地震研究

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。

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.

引言
1 典型段长城物性参数
2 模型的建立
3 地震波的选择
4 动力响应及稳定性分析
5 结论与讨论

图1 黄羊河农场段(a)、金川西段(b)、长城博物馆段(c)长城墙体<br/>Fig.1 The Huangyanghe farm section(a),the Jinchuan west section(b)and the Great Wall Museum section(c)of the Great Wall

图1 黄羊河农场段(a)、金川西段(b)、长城博物馆段(c)长城墙体
Fig.1 The Huangyanghe farm section(a),the Jinchuan west section(b)and the Great Wall Museum section(c)of the Great Wall

表1 3段长城物性参数<br/>Tab.1 Physical-mechanical parameters of the three sections of the Great Wall

表1 3段长城物性参数
Tab.1 Physical-mechanical parameters of the three sections of the Great Wall

图2 黄羊河农场段(a)、金川西段(b)、长城博物馆段(c)长城模型<br/>Fig.2 The models of the Huangyanghe farm section (a),the Jinchuan west section(b)and the Great Wall Museum section(c)of the Great Wall

图2 黄羊河农场段(a)、金川西段(b)、长城博物馆段(c)长城模型
Fig.2 The models of the Huangyanghe farm section (a),the Jinchuan west section(b)and the Great Wall Museum section(c)of the Great Wall

图3 金川西段长城模型掏蚀尺寸<br/>Fig.3 Basal sapping geometry of the Jinchuan west section of the Great Wall

图3 金川西段长城模型掏蚀尺寸
Fig.3 Basal sapping geometry of the Jinchuan west section of the Great Wall

表2 3段长城材料参数<br/>Tab.2 Material parameters of three sections of the Great Wall

表2 3段长城材料参数
Tab.2 Material parameters of three sections of the Great Wall

图4 山丹—民乐6.1级地震东西向(a)、南北向(b)、垂直向(c)加速度时程<br/>Fig.4 Acceleration time histories of the ShandanMS6.1 earthquake in EW(a),NS(b) and vertical(c)directions

图4 山丹—民乐6.1级地震东西向(a)、南北向(b)、垂直向(c)加速度时程
Fig.4 Acceleration time histories of the ShandanMS6.1 earthquake in EW(a),NS(b) and vertical(c)directions

图5 黄羊河农场段(a)、金川西段(b)、长城博物馆段(c)长城加速度云图<br/>Fig.5 Acceleration nephograms of the Huangyanghe farm section(a),the Jinchuan west section(b) and the Great Wall Museum section(c) of the Great Wall

图5 黄羊河农场段(a)、金川西段(b)、长城博物馆段(c)长城加速度云图
Fig.5 Acceleration nephograms of the Huangyanghe farm section(a),the Jinchuan west section(b) and the Great Wall Museum section(c) of the Great Wall

图6 黄羊河农场段高度(a)及走向(b)方向、金川西段(c)、长城博物馆段高度(d)及走向(e)方向长城加速度变化趋势<br/>Fig.6 Acceleration variation trend of the Huangyanghe farm section in height(a)and trending(b)directions,the Jinchuan west section and the Great Wall Museum section in height(d)and trending(e)directions of the Great Wall

图6 黄羊河农场段高度(a)及走向(b)方向、金川西段(c)、长城博物馆段高度(d)及走向(e)方向长城加速度变化趋势
Fig.6 Acceleration variation trend of the Huangyanghe farm section in height(a)and trending(b)directions,the Jinchuan west section and the Great Wall Museum section in height(d)and trending(e)directions of the Great Wall

图7 黄羊河农场段高度(a)及走向(b)方向、金川西段(c)、长城博物馆段高度(d)及走向方向(e)长城位移变化趋势<br/>Fig.7 Displacement variation trend of the Huang-yanghe farm section in height(a)and trending(b) directions,the Jinchuan west section and the Great Wall Museum section in height(d)and trending (e)directions of the Great Wall

图7 黄羊河农场段高度(a)及走向(b)方向、金川西段(c)、长城博物馆段高度(d)及走向方向(e)长城位移变化趋势
Fig.7 Displacement variation trend of the Huang-yanghe farm section in height(a)and trending(b) directions,the Jinchuan west section and the Great Wall Museum section in height(d)and trending (e)directions of the Great Wall

图8 黄羊河农场段(a)、金川西段(b)、长城博物馆段(c)长城最大拉应力云图<br/>Fig.8 Max tensile stress nephogram of the Huang-yanghe farm section(a),the Jinchuan west section(b)and the Great Wall Museum section(c)of the Great Wall

图8 黄羊河农场段(a)、金川西段(b)、长城博物馆段(c)长城最大拉应力云图
Fig.8 Max tensile stress nephogram of the Huang-yanghe farm section(a),the Jinchuan west section(b)and the Great Wall Museum section(c)of the Great Wall

表3 长城动力响应及抗震稳定性<br/>Tab.3 Dynamic response and seismic stability of the Great Wall

表3 长城动力响应及抗震稳定性
Tab.3 Dynamic response and seismic stability of the Great Wall

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备注

引言

1 典型段长城物性参数

2 模型的建立

3 地震波的选择

4 动力响应及稳定性分析

5 结论与讨论

期刊信息