| 泥石流冲击作用下框架结构的破坏机理 |
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| 引用本文： | 狄生奎,李健,张得强.泥石流冲击作用下框架结构的破坏机理[J].山地学报,2012(2):201-206. |
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| 作者姓名： | 狄生奎 李健 张得强 |
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| 作者单位： | 兰州理工大学土木工程学院 |
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| 基金项目： | 甘肃省科技支撑项目(No.0708GKCA002);甘肃省自然科学基金暨中青年科技基金项目(No.3ZS062-B25-031)~~ |
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| 摘 要： | 推导了泥石流冲击力作用下结构的最大位移,可以看出最大位移与泥石流的密度、速度,结构的周期、刚度有关。通过对泥石流冲击力的简化,利用有限元软件模拟二层框架结构在泥石流冲击作用下的响应,得到了底层框架柱的位移时程曲线,并对底层柱破坏形态进行了分析。把结构理论最大位移与模拟最大位移进行比较,得到了结构最大位移限值,为建筑物抵抗泥石流冲击设计提供了参考。
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| 关 键 词： | 泥石流 结构 冲击力 位移 应力 |
Damege Mechanism of Frame Structures Impacted by Debris Flow |
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| DI Shengkui,LI Jian,ZHANG Deqiang.Damege Mechanism of Frame Structures Impacted by Debris Flow[J].Journal of Mountain Research,2012(2):201-206. |
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| Authors: | DI Shengkui LI Jian ZHANG Deqiang |
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| Institution: | (School of Civil Engineering,Lanzhou University of Technology,Lanzhou 730050,China) |
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| Abstract: | This paper deduces structure’s maximal displacement impacted by the debris flow.We can see that the maximum displacement is relevant to the density and velocity of debris flow,the cycle and stiffness of structure.By simplified the impact force of debris flow,using the finite element software to simulate the action of the two-story frame structure impacted by debris flow.The displacement process curve of the bottom of the frame column was obtained and analyze the ground floor column failure form.By compared between structure’s theory maximal displacement and simulation maximal displacement,the limitation of the maximum displacement is obtained.It can provide a design reference for building impacted by debris flow. |
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| Keywords: | debris flow structure impact force displacement stress |
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