重力坝地震损伤分析中弹性损伤与考虑残余变形的损伤模型比较  

Comparison of elastic damage model and damage model considering residue deformation for seismic damage analysis of gravity dams

作　　者：李德玉[1,2] 郭胜山[2] 陈厚群[2] 欧阳金惠[2] 

机构地区：[1]西安理工大学,西安710038 [2]中国水利水电科学研究院,北京100048

出　　处：《水力发电学报》2013年第5期226-231,238,共7页Journal of Hydroelectric Engineering

摘　　要：弹性损伤与考虑残余变形的损伤模型是目前混凝土坝损伤分析中常用的两种模型。本文将两种损伤模型应用在Koyna重力坝破坏分析中,比较了两者模拟的开裂范围和裂缝张开度。计算结果表明:弹性损伤模型计算所得坝体的开裂范围和裂缝张开度均小于考虑残余变形损伤模型计算所得结果。弹性损伤模型计算所得结果偏于不安全。Elastic damage model and damage model considering residue deformation are two commonly used models for seismic damage analysis of gravity dams. They were used to calculate crack range and opening width in the seismic analysis of the Koyna dam and their computations are compared. The results show that the crack range and maximum opening width computed with the elastic damage model are smaller than those with the damage model considering residue deformation. Thus, the simulation results with the elastic damage model are unsafe.

关 键 词：水工结构 损伤模型比较 动力有限元法 重力坝 开裂 

分 类 号：TV31[水利工程—水工结构工程]