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工程力学  2012 

非均匀荷载作用下层状岩体矩形裂隙力学特性分析

DOI: 10.6052/j.issn.1000-4750.2011.05.0279, PP. 108-113

Keywords: 间断位移方法,层状岩体,矩形裂隙,应力强度因子,非均匀荷载

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Abstract:

该文采用已发展的层状材料基本解对偶边界元方法,分析了层状裂隙岩体的力学特性。在分析无限域层状岩体中裂隙时,该对偶边界元方法退化为间断位移法。在建议的间断位移法中,只需沿裂隙一个面离散,采用9结点等参单元和非连续单元离散裂隙面。采用建议方法计算了作用有非均匀荷载矩形裂隙的间断位移。利用裂隙尖端附近的间断位移值,计算了应力强度因子。给出不同岩性组合情形时矩形裂隙应力强度因子的分布规律。

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