基于拱梁分载法的拱坝应力分析  

Stress Analysis of Arch Dam Based on the Trial Load Method

作　　者：石立 郭嘉晖 陈健云 李昕 徐强 李思源 SHI Li;GUO Jiahui;CHEN Jianyun;LI Xin;XU Qiang;LI Siyuan(Faculty of Infrastructure Engineering,Dalian University of Technology,Dalian 116024,Liaoning,China;PowerChina Xibei Engineering Corporation Limited,Xi'an 710065,Shaanxi,China)

机构地区：[1]大连理工大学建设工程学部,辽宁大连116024 [2]中国电建集团西北勘测设计研究院有限公司,陕西西安710065

出　　处：《水力发电》2021年第5期61-66,共6页Water Power

摘　　要：运用拱梁分载法对某混凝土双曲拱坝设计方案进行了大坝静力及动力分析,选取8拱15梁对拱坝进行拱梁网格划分,计算了荷载基本组合和偶然组合下的9个计算工况,得到了上、下游坝面的应力极值。由应力极值结果表明,该拱坝设计方案应力分布规律合理,最大主拉应力值、最大主压应力值、梁向应力值与拱向应力值在控制工况下均满足我国规范规定的应力控制要求,可为实际工程设计与抗震安全提供参考。The static and dynamic analysis of a concrete hyperbolic arch dam is carried out by using the trial load method to check whether the design scheme is reasonable.Eight arches and fifteen beams of the arch dam are selected to mesh the arch dam,and the stress extremes of the upstream and downstream dam surfaces under nine operating conditions including basic load combinations and accidental load combinations are obtained.The results show that the stress distribution of the arch dam is reasonable,and the maximum principal tensile stress value,maximum principal compressive stress value,beam-direction stress value and arch-direction stress value all meet the stress control requirements specified by the specifications under control conditions.It can provide references for practical engineering design and seismic safety.

关 键 词：拱梁分载法 双曲拱坝 应力分析 控制工况 抗震 

分 类 号：TV642.4[水利工程—水利水电工程]