地震作用下混凝土重力坝极限抗震能力分析  

Analysis on Ultimate Seismic Capacity of Gravity Dam under Earthquake Effect

作　　者：王旭东 张立翔[1] 朱兴文 WANG Xudong;ZHANG Lixiang;ZHU Xingwen(Faculty of Civil and Architectural Engineering,Kunming University of Science and Technology,Kunming 650500, Yunnan,China;School of Mathematics and Computer,Dali University,Dali 671003,Yunnan,China)

机构地区：[1]昆明理工大学建筑工程学院工程力学系,云南昆明650500 [2]大理大学数学与计算机学院,云南大理671003

出　　处：《水力发电》2019年第1期23-27,共5页Water Power

基　　金：国家自然科学基金资助项目(51279071);国家自然科学基金青年项目(51809026);教育部高等学校博士学科点专项科研基金(优先发展领域)项目(20135314130002)

摘　　要：采用ABAQUS中的混凝土塑性损伤模型来模拟某重力坝的地震响应特性,分析不同强度地震下坝体损伤破坏区。以印度的Koyna混凝土重力坝为例,采用混凝土塑性损伤模型模拟了大坝动力损伤破坏过程,数值模拟结果与文献中模型试验结果基本相同,验证了数值模型的正确性,根据损伤破坏效应能够判定Koyna重力坝的极限抗震能力为0. 4g～0. 45g。对云南省某混凝土重力坝的极限抗震能力进行了探讨,根据重力坝的损伤破坏效应可以初步认定该混凝土重力坝的极限抗震能力在0. 4g～0. 45g。The concrete plastic damage model in ABAQUS is used to simulate the response characteristics of a concrete gravity dam under earthquake. The dam damage and destruction zone under different strong earthquake is analyzed. Taking Koyna concrete gravity dam in India as an example,the plastic damage model of concrete is used to simulate the process of dam damage and failure. The numerical simulation results are basically the same as the model test results in the literature,which verified the correctness of numerical model. According to damage effect,it can be judged that the ultimate seismic capacity of Koyna gravity dam is 0. 4g-0. 45 g. The ultimate seismic capacity of a concrete gravity dam in Yunnan Province is also discussed,and according to the damaging effect of gravity dam,it can be initially determined that the ultimate seismic capacity of this dam is 0. 4g-0. 45 g.

关 键 词：混凝土重力坝 地震 塑性损伤模型 极限抗震能力 

分 类 号：TV312[水利工程—水工结构工程]