2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR)最新文献_第4页

Design and construction control of single tower cable-stayed bridge without backstays 无后撑杆单塔斜拉桥的设计与施工控制

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/ICHCESWIDR54323.2021.9656362

Haikuan Liu, Pinde Yu, F. Hu, Xuetong Li

引用次数: 0

Preparation and properties of bendable concrete for bridge-deck link slabs 桥面连接板可弯混凝土的制备及性能研究

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/ICHCESWIDR54323.2021.9656306

Jx Li, S. Lin, Cj Yang, Ln Liu, B. Chen, Xf Wang, Y. Bai, F. Zhang, Fw Ning, Ll Lv

引用次数: 1

Influence of unsupported length on underground cavity stability in sandstone stratum with weak interlayer 弱夹层砂岩地层无支撑长度对地下洞室稳定性的影响

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/ICHCESWIDR54323.2021.9656209

Chenyang Zhao, Qiang Zhang, Ming-feng Lei, Yintao Song, Guodong Liang, C. Jia

{"title":"Influence of unsupported length on underground cavity stability in sandstone stratum with weak interlayer","authors":"Chenyang Zhao, Qiang Zhang, Ming-feng Lei, Yintao Song, Guodong Liang, C. Jia","doi":"10.1109/ICHCESWIDR54323.2021.9656209","DOIUrl":"https://doi.org/10.1109/ICHCESWIDR54323.2021.9656209","url":null,"abstract":"The unsupported length has great influence on the stability of an underground cavity when constructing it in sandstone stratum with weak interlayer. To provide guidance for safe construction, the physical and mechanical parameters of sandstone are tested first, and then a numerical model considering the weak interlayer is established by using 3DEC to analyze the influence of unsupported length. It is found that the strength of slightly weathered sandstone with medium coarse grain is in the range of 59.5-116MPa, and the saturated compressive strength will reduce greatly. When there is little difference in the internal mineral composition, the strength reduction of rock sample shows a positive correlation with water absorption, while the elastic modulus and the Poisson’s ratio are less affected by it. Meanwhile, the tensile strength is about 1.25% of its compressive strength. The unsupported length has an impact on the disturbed zone of surrounding rock mass. The shorter unsupported length can reduce the deformation of surrounding rock mass, and the reasonable excavation footage should not be greater than 6m. The stress of bolt below the rock anchoring beam is great although the unsupported length has little impact on the stress change of bolt at this position. One thing should be point out is that the bolt stress at the weak interlayer is obviously greater than that in the vault, and the strength of support here should be strengthened.","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":"116984056","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

Study on Arrangement of Advance Heading for Extra-long Double-barrel Single-track Tunnel 超长双筒单轨隧道超前掘进布置研究

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/ICHCESWIDR54323.2021.9656364

Xiaohan Chen

{"title":"Study on Arrangement of Advance Heading for Extra-long Double-barrel Single-track Tunnel","authors":"Xiaohan Chen","doi":"10.1109/ICHCESWIDR54323.2021.9656364","DOIUrl":"https://doi.org/10.1109/ICHCESWIDR54323.2021.9656364","url":null,"abstract":"The position of advance heading directly affects the difficulty of opening cross adits, the degree of secondary disturbance to the rocks caused by drilling and blasting, and the volume of construction ventilation and drainage. In this paper, the construction plan of \"advance heading (for later enlargement)\" of the extra-long double-barrel single-track tunnel is taken as the background, and the position of advance heading and the effect of controlling rock deformation by heading is emphatically studied. According to the study results, it is suggested that the heading should be located at the middle lower section of the tunnel. First, it is beneficial to set up the cross adits to assist the tunnel excavation for Track I. Second, it can be used as the construction drainage and ventilation channel to reduce the length of the counter-slope drainage section and lower the ventilation and drainage volumes during construction. At the same time, advance heading has unloading effect, and the effect of controlling the rock deformation of the tunnel is remarkable.","PeriodicalId":425834,"journal":{"name":"2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR)","volume":"17 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":"117024174","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

Distribution and effectiveness of soil and water conservation monitoring about Water Conservancy Project 水利工程水土保持监测的分布与效果

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/ICHCESWIDR54323.2021.9656375

H. Zhang, Deqiang Han, Yideng Chang, Zhenzhou Shen, Wei Gu, Liao Kai, Xuechun Cao, L. Cao, Binbin Li, Jianzhao Xu, Qiang Yi, Hongying Li, Yuqing Yang, Liting Hou, Chengliang L. Chen, Haibin Zhao

{"title":"Distribution and effectiveness of soil and water conservation monitoring about Water Conservancy Project","authors":"H. Zhang, Deqiang Han, Yideng Chang, Zhenzhou Shen, Wei Gu, Liao Kai, Xuechun Cao, L. Cao, Binbin Li, Jianzhao Xu, Qiang Yi, Hongying Li, Yuqing Yang, Liting Hou, Chengliang L. Chen, Haibin Zhao","doi":"10.1109/ICHCESWIDR54323.2021.9656375","DOIUrl":"https://doi.org/10.1109/ICHCESWIDR54323.2021.9656375","url":null,"abstract":"Xinjiang Kurgan Water Conservancy Project Construction Administration in order to implement the water and soil conservation plan, strengthen the design and construction management of water and soil conservation, optimize the prevention and control measures of water and soil loss, and coordinate the progress of the water and soil conservation project and the construction of the main project; timely and accurately grasp the project soil erosion status and prevention effect, put forward soil and water conservation improvement measures, reduce man-made soil and water loss; to find out major soil erosion hazards in time and put forward countermeasures and suggestions on soil erosion prevention and control; to provide the technical basis of water and soil conservation supervision and management and the basic information of public supervision, to promote the effective protection and timely recovery of the ecological environment in the project area, Yellow River Institute of Hydraulic Research was specially entrusted to carry out the water and soil conservation monitoring work of the project.","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":"117026671","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

Low temperature load limitation of long Span Concrete truss composite arch Bridge 大跨度混凝土桁架组合拱桥低温荷载限制

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/ICHCESWIDR54323.2021.9656192

K. Niu, Yanwei Niu, Junhua Zheng

{"title":"Low temperature load limitation of long Span Concrete truss composite arch Bridge","authors":"K. Niu, Yanwei Niu, Junhua Zheng","doi":"10.1109/ICHCESWIDR54323.2021.9656192","DOIUrl":"https://doi.org/10.1109/ICHCESWIDR54323.2021.9656192","url":null,"abstract":"In order to study the load limiting method of long-span concrete truss composite arch bridge at low temperature, the finite element analysis of the operating force of a 138m truss composite arch bridge at low temperature was firstly carried out, including the deflection change and stress distribution caused by temperature. Secondly, the load characteristics of trucks on the bridge are analyzed and the lower limit load is analyzed based on WIM data. Finally, the analysis results show that the long-term deformation of the truss composite arch bridge under the action of temperature is m-shaped, and the structure has a large tensile stress at the junction of empty and solid sides in the middle of span and at the lower chord position at the double columns. This kind of bridge is very sensitive to the effect of temperature. The influence of vehicle load on the structure under low temperature should be paid attention to and the relevant load limiting method is proposed to provide reference for this kind of bridge.","PeriodicalId":425834,"journal":{"name":"2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR)","volume":"112 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":"117045783","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

Evaluation of the particle size distribution of on-site rockfill using mask R-CNN deep learning model 基于掩模R-CNN深度学习模型的现场堆石料粒径分布评价

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/ICHCESWIDR54323.2021.9656248

Liqun Fu, Xiaorong Xu, Feng Jin, Hu Zhou

引用次数: 2

Parametric Analysis of Friction Pendulum System Inter-Story Isolation Structure Based on Benchmark Model 基于基准模型的摩擦摆系统层间隔震结构参数分析

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/ICHCESWIDR54323.2021.9656412

Cunkun Duan

{"title":"Parametric Analysis of Friction Pendulum System Inter-Story Isolation Structure Based on Benchmark Model","authors":"Cunkun Duan","doi":"10.1109/ICHCESWIDR54323.2021.9656412","DOIUrl":"https://doi.org/10.1109/ICHCESWIDR54323.2021.9656412","url":null,"abstract":"Given the limitation that the base isolation technology is easy to overturn and collapse in the application of high-rise structures, and at present, high-rise structures also need an isolation control system that can effectively control the structural response under earthquake to reduce seismic damage. Combined with the advantages of friction pendulum system (FPS) and inter-story isolation technology, the friction pendulum system inter-story isolation technology is proposed and applied to high-rise structures. Based on the 20-story benchmark model, the parametric analysis of the friction pendulum system inter-story isolation structure is carried out. Firstly, based on the theoretical model of friction pendulum system, the structural motion equation of friction pendulum system inter-story isolation structure is proposed and the simulation model of the system is established by MATLAB/Simulink. The effects of slideway radius, friction coefficient, and structural damping ratio on the objective function are studied. The results show that the energy consumption ratio of friction pendulum system decreases with the decrease of mass ratio of superstructure to lower structure. The change of top floor acceleration tends to be smaller at both ends and larger in the middle with the increase of mass ratio. The slideway radius does not affect the frictional energy consumption of the friction pendulum system and the base shear ratio of the structure. With the decrease of damping ratio and friction coefficient, the energy consumption of the structure itself increases.","PeriodicalId":425834,"journal":{"name":"2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR)","volume":"343 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":"116797390","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

Investigations into Temporal Variation Characteristics of Near-shore Waves 近岸波时间变化特征的研究

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/ICHCESWIDR54323.2021.9656281

Lizhe Liu, Hexu Wang, Haokai Yang, Yaqi Wang, L. Ren, M. Hartnett

引用次数: 0

Research progress on coupling effect of multi-ion ionic attack of concrete in the coastal area 沿海地区混凝土多离子侵蚀耦合效应研究进展

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/ICHCESWIDR54323.2021.9656481

Tao Liang, Guolong Qiao, Daimao Li, Andian Lu, Jikai Zhou

{"title":"Research progress on coupling effect of multi-ion ionic attack of concrete in the coastal area","authors":"Tao Liang, Guolong Qiao, Daimao Li, Andian Lu, Jikai Zhou","doi":"10.1109/ICHCESWIDR54323.2021.9656481","DOIUrl":"https://doi.org/10.1109/ICHCESWIDR54323.2021.9656481","url":null,"abstract":"The corrosion on concrete from seawater has an ion coupling effect. This paper analyzed the results of two species ionic coupling attack, three species ionic coupling attack, and seawater attack, which obtained the following results: (1) The internal pores will be blocked by the attack products of $mathrm{SO}_{4}^{2-}$ and Mg2+ in the early stage, which inhibits the transportation of $mathrm{C}1^{-}$; the degradation of concrete will increase the transport speed of $mathrm{C}1^{-}$. (2) Sulfate attack is influenced by cation type. Taking expansion rate as deterioration index, Na2So4 and K2SO4 have the highest attack speed and degree, while CaSO4 has the lowest attack degree. Taking compressive strength as the deterioration index, the attack degree of MgSO4 is the highest, and that of Na2SO4 and K2SO4 is the lowest. (3) Temperature will affect the deterioration degree of concrete, and the deterioration degree of concrete is more severe at low temperatures. $mathrm{CO}_{3}^{2-}$ and $mathrm{C}1^{-}$ will aggravate the MgSO4 attack at low temperature $(5^{circ}mathrm{C})$ but not affect the MgSO4 attack at room temperature. (4) Due to the different transport rates of ions in concrete, the surface layer of concrete is divided into Mgrich zone, S-rich zone, and Cl-rich zone according to the rich elements.","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":"129539001","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