汶川地震断裂带附近建筑物的灾害效应模拟研究

苏生瑞; 张永双; 郝莉莉; 李松

汶川地震断裂带附近建筑物的灾害效应模拟研究

1.
长安大学地质工程系, 陕西西安 710054
2.
中国地质科学院地质力学研究所, 北京 100081

基金项目:

中国地质调查局项目 1212010914025

国家自然科学基金重点项目 41030749

详细信息

作者简介:
苏生瑞(1963-)，男，甘肃庆阳人，工学博士，长安大学地质工程系教授，从事地质工程教学和研究工作

中图分类号: P315.9
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- 被引次数: 0
出版历程
- 收稿日期: 2011-04-27
- 刊出日期: 2011-12-28

NUMERICAL STUDY ON THE HAZARD EFFECT OF A BUILDING NEAR THE FAULT PRODUCED BY THE WENCHUAN EARTHQUAKE

1.
School of Geological Engineering and Surveying, Chang'an University, Xi'an 710054, China
2.
Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China

摘要

摘要: 位于汶川地震破裂带附近的汶川水磨镇硅业公司厂房在地震中产生了独特的破坏现象.根据现场调查和测绘资料, 建立了二维有限元模型, 进行了断裂带附近建筑物灾害效应的数值模拟.模拟结果很好地解释了厂房在地震中产生的独特破坏现象的机理.研究表明, 断层的形成改变了局部的应力场条件和加速度特征, 从而使位于断层上盘的楼房发生差异性破坏, 紧邻断层一侧破坏强烈.地震时楼体主梁的破坏是轴向应力和剪应力同时作用造成的.
- 断裂带 /
- 建筑物 /
- 灾害效应 /
- 数值模拟
Abstract: Particular destroy phenomena occurred in the main building of Shuimo Silicon Company near the fault produced by the 2008 Wenchuan earthquake. On the basis of site investigation, two-dimensioanl finite element model is set up, and the hazard effect of a building caused by the faulting is simulated. The simulation result may be used to explain the mechanism for the formarion of the particular destroy phenomena of the building during the earthquake. It is thought that the formation of fault altered the local stress field and acceleration, thus led to the differential destroy of the building at the hanging wall of the fault which is characetrized by the stronger destroy near the fault. The destroy of the main beam is caused by the co-action of axial stress and shear stress.
- fault zone /
- building /
- hazard effect /
- numerical modelling

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图 1 厂房平面图

(图中数字为柱的编号)

Figure 1. Plane of the factory building

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图 2 位于角部的柱体错动

Figure 2. Dislocation of the pile

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图 3 靠近断层一侧钢筋混凝土柱破坏

Figure 3. Failure of concrete pile adjacent to the fault

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图 4 钢筋混凝土柱遭挤压、剪切破坏

(图 1中14号柱)

Figure 4. Sheared and compressed failure of the pile

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图 5 场地地质剖面图

Figure 5. Geological profile of the site

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图 6 几何模型

Figure 6. Geomertrical model

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图 7 厂房地基最大主应力分布图

Figure 7. Distribution of the maximum principal stress in base

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图 8 厂房地基剪应力云图

Figure 8. Shear stress of the base

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图 9 梁单元轴向应力曲线图

Figure 9. Axial stresses of the beam element

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图 10 梁单元剪应力曲线图

Figure 10. Shear stresses of the beam element

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图 11 厂房底部最大剪应变分布图

Figure 11. Distribution of maximum shear strain in the base

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表 1 材料参数

Table 1. Parameters of the materials

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