水工隧道衬砌地震作用力计算方法探讨

英文篇名：Discussion on Calculating Methods for the Seismic Force of Hydraulic Tunnel Lining
中文刊名：水力发电
英文刊名：Water Power
作者：孙常新 ; 丁树云 ; 高峰
英文作者：Sun Changxin1 ; 2 ; Ding Shuyun1 ; Gao Feng2(1.School of Resources and Environment ; North China University of Water Resources and Electric Power ; Zhengzhou 450011 ; Henan ; China ; 2.Chongqing Jiaotong University ; Chongqing 400074 ; China)
中文关键词：水工隧道 ; 衬砌 ; 地震作用力 ; 计算方法
英文关键词：hydraulic tunnel ; lining ; seismic force ; calculating method
出版日期：2011-09-12
机构：华北水利水电学院资源与环境学院;重庆交通大学;
年：2011
期：09
出版单位：水力发电

摘要

在进行水工隧道衬砌地震作用力计算时,目前采用的解析方法存在加力困难,数值计算方法对初始应力场的使用方法不严密,两种方法对围岩类别和埋深的影响考虑不充分并且计算结果相差较大。针对存在的这些问题,改进了荷载施加方式,修正了初始应力场,得到了比较满意的结果。
There are four problems in calculating the seismic force of hydraulic tunnel lining by using analytical and numerical methods:(a) the force is difficult to apply on structure by using analytical method;(b) the adoption of initial stress field in numerical method is imprecise;(c) the results calculated by two methods have greater difference;and(d) the influences caused by surrounding rock classification and the depth of tunnel are not being considered enough in two methods.For solving these problems,the improvements on load application and initial tress field correction are conducted herein.The results calculated by improved methods are satisfactory.

引文

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