UDEC中Saeb-Amadei节理本构模型的二次开发

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摘要控制岩体水力学特性的节理在常法向应力边界条件和常法向刚度边界条件2种情况下的力学变形行为不同。由于Saeb-Amadei节理模型考虑了节理法向变形对节理剪切变形及剪胀的影响及节理吻合度对结果的影响，且适用于常法向应力边界与常法向刚度边界。引入Saeb-Amadei节理模型以研究裂隙岩体水力耦合特性。结合UDEC中的User-defined joint constitutive models 接口，采用C++语言，编写Saeb-Amadei节理模型的数值嵌入程序Userjsa，进行单裂隙岩体的数值直剪和数值单轴压缩试验，对比计算结果与解析结果表明，计算结果与解析结果有很好的一致性，验证了数值嵌入程序Userjsa的正确性，为裂隙岩体水力耦合计算提供基础。

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	吴月秀1
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关键词 ：岩石力学, Saeb-Amadei节理模型, 常法向应力边界条件, 常法向刚度边界条件, 直剪试验, 单轴压缩试验

Abstract：The mechanical behavior of fracture under the condition of constant normal load(CNL) is different from that of constant normal stiffness(CNS). The effect of joint normal deformation on joint shear deformation and joint dilation is considered in the Saeb-Amadei joint constitutive model，as well as the influence of joint match. And the Saeb-Amadei joint model is suitable for CNS and CNL condition. Thus，the Saeb-Amadei joint is adopted to study the HM coupling behavior of fractured rock mass. Through the User-defined joint constitutive models of UDEC，the implementation program named Userjsa is compiled with C++ language. Then，the numerical uniaxial compression test and direct shear test are simulated. By comparing the numerical results with the analytical results，the implementation program is verified. It is proved that the implementation joint model can be used to study the HM coupling behavior of fractured rock mass.

Key words： rock mechanics Saeb-Amadei joint model constant normal load(CNL) boundary condition constant normal stiffness(CNS) boundary condition direct shear test uniaxial compression test

引用本文:

吴月秀1，2，刘泉声1，2，卢海峰1，李金兰1. UDEC中Saeb-Amadei节理本构模型的二次开发[J]. 岩石力学与工程学报, 2012, 31(S1): 3022-3030.
WU Yuexiu1，2，LIU Quansheng1，2，LU Haifeng1，LI Jinlan1. IMPLEMENTATION OF SAEB-AMADEI MODEL INTO USER-DEFINED JOINT CONSTITUTIVE MODEL IN UDEC. , 2012, 31(S1): 3022-3030.

链接本文:

https://rockmech.whrsm.ac.cn/CN/Y2012/V31/IS1/3022

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