applicable to the marine clay. Therefore, it used the Martin-Davidenkov model along with the empirical relationship of damping ratio and shear strain to build the regularity of the shear modulus and damping ratio versus the changes of shear strain. Consequently it proposed the recommended value of the shear modulus G/G
max and the damping ratio D for the marine structured clay within the strain range of 5×10−6∼5×10−3. The research findings can provide technical foundation for the engineering design, construction and anti-seismic analysis of Zhanjiang structured clay.
Combined Statistical Analysis and Management Measure Optimization of Prefabricated Construction Projects
Authors: Li Chao 
Published: November 2020

Abstract
China’s prefabricated buildings appear increasingly mature in their techniques thanks to the needs of developing green buildings and the impetus of national policies enacted in various levels. Despite that, deficiencies are still common in comprehensive results and management, impeding the further development of China’s prefabricated buildings to a certain extent. This paper conducts an analysis of the project results and a comparative analysis of the combined statistics pertaining to the identically designed prefabricated structures and cast-in-place concrete ones utilized in a residential project based on the method of combined statistical analysis. It is demonstrated that prefabricated buildings prove superior in quality and schedule, and meanwhile have some disadvantages that are also revealed in this paper. The analysis serves as a basis for effective measures of optimizing the management of prefabricated construction projects to be proposed so as to further boost the results of prefabricated buildings.
A new type of PHC pile-sinking technology: Drilling with PHC Pipe Cased Pile and its development directions
Authors: Hou Zhenkun , Tang Mengxiong , Hu Hesong , Lin Zegeng , Chen Yining , Zhao Shiyuan , Zhang Shuo 
Published: November 2020

Abstract
Pile foundation has unique advantage in reducing the settlement of the upper structure and improving the foundation bearing capacity, while Drilling with PHC Pipe Cased Pile (DPC Pile) is a newly developed non-extruded soil PHC tubular pile which integrates drilling-pile sinking-dumping simultaneously to solve the pile sinking problem of large diameter (800 ∼ 1400mm) pipe pile. It solves the problem of pile sinking caused by large pile diameter or hard soil layer, breaks the situation that the pipe pile foundation can only be limited to small diameter and size, and broadens the applicable scope of engineering geology of pipe pile. It realizes the full rock-socketed of the pile tip (which can enter the middle and weak weathering stratum), improves the bearing capacity of single pile, and gives full play to the advantages of pipe pile material with higher strength. It has little damage to the pipe pile and little noise, being relatively environmentally friendly, as well as plays a major demonstration role in leading the new direction of the development of green, energy-saving and environmental protection pile foundation, conforming with the advanced development trend of upgrading traditional advantageous industries to high-tech manufacturing and construction technology with promising market.
Research on the Incremental Cost and Benefit of Green Building Based on the Whole Life Cycle
Authors: Wang Bin , Luo Lei , Wang Feiran 
Published: November 2020

Abstract
With the continuous development of the global economy, environmental and resource problems have become more and more serious, and sustainable development has become an inevitable trend. Among them, green buildings are a new type of industry in the construction field, which can avoid serious pollution problems. Based on previous work experience, this article summarizes the constituent elements of the incremental benefits of green buildings. The author discusses the incremental cost analysis from the following five aspects. They are the decision-making phase, the design preparation phase, the construction phase, the maintenance operation phase, and the demolition and recovery phase.
Application of BIM Technology in Freezing Design of Metro Section Lateral Pump House
Authors: Song Ao , Cai Fu , Lei Wang 
Published: November 2020

Abstract
With such characteristics as deep buried, complex geological conditions and sensitive surrounding environment, a metro section lateral pump house in Zhengzhou is conducted using horizontal ground freezing reinforcement method within metro tunnel, combined with mine excavation and lining. In order to ensure the expected effect of freezing reinforcement, BIM technology is applied in layout test of freezing holes. A 3D parameterized freezing pipe model adapted to stakeout data is build, and mathematical relationship of main model parameters is obtained. The rationality of freezing hole layout is verified through collision detection analysis and formation prediction analysis of frozen soil wall, providing reference for application of BIM technology in freezing design of complex cross passage.
Research on application of building information management technology to engineering project management
Authors: Ma Chongsen , Yang Denglian , Ma Kexin 
Published: November 2020

Abstract
as the construction industry develops, the scale and complexity of construction projects increase as well. Clients are having higher and higher requirements for management levels and quality of the projects, and the traditional extensive management modes no longer meet the needs of the modern construction industry. Meanwhile, the management expertise directly influences a construction company’s development, and introducing building information management (BIM) technology into construction projects cannot only improve the construction management, but promote efficiency and intensive development of construction companies. This paper probes into the application of BIM technology in construction and its impact, with a vision to provide some reference for future projects.
Analysis on the Reliability of Coastal City Transportation from the Perspective of Resilience: A Case Study of Yantai City, Shandong Province, China
Authors: Meng Wei 
Published: November 2020

Abstract
As the global climate continues to change and environmental damage has intensified, it has seriously affected the safety and sustainable development of coastal cities. Improving the resilience of coastal cities has become their strategic consensus to respond to changes. Based on the theory of resilient cities, using complex network analysis methods and taking reliability analysis as the starting point, a coastal road resilience evaluation system was constructed, and the impact analysis and resilience evaluation were carried out using Yantai City as an example. The results show that: 1) Yantai municipal road network (national and provincial road) has high reliability and strong robustness; 2) the network has important road sections with greater influence. Based on this, this article proposes strategies for improving urban resilience.
Spatial distribution characteristics of Foreign Customs Districts in Kwangtung (Guangdong) Province based on geographic information system (1842–1949)
Authors: Liu Qionglin , Chen Yuhua , Chen Siyi 
Published: November 2020

Abstract
The Foreign Customs Districts in Kwangtung (Guangdong) Province were spatial areas under the customs business jurisdiction established on the basis of location. Such Districts were under the Commissioner of Chinese Maritime Customs during 1859–1949.Since then, the number of Foreign Customs Districts had grown from two in the late Qing Dynasty to 11 in the Republic of China, which accounted for nearly half of the Chinese Maritime Customs Districts (19).They also gradually developed a vertical spatial pattern system, which was composed of three levels, namely, the head office, sub-offices and barriers. This thesis analyzes the characteristics of the spatial distribution of the Foreign Customs Districts, which are located at the junction of China’s land and sea resources by mathematical graph analysis methods, such as kernel density estimation, geographic concentration index, and imbalance index method. The study aims to provide a case study of the spatial structure of the Foreign Customs Districts in the modern Chinese reference.
Concrete seismic configuration and detailing comparison between China and Sri Lanka
Authors: Ding Zhiquan , Fu Jinxi , Yu Bilong 
Published: November 2020

Abstract
With the implementation of the “One Belt One Road” strategy, more and more Chinese companies are taking part in the engineering market in Sri Lanka. As BS codes are applied locally, concrete seismic configuration and detailing are different from Chinese ones. Therefore, the authors summarized the differences of planar and vertical irregularities, material properties and stirrups, column and beam between RDMSE and GB50011 to provide easy reference for engineers who are going to do projects in this country. It can be found that generally the planar and vertical irregularities are similar but the GB50011 have more detailed requirements; the steel strength and its elongation are similar in the two codes; column’s axial compression ratio limit in RDMSE are 44% lesser than the one in GB50011; and beam’s maximum reinforcement ratio in RDMSE is 20% lesser than the one in GB 50011.
Research on Simplified Modeling of All-steel Buckling-restrained braced frame
Authors: Zhang Xu Yang , Hong Ping 
Published: November 2020

Abstract
Buckling restrained brace is an excellent shock-absorbing and energy-dissipating component, which is often used in frame structures. The buckling restrained brace frame system includes beams, floors, columns, and bracing members. In the finite element analysis, there are highly nonlinear problems in concrete structures and supporting members. The calculation efficiency is low. In order to optimize the finite element analysis process of the structure, this paper uses a simplified model based on the core material constitutive model and equivalent stiffness. Through the comparison between the original model and the simplified model, it is found that the inter-layer displacement is basically consistent with the maximum error of about 5%, and the calculation efficiency is improved by about 65 times.
Deformation Monitoring and Simulation Analysis of Deep Foundation Excavation Construction for subway station
Authors: Wang De-Yong , Wu Kunpeng , Wang Jing , Deng Kai-Fang 
Published: November 2020

Abstract
Based on the excavation of deep foundation pit near water for subway, retaining structure of the foundation pit and its deformation monitoring program were designed; in-situ monitoring data of the retaining structure deformation in the foundation pit were analyzed. The horizontal deformation of the retaining structure changing with the excavation depth and time were carried out. 3D finite element model was built to simulate the do construction process of the station foundation pit; FEM results and in-situ monitoring results of retaining structure deformation were compared. The results showed that: the retaining form with steel support and supporting pile had good limit to the lateral deformation of the foundation pit soil. The results calculated by FEM were consistent with the in-situ monitor results; according to monitoring data and the results of numerical simulation, the next deformation law and maximum deformation of the foundation pit excavation were predicted, which showed that foundation pit retaining structure design was reasonable and safety. The simulated results provide valuable reference for these similar engineering.
Research on Application of Ground Penetrating Radar in Detecting Underground Void Areas and Pipelines
Authors: Chen Zhijun 
Published: November 2020

Abstract
With the development of the urban process, the demand for pipeline detection in urban underground vacant areas is becoming more and more urgent. This article attempts to use geological radar detection methods. First, FDTD forward simulation is performed on common underground vacant areas and pipelines to analyze electromagnetic wave propagation and imaging Characteristics, and finally select the site where the water channel is buried for on-site measurement; the results show that the geological radar evacuates the underground, the pipeline detection effect is obvious, the on-site measured image signal is greatly disturbed, and the simulated vacancy zone and pipeline signals are simulated The original feature can provide positive help for the discrimination of the measured image. Similarly, the inversion of the measured image can improve the accuracy of the discrimination.