bluuebunny/crossref_metadata_2025_split huggingface dataset:
Transport modelling of sediment re-suspended during submarine cable laying operation
Authors: Wang Lele , Shao Jie , Yao Wenwei 
Published: July 2020

Abstract
A two-dimensional depth-averaged hydrodynamics and suspended sediment transport numerical model is presented, which is discretized with finite volume method based on a triangular mesh. It is applied to investigate the diffusion and transport characteristics of sediment re-suspended during a demonstration staged submarine cable laying across the Jintang Channel, Zhejiang Province, China. The model is validated primarily against the observed data during the spring, middle and neap tidal cycles in July 2015. The model results show well agreements between the predicted and observed processes of tidal level, velocity and suspended sediment concentration (SSC). The validated model is then applied to simulate the distribution of the tidal velocity and additional SSC during the cable laying. The results show a close relationship between the additional SSC distribution and tidal hydrodynamics.
Experimental study on water transfer of remolded loess under freezing
Authors: Zhongxiang Liu , Qiujuan Zhou , Wanjun Ye , Zhipeng Zhao 
Published: July 2020

Abstract
The change of the internal moisture field of the loess is an important factor for the study of the cause of the loess engineering disease, and the freezing effect has a certain effect on the change of the internal moisture field of the loess. In order to analyze the law and mechanism of water distribution in the loess under four different factors, the indoor experiments of water transfer were carried out under different temperature gradients and different temperature levels. The results show that:Under the action of freezing, the greater the temperature gradient applied on both ends of the soil sample, the farther away from the top of the steady-state freezing front, the lower the water content increment in the early stage, and the higher the water content increment in the later stage, and the more obvious the change of water content near the steady-state freezing front, the greater the total amount of water migration; For the soil samples with higher dry density, the closer the frozen front is to the top, the increase of water content in the early stage is decreasing, and that in the later stage is increasing; With the increase of the initial moisture content, the water transfer of the soil sample increases, and the position of the steady-state freezing front of the soil sample with different initial moisture content is basically the same; At different temperature levels, the lower the cold plate temperature is, the farther the frozen front is from the top. When the cold plate temperature is in a certain range, the water transfer phenomenon is significant.
Research on the method of testing the performance of equipment for industrial organic waste gas purification
Authors: Jin Huang , Hao Shen , Jinying Xi , xiaoxin Zhang , Ling Lin , Weixiang Chen , Dong Liu 
Published: July 2020

Abstract
The performance of industrial organic waste gas purifier is directly related to the high-quality and high-efficiency operation of industrial organic waste gas purifier. This paper discusses the significance of studying the performance measurement method of industrial organic waste gas purification device, and expounds the performance measurement items, measurement methods and calculation methods of industrial organic waste gas purification device. The study and standardization of the performance measurement methods will help the comprehensive treatment of industrial organic waste gas in China and provide technical support for the implementation of environmental protection policies.
Product Soap from Waste Cooking Oil
Authors: Li Weixin , Guan Rui , Yuan Xiaoyue , Wang Haiyang , Zheng Shuqi , Liu Lu , Chen Xiangyun 
Published: July 2020

Abstract
Waste cooking oil(WCO) is a good candidate as a material to make soap. It is typically cheaper than other oils. In this study, we have investigated the operation of produced soap from waste cooking oil. Phosphoric acid-hydration was provided for WCO degumming. The operating temperatures is 60°C, phosphoric acid concentration is 2% and 4% content of moisture is the optimum technology of degumming. The most favorable decoloring agent is activated clay, WCO and activated clay ratio of 100:5 at 70°C with 30 min treated time. The optimal technology of saponification is that the mass ratio of NaOH and WCO is 0.3:1, saponification temperature is 100°C and the concentration of NaOH is 30%.
Investigation of flow model and flow behavior in typical fractured-vuggy structure of carbonate reservoirs
Authors: Xiaobo Li , Min Yang , Qing Li , Yuewu Liu 
Published: July 2020

Abstract
The storage space and pore structure of fractured-vuggy carbonate reservoirs are complicated. This paper analyzed the flow model for different storage spaces in such reservoir, and proposed the model of free and porous media coupled flow, which is a transition flow pattern between free flow and Darcy flow. The applied flow model for simulation study was the corrected Brinkman equation. Based on the CT scanning images of cores obtained from Tahe Oilfield, we constructed the 3-D digital core and then extracted the distinct factured-vuggy structures. The COMSOL Multiphysics software was employed to simulate pressure field, velocity field, and streamline of single-phase flow in fracture-vuggy area under different differential pressures. Applying three different flow models, we investigated the fluid flow behaviors of free flow, Darcy flow, and free and porous media coupled flow, respectively.
Research on the Temporal and Spatial Pattern of Carbon Emissions of Civil Buildings in Chinese Provincial Cities
Authors: Liu Jing , Yang Tianjiao , Yang Tianyue , Liu Shanshan 
Published: July 2020

Abstract
Based on the statistical data of energy consumption of 30 provinces in China, the carbon emissions of urban civil buildings in China’s 30 provinces from 2006 to 2017 were calculated. Secondly, the tendency value method was used to analyse the changes in carbon emissions of buildings across the country. Spatial distribution of trends and growth rates, using ArcGIS10.5 to analyse the spatial correlation and spatial agglomeration of building carbon emissions across the country, calculating the Global Moran’s I and Local Moran’s I of building carbon emissions data, verifying there is a positive spatial correlation between the carbon emissions of urban civil buildings in 30 provinces in China, and distinguishing the four types of agglomeration of high-high agglomeration, low-low agglomeration, high-low agglomeration, low-high agglomeration types of regional distribution. Finally, this paper provides some emission reduction recommendations for different regions.
Analysis of Stiffening Girder Erection Scheme of Single Tower and Single Span Asymmetric Suspension Bridge
Authors: Wei Jiaxu , Dai Rongwei , Zhang Chonghou , Zhu Xiaojing , Liu Ruidi 
Published: July 2020

Abstract
The paper analyzes four different stiffening girder erection schemes of a single tower and single span asymmetric suspension bridge with the main span of 766m by using parameter analysis combined with finite element numerical simulation. Firstly, this paper proposes two methods to study the reasonable erection time of ground anchor suspender cables, and based on the Midas/Civil finite element software, the erection time of ground anchor suspender cables with four schemes is determined by using backward-calculation analysis method. Then the main cable deformation, cable saddle displacement, horizontal inclination of main cable, internal force of suspender cables and dynamic performance of different schemes are compared. The results show that for Scheme 3 adopted in the project, the deformation of main cable is the smallest, the change of the cable saddle displacement is more slowly, the horizontal inclination of the main cable is smaller, and the bending stiffness is larger. However, the torsional stiffness is small and the flutter stability is not as good as other schemes.
Application of tangent modulus method in nonlinear settlement calculation of foundation
Authors: Zhang Yu-cheng , Hu Hai-ying , Chen Cai-yuan 
Published: July 2020

Abstract
Foundation settlement calculation has been a difficult and hot problem in geotechnical engineering study. The problems lies in the large differences between the geotechnical parameters of field and indoor test. The using of the tangent modulus method based on the field loading test to determine the calculation parameters can overcome this shortcoming, and reflect the non-linear of foundation settlement, which is a new progress of foundation settlement calculation. However, compared with other tests, the in situ plate loading test has higher difficulty, and it is also difficult to reflect the characteristics of deep soil. In this paper, by making use of systematic geotechnical test data by Riverside Campus, Texas A & M University, United States, it first examines the feasibility of the tangent modulus method used in sand foundation nonlinear settlement calculation, and then studies on the tangent modulus calculation methods of adopting lateral pressure test, The CTP test and other field tests to determine the different soil layers and lastly tests the results of loading tests for different plate sizes. The results show that the calculated parameters needed in the tangent modulus method determined by the lateral pressure test, The CTP test and other field tests are feasible. In addition, when the parameters thus determined are used in the tangent modulus method to calculate the load experimental curves of different plate sizes, the calculated nonlinear curve has good consistency with and experimental curves.
Analysis of influence of aggregate stiffness on coarse aggregate movement of asphalt mixture
Authors: Liu W D , Gong X , Xiong J P , Zhou S B 
Published: July 2020

AbstractThe movement law of aggregate is more complicated in the static pressure process of asphalt mixture. In order to analyze the evolution law of the aggregate, the objective of this paper is to develop 3D (3-dimensional) mixture compaction models. The coordination number, void ratio, average contact force, and axial stress are used as indicators to investigate the effects of aggregate stiffness on the law of aggregate movement. The influence of material parameters on aggregate movement was explored from the microscopic level so as to provide suggestions for the design of graded.
Analysis of the Differences between Chinese and Japanese Traditional Wooden Architecture
Authors: Zhou H J , Huang J 
Published: July 2020

Abstract
Buddhism has been the link between China and Japan for more than 1,500 years in terms of architectural technology. With the introduction of Buddhism, Japan has been absorbing and transforming traditional Chinese wooden construction technology into a part of its own culture. The history of Japanese architecture is mostly the process of ingesting and assimilating Chinese architectural culture. The study of Chinese and Japanese wooden architecture is an important supplement to the history of east Asian architecture. This paper starts from the origin of Chinese and Japanese traditional wooden architecture, compares the differences between Chinese and Japanese traditional wooden architecture technology, and analyses the reasons for the differences between Chinese and Japanese traditional wooden architecture from the perspective of natural environment and construction technology.
Researches in Application of Stockade Box Structure in Ancient Dams
Authors: Zhang Handong , Yao Jianfeng , Wang Yijia , Jiang Zhanchao 
Published: July 2020

Abstract
With advantages of stability and long service life, stockade box structure had made significant contributions to water conservancy in ancient times, by reducing the damage caused by flood. This paper focuses on the structure’s working principle, effects, mechanical property, etc., and provides improvement suggestions by applying modern scientific and technological approaches, in order to provide reference from the knowledge and design of the ancients in modern water conservancy projects.
Application on credit evaluation and supervision of highway construction enterprise in China
Authors: Zhao Xin-hui , Chu Chun-chao , Gao Ai-ying 
Published: July 2020

Abstract
The credit evaluation of highway construction enterprise is the core of highway construction market credit system, and an important part of building the new credit-based highway construction market supervision mechanism. Because of not only some problems in the current credit evaluation of highway construction enterprise, but also the latest national policy requirement and the actual need of highway construction market, some new improvements were put forward in the thesis. Firstly the new credit evaluation framework system of evaluation of highway construction enterprise was introduced, and then the credit evaluation contents and standards were reined, then the credit evaluation procedure and method were improved in the next part. Finally we put forward the credit classification and supervision measures. An example was showed that the new credit evaluation system was applied on the highway construction enterprise in X province. The results have an important decision-making reference value and practical significance on strengthening the credit evaluation and management of highway construction market, and that will further standardize and create an honest trustworthy market environment, and advance the modernization of highway construction market governance system and governance capacity.
Shear Behavior of Prefabricated Segmental Epoxied Joints Considering Defect Degree in Cemented Surfaces
Authors: Hao Chen , Kai Zhou 
Published: July 2020

Abstract
In order to research the influence of the defect degree of cemented surface on the shear behaviour of prefabricated segmental epoxied joints, the paper considers the defect degree of cemented surfaces on the specimens of epoxied joints with single keys by direct shear test and records the ultimate shear loads and vertical relative slips, the failure modes of the specimens and the normalized shear stress-vertical relative slip curve are analysed, and the measured values of the ultimate shear loads are compared with the existing calculation formula. It can be concluded that the shear capacity, normalized shear stress and plastic deformation capacity of the specimens of epoxied joints with single keys without defect in the cemented surfaces have been improved which are compared with the specimens with 10% defects and the specimens with 20% defects. The BUYUKOZTURK O formula overestimates the shear capacity of the specimens with 10% defects, and underestimates the shear capacity of the specimens with no defects and10% defects; The formulas of Sun Xueshuai and Yuan Aimin underestimate the shear capacity of the specimens with no defects, 10% defects and 20% defects. It is not appropriate to ignore the effect of the defect degree in the cemented surface on the shear capacity of the epoxied joints.
Study of Simplified Calculating Model on Friction Correlated Prestress Loss for PC Bridges
Authors: Shi Huibin , Guo Qi 
Published: July 2020

Abstract
The friction correlated loss for prestress takes up a comparative large proportion in the total prestress loss, which is hard to control and brings unsafe factor to the Prestressed Concrete (PC) bridges. For better quantification, a simplified calculating model for friction correlated prestress loss was put forward in a universal way based on comparatively sophisticated prestressing loss method in current code. The determinant simplified coefficients may also provide some references in calculating the friction relevant losses for prestress of the space curve tendon in other PC bridges.
Study on factors influencing the performance of reactive powder concrete
Authors: Yan Xikang , Wen Jiapeng 
Published: July 2020

Abstract
Reactive powder concrete (RPC) is a new type of ultra-high performance concrete(UHPC). There are many related factors that affect the mechanical properties of RPC. This paper researches on the effect of curing temperature and steel fiber type on the material strength. The research results show that within a certain range, the strength of RPC increases with the increase of curing temperature, and the maximum strength can be obtained when the curing temperature is 90°C. In the actual project, the best curing temperature is 75 °C. And the study has shown that blending fine steel fibers can optimize its mechanical properties.
Research on static performance of T-shaped stiffener Reinforced Box Space joints under Spatial Loading
Authors: Jin L , Zhao S Q 
Published: July 2020

Abstract
The problem of inner partition reinforced box column are the weld quality, time-consuming and laborious. In view of the problem, T-shaped stiffener externally reinforced box space beam-column joinst are proposed in this paper. The finite element simulation was used to study the evolution of the initial stiffness of the T-shaped stiffener reinforced joints under spatial static loading, and the mechanism of the mutual force transfer between the T-shaped stiffener and the H-shaped beam and square column are revealed. The beam section height, the width of the T-shaped stiffener web, the height of the T-shaped stiffener flange are analyzed which are the T-shaped stiffener geometric parameters. The static performance of the reinforced box space joints are gained. The results show that the plastic hinge of the T-shaped stiffener reinforced the space joint is formed in the distance from the beam flange which is the point connecting with the end of the T-shaped stiffener. Such as the stress distribution is reasonable. The bearing capacity, plastic limit bending moment and initial stiffness of the box space joint can be effectively improved with increasing of the beam section height, stiffener web width and stiffener flange height. Therefore, the external T-shaped stiffener reinforced square steel column H-beam space joint has good static performance.
Research on the Construction Mode of European Low-Carbon Buildings
Authors: Wang Chuan , Zhang Hui , Liu Sufang 
Published: July 2020

Abstract
In the background of global warming, developing low-carbon economy and low-carbon buildings is the development direction and social goals of revitalizing the economy and saving energy in Europe. This paper introduces the present status of the development of low-carbon buildings in Europe, summarizes the construction practice of low-carbon buildings, and explores the development model of low-carbon buildings in Europe.
Optimization study on super-high arch dam temperature control standard and measure
Authors: Youzhi Liu , Jintao Li , Wenfu Chen , Guoxin Zhang , Yaosheng Tan 
Published: July 2020

Abstract
Currently, for several super-high arch dams under construction which have caused a series of issues after being strict with temperature control standards, this paper has a sensitivity analysis through a variety of programs and a systematic study about the impact which the highest temperature, the cooling height, the same cooling zone height and other key factors have on the temperature stress of the construction period dam, and then proposes that the temperature control standard and the selection of measures of the ultra-high arch dam are relatively stricter than the regulatory requirements of the traditional dam as long as we have a reasonable control about the temperature drop on the time domain and the temperature gradient on the spatial domain. However we need not make all the dams as a constraint zone to have a temperature stress control. After separated from the basis constraints zone, the maximum temperature of the dam can increase 3-4 °C at least. In addition, while the dam’s same cooling zone height is controlled by the 0.2L (L for the bottom width), it can meet the requirements for filling and anti-cracking without using two cooling areas. This finding will help reduce the difficulty of height control of the cantilever when the dam is under construction.
Tectonic Methodology on the Façade Composition Pattern of Prefabricated Building Enclosure Wallboards
Authors: Wang Chao , Li Fanrong , Zhang Jingyi , Guo Jinzhe , Li Shengcai 
Published: July 2020

Abstract
Building industrialization have been becoming mainstream in China. But the challenge to balance the diversity and standardization on the form of prefabricated building seems to be hardly overcame. The methodology for facade design related to prefabricated buildings is discussed in this paper. Enclosure walls were divided into a few modular panels based on the distance between columns, floor height, windowsill’s heights, and so on. Then, the panels were assigned different function according to their position on the building elevation. Some of the panels were combined with solar photovoltaic cell, some were designed into polyhedral wall panels with cavity embedded building service equipment and pipelines. The panels were assembled in terms of aesthetic principles and their roles. Possible composition pattern has been probed and corresponding suggestion have been offered. Nantong Dongsheng international business centre has been taken as an example to verify the operability of the methodology on the facade composition pattern in design process.
Research on Construction Control of Semi Hybrid Steel-concrete Comoposite Cable-stayed Bridge
Authors: Qi Tiedong , Yuan Qin , Ma Lei , Liu Dianyuan , Wang Xiaolei 
Published: July 2020

Abstract
Hong-shui river especially big bridge is a kind of semi hybrid steel-concrete comoposite cable-stayed bridge. The erection of Guizhou side span adopt the incremental launching construction method, which was composite beam; The erection of midspan adopt cable-stayed buckled method, which was composite beam; The erection of Guangxi side span adopt support frame casting in situ construction method, which was concrete π type girder. The paper focus on the characteristics of the asymmetrical structure forma and asymmetric construction method of Hong-shui river especially big bridge, discussing the key contents of construction monitoring, which can offer reference and consulting for related engineering.
Smoke movement analysis in an inner corridor building with vents on the stairwell
Authors: Zhang Xiaotao , Du Lingling , Zhang Yue , Pei Guihong 
Published: July 2020

Abstract
One inner corridor building was constructed by computational fluid dynamics (CFD) software and a series of CFD simulations were conducted in the building with/without a vent on the stairwell for different negative pressure differences induced by the surrounding wind. The result shows that the area affected by smoke is significantly decreased when the vent is set on the stairwell and the height of neutral plane increases significantly. However, it will increase the spread trend of smoke in low floors. The surrounding wind will produce negative pressure differences at the vent. For the high floors, with the increasing of negative pressure difference, the area affected by smoke is further reduced, but the degree of reduction is not obvious. For the low floors, the trend of smoke spread has not been alleviated with the increasing of negative pressure difference.
Research on the Current Situation and Countermeasures of English Teaching in Vocational Colleges in the Era of Big Data
Authors: Ruolan Li , Guangyong Liu 
Published: July 2020

Abstract
This paper discusses the characteristics of big data and status of it in the field of English teaching, expounds the problems existing in current English teaching in vocational education, and analyses the ways to realize the optimal allocation of teaching resources, the transformation of teachers’ functions and roles, the development of individualized students and the teaching environment on the basis of big data. It aims to integrate classroom teaching with practical situations, truly transform students’ knowledge into practical English application skills and better serve their major.