ce/papers最新文献_第3页

The Influence of the Reinforcement Method of Anti-slide Piles on Slope Stability 抗滑桩加固方法对边坡稳定性的影响

ce/papers Pub Date : 2025-03-18 DOI: 10.1002/cepa.3159

Nan Zhang, Shijie Zou, Zhilin Mao, Jiajie Chen

引用次数: 0

Research on Self-centering Aseismic Device Based on Disc Springs 基于碟形弹簧的自定心抗震装置研究

ce/papers Pub Date : 2025-03-18 DOI: 10.1002/cepa.3203

Hongmei Ren, Gongsheng Peng

引用次数: 0

The Effect of Different Clay Contents on the Creep Characteristics of Calcareous Sand 不同粘土含量对钙质砂蠕变特性的影响

ce/papers Pub Date : 2025-03-18 DOI: 10.1002/cepa.3132

Le Sun, Yan Gao

{"title":"The Effect of Different Clay Contents on the Creep Characteristics of Calcareous Sand","authors":"Le Sun, Yan Gao","doi":"10.1002/cepa.3132","DOIUrl":"https://doi.org/10.1002/cepa.3132","url":null,"abstract":"The geotechnical characteristics of calcareous sand are intrinsically linked to the development and execution of island and reef construction projects. During the reclamation process for islands and reefs, the inevitable inclusion of fine particles can lead to the formation of mixed soil bodies, thereby affecting the overall stability of the island or reef. To investigate the effect of different clay contents on creep characteristics of calcareous sand, triaxial stepped loading creep tests were systematically conducted on calcareous sand with varying clay content percentages, specifically at 0%, 2%, 10%, and 20% in the study. It is found that with increasing clay content, the amount of creep deformation initially decreases and then increases. There exists an optimal clay content between 2% and 10% that enhances the overall strength of the calcareous sand. Additionally, when the creep deviatoric stress is low, the creep of calcareous sand exhibits nonlinear decelerative creep. When the creep deviatoric stress is relatively high, the creep rate initially decreases and then increases, leading to overall creep failure. As the clay content increases, the role of fine particles in calcareous sand transitions from filling voids and enhancing the interparticle interlocking to predominantly providing lubrication and weakening the particle interlocking. During creep, there is a transient but significant creep structure effect that causes a marked reduction in the creep rate when the sample transitions to the next stage. This effect persists until the creep structure is disrupted, leading to an augmentation in the creep rate and a subsequent reversion to the initial creep pattern.","PeriodicalId":100223,"journal":{"name":"ce/papers","volume":"8 2","pages":"400-408"},"PeriodicalIF":0.0,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645974","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

Deformation Analysis of the Main Beam of a Cable-stayed Bridge with Maximum Double Cantilever Construction under Lateral Static Wind Load 横向静风荷载作用下最大双悬臂斜拉桥主梁变形分析

ce/papers Pub Date : 2025-03-18 DOI: 10.1002/cepa.3259

Chunming Xie, Qi Xiang, Mingguo Li, Yan Ren

{"title":"Deformation Analysis of the Main Beam of a Cable-stayed Bridge with Maximum Double Cantilever Construction under Lateral Static Wind Load","authors":"Chunming Xie, Qi Xiang, Mingguo Li, Yan Ren","doi":"10.1002/cepa.3259","DOIUrl":"https://doi.org/10.1002/cepa.3259","url":null,"abstract":"Long-span cable-stayed bridges have relatively small structural stiffness under maximum double cantilever construction and are prone to vertical deformation under wind load. In order to understand the influence of lateral static wind load on the vertical deformation of the main beam of a cable-stayed bridge, the maximum double cantilever construction state of a double tower cable-stayed bridge with a main span of 338 m was taken as the background during the typhoon period. Three stress conditions, namely self-weight, self-weight plus construction load, and typhoon lateral static wind load, were calculated and analyzed using finite element software. The research results indicate that under the maximum double cantilever construction state, the vertical deformation caused by the self-weight of the main beam of the cable-stayed bridge is the most significant. After applying the construction load, the vertical deformation increased by 5.3%. After applying the construction load and typhoon lateral static wind load, the vertical deformation increased by 7.8%. The lateral static wind load has little effect on the vertical of the main beam. It is recommended that the wind resistance performance of cable-stayed bridges under the maximum double cantilever construction state mainly considers wind-induced buffeting response. At the same time, it is necessary to carry out relevant research on specific issues.","PeriodicalId":100223,"journal":{"name":"ce/papers","volume":"8 2","pages":"1747-1756"},"PeriodicalIF":0.0,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143646122","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

A New Algorithm for Association of Rain Gauging Stations in Flash Flood Prevention and Control Areas 一种新的山洪防治区雨量测量站关联算法

ce/papers Pub Date : 2025-03-18 DOI: 10.1002/cepa.3283

Sili Long, Zongfu Chen, Jianglin Qin, Shunfu Zhang

{"title":"A New Algorithm for Association of Rain Gauging Stations in Flash Flood Prevention and Control Areas","authors":"Sili Long, Zongfu Chen, Jianglin Qin, Shunfu Zhang","doi":"10.1002/cepa.3283","DOIUrl":"https://doi.org/10.1002/cepa.3283","url":null,"abstract":"Rain gauging station is an important defense for flash flood disaster. It provides primary data support for flash flood disaster early warning. To improve the insufficient consideration of the upstream to downstream topology in the watershed and insufficient representativeness of the rain gauging stations, an association algorithm between the automatic rain gauging stations and the flash flood prevention and control area based on the watershed's topological relationship is proposed, with the weight of the associated rain gauging stations determined by the Thiessen polygon method. Moreover, the simple rain gauging stations is proposed to act as the backup stations to improve the resilience of the early warning system under extreme rainstorm conditions. The Tonghua village in Linchuan County is investigated. The related rain gauging stations are searched in and around its upstream area according to the principle of effective coverage. The rain gauging stations are then in logical correspondence with the prevention and control area, and the weights of the rain gauging stations are determined. These conform to the spatial variation of rainfall in the basin, so the rainfall quantity for early warning could be more representative and accurate.","PeriodicalId":100223,"journal":{"name":"ce/papers","volume":"8 2","pages":"1996-2004"},"PeriodicalIF":0.0,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143646181","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

Calculation Method for the Critical Temperature of Bending and Torsional Buckling of the herringbone steel frame columns in Substations Under Fire Conditions* 火灾条件下变电站人字形钢框架柱弯曲和扭转屈曲临界温度的计算方法*

ce/papers Pub Date : 2025-03-18 DOI: 10.1002/cepa.3181

Jiaqing Zhang, Rui Liu, Jianlin Li, Yi Guo, Yang He

引用次数: 0

Study on Seepage Control Schemes and Their Effects in Typical Embankment Sections of the Middle Reaches of the Yangtze River 长江中游典型河堤断面防渗方案及效果研究

ce/papers Pub Date : 2025-03-18 DOI: 10.1002/cepa.3277

Jiaxin Chen, Yi Pei, Haodong Cui

{"title":"Study on Seepage Control Schemes and Their Effects in Typical Embankment Sections of the Middle Reaches of the Yangtze River","authors":"Jiaxin Chen, Yi Pei, Haodong Cui","doi":"10.1002/cepa.3277","DOIUrl":"https://doi.org/10.1002/cepa.3277","url":null,"abstract":"Piping is one of the most common emergencies in the Yangtze River embankment defense system and poses a significant threat to the safety of the embankment. Based on historical data and field investigations, this study takes the piping in the Changsun Embankment section of the Huangzhou section of the Yangtze River as an example. Utilizing a three-dimensional seepage finite element model for calculation, this study compares and analyzes the impact of the failure and normal functioning of relief wells on the seepage field, conducting an effectiveness study of relief well measures. At the same time, under the condition of no anti-seepage system, a comparative analysis of the vertical permeability gradient under different relief well spacing and well mouth elevation is carried out, leading to the following conclusions: (1) The drainage and decompression effect of the relief well is greatly influenced by the spacing between relief wells; as the spacing increases, the decompression effect gradually decreases; (2) The lower the well mouth elevation of the relief well, the better the effect. An optimal layout plan for relief wells is proposed according to the characteristics of the emergency, which can provide a reference for the layout of relief wells in similar geological strata with piping emergencies.","PeriodicalId":100223,"journal":{"name":"ce/papers","volume":"8 2","pages":"1941-1949"},"PeriodicalIF":0.0,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645706","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 Key Construction Technologies for Large Span V-shaped Pier Rigid Frame Bridges 大跨度v型墩刚架桥施工关键技术研究

ce/papers Pub Date : 2025-03-18 DOI: 10.1002/cepa.3221

Feng Yang, Xiaomin Huang, Zhiqiang Yi, Yingna Chen, Qing Shen, Xinglun Ru, Tao Zhou, Yunlong Liu

{"title":"Research on Key Construction Technologies for Large Span V-shaped Pier Rigid Frame Bridges","authors":"Feng Yang, Xiaomin Huang, Zhiqiang Yi, Yingna Chen, Qing Shen, Xinglun Ru, Tao Zhou, Yunlong Liu","doi":"10.1002/cepa.3221","DOIUrl":"https://doi.org/10.1002/cepa.3221","url":null,"abstract":"The V-shaped pier rigid frame bridge has flexible lines and smooth structure. How to effectively choose the appropriate construction design scheme to reduce the stress on the bridge is the key to bridge construction. In this paper, the structural optimization scheme of the bridge is obtained through finite element software simulation analysis, the pre-stressing system and camber degree are optimized, and the height and other aspects of the bridge are analyzed. Through simulation optimization, the stress distribution of V-shaped pier rigid frame bridge can be analyzed. And by improving the influence of structural parameters such as inclination ratio a and height ratio b, a bridge structure with more reasonable stress distribution can be obtained. Based on this design scheme, the key technology for the construction of large-span V-shaped pier rigid bridge is studied, and through the optimisation of the process, the structure of the bridge is made more stable, and finally, the optimised structural parameters are the inclination ratio a is selected as 0.48, and the height ratio b is 4.93. At this time, the tensile stresses on the outer limb legs and the bottom of the pier base are effectively reduced, and it provides the idea for the development of similar projects.","PeriodicalId":100223,"journal":{"name":"ce/papers","volume":"8 2","pages":"1343-1357"},"PeriodicalIF":0.0,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645740","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 Performance Parameter Analysis of Prefabricated Segmental Hybrid-Connected Double-Column Piers 预制节段混合连接双柱墩抗震性能参数分析

ce/papers Pub Date : 2025-03-18 DOI: 10.1002/cepa.3231

Zuoqiao You, Peng Wang, Lei Wang, Shaohui Xiong

{"title":"Seismic Performance Parameter Analysis of Prefabricated Segmental Hybrid-Connected Double-Column Piers","authors":"Zuoqiao You, Peng Wang, Lei Wang, Shaohui Xiong","doi":"10.1002/cepa.3231","DOIUrl":"https://doi.org/10.1002/cepa.3231","url":null,"abstract":"Due to the unclear seismic mechanism of prefabricated segmental assembled piers and the lack of earthquake damage data, their application in areas prone to strong earthquakes is limited. This study establishes a 3D model of prefabricated segmental hybrid-connected double-column piers using the ABAQUS finite element analysis software to investigate their seismic performance. The study focuses on the influence of prestressing tendon cross-sectional area and prestress magnitude on the structural performance. The results show that increasing the cross-sectional area of prestressing tendons enhances the load-bearing capacity and energy dissipation of the piers while reducing residual displacement after an earthquake. However, its impact on stiffness degradation is relatively limited. Moreover, increasing prestress appropriately not only improves load-bearing capacity and energy dissipation but also effectively reduces residual displacement. Nevertheless, excessive prestress may reduce the ductility factor of the structure, limiting its plastic deformation capacity. The experimental results indicate that rational control of prestress and tendon cross-sectional area is critical for optimizing the seismic design of double-column piers. This research provides theoretical support and design guidance for the practical application of prestressed segmental assembled double-column piers in engineering projects.","PeriodicalId":100223,"journal":{"name":"ce/papers","volume":"8 2","pages":"1448-1457"},"PeriodicalIF":0.0,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645842","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

Effectiveness Simulation Analysis of a New Pullout-resistant Friction Pendulum Isolation Bearing 一种新型抗拉摩擦摆隔震轴承有效性仿真分析

ce/papers Pub Date : 2025-03-18 DOI: 10.1002/cepa.3199

Siyao He, Wen Bai, Junwu Dai, Xiaorui Liu

引用次数: 0