混凝土重力坝抗震配筋加固数值模拟分析  

Numerical simulation of seismic reinforcement effects for concrete gravity dams

作　　者：李静 陈健云[1] 李雪雷[2] 

机构地区：[1]大连理工大学建设工程学部,辽宁大连116023 [2]中国水电顾问集团昆明勘测设计研究院,昆明650051

出　　处：《振动与冲击》2014年第20期75-80,共6页Journal of Vibration and Shock

基　　金：国家重点基础研究发展计划(2013CB035900)

摘　　要：针对地震作用下重力坝损伤开裂直接影响大坝安全问题,以Koyna水坝为研究对象,提出两种不同抗震配筋形式,利用混凝土塑性损伤开裂模型计算不同配筋方案混凝土重力坝地震响应。采用钢筋混凝土嵌入式模型考虑钢筋加强作用,据断裂能守恒原理调整混凝土软化段曲线,获得强化后混凝土本构。数值分析结果验证在坝体薄弱部位进行抗震配筋的必要性与实用性。Damage and crack are the key factors affecting the dam’s safety under seismic excitation.Taking the Koyna arch dam as an example,two different forms of seismic reinforcement schemes were presented.According to the plastic-damage and crack model of concrete and also the embedded model of reinforced concrete,the seismic responses of concrete gravity dams were calculated under different reinforcement schemes. The results verify the necessity and practicality of arranging reinforcement for strengthening seismic resistance at weak parts of the dam.

关 键 词：重力坝 损伤开裂 配筋措施 嵌入式模型 

分 类 号：TV31[水利工程—水工结构工程]