【摘要】 地下洞室围岩弹塑性反演分析方法是长期以来反分析理论研究的一个难题。文中详细分析了实施弹塑性反分析所存在的3个难点,并针对这3个问题,假定围岩是理想弹塑性介质,通过参数对位移的灵敏度分析,现场实测将弹塑性位移进行分离,从而探索围岩弹塑性反分析的新途径;之后阐述了本文采用的仿真反分析的概念、实施思路及流程;最后说明了该方法的应用与检验思路,结合工程实例证明该方法的可靠性。更多还原

【Abstract】 The method of elastoplastic back analysis for the tunnel is a difficult problem in the study of back analysis for a long time.Three puzzles in conducting elastoplastic back analysis are analyzed.Moreover,aimed at these problems,a new way is searched by presuming that rock is ideal elastoplastic material,studying the parameter sensitivity to the displacement in tunnel,and dividing the measured displacement into elastic part and plastic part.Then,the concept,the method and procedures of emulating back analysis is illustrated.Lastly,the thoughtway of applying and testing this method is demonstrated,and the reliability is proved with the engineering projects.更多还原