水力发电学报2012，Vol.31Issue(5)：178-183,190,7.
超强地震作用下高拱坝损伤开裂行为研究
Study on cracking behavior of high arch dam subjected to strong earthquakes
摘要
Abstract
A numerical study is presented for cracking behaviors of high arch dam under strong earthquakes, using a plastic-damage model and a contact boundary method to model concrete cracking and opening/closing behaviors of contraction joint, respectively, and focusing on the influence of thermal loading on dynamic responses of the dam. Computations of the responses show that on the downstream face, concrete cracking occurs in the upper middle region of dam body, while on the upstream face, it concentrates near the dam- foundation interface. These cracks are large in magnitude and extend to the deep interior of the body, hence causing a potential threatening to instability of dam structure. The results indicate a significant influence of thermal loading on the dynamic responses of joint opening, cracks and crack opening displacement, etc.关键词
水工结构/开裂损伤/数值仿真/高拱坝/超强地震Key words
hydraulic structure/cracking damage/numerical simulation/high arch dam/strong earthquakes分类
建筑与水利引用本文复制引用
龙渝川..超强地震作用下高拱坝损伤开裂行为研究[J].水力发电学报,2012,31(5):178-183,190,7.基金项目
国家自然科学基金 （）
教育部高等学校博士学科点科研基金 （）
中央高校基本科研业务费资助项目 （）
