基于极大初始时间步法的某重力坝后背管静动联合分析  

A Gravity Dam Back Pipeline Static-Dynamic Coupling Analysis based on Maximum Initial Time-Step Method

作　　者：李晓燕 高嵩 尹训强[2] 

机构地区：[1]浙江省交通规划设计研究院,浙江杭州310006 [2]大连大学土木工程技术研究与开发中心,辽宁大连116622

出　　处：《大连大学学报》2017年第6期33-37,46,共6页Journal of Dalian University

基　　金：国家自然科学基金项目(51378085;51008040);辽宁省博士启动基金(201601309);大连大学优秀青年博士专项基金(2015YBL010)

摘　　要：如何进行静动力联合分析是结构响应分析的关键技术问题。极大初始时间步法是在结构的抗震计算使用的时程分析的方法中在Newmark法的基础上,通过结合Newmark积分算法的隐式求解特点而优化得到的一种计算方法。它可以对结构进行静动力联合分析。本文以某重力坝的后背管作为研究对象,利用极大初始时间步法对结构进行静动力联合分析,通过对提取的静力结果和动力结果分析,得出此重力坝后背管薄弱的部位处于管坝交界处以及进水口处。Static-Dynamic coupling analysis is one of the key technical problems of structural response analysis. Maximum Initial Time-Step Method is in structural a seismic calculation time history analysis method based on Newmark method. By combining with the characteristics of implicit Newmark integral algorithm to solve the optimization of a kind of calculation method, it can analyze the structure by Static-Dynamic Coupling Analysis. A gravity dam back pipeline is taken as the research object in this paper, Static-Dynamic coupling analysis of the structure is done with Maximum Initial Time-Step Method. To calculate the gravity dam earthquake response that the probability of earthquake occurrence is 2% in 100 years. By analyzing the calculation results of static analysis and dynamic analysis extracted. It is found that the junction of pipeline and dam and the water inlet are the weak parts of the gravity dam back pipeline.

关 键 词：极大初始时间步法 重力坝后背管 静动联合分析 

分 类 号：TV732[水利工程—水利水电工程]