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岩石弹塑性损伤参数反演在地铁车站中的应用

DOI: 10.16411/j.cnki.issn1006-7736.2015.03.020, PP. 109-114

Keywords: 损伤模型,参数反演,本构模型,差异进化算法,洞桩法,反分析

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Abstract:

针对大多数弹塑性损伤模型存在涉及参数多且不易确定的问题,使用C++语言编制弹塑性损伤本构求解程序并将其集成到自主开发的基于差异进化算法(DifferentialEvolution,DE)的智能参数反分析程序中,通过算例验证了本构模型的准确性及智能反演程序的可行性.在此基础上,将该程序应用于大连地铁洞桩法车站的损伤参数反演工作中,通过第一个施工工序的监测位移反演损伤参数,并用反演所得参数对后续施工工序进行有限元模拟.研究结果表明:该方法及程序具有较好的可靠性,能够解决实际工程问题,对现场施工有较好的指导作用.

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