2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR)最新文献_第8页

Anti-overturning analysis of in-situ jacking foundation for 500KV high voltage transmission tower 500KV高压输电塔原位顶进基础抗倾覆分析

2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR) Pub Date : 2021-11-06 DOI: 10.1109/ICHCESWIDR54323.2021.9656365

Tao Zhang, Yangsheng Zhang, Kong-liang Chen

{"title":"Anti-overturning analysis of in-situ jacking foundation for 500KV high voltage transmission tower","authors":"Tao Zhang, Yangsheng Zhang, Kong-liang Chen","doi":"10.1109/ICHCESWIDR54323.2021.9656365","DOIUrl":"https://doi.org/10.1109/ICHCESWIDR54323.2021.9656365","url":null,"abstract":"Taking the 500 kV double-circuit transmission line jacking project as the background, aiming at the overturning phenomenon that may occur in the foundation of the high-voltage transmission tower jacking process, the finite element software is used to establish a three-tower six-line tower-line coupling system calculation model, considering the wires Numerical analysis of wind load response, self-weight effect of transmission tower, and tower-line coupling tension. The research results show that the y-direction bending moment value of each independent foundation will be significantly changed after the jacking, and the y-direction bending moment value of the sole base No. 2 will have a greater increase. In addition, the y-direction bending moment values of the upper and lower connecting beams cast in-situ after the transmission tower is lifted will suddenly increase, indicating that when the high-voltage transmission tower is lifted in situ, each foundation must be strengthened to avoid longitudinal restraints at the bottom of the foundation. Sudden instability of bending moment.","PeriodicalId":425834,"journal":{"name":"2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128639500","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

Strength test of steel slag powder - ground granulated blast-furnace slag powder - fly ash - cement solidified soft soil 钢渣粉-磨粒高炉渣粉-粉煤灰-水泥固化软土强度试验

2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR) Pub Date : 2021-11-06 DOI: 10.1109/ICHCESWIDR54323.2021.9656200

Xuying Wang, Jianye Zhao, Lung-Chuang Wang, Qingjuan Meng, Qiang Li, Yuimin Xu

引用次数: 0

Research on Susceptibility Evaluation of Geological Hazards in Changyang County Based on Information Method 基于信息方法的长阳县地质灾害易感性评价研究

2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR) Pub Date : 2021-11-06 DOI: 10.1109/ICHCESWIDR54323.2021.9656484

Mengsheng Yang, Mao Ye, Yi-dong Yu, Jianjun Wang, Qiang Liu, Zhiwen Zheng

{"title":"Research on Susceptibility Evaluation of Geological Hazards in Changyang County Based on Information Method","authors":"Mengsheng Yang, Mao Ye, Yi-dong Yu, Jianjun Wang, Qiang Liu, Zhiwen Zheng","doi":"10.1109/ICHCESWIDR54323.2021.9656484","DOIUrl":"https://doi.org/10.1109/ICHCESWIDR54323.2021.9656484","url":null,"abstract":"With the gradual intensification of human engineering activities in Chinese mountainous and hilly areas in recent years, coupled with frequent occurrence of extreme weather, geological hazards are aggravated, posing a huge threat to the safety of people’s lives and properties. How to perform more accurate division of hazard-prone areas and guide local government in disaster prevention and alleviation is of vital importance. Research on susceptibility evaluation of geological hazards in Changyang County is carried out in this paper based on information method. The research findings show that high and extremely high-prone areas in the region are mainly distributed along the banks of Qingjiang River in Changyang County and the area of Geheyan Reservoir, while the medium and low-prone areas are mainly distributed in the surrounding areas of Ziqiu Town and Yazikou Township. The research results are able to guide the local government in disaster prevention and mitigation to some extent.","PeriodicalId":425834,"journal":{"name":"2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130593463","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

Study on carbonation resistance of EPS concrete based on mix proportion design 基于配合比设计的EPS混凝土抗碳化性能研究

2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR) Pub Date : 2021-11-06 DOI: 10.1109/ICHCESWIDR54323.2021.9656423

Ji Yuan, Weilong Li, Linbing Wang, Jianjun Wang, Hailu Yang, Wenhua Zhang

引用次数: 1

Study on mechanical response and disturbance control of shield underpass pre-reinforcement soil 盾构地下通道预加固土的力学响应及扰动控制研究

2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR) Pub Date : 2021-11-06 DOI: 10.1109/ICHCESWIDR54323.2021.9656347

Lin Xi, Yu Yang, Shuai Tao

引用次数: 0

Study on Vibration under the Water Pulsation of the High Head Pumped Storage Power Plant 高水头抽水蓄能电站水脉动下的振动研究

2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR) Pub Date : 2021-11-06 DOI: 10.1109/ICHCESWIDR54323.2021.9656340

Baisong Nie, Dechang Guo, Qifeng Zheng, Wen-ke Xu

{"title":"Study on Vibration under the Water Pulsation of the High Head Pumped Storage Power Plant","authors":"Baisong Nie, Dechang Guo, Qifeng Zheng, Wen-ke Xu","doi":"10.1109/ICHCESWIDR54323.2021.9656340","DOIUrl":"https://doi.org/10.1109/ICHCESWIDR54323.2021.9656340","url":null,"abstract":"The pump turbine of the pumped storage power station has the characteristics of high head, large capacity, high unit speed, two-way flow operation and frequent condition change, which leads to the prominent vibration problem. The rated head of a pumped storage power station is 710m, and the underground powerhouse is equipped with two kinds of pump turbines with different speeds (the rated speeds are 500r / min and 600r / min respectively). The rated head and the rated speed of 600r/min are the highest in domestic pumped storage power stations. In order to study the vibration characteristics of the power house structure under the action of water pressure pulsation of high head and high speed unit, the finite element dynamic time history method was used to study the vibration response of the power house under the assumption of harmonic load. The results show that the larger the amplitude of pressure pulsation is, the larger the vibration is. Under each working condition, the vibration response of stairs and turbine floor is relatively large, which is the weak part of the powerhouse structure. Under all working conditions, the vibration responses of the typical structures of 5# unit section do not exceed the allowable vibration standards of building structures specified in various codes. However, under case 1 and 4, the root mean square vibration accelerations of several parts of 5# unit section are relatively large, which exceed the safety standard (1.0 m/s2), but will not cause structural damage (< 10 m/s2). Although the frequency weighting RMS acceleration does not exceed the limit, obvious vibration and noise may appear due to the high vibration frequency, which should be paid attention to.","PeriodicalId":425834,"journal":{"name":"2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR)","volume":"05 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127138115","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

Research on excavation supporting measures for the dome of giant cylindrical surge chamber 巨型圆柱形调压室穹顶开挖支护措施研究

2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR) Pub Date : 2021-11-06 DOI: 10.1109/ICHCESWIDR54323.2021.9656435

Jing Hou, Jun Chen, Yimin Chen, Guotao Meng, Fei Yang, Shaohu Ni, Jiangbo Meng

{"title":"Research on excavation supporting measures for the dome of giant cylindrical surge chamber","authors":"Jing Hou, Jun Chen, Yimin Chen, Guotao Meng, Fei Yang, Shaohu Ni, Jiangbo Meng","doi":"10.1109/ICHCESWIDR54323.2021.9656435","DOIUrl":"https://doi.org/10.1109/ICHCESWIDR54323.2021.9656435","url":null,"abstract":"The excavation and support of large underground caverns in a complex geological environment have brought great challenges to engineering design. The tailwater surge chamber of Baihetan Hydropower Station is a huge project with a maximum excavation diameter of 48 m. Geological factors including high stress, interlayer dislocation zone, and columnar joints impact the cavern's stability, making construction difficult. To investigate the cylindrical surge chamber dome's excavation and support technologies, as well as the stability of the surrounding rock, multiple methods have been applied, including empirical analogy, numerical calculation and field investigation. An excavation and support scheme of “high layered partition, horizontal sector partition, top-down, from inside to outside, area by area excavation and layer by layer support” has been proposed. The anchor observation tunnel in the shape of a “Wang” was innovatively designed. By presetting the new supporting structure of the anti-hanging dome through the anchor cable, the advanced implementation and monitoring of the support of the huge dome system have been accomplished. The research results are helpful to guide and optimize the subsequent excavation and support design of the cavern construction.","PeriodicalId":425834,"journal":{"name":"2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127215989","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

Study on Interference Phenomenon of Coarse Aggregate in Dense Graded Asphalt Mixture 密级配沥青混合料中粗集料的干涉现象研究

2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR) Pub Date : 2021-11-06 DOI: 10.1109/ICHCESWIDR54323.2021.9656236

Xiaoliang Chen, Jianfei Zhang, Xin Wang, Hui Guo, Yongqiang Zhu, Yidong Xu

{"title":"Study on Interference Phenomenon of Coarse Aggregate in Dense Graded Asphalt Mixture","authors":"Xiaoliang Chen, Jianfei Zhang, Xin Wang, Hui Guo, Yongqiang Zhu, Yidong Xu","doi":"10.1109/ICHCESWIDR54323.2021.9656236","DOIUrl":"https://doi.org/10.1109/ICHCESWIDR54323.2021.9656236","url":null,"abstract":"In order to quantitatively study the interference phenomenon of asphalt mixture coarse aggregate in the compaction process, the digital image technology was used to detect the mixture slice. The interference coefficient of coarse aggregate of asphalt mixture was proposed as the quantitative index of interference phenomenon. The results show that from initial compaction to final compaction, The interference coefficient of 2.36mm $sim$ 4.75mm and 4.75mm $sim$ 9.5mm coarse aggregate decreases significantly, and the interference degree of each grade of coarse aggregate increases significantly. The interference degree of coarse aggregate at the bottom of the specimen is greater than that at the top of the specimen, but the difference of interference degree at each vertical position decreases with the progress of compaction. The change of coarse aggregate interference degree is mainly concentrated in the early and middle stages of compaction, and the increase of interference in AC-13C and SMA-13 decreases by 68.8% and 82.2% respectively in the middle and late stage.","PeriodicalId":425834,"journal":{"name":"2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125326298","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

Analysis of one-dimensional rheological consolidation of saturated clay under intermittent cyclic loading with fractional derivative Merchant model 用分数阶导数Merchant模型分析饱和黏土在间歇循环荷载下的一维流变固结

2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR) Pub Date : 2021-11-06 DOI: 10.1109/ICHCESWIDR54323.2021.9656374

Yufei Sun, Mingxia Zhang, Yimiao Lu, Jinbao Wang

{"title":"Analysis of one-dimensional rheological consolidation of saturated clay under intermittent cyclic loading with fractional derivative Merchant model","authors":"Yufei Sun, Mingxia Zhang, Yimiao Lu, Jinbao Wang","doi":"10.1109/ICHCESWIDR54323.2021.9656374","DOIUrl":"https://doi.org/10.1109/ICHCESWIDR54323.2021.9656374","url":null,"abstract":"Soft soil foundation is often subjected to periodic vibration and intermittent action during traffic loading. To investigate the consolidation characteristics of saturated clay under traffic loading, one-dimensional rheological consolidation equation is established based on the fractional derivative Merchant (FDMM) rheological model and intermittent cyclic loading, and the finite difference method is used to solve the equation. Then, the influences of different mechanical parameters on the rheological consolidation of saturated clay are investigated. It shows that during the intermittent period the smaller the fractional order $alpha$ is, the greater the soil rebound is. The loading number N in a single cycle affects the peak of consolidation degree. The smaller N is, the higher the peak consolidation degree is. The intermittent ratio W has a great influence on the consolidation, and the soil rebound is positively correlated with W The research results will be the good reference for understanding the consolidation characteristics of saturated clay under intermittent cyclic loading.","PeriodicalId":425834,"journal":{"name":"2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126824081","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

Seismic ground motion parameters for automatic seismic trip system of nuclear power plants 核电站地震自动跳闸系统的地震动参数

2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR) Pub Date : 2021-11-06 DOI: 10.1109/ICHCESWIDR54323.2021.9656386

Liang Li, Luotao Wen, Rong Pan, Lin Gui, Kebin Fan

引用次数: 0