2021 4th International Symposium on Traffic Transportation and Civil Architecture (ISTTCA)最新文献_第8页

Evaluation System of BIM Application Ability Based on Engineering Information Design 基于工程信息设计的BIM应用能力评价体系

2021 4th International Symposium on Traffic Transportation and Civil Architecture (ISTTCA) Pub Date : 2021-11-12 DOI: 10.1109/ISTTCA53489.2021.9654475

Ye Zhou, Yunming Cao, Jia Xu, Yuping Zhang, Wenhan Zhang

引用次数: 0

Effect of particle size distribution on properties of cement 粒径分布对水泥性能的影响

2021 4th International Symposium on Traffic Transportation and Civil Architecture (ISTTCA) Pub Date : 2021-11-12 DOI: 10.1109/ISTTCA53489.2021.9654736

Bo-Tsun Chen

引用次数: 0

Research on high voltage shore power supply based on DC bias suppression strategy 基于直流偏置抑制策略的高压岸电源研究

2021 4th International Symposium on Traffic Transportation and Civil Architecture (ISTTCA) Pub Date : 2021-11-12 DOI: 10.1109/ISTTCA53489.2021.9654474

Yue Yu, Qi-liang Zhao, Yuzhen Liu, B. Wang, Mingran Zhang, Zhihui Cao, Q. Yin

{"title":"Research on high voltage shore power supply based on DC bias suppression strategy","authors":"Yue Yu, Qi-liang Zhao, Yuzhen Liu, B. Wang, Mingran Zhang, Zhihui Cao, Q. Yin","doi":"10.1109/ISTTCA53489.2021.9654474","DOIUrl":"https://doi.org/10.1109/ISTTCA53489.2021.9654474","url":null,"abstract":"DC bias of transformer will lead to large distortion of excitation current. For the high voltage shore power supply with fundamental frequency isolated output, its output characteristics are greatly affected by the DC bias of the transformer, so the DC component of the high-high cascade H-bridge inverter current must be eliminated in the design of control strategy. Firstly, the main circuit topology of high voltage shore power supply is given, and the DC bias phenomenon of transformer is analyzed. Then, a DC bias suppression method of high voltage shore power supply is proposed. The positive feedback of DC component is introduced to affect the output voltage of the converter chain of shore power supply. By adjusting the PWM pulse width in real time, the DC voltage component is used to compensate the DC current, which fundamentally realizes the compensation and suppression of DC bias. Finally, the test platform of high voltage shore power supply is built, and the experimental results show that the proposed control strategy is correct and effective.","PeriodicalId":383266,"journal":{"name":"2021 4th International Symposium on Traffic Transportation and Civil Architecture (ISTTCA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129731213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Impact of Exterior Windows and Shading on Building Energy Consumption 外窗与遮阳对建筑能耗的影响

2021 4th International Symposium on Traffic Transportation and Civil Architecture (ISTTCA) Pub Date : 2021-11-12 DOI: 10.1109/ISTTCA53489.2021.9654468

Yongxin Zhang, Rongdan Diao, Zikang Wang, Yuan Zheng, Xinrong Lei

{"title":"The Impact of Exterior Windows and Shading on Building Energy Consumption","authors":"Yongxin Zhang, Rongdan Diao, Zikang Wang, Yuan Zheng, Xinrong Lei","doi":"10.1109/ISTTCA53489.2021.9654468","DOIUrl":"https://doi.org/10.1109/ISTTCA53489.2021.9654468","url":null,"abstract":"China's building carbon emissions are generally on a continuous growth trend. In 2017, it was 2.044 billion tons, an increase of approximately three times from 668 million tons in 2016, with an average annual growth rate of 6.8%, and building energy consumption accounted for 21.70% of the national energy consumption. Therefore, a typical single building in Wenzhou was selected as the research object, and based on Energy Plus software, the effect of thermal performance of exterior windows and shading on building energy consumption was simulated and studied. The study found that the most representative energy-saving combination of exterior windows is the combination of $mathbf{u}=3.4$ PVC plastic steel type and Low-e high-transmittance glass, and the combination of $mathbf{u}=2.8$ PVC plastic steel type and ordinary insulating glass; horizontal sun shading the most representative is the energy-saving combination forms are perspective ratios of 0.4 and 0.7, and sun visor pick out the height 200mm and 1100mm; the most representative energy-saving combination forms for vertical sunshades are perspective ratios of 0.3 and 0.4, and sun visor pick out the height 100mm and 1100mm; the most representative energy-saving combination form of integrated shading is perspective ratios of 0.3, and the pick-out size of the sun visor is 200mm, 1100mm and 1200mm; the most representative energy-saving combination form of the louvered shade is the perspective ratios of 0.3, 0.4 and 0.5, and the louver angle is 0°, 20° and $160^{circ}$.","PeriodicalId":383266,"journal":{"name":"2021 4th International Symposium on Traffic Transportation and Civil Architecture (ISTTCA)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121486361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Centrifugation method for reducing heavy metal content in sediment 一种降低沉积物中重金属含量的离心方法

2021 4th International Symposium on Traffic Transportation and Civil Architecture (ISTTCA) Pub Date : 2021-11-12 DOI: 10.1109/ISTTCA53489.2021.9654727

Fu Jianbao, Li Shunqun, Chen Lihang

{"title":"Centrifugation method for reducing heavy metal content in sediment","authors":"Fu Jianbao, Li Shunqun, Chen Lihang","doi":"10.1109/ISTTCA53489.2021.9654727","DOIUrl":"https://doi.org/10.1109/ISTTCA53489.2021.9654727","url":null,"abstract":"Heavy metal removal is a worldwide problem in the field of sludge treatment. Based on the principle of centrifugation, a new method for reducing heavy metal content in river sediment is proposed in this paper. The implementation process is: (1) adding water to the original sediment and thoroughly mixing to obtain a rinse sediment, which is centrifuged by the centrifuge and obtain the dry sediment; (2) adding water to the primary dry sludge and mixing thoroughly to obtain the secondary leaching sediment, which is centrifuged in a centrifuge to obtain the secondary dry sediment. And so on, until the criteria for design requirement is met. Through four relative centrifugal forces and two centrifugal separation experiments, primary and secondary dry sediment of a certain sediment under four different relative centrifugal forces were obtained. ICP-MS test results show that the dry sediment obtained in the experiment condition with the relative centrifugal force is 100g (where g is the gravitational acceleration) and the number of rinses is 1. The content of heavy metals Cd and Ni that exceeds the original standard content has decreased significantly and meets the technical requirements for green metal planting soil heavy metal content level IV standards, removal rates are 46.6% and 20.9%, respectively; the content of other heavy metals that did not exceed the standard also decreased significantly. The method in this paper has many advantages include of good removal efficiency, no secondary pollution, especially new pollutions couldn't be introduced or generated.","PeriodicalId":383266,"journal":{"name":"2021 4th International Symposium on Traffic Transportation and Civil Architecture (ISTTCA)","volume":"176 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123260598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of damage evolution in Beishan granite utilizing cluster tessellation model 基于簇镶嵌模型的北山花岗岩损伤演化研究

2021 4th International Symposium on Traffic Transportation and Civil Architecture (ISTTCA) Pub Date : 2021-11-12 DOI: 10.1109/ISTTCA53489.2021.9654738

Shirui Zhang, S. Qiu, Yong Huang

引用次数: 0

Route planning of aids to navigation inspection based on intelligent unmanned ship 基于智能无人船的助航检测航路规划

2021 4th International Symposium on Traffic Transportation and Civil Architecture (ISTTCA) Pub Date : 2021-11-12 DOI: 10.1109/ISTTCA53489.2021.9654530

Yunhao Liang

引用次数: 1

Analysis on Overall-Carrying-Soil Effect of Shallow-buried Rectangular Pipe Jacking Construction 浅埋矩形顶管施工整体携土效应分析

2021 4th International Symposium on Traffic Transportation and Civil Architecture (ISTTCA) Pub Date : 2021-11-12 DOI: 10.1109/ISTTCA53489.2021.9654744

Jianwu Gong, Yao Shi, Yunqi Dong

{"title":"Analysis on Overall-Carrying-Soil Effect of Shallow-buried Rectangular Pipe Jacking Construction","authors":"Jianwu Gong, Yao Shi, Yunqi Dong","doi":"10.1109/ISTTCA53489.2021.9654744","DOIUrl":"https://doi.org/10.1109/ISTTCA53489.2021.9654744","url":null,"abstract":"With the construction of urban comprehensive pipe gallery in full swing, the rectangular jacking pipe construction has gradually been widely used due to its high section utilization rate and slight impact on the surrounding environment. With the development of urban underground space, there will be more and more rectangular pipe jacking projects. For the shallow buried rectangular pipe jacking, the most critical problem is the overall-carrying-soil effect, which will adversely affect the project. Based on a shallow buried rectangular pipe jacking project, the numerical simulation of the pipe jacking construction process is performed using finite element method to analyze the overall-carrying-soil effect of surrounding soil during the construction of pipe jacking. The simulation results show that (1) The maximum of the overall-carrying-soil effect caused by the shallow buried rectangular pipe jacking construction is above the pipeline axis, and the range of the overall-carrying-soil effect increases with the pipe jacking construction; (2) During the construction of pipe jacking, the overall-carrying-soil effect of subsequent jacking pipe section is greater than that of the previous jacking pipe section.","PeriodicalId":383266,"journal":{"name":"2021 4th International Symposium on Traffic Transportation and Civil Architecture (ISTTCA)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132472102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Regression Model for Level-1/2 Maintenance Plan of China Railway High-speed Electric Motor Unit 中国铁路高速电机机组1/2级检修计划的回归模型

2021 4th International Symposium on Traffic Transportation and Civil Architecture (ISTTCA) Pub Date : 2021-11-12 DOI: 10.1109/ISTTCA53489.2021.9654722

Zhongkai Wang, Weijiao Zhang, Zhikai Jia, Hui Wang

{"title":"Regression Model for Level-1/2 Maintenance Plan of China Railway High-speed Electric Motor Unit","authors":"Zhongkai Wang, Weijiao Zhang, Zhikai Jia, Hui Wang","doi":"10.1109/ISTTCA53489.2021.9654722","DOIUrl":"https://doi.org/10.1109/ISTTCA53489.2021.9654722","url":null,"abstract":"The total operation mileage of China High-Speed railway network is more than 30 thousand kilometers, and over 3600 High-Speed Electric Motor Unit (EMU) carry out the operation, making China the largest High-Speed railway network all over the world. It benefits a lot to improve the operation efficiency and reduce the maintenance cost of High-Speed railway by scientifically planning the daily operation and repair process of EMUs. Taking the specific EMU depot as the research object, this paper proposed a regression model which includes two steps to estimate the Level-1/2 maintenance plan of EMUs. In the first step, the influence factors of average daily running mileage of EMUs are analyzed, and a multiple regression model with the EMU routing, allocated number of EMUs to the depot, on-line rate, and average fault rate as the independent variables was built to forecast the average daily running mileage. Based on the average daily running mileage of each EMUs as input, the second step constructed an optimized model with the minimum maintenance cycle waste mileage as the objective function to equalize the maintenance expiration time between multiple EMUs. To solve the optimization model, particle swarm optimization was applied to obtain the best solution. Finally, this paper predicted the repair plan of EMUs of the depot instance in the year 2021.","PeriodicalId":383266,"journal":{"name":"2021 4th International Symposium on Traffic Transportation and Civil Architecture (ISTTCA)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131127651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of flame retardant on the performance of asphalt and asphalt mixture 阻燃剂对沥青及沥青混合料性能的影响

2021 4th International Symposium on Traffic Transportation and Civil Architecture (ISTTCA) Pub Date : 2021-11-12 DOI: 10.1109/ISTTCA53489.2021.9654505

Hongjun Li, Junjie Wang

{"title":"Effect of flame retardant on the performance of asphalt and asphalt mixture","authors":"Hongjun Li, Junjie Wang","doi":"10.1109/ISTTCA53489.2021.9654505","DOIUrl":"https://doi.org/10.1109/ISTTCA53489.2021.9654505","url":null,"abstract":"Asphalt is a combustible material. To prevent fire and other major accidents, it is necessary to add flame retardant to the long tunnel asphalt pavement. However, there are many kinds of flame retardants in the market, and the effect of adding flame retardants to asphalt pavement on its performance remains to be studied. The effects of two different flame retardants on the properties of asphalt and asphalt mixture were studied. The results showed that the two flame retardants could improve the softening point, rut factor and limit oxygen index of asphalt. What's more, the ductility and the anti-fatigue performance of asphalt would be reduced by the flame retardants. Along with the addition of flame retardant, the high-temperature stability of asphalt mixture was improved, while the low-temperature crack resistance and water stability were decreased. FR-4 flame retardant has a greater influence on the high-temperature performance of asphalt and asphalt mixture, but the low-temperature performance will be significantly reduced. And the improvement of flame retardant performance is not as good as that of flame retardant ZL-1.","PeriodicalId":383266,"journal":{"name":"2021 4th International Symposium on Traffic Transportation and Civil Architecture (ISTTCA)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126900029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1