泥石流冲击荷载下拦挡坝的动力响应分析

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摘要选取典型的泥石流冲击荷载，把钢筋混凝土拦挡坝简化成悬臂梁，建立其动力偏微分方程，运用数学物理方程中的变量分离法和结构动力学中的振型叠加法求得动力偏微分方程的解析解，最后根据材料力学得到相应的应力以及应变。算例分析表明解析解是可靠的，且在拦挡坝的坝顶处有最大的位移，为实际工程力学计算提供一种思路。

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	周勇1
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	刘贞良1
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	王秀丽1
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	周凤玺1
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关键词 ：泥石流拦挡坝, 冲击荷载, 动力响应分析

Abstract：Selected the typical impact load of debris flow, and forward the ferroconcrete Dam against debris flow was reduced to a cantilever beam, set up the dynamic partial differential equation, and then used the variable separation method in mathematical physics equation and modal superposition method in the structural dynamics, obtained dynamic solution of partial differential equation. According to the mechanics of materials to, we can get the corresponding stress and strain. The example analysis shows that the analytical solution of dynamic equation is reliable, and in Dam against debris flow has the largest displacement of dam crest, provides an ideal for practical engineering mechanics calculation.

Key words： Dam against debris flow impact load analysis dynamic response

收稿日期: 2013-11-01 出版日期: 2015-04-25

引用本文:

周勇1，2，刘贞良1，2，王秀丽1，2，周凤玺1，2. 泥石流冲击荷载下拦挡坝的动力响应分析[J]. 振动与冲击, 2015, 34(8): 117-120.
ZHOU Yong1,2, LIU Zhen-liang1,2, WANG Xiu-li1,2, ZHOU Feng-xi1,2. The analysis dynamic response of Dam against debris flow under the impact load. JOURNAL OF VIBRATION AND SHOCK, 2015, 34(8): 117-120.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2015/V34/I8/117

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