不同加载顺序下某高心墙堆石坝静动力计算

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英文篇名：Static and Dynamic Analysis of High Earth Core Rock-Fill Dam with Two Different Orders of Applying Loads 中文刊名：人民黄河 英文刊名：Yellow River 作者：周磊 ; 陆静 ; 张楠 英文作者：ZHOU Lei1 ; 2 ; LU Jing1 ; 2 ; ZHANG Nan1 ; 2(1.State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering ; Hohai University ; Nanjing 210098 ; China ; 2.Institute of Hydraulic Structures ; Hohai University ; Nanjing 210098 ; China) 中文关键词：加载顺序 ; 沉降 ; 应力 ; 静动力分析 ; 高心墙堆石坝 英文关键词：order of applying loads ; settlement ; stress ; static and dynamic analysis ; high earth core rock-fill dam 出版日期：2013-05-10 机构：河海大学水文水资源与水利工程科学国家重点实验室;河海大学水工结构研究所; 年：2013 期：05 出版单位：人民黄河

摘要

某拟建高心墙堆石坝考虑完全填筑后蓄水和边填筑边蓄水两种加载顺序,采用有限元方法对其进行静动力分析,结果表明:加载顺序对动力计算的影响很小,对静力计算的影响较大。在边填筑边蓄水的加载顺序下,坝体的竖向沉降和应力值较大,心墙较大的中主应力能够减小水力劈裂的可能性,同时这种加载顺序也可提高心墙和反滤层抗液化的能力。
This paper analyzed the static and dynamic settlement and stress of a proposed high earth core rock-fill dam by the finite element method,considering two different orders of applying loads of completely filling after impoundment and turns of filling and impoundment.The results show that the two different orders of applying loads have little impact on the dynamic analysis,but have great impact on the static analysis which mainly reflected in vertical settlement and stress values.The vertical settlement and stress values are larger when filling and impoundment take turns.The larger medium principal stress of core-wall can reduce the possibility of hydraulic fracturing.This order of applying loads also can improve the liquefaction resistant ability of core-wall and inverted filter.

引文

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