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Title:: Dynamic Response Analysis and Seismic Stability of the Rammed Great Wall of Different Types under Earthquake Action

作者:: 孔德政¹; 2; 石玉成^1; 梁庆国²; 卢育霞¹; (1.中国地震局兰州地震研究所,甘肃兰州 730030; 2.兰州交通大学土木工程国家级实验教学示范中心,甘肃兰州 730070)

Author(s):: KONG Dezheng¹; 2; SHI Yucheng¹; LIANG Qingguo²; LU Yuxia¹; (1. Lanzhou Institute of Seismology,China Earthquake Administration,Lanzhou 730030,Gansu,China)(2. Lanzhou Jiaotong University National Demonstration Center for Experimental Civil Engineering Education,Lanzhou 730070,Gansu,China)

Keywords:: the Rammed Great Wall; seismic wave; numerical simulation; dynamic response; seismic stability

摘要:: 为了研究不同类型长城在地震作用下的动力响应特征及抗震稳定性,选取了黄羊河农场段长城、金川西段长城和长城博物馆段长城作为研究对象,通过室内土工试验得到了这3段长城的基本参数,并运用Midas-GTS软件分别建立数值模型,并输入山丹—民乐6.1级地震波判断不同长城段的动力响应及稳定性。结果表明:黄羊河农场段长城加速度和位移最大值都位于墙体右上侧,墙体最大拉应力在墙体底部,整体稳定; 金川西段长城加速度和位移随高度的增加而增大,拉应力最大处在掏蚀部位,在地震作用下不稳定; 长城博物馆段长城在通道上部加速度和位移最大,最大拉应力位于通道周围,在地震作用下不稳定。

Abstract:: In order to study the seismic dynamic response and Seismic Stability of the Rammed Great Wall of different types,the Huangyang river farm Great Wall,the Jinchuanxi Great Wall and the Great Wall of the Great Wall Museum were selected in this paper. The basic parameters of three sections of the Great Wall are obtained by laboratory soil tests. Based on Midas-GTS finite element software,the Great Wall of three sections were built respectively. After inputting Shandan 6.1 magnitude seismic wave,the results of this study are summarized as follows. The maximum acceleration and displacement of the Huangyang river farm Great Wall are located at upper right-side in the wall,the maximum tensile stress is located at the bottom of the wall. The Great Wall of Huang yang river farm is in a basically stable state under earthquake action. Acceleration and displacement of Jinchuanxi increase with the altitude of the wall,the maximum tensile stress is located at the basal sapping region. The Jinchuanxi Great Wall will to collapse under earthquake action. The maximum acceleration and displacement of the Great Wall at Shandan Great Wall Museum are located at above passageway of the wall,the maximum tensile stress is located at the passageway periphery region. The Great Wall of Shandan Great Wall Museum will probably collapse under earthquake action.