2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR)最新文献_第3页

Probabilistic method of two-dimensional soil profile based on surface wave exploration 基于表面波探测的二维土壤剖面概率方法

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/ICHCESWIDR54323.2021.9656262

Shuo Zheng, Guan-ye Wu, Hui Zheng, Ning Liu

引用次数: 0

Research on Impacts of Rainfall on Free Flow and Non-Free Flow of Expressway 降雨对高速公路自由流动与非自由流动的影响研究

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/ICHCESWIDR54323.2021.9656439

Yuhong Yao, Jinliang Xu, Jinsong Ran, Zhenhua Sun

{"title":"Research on Impacts of Rainfall on Free Flow and Non-Free Flow of Expressway","authors":"Yuhong Yao, Jinliang Xu, Jinsong Ran, Zhenhua Sun","doi":"10.1109/ICHCESWIDR54323.2021.9656439","DOIUrl":"https://doi.org/10.1109/ICHCESWIDR54323.2021.9656439","url":null,"abstract":"Rainfall, as the most common adverse weather, has many bad effects on expressway traffic flow. At present, the research on the impacts of rainfall on expressway traffic flow mainly uses free flow speed, traffic capacity to characterize the degree of impacts. For free flow and non-free flow, whether the impact of rainfall is consistent is not clear. In order to explore the impact of rainfall on free flow and non-free flow of expressway, the traffic flow data under normal weather, light rain and moderate rain conditions were collected in Xi’an Ring Expressway. The traffic flow was divided into free flow, steady-state flow and congested flow by using ν/C (volume to capacity) ratio as an index. The vehicle speed and headway were selected as characteristic parameters. SPSS (Statistical Product and Service Solutions) and Origin software were used to process and analyze the data. The results show that the rainfall will reduce the vehicle speed and make the vehicle speed distribution more concentrated, and the impact is greater in the free flow state. Rainfall has little effect on the distribution of headway under free and non-free flow conditions, but for car-following vehicles, rainfall increases the mean headway.","PeriodicalId":425834,"journal":{"name":"2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR)","volume":"415 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":"117298854","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 the Vibration Characteristics of Ship Lift under Xiangjiaba Flood Discharge 向家坝泄洪条件下升船机振动特性分析

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/ICHCESWIDR54323.2021.9656389

Liang Xu, Jin-Hui Ouyang, Xiang Wang, Xue-Long Hu, Jia-Yang Liu

{"title":"Analysis on the Vibration Characteristics of Ship Lift under Xiangjiaba Flood Discharge","authors":"Liang Xu, Jin-Hui Ouyang, Xiang Wang, Xue-Long Hu, Jia-Yang Liu","doi":"10.1109/ICHCESWIDR54323.2021.9656389","DOIUrl":"https://doi.org/10.1109/ICHCESWIDR54323.2021.9656389","url":null,"abstract":"Xiangjiaba ship lift is adjacent to the powerhouse behind the dam on the left bank. During daily operation, it is affected by the operation of the left bank unit and the dam flood discharge during flood discharge, resulting in obvious vibration response in the ship lift area. Xiangjiaba hydropower plant arranges vibration monitoring points at typical parts of ship lift area to study the vibration influence of ship lift area. In this paper, the vibration response data obtained from monitoring are used for analysis and research. It is found that the excellent frequency band of pressure pulsation excitation generated by flood discharge to Xiangjiaba in flood season is 0.3 ~ 11 Hz, which presents the characteristics of narrow-band random vibration. The analysis shows that the flood discharge excitation to Xiangjiaba in flood season does not affect the safety of ship lift tower column structure; through modal analysis, the first and second natural frequencies of the tower structure are 0.94 Hz and 1.04 Hz, and the vibration mode is mainly reflected in horizontal shaking in the cross river direction; the third and fourth order natural frequencies are 2.52 Hz and 2.87 Hz, which are mainly reflected in the horizontal shaking of the tower structure along the river. The main frequency of flood discharge pressure pulsation excitation energy is mainly distributed in the low-frequency band, which can stimulate the first few low-frequency vibrations of Xiangjiaba tower column structure. Therefore, the tower column structure will produce obvious horizontal vibration response during flood discharge.","PeriodicalId":425834,"journal":{"name":"2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR)","volume":"42 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":"131237168","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

Multi-station joint forecast model of water level in Hongze lake based on PSO-LightGBM 基于PSO-LightGBM的洪泽湖水位多站联合预报模型

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/ICHCESWIDR54323.2021.9656417

Tao Sun, Yibin Wang, Xin Jin, Zhicheng Zha

{"title":"Multi-station joint forecast model of water level in Hongze lake based on PSO-LightGBM","authors":"Tao Sun, Yibin Wang, Xin Jin, Zhicheng Zha","doi":"10.1109/ICHCESWIDR54323.2021.9656417","DOIUrl":"https://doi.org/10.1109/ICHCESWIDR54323.2021.9656417","url":null,"abstract":"A multi-Station joint forecast model of water Level based on PSO-LightGBM is proposed to solve the problems of low prediction accuracy and short effective prediction period of traditional time series model and univariate time series model. The most relevant hydrological stations are found out by calculating the Pearson correlation coefficient between the water level of Hongze Lake and the water level of relevant hydrological stations. The PSO-LightGBM single variable water level prediction model of these relevant hydrological stations is established to predict the future water level of relevant hydrological stations. Together with the water level of Hongze Lake, it is used as the multivariable in the Hongze Lake water level prediction model. The multi-Station joint forecast model of water Level in Hongze Lake based on PSO-LightGBM is established to predict the water level sequence of the next ten days of Hongze Lake. The case study shows that: the model has higher prediction accuracy than univariate PSO-LightGBM, ARIMA and LSTM models.","PeriodicalId":425834,"journal":{"name":"2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR)","volume":"52 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":"130746660","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

Unmanned-System-Based Solution for Coastal Submerged Outfall Detection 基于无人系统的沿海淹没排水口探测解决方案

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/ICHCESWIDR54323.2021.9656282

Chao Chen, F. Lyu

{"title":"Unmanned-System-Based Solution for Coastal Submerged Outfall Detection","authors":"Chao Chen, F. Lyu","doi":"10.1109/ICHCESWIDR54323.2021.9656282","DOIUrl":"https://doi.org/10.1109/ICHCESWIDR54323.2021.9656282","url":null,"abstract":"Land-based sewage discharge is closely related to the marine environment, and it is necessary to monitor, evaluate, and regulate this discharge in a scientific and comprehensive manner. However, it is often difficult to effectively detect and monitor the large number and concealment of submerged coastal outfalls. To address this challenge, we present an unmanned system submerged outfall detection method utilizing an unmanned aerial vehicle (UAV) thermal infrared sensor and an unmanned surface vehicle (USV) side-scan sonar operating in concert. Taking a typical coastal area of Shanghai submerged outfall detection as an example, the unmanned system detection methods identified 51 suspected submerged outfalls in a shoreline survey area of approximately 35.5 km, of which 49 were reviewed and confirmed to exist, with a survey success rate of 96.1%. Specifically, 18 newly discovered submerged outfalls and 31 known submerged outfalls were also identified, i.e., the success rate for the registered submerged outfalls reached 100%. The data not only verified the effectiveness and reliability of the detection method, but also provided essential data for transparent and standardized sewage discharge, scientific and accurate sewage treatment, and protection of the water quality and biodiversity in coastal areas.","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":"132096300","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: 2

Research Progress of Self-centering Structure System 自定心结构体系的研究进展

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/ICHCESWIDR54323.2021.9656437

Qian Zhang, E. Xiong

{"title":"Research Progress of Self-centering Structure System","authors":"Qian Zhang, E. Xiong","doi":"10.1109/ICHCESWIDR54323.2021.9656437","DOIUrl":"https://doi.org/10.1109/ICHCESWIDR54323.2021.9656437","url":null,"abstract":"Traditional building structures dissipate seismic energy through the plastic deformation of members in the earthquake, which may lead to a large residual deformation after the earthquake. Those structures are very difficult to repair. Traditional building structure can become a new structure with self-centering ability by using a special energy dissipation component, adding prestressed tendons or supplementing dampers. Compared to the traditional building structure, this new self-centering structure can more effectively reduce the residual deformation caused by the earthquake, and it has a desirable capability to dissipate seismic energy so as to enable itself to be of more security. In this study, the domestic and foreign self-centering structures are classified and summarized. This study deals with research progress of self-centering structures including self-centering braced steel frame structure, self-centering steel plate shear wall structure and self-centering offshore platform structure. Besides, this study introduces the related research progress of other research fellows.","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":"133220244","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 and Application of Operational Tunnel Structure Disease Prediction Based on Graph Attention Network 基于图关注网络的运营隧道结构病害预测研究与应用

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/ICHCESWIDR54323.2021.9656231

Bo Shi, ShiFei Yang, Hui Su, Xu Du, Bao Jiao

{"title":"Research and Application of Operational Tunnel Structure Disease Prediction Based on Graph Attention Network","authors":"Bo Shi, ShiFei Yang, Hui Su, Xu Du, Bao Jiao","doi":"10.1109/ICHCESWIDR54323.2021.9656231","DOIUrl":"https://doi.org/10.1109/ICHCESWIDR54323.2021.9656231","url":null,"abstract":"With the rapid development of underground engineering in China, more and more subway tunnels have been built, the operation mileage of subway tunnels has been on the rise, and the corresponding tunnel structure diseases have become increasingly prominent. At present, tunnel structure diseases are mainly treated by manual inspection and identification, and the research on disease prediction is still inadequate. Because of the complexity of factors leading to tunnel structure diseases, it is difficult to analyze the causes and development trends of diseases comprehensively via manual analysis. In addition, over recent years, deep learning has achieved great success in extracting data features (for classification and prediction), and applying deep learning algorithms to graph data is one of the most popular research directions currently. In this paper, graph attention network is introduced into tunnel structure disease prediction for the first time. Based on the characteristics of tunnel structure safety data, a spatio-temporal network is constructed, and the graph attention network is trained to predict the development trend of tunnel structure disease, which provides a new idea for tunnel disease prevention and control. In engineering practice, abundant tunnel structure safety data (68055 ring tunnel segments) were taken as the research object, both the prediction precision and recall rate of the trained model are over 80%, and the prediction results can help with auxiliary decision-making of tunnel maintenance departments and relevant government supervision departments to prevent and control tunnel structure diseases, which focus on tunnel sections where serious diseases may occur, thus further clarifying the development trend of tunnel diseases.","PeriodicalId":425834,"journal":{"name":"2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR)","volume":"7 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":"128875722","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

Intelligent Emergency Control for the Middle Route of China’s South-to-North Water Diversion Project 南水北调中线工程智能应急控制

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/ICHCESWIDR54323.2021.9656302

Y. Qiao, Xiaonan Chen, Jiahong Li, Zhao Zhang

{"title":"Intelligent Emergency Control for the Middle Route of China’s South-to-North Water Diversion Project","authors":"Y. Qiao, Xiaonan Chen, Jiahong Li, Zhao Zhang","doi":"10.1109/ICHCESWIDR54323.2021.9656302","DOIUrl":"https://doi.org/10.1109/ICHCESWIDR54323.2021.9656302","url":null,"abstract":"Huinanzhuang pump is the only booster pump of the Middle Route of China’s South-to-North Water Diversion Project (MR-SNWDP), the pump undertakes the task of supplying 75% of urban water to the capital city Beijing of China. Without accurate hydraulic responses and emergency strategies, the operators or decision-makers are unable to respond to hydraulic changes effectively in case of sudden failure of the pump. In this paper, an Emergency Control System focusing on solving the Saint Venant equation based on the computational finite difference method, was developed for a complexed water diversion project composed of open channels, escape gates, check gates, pump, outlets, and bypass pipes, to analyze the hydraulic response and the effect of various emergency control strategies. The results show that when the pump fails and the discharge decreases from 50m3/s to 0 suddenly. (1) Without any operations, downstream water level will rise at a speed of 0.4m/h rapidly. (2) The emergency control strategy combined opening bypass pipe, opening escape gate and reducing upstream discharge can control downstream water level effectively, and initial reduction of upstream discharge is not less than 10m3/s or constant reduction of upstream discharge is not less than 5m3/s. (3) The emergency control strategy of constant reduction of upstream discharge is 25m3/s and bypass pipes, escape gate are both opened immediately, can minimize the waste or escape water. (4) When the pump has conditions to restore normal operation, upstream discharge should restore to the original value before 1.3h gradually, and mode of the pump can be switched to the normal operation until increased upstream discharge spreads to the pump.","PeriodicalId":425834,"journal":{"name":"2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR)","volume":"75 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":"127351523","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

Development of intelligent integrated design system for hydraulic plane steel gate 液压平面钢闸门智能集成设计系统的开发

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/ICHCESWIDR54323.2021.9656190

Liaojun Zhang, Wenyun Yang

{"title":"Development of intelligent integrated design system for hydraulic plane steel gate","authors":"Liaojun Zhang, Wenyun Yang","doi":"10.1109/ICHCESWIDR54323.2021.9656190","DOIUrl":"https://doi.org/10.1109/ICHCESWIDR54323.2021.9656190","url":null,"abstract":"In this paper, the parametric programming language APDL of structural analysis software ANSYS and python object-oriented intelligent interface development tool pyqt5 are used to develop the intelligent integrated design system of plane steel gate. The system is composed of three parts. In the first part, the preliminary design module of plane gate based on design specification is developed by python. In the second part, APDL parametric language is used to build the database of gate components, loads, constraints and other parameters, and the three-dimensional finite element model of the overall gate is established. In the third part, the finite element structural calculation is carried out by using ANSYS software. According to the finite element calculation results, further optimization analysis is carried out to optimize the component parameters and optimize the stress state of the gate. In these parts, pyqt5 interface development tool, APDL parametric programming language and the powerful structural analysis function of ANSYS are integrated. The visual interface is used for integrated design. The data transmission of the three parts is seamlessly connected through the developed interface module, forming an intelligent and integrated plane steel gate design system, which greatly improves the design quality and design efficiency.","PeriodicalId":425834,"journal":{"name":"2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR)","volume":"85 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":"133828016","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

Finite Element Analysis of Seismic Dynamic Response of Pile Foundation in Soft Soil Foundation 软土地基桩基地震动力响应的有限元分析

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/ICHCESWIDR54323.2021.9656337

Hao Xu, K. Zeng, Gang Gan

引用次数: 0