地震作用下地下洞室群损伤演化规律和分布特征  

Damage evolution and distribution of underground cavern group under earthquake action

作　　者：张玉敏[1] 王玉杰[2] 朱泽奇[3] 

机构地区：[1]华北水利水电大学,河南郑州450011 [2]辽宁科技大学土木工程学院,辽宁鞍山114051 [3]中国科学院武汉岩土力学研究所,岩土力学与工程国家重点实验室,湖北武汉430071

出　　处：《世界地震工程》2013年第4期108-113,共6页World Earthquake Engineering

基　　金：国家自然科学基金重大研究计划资助项目(No.90715042);华北水利水电大学高层次人才科研启动项目资助

摘　　要：选用日本Kobe地震波作为实际地震动输入,通过基线校正与高频滤波,利用FLAC3D软件对西南地区某水电站大型地下洞室群进行了地震作用下损伤演化规律和分布特征的数值分析研究。结果表明,随着加速度由弱变强,主厂房、主变室和尾调室边墙中部损伤区向深处扩展。损伤区主要分布在主厂房和尾调室的边墙和顶拱处,以及主变室的边墙和底板处。随着输入加速度的增大,损伤区面积逐步扩展,在输入地震动强度达到最大值时,损伤区面积也很快达到最大面积,其后损伤区面积就一直保持不变。In terms of baseline correction and high frequency filter,one of the Kobe earthquake records of Japan was selected as the actual seismic input for numerical simulating the damage evolution and distribution of large underground cavern group of some hydraulic power station in southwest China by software FLAC3D.The results show that the damage zone extends deeply from the sidewall＇ s middle of main power building,main transformer chamber and tailrace surge chamber as the acceleration increases.The damage zones occur basically in the sidewall and top of main power building and tailrace surge chamber,and in the sidewall and bottom of main transformer chamber.The damage zone extends gradually with acceleration,and reaches the maximum area soon after the acceleration peak,and then keeps unchanged thereafter.

关 键 词：地下洞室群 地震作用 损伤演化 分布特征 损伤区 

分 类 号：TU45[建筑科学—岩土工程]