bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis of the stability of the construction phase of rigidly constructed bridge based on pile-earth effect
Authors: Zhu Qinghua , Tian Zhongchu 
Published: June 2021

Abstract
In the rapidly emerging Yunnan-Guizhou-Sichuan region, high-pier and long-span bridges are mostly high-pier and long-span continuous rigid-frame bridges over 100 meters, and the stability of their high-piers becomes more and more important. In order to study the stability of the structure under the action of pile-soil, the Wugong Bridge in Guizhou was used as a supporting project, and a large-scale finite element software was used to establish a construction model considering the effect of pile-soil. The influence of this type of bridge on the linear elastic stability of the structure under the action of pile-soil and the geometric nonlinear stability after considering the deflection of the structure is compared and analyzed.
Optimization of Suspender Tension Scheme of Cast-in-Situ Tied Arch Bridge with Support
Authors: Hao Yang 
Published: June 2021

Abstract
The suspender tension sequence and construction cable force of tied arch bridges have a greater impact on the internal force and deformation of the structure. In order to obtain a reasonable suspender tension plan, make sure that the internal force of the structure meets the specific requirements and is evenly distributed during the construction process to avoid the excessive internal force mutation, seven suspender tension schemes were proposed. Combined with the example of a half-through concrete-filled steel tube tied arch bridge project, this scheme introduces the “kurtosis coefficient” evaluation index, and compares and analyzes the changes in the internal force of the structure under different suspender tension schemes. In this paper, the pros and cons of each scheme/part were also discussed. The results show that the difference between the internal force of the bridge and the cable force during the bridge completion stage of each scheme is relatively small, which has a greater impact on the internal force of the bridge during the construction phase. Among them, the symmetrical sequential tension scheme is convenient for construction, but the local position (such as arch foot, arch top, 1/4 arch rib) the internal force changes obviously, and there will be a large peak value, which will affect the safety of the structure during the construction process; the symmetrical interval tension plan can improve the structural force condition and reduce the internal force peak value, but the overall trend is basically unchanged; the internal force distribution of the symmetrical alternating tensioning scheme is uniform, without major sudden changes, and no obvious peaks, so that the safety of the bridge construction process is more guaranteed.
Research on glacier DEM extraction method based on ASTER Data
Authors: Zhang Yashuang , Wu Haiman , Liu Deli 
Published: June 2021

Abstract
The greenhouse effect has led to a large area shrinkage of glaciers in the west of China, resulting in great changes in glacial landforms. In this paper, we use remote sensing satellite to obtain timely and accurate DEM, and use remote sensing technology to process DEM effectively, so as to obtain high-precision results, which can be used as the basic model to study glacier area change. In this paper, the DEM of Malan ice cap in Xinqingfeng is extracted from the orthoengine module of PCI, and the results of DEM obtained are compared with the reference DEM by using aster stereo image pair, and the results of Aster meeting the accuracy requirements are analyzed, which is helpful for the application of Aster stereo image pair in DEM production process.
Study on Time-Space effect and earth berm of foundation pit
Authors: Ruifang Wang , Luolan  , Juhua Pi 
Published: June 2021

Abstract
Excavation to the bottom of the pit after the expiry date, due to time-space effect, the shear strengths of soil are decrease, which produce safe hidden trouble. The mechanism of supporting structure and backfill of earth berm is analyzed in the paper. Combined with a commercial and residential complex foundation pit in Wuhan as the engineering background, according to the shear strength index of the soil after the foundation pit is retrieved from the foundation pit monitoring data after placing, the safety of the foundation pit is calculated. Calculated by finite element software, The stability coefficient of foundation pit decreases and the horizontal displacement exceeds the allowable value in the code if no action is taken after placing. After reasonable slope top width and slope ratio were adopted to backpressure backfill of the pit, the construction of residential property adjacent to commercial plot should continue until completion. The foundation pit monitoring data are normal during the time, which indicated that the bottom earth berm with back pressure can reduce the horizontal deformation and increased stability of the foundation pit, this method can provide some reference for similar foundation pit treatment.
Failure mechanism of subway structure with different central columns based on Daikai Station
Authors: Wu Fengyuan , Xu Huaiyu , Liu Tong , Wang Qinghe 
Published: June 2021

Abstract
The central columns of the Daikai Station in Kobe City were severely damaged due to Hanshin earthquake in the year 1995, leading to serious ground collapse. To evaluate the behavior of underground structures, the finite element model of Daikai Station was established using ABAQUS, and benchmarked against the measured data. Furthermore, the central column was replaced by concrete-filled steel tube (CFST) column to illustrate the response under the earthquake action. Results show that the central column of the station is one weak part of structure. Compared with the ordinary reinforced concrete (RC) structures, using CFST central column can enhance the overall rigidity of the structure and greatly improve the seismic performance of the underground structures.
Fire evacuation in complex underground space of personnel
Authors: Liu Jiaxi , Zhang Rui , Sun Li , Yan Weidong 
Published: June 2021

Abstract
As the consequences of building fire evacuation continue to be severe, some experts and scholars have proposed to combine building information modeling (BIM) technology with geographic information system (GIS) technology to construct a three-dimensional space scene of building fire evacuation. BIM has the advantages of refined three-dimensional modeling, and with the help of evacuation software, people evacuation and its characteristics are simulated, GIS has powerful spatial analysis functions to analyze the path. In this kind of evacuation simulation method, the two technologies complement each other to achieve quantitative analysis of qualitative indicators and efficient visualization of evacuation emergency management. This paper summarizes and analyzes the research on personnel evacuation in recent years by summarizing the current research situation in China, and puts forward the existing problems, hoping to provide ideas for the further research.
Simulation of interception capacity of Nanhe initial rain storage tanks
Authors: Wang Ziming , Gao Jian , Du Zhijun , Zhang Ye , Lai Xijun 
Published: June 2021

Abstract
River pollution sources are generally divided into point source, non-point source and internal source, non-point source pollution is mainly urban surface runoff. In this paper, the non-point source pollution model of SWMM in Nanhe region is constructed, and the water quantity and quality are verified by the measured data, and the verification results are in good agreement with the measured data. On this basis, the detention time and the interception amount of initial rain are analyzed. The results show that after intercepting the initial rainwater, the pollutants into the river are significantly reduced, and the lower the frequency is, the better the interception effect of the storage tank on the initial rainwater is. Comprehensive analysis shows that the overall removal rate of pollutants in each frequency of the four outlets of the storage tank can reach 37~39%.
Investigating the impact of Xuanmen Project on water residence time in the Yueqing Bay
Authors: Li Xinwen , Ying Chao , Liu Yong , Yao Wenwei 
Published: June 2021

Abstract
A 2D numerical model was used to investigate the impact of Xuanmen Project on water residence time in Yueqing Bay. Three model scenarios were designed to calculate the residence time. The WRT of CASE00 was obviously smaller than that of CASE01 and CASE02. While the WRT of CASE01 and CASE02 was relatively comparable. As for the individual scenario, the WRT increased from the bay month to the bay head. In CASE00, The average WRT of the outer bay, middle bay and inner bay was 21.6, 38.5 and 50.6 days, respectively. The average WRT of the entire bay was 32.7 days. In CASE01, a significant increase of WRT was observed in the entire bay. The average WRT of the entire bay was 46.1 days. The WRT increased about 10 days in the lower bay and 20 days in the northern bay compared to CASE00, indicating a significant impact of the Xuanmen Dam. In CASE02, the average WRT of the entire bay was 48.2 days. The WRT increased less than 5 days compared to CASE01, implying that the land reclamation had a minor impact on the WRT of the Yueqing bay. The flushing homogeneity curve (FHC) was used to study the spatial characteristic of flushing. The steepest curve occurred in CASE00 and the flattest curve occurred in CASE02, implying an increased inhomogeneity due to Xuanmen Project.
Model tests and theoretical analysis of the vertical vibration of a single pile in saturated sandy soil
Authors: Li X Y , Li Q , Hu L , Huang L Q 
Published: June 2021

Abstract
The study of vibration dynamic response of pile foundation has critical applications for seismic structure design. In this paper, firstly, the vibration characteristics of single pile with different length to diameter ratios under different vibration frequency loads were studied by the foundation pile model test method. Moreover, the amplitude-frequency curves of single pile vibration are plotted by using Fourier transform. Then the theoretical model of the pile-soil-cap system under sinusoidal periodic vibration load is established by using saturated porous medium theory, and the amplitude and frequency curves are obtained. Numerical results show that the theoretical solution can be in good agreement with the experimental results, which verifies the validation of the theoretical model. Furthermore, the resonant frequency is proven to be negatively related to the length to diameter ratio of the pile under the same pile diameter.
Application of BIM technology in prefabricated buildings
Authors: Liu Jingjing , Zou Zuxu 
Published: June 2021

Abstract
Based on the disadvantages of the current traditional construction mode, this paper analyzes the status quo of the gradual disappearance of demographic dividend and discusses the necessity of developing prefabricated buildings. This paper elaborates the advantages of applying BIM technology to prefabricated buildings in theory. Finally, the application of BIM technology in prefabricated buildings is demonstrated by introducing the construction process of a prefabricated community project. Through the example demonstration, it can be seen that BIM technology integrates all the information of the construction project, which can not only standardize the construction site and make the structural design more efficient, but also provide an efficient platform for communication among various parties. This exploration plays a positive role in promoting the popularization and development of prefabricated buildings.
Undrained solution of cylindrical cavity expansion for unsaturated soils with modified Cam-clay model
Authors: Zhai Zhanghui , Ma Shengjun , Zhang Yaguo , Zhang Changliang 
Published: June 2021

Abstract
This paper develops a new semi-analytical approach for undrained cylindrical cavity expansions in unsaturated soils. The unsaturated soil behavior is described within a simple, yet effective, critical state-based elastoplastic framework with suction being treated as a hardening parameter. Different from its saturated counterpart, the cavity expansion problem in unsaturated soils involves five basic variables, namely, the three stress components, specific volume, and suction. A constitutive equation for the water phase, in addition to the soil elastoplastic constitutive relationship plus the radial equilibrium condition, is therefore required to construct a set of coupled, self-contained differential equations for the solution of the cavity boundary value problem. With the introduction of an auxiliary variable, all these governing equations can be expressed in terms of the Lagrangian formulation and then simultaneously solved through the standard numerical procedure. The numerical example results show that the suction has significant hardening effects on the overall cavity expansion responses and, in particular, the stress trajectories calculated for a representative soil element at the cavity surface. It is also interesting to observe that the shear dilation phenomenon, developed during the course of cavity expansion, usually occurs in relatively dense unsaturated soils with high unsaturated suction.
Electrical design of 4×50MW small thermal power plant
Authors: Feng X J , Luo J 
Published: June 2021

Abstract
The paper is the primary and secondary electrical design of a 4×50MW small-scale power plant. We selected the number and type of main transformers of our factory, plan to design two alternatives for main electrical wiring. The equivalent circuit diagram is simplified, and each short-circuit point is calculated in order to provide data protection for the subsequent selection, and then combined with the calculation results of each short-circuit point to select and verify the types of various equipment in the power plant.
Seismic Design of Tied Arch Bridge in High Earthquake Region Based on Friction Pendulum Seismic Isolation Bearing
Authors: Xu Jun , Li Yanfeng , Liu Kunpeng , Qiao Wei 
Published: June 2021

Abstract
Taking the through-type tied arch bridge with a span of 144m as the research object, the working principle of the friction pendulum bearing is introduced; through the finite element simulation analysis, the seismic performance of the Yunnan Nujiang Dukou Bridge is studied, and the seismic safety evaluation is used to give. The three seismic wave time-acceleration time-history curves are respectively analyzed for the seismic performance of the through-type tied arch bridge when the friction pendulum vibration isolation support and the ordinary steel spherical hinge support are used. The research results show that the use of friction pendulum damping and isolation bearings can delay the vibration response of the superstructure from the seismic excitation, thereby achieving the effect of prolonging the vibration period of the structure and reducing the possibility of resonance of the structure under the action of an earthquake. At the same time, when the friction pendulum support swings back and forth, part of the seismic energy can be consumed by the friction between the wear plates. Compared with ordinary steel spherical hinge bearings, the use of friction pendulum vibration isolation bearings can make the piers of the arch bridge participate in the earthquake resistance together, and the internal force distribution of the piers is also more uniform. However, the horizontal displacement of the pier beams increases significantly, and corresponding protection needs to be taken.
Analysis on the Protection and Reuse of Urban Industrial Architecture Heritage
Authors: Dong Minghang , Jin Guanghu 
Published: June 2021

Abstract
Since the reform and opening up, China’s urbanization has developed rapidly. Due to the reorganization of the functional structure of the urban center due to the upgrading and adjustment of the urban industrial structure, many old industrial areas in the city have entered the stage of transformation, integration, and even dismantling. Where should the industrial heritage go is an important topic of current social concern. As a materialized industrial culture, old industrial buildings in cities should not be blindly abandoned or blindly overturned. They should be classified and protected or transformed and reused according to their value attributes, during the renovation process, AHP can be used to evaluate the green renovation of industrial buildings, to seek the rebirth of the industrial architectural heritage in the new era.
Application of supporting construction technology for deep foundation pit in Building Foundation Engineering
Authors: Zhang Zhuan , Zhang Sheng , Lu Siming 
Published: June 2021

Abstract
This paper discusses and analyzes the Construction Technology of deep foundation pit support in foundation engineering. This paper is based on a residential district project in southern Jiangxi Province, this paper expounds the theoretical definition, basic requirements, construction standards, several common construction techniques of deep foundation pit support and the suggestions and ideas of foundation engineering construction. This paper tries to provide a theoretical reference for the enterprises and workers involved in the construction of foundation engineering.
Application and Innovation of BIM Technology in Municipal Projects
Authors: Wu Bei , Liu Hehang , Li Anran , Huang Zhiqiang 
Published: June 2021

Abstract
In this project, BIM Technology is introduced into the design and construction of frame bridge to solve the problems of insufficient bearing strength of row piles outside foundation pit and collision between frame bridge and road. Making full use of the data of physical model, sensor update and operation history, this paper analyzes the project construction and operation, and optimizes the construction scheme with the advantage of “BIM + Digital twin”. Finally, the application of BIM Technology in this project can effectively solve some problems in the design and construction process of frame bridge, improve the design quality and save the cost, which has a certain reference significance for the same type of projects.
Study on the Selection and Application of Environmental Protection Materials in Contemporary Architecture from the Perspective of Phenomenology
Authors: Zhu Xianzhu 
Published: June 2021

Abstract
In order to analyze the selection and application of environmental protection materials in contemporary architecture from the perspective of phenomenology, this article takes advantage of data and theoretical analysis methods to explore the works of three contemporary architects, namely Wang Shu, Steven Holl and Peter Zumthor. This article also makes a comparative analysis of materials. It aims to explain that different types of materials show different ecological characteristics. According to the research, hypotheses can be made: one is to realize the ecology of traditional materials through recycling; the other is to realize the ecology of natural materials through obtaining materials from local sources; the third is to realize the ecology of modern materials through the combination of high technology. Additionally, the application of materials in construction is diversified, and it usually uses a variety of materials and construction methods in the same building. In terms of materials, architectures explored in this paper, on the one hand, reflect the place spirit and perceptual feeling of phenomenology; on the other hand, it is express the concern for the sustainable development of the environment.
Application research on the design of assembled shear wall joint based on BIM technology
Authors: Li Wei , Xiong Long , Liu Yu-Jie , Li Si-Jie 
Published: June 2021

Abstract
In response to the strategic slogan of sustainable development, China has intensified efforts to develop prefabricated buildings, so the node design of prefabricated buildings becomes particularly important. In this paper, a prefabricated residential building project in Shenyang is taken as an example. BIM technology is introduced into the design of prefabricated shear wall joints based on BIM visualization and parameterization features. The main purpose is to optimize the design of partial T-type and L-type shear wall joints, and to conduct optimization analysis through collision detection. The application of BIM technology can greatly improve the efficiency of shear wall joint design, promote the standardization of prefabricated shear wall joint design, further promote the modular design and production of prefabricated components, reduce project cost, ensure project quality, and give full play to the value of BIM technology in prefabricated construction projects.
A Brief Study on the Aesthetics of Modern Financial Architecture in Hankou
Authors: Liu Congru , Lin Mingsen , Li Qing 
Published: June 2021

Abstract
To study the historical evolution and overview of modern financial architecture in Hankou, and to analyze its aesthetic characteristics and aesthetic significance. There are three main styles of modern financial architecture in Hankou: classical revival, eclecticism and modernism. They bring people into the life course and spiritual world preserved by architectural art, and make people understand “existence” in a moment, and “existence” in a philosophical (aesthetic) sense.
Changes in the Gut Microbiota Following Bariatric Surgery Are Associated with Increased Alcohol Intake in a Female Rat Model
Authors: Martin Olivia A , Grant-Beurmann Silvia , Orellana Elise R , Hajnal Andras , Fraser Claire M 
Published: June 2021

Abstract

Aims
We aimed to investigate if differences in gut microbiota diversity and composition are associated with post-operative alcohol intake following bariatric surgery in a rat model.

Methods
Twenty-four female rats were randomized to three treatment groups: sham surgery, vertical sleeve gastrectomy (VSG) or Roux-en-Y gastric bypass (RYGB). Stool was collected pre- and post-operatively and 16S rRNA gene amplification and sequencing was performed. Analysis focused on correlating microbial diversity, type of surgery and alcohol (EtOH) intake.

Results
Pre-operative stools samples on regular diet showed similar taxonomic composition and Shannon diversity among the three treatment groups. There was a significant decrease in Shannon diversity and a change in taxonomic composition of the gut microbiota after rats was fed high fat diet. Post-operatively, the RYGB group showed significantly lower taxonomic diversity than the VSG and sham groups, while the VSG and sham groups diversity were not significantly different. Taxonomic composition and function prediction based on PICRUSt analysis showed the RYGB group to be distinct from the VSG and sham groups. Shannon diversity was found to be negatively associated with EtOH intake.

Conclusions
Changes in the taxonomic profile of the gut microbiota following bariatric surgery, particularly RYGB, are associated with increased EtOH intake and may contribute to increased alcohol use disorder risk through the gut-brain-microbiome axis.