2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR)最新文献_第9页

Deep learning based methods for water body extraction and flooding evolution analysis based on sentinel-1 images 基于sentinel-1图像的深度学习水体提取与洪水演化分析方法

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/ICHCESWIDR54323.2021.9656266

Zhixin Zhang, Dan Liu, Zhe Liu, Yanjun Qiao, Changan Zheng, Yong Gan

引用次数: 0

Machine learning-based algorithm for predicting the groundwater level in Minqin Oasis region of China 民勤绿洲地下水位预测的机器学习算法

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/ICHCESWIDR54323.2021.9656310

Shun-Po Yu, Liuchao Qiu, Xiaorong Xu, Yong-Sen Yang

引用次数: 2

Bridge tower modeling based on 3D experience platform 基于三维体验平台的桥塔建模

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/ICHCESWIDR54323.2021.9656196

YiBoChen

引用次数: 0

Time-variant seismic reliability analysis of slopes with combined uncertainties based on probability density evolution method 基于概率密度演化法的组合不确定性边坡时变地震可靠度分析

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/ICHCESWIDR54323.2021.9656212

Hongqiang Hu, Gang Gan

{"title":"Time-variant seismic reliability analysis of slopes with combined uncertainties based on probability density evolution method","authors":"Hongqiang Hu, Gang Gan","doi":"10.1109/ICHCESWIDR54323.2021.9656212","DOIUrl":"https://doi.org/10.1109/ICHCESWIDR54323.2021.9656212","url":null,"abstract":"Time-variant reliability are gaining much more popularity in geotechnical engineering due to the fact that the internal geotechnical parameters are change with the time and the external environmental excitation are random processes, which is of great significance in the service-life assessment, resilience-based assessment and intelligent disaster reduction. Considering that most existing studies of time-variant reliability analysis of slopes concentrated on the static conditions, which have neglected the time-varying behaviour of intensity and frequency of input seismic loading, the present study proposed an efficient probabilistic method for the time-variant reliability analysis of slope under the seismic loading, in which the combined uncertainties of spatially variable soil properties and the randomness of seismic loading are simultaneously considered. The time-dependent behaviour of seismic performance of slope under the no-stationary stochastic processes of seismic loading is revealed. The time-variant seismic reliability results and the probability density function of dynamic failure time are calculated by the proposed method. The results from the various intensities of input seismic loading, seismic performance criteria, seismic performance indexes and uncertainties are also compared in our study to illustrate the effect of different factors on the time-variant seismic reliability of slopes.","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":"130442328","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

Comparative study on calculation methods of stress in different sections of gravity dam 重力坝不同断面应力计算方法的比较研究

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/ICHCESWIDR54323.2021.9656233

Hui Yu, C. Su, Linna Zheng, Lili Zhu

{"title":"Comparative study on calculation methods of stress in different sections of gravity dam","authors":"Hui Yu, C. Su, Linna Zheng, Lili Zhu","doi":"10.1109/ICHCESWIDR54323.2021.9656233","DOIUrl":"https://doi.org/10.1109/ICHCESWIDR54323.2021.9656233","url":null,"abstract":"In order to compare the difference between dam sections at different locations and different calculation models, this paper uses the material mechanics method, finite element independent dam section model and overall foundation model to compare different dam sections of gravity dams. The results show that for the riverbed dam section with a gentle foundation, the calculation results of the three methods are similar, and the vertical compressive stress difference at the heel of the dam is within 0.18 MPa. For the bank slope dam section, the calculation error of the material mechanics is relatively large. The vertical compressive stress at the heel of the dam is smaller than the result of the finite element method and can reach 4.67 MPa. The overall foundation model of the bank slope dam section has a larger tensile stress area, and the stress value increases up to 2.61 MPa. The vertical stress of the foundation surface of the bank slope dam section of the independent dam section model is the compressive stress, while the overall foundation model has tensile stress.","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":"130489784","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 the Stress and the Deformation Characteristics of the Initial Support of the Large Section deeply buried in the sandy loess tunnel 沙质黄土隧道深埋大断面初始支护应力及变形特征分析

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/ICHCESWIDR54323.2021.9656188

Shuiqing Huang, Jinghe Wang, Xu Wang, H. Xu

{"title":"Analysis of the Stress and the Deformation Characteristics of the Initial Support of the Large Section deeply buried in the sandy loess tunnel","authors":"Shuiqing Huang, Jinghe Wang, Xu Wang, H. Xu","doi":"10.1109/ICHCESWIDR54323.2021.9656188","DOIUrl":"https://doi.org/10.1109/ICHCESWIDR54323.2021.9656188","url":null,"abstract":"To explore the stress and deformation characteristics of a large section that deeply buried in the sandy loess tunnel structure, numerical simulation and field test analysis were carried out and the initial support structure of sandy loess tunnel was studied based on the Panxian Mountain Tunnel Project in Zhonglankezhuan. With field sand loess physical parameter and mechanical properties, a series of numerical simulation of complex was calculated, the scene actual situation was highly restored, and the steel arch bending moment, axial force and the tunnel vault settlement were calculated. Then, the stress characteristics of the initial support of the tunnel are analyzed by using the time-varying curve and the distribution nephogram in the final state. At the same time, according to the field monitoring steel arch strain, its stress characteristics were analyzed. The stress was then converted into internal force from material mechanics that verify the reliability of the numerical simulation results. The research can provide some help for the subsequent researches and construction of sandy loess tunnel, with a certain reference significance.","PeriodicalId":425834,"journal":{"name":"2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR)","volume":"37 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":"116797661","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 on FRP Strengthening of Cracked Steel Plates Considering Bonding Effect in Cracks 考虑裂纹粘结效应的玻璃钢加固裂缝钢板分析

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/ICHCESWIDR54323.2021.9656258

Zhi-an Jiao, J. Wei, Y. Bao, Yang Guo

{"title":"Analysis on FRP Strengthening of Cracked Steel Plates Considering Bonding Effect in Cracks","authors":"Zhi-an Jiao, J. Wei, Y. Bao, Yang Guo","doi":"10.1109/ICHCESWIDR54323.2021.9656258","DOIUrl":"https://doi.org/10.1109/ICHCESWIDR54323.2021.9656258","url":null,"abstract":"When Fiber Reinforced Polymer/Plastic (FRPs) are used to repair cracked steel plates, the bonding materials will be inevitably trapped into cracks. This phenomenon, however, has not been considered in the current theoretical analyses of most scholars. In this paper, a bridging force model was introduced to simulate the bonding materials between upper and lower surfaces of cracks. A finite element model was established for single-surface repairing of cracked steel plates, and the results were compared with the finite element calculation results without considering the bonding effect of binders inside cracks. Besides, the impact of bonding materials inside cracks upon FRP repairing of cracked steel plates was quantified. Results revealed that, in the case of short cracks, the error between two finite element calculations was slight; when the cracks were longer than 40 mm, the difference between calculated stress intensity factors (SIF), crack expansion displacements, and maximum out-of-plane displacements of steel plates were 20.61%, 77.14%, and 35.73% respectively; and the impact of bonding materials in the crack surfaces upon cracked steel plates cannot be ignored.","PeriodicalId":425834,"journal":{"name":"2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR)","volume":"46 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":"117024361","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

Influence of floor layout on seismic performance of Frame-shear wall structure 楼板布置对框架-剪力墙结构抗震性能的影响

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/ICHCESWIDR54323.2021.9656355

Yunxuan Chen, Yongsheng Zhang

{"title":"Influence of floor layout on seismic performance of Frame-shear wall structure","authors":"Yunxuan Chen, Yongsheng Zhang","doi":"10.1109/ICHCESWIDR54323.2021.9656355","DOIUrl":"https://doi.org/10.1109/ICHCESWIDR54323.2021.9656355","url":null,"abstract":"In order to study the influence of floor layout on the seismic performance of high-rise frame shear wall structure, taking the 12 storey reinforced concrete frame shear wall structure as an example, the calculation model is established by using ANSYS finite element software, and the structure under the action of earthquake is calculated and analyzed. The modal characteristics, natural frequency and maximum displacement, inter-story displacement angle and Mises equivalent stress distribution law of the structure under different floor layout schemes are obtained. The results show that the layout of 150mm-thick floor slabs for 1-6 floors and 120mm-thick floor slabs for 712 floors is the most beneficial to the overall lateral stiffness of the structure. The most dangerous section of the structure under the action of an earthquake is located at the bottom of the underlying shear wall. The calculations are carried out in accordance with the current concrete structure design code GBJ50010-2010 and the building seismic design code GB50011-2010.","PeriodicalId":425834,"journal":{"name":"2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR)","volume":"27 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":"131466981","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

Continuously monitoring the early hydration process of cement paste at elevated temperatures by a developed non-contact resistivity measurement apparatus 利用研制的非接触电阻率测定仪对高温下水泥浆体的早期水化过程进行连续监测

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/ICHCESWIDR54323.2021.9656229

Yueyi Gao, Wenhua Zhang

{"title":"Continuously monitoring the early hydration process of cement paste at elevated temperatures by a developed non-contact resistivity measurement apparatus","authors":"Yueyi Gao, Wenhua Zhang","doi":"10.1109/ICHCESWIDR54323.2021.9656229","DOIUrl":"https://doi.org/10.1109/ICHCESWIDR54323.2021.9656229","url":null,"abstract":"The early hydration process of cementitious material at elevated temperatures was studied by a specially developed non-contact resistivity measurement apparatus (NCRMA). By using NCRMA, the relationship between elevated curing temperature (20, 40, 60, and 90°C) and the early hydration process of cement paste with low water-binder (w/b) ratio was found. Results indicate that the early hydration process of low w/b cement pastes cured in 60 and 90°C consists five stages: the dissolving stage, competition stage, acceleration stage, the transformation of AFt to AFm stage, and steady hardening stage. However, the transformation of AFt to AFm stage was not found in the condition of 20 and 40°C. Besides, the increase in curing temperature leads to a short duration of the dissolution stage and a decrease of ultimate electrical resistivity value. In addition, in the range of 20 to 40°C, with the increasing of curing temperature, the duration of the competition stage decreases. However, this situation is reversed when the curing temperature is between 40 and 90°C. It is suggested that the hydration process is retarded at a higher temperature.","PeriodicalId":425834,"journal":{"name":"2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR)","volume":"41 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":"132864154","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

Experimental study on ultimate bearing capacity of BFRP reinforced fiber shotcrete flexural members BFRP增强纤维喷射混凝土受弯构件极限承载力试验研究

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/ICHCESWIDR54323.2021.9656309

Jikai Zhou, L. Fu, Guolong Qiao, Yating Tai, Meng Zhang

{"title":"Experimental study on ultimate bearing capacity of BFRP reinforced fiber shotcrete flexural members","authors":"Jikai Zhou, L. Fu, Guolong Qiao, Yating Tai, Meng Zhang","doi":"10.1109/ICHCESWIDR54323.2021.9656309","DOIUrl":"https://doi.org/10.1109/ICHCESWIDR54323.2021.9656309","url":null,"abstract":"The water conveyance tunnel is an important structural form in the allocation of water resources. The corrosion of the steel bars in the concrete lining makes it difficult to reach the required useful life. In order to solve the adverse effect of reinforcement corrosion on the durability of the concrete lining structure of water conveyance tunnel, BFRP reinforcement is proposed in shotcrete lining instead of steel reinforcement. In this paper, the ultimate bearing capacity of BFRP reinforced fiber shotcrete flexural members are studied through experiments. The results show that the flexural failure modes of BFRP reinforced fiber shotcrete flexural members can be divided into three types: under-reinforced, ideally reinforced and over-reinforced. Basalt fiber can ensure the integrity of beams in failure. The ultimate flexural bearing capacity of beams increases with the increment of BFRP reinforcement ratio. Under the same reinforcement ratio, the flexural ultimate bearing capacity of high content basalt fiber specimens is higher than that of low content basalt fiber specimens while the difference is small. In this paper, a calculation method of normal section bearing capacity of fiber shotcrete flexural members with BFRP reinforcement is proposed.","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":"132890232","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