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由于影响岩溶区桩基稳定性的因素很多,不同的参数分布等条件都会对岩溶区的稳定性产生重要的影响,以大连经济技术开发区海上体育休闲广场为依托,选取了岩溶区典型的力学模型来分析不同影响参数对岩溶区桩基工程稳定性的影响。首先采用量纲分析的方法从众多影响因素中提取关键无量纲量,通过对关键无量纲量的改变,使用数值模拟的方法提取适当判别溶洞稳定性指标的变化规律,从而得出各关键参数对溶洞稳定性的影响程度。运用灰关联分析方法对影响岩溶区稳定性的各因素进行敏感性分析,得到各影响因素的关联次序,从而确定各影响因素的主次关系,为岩溶区稳定性评价和岩溶区桩基工程的勘察、设计及施工提供可靠的理论依据。
Due to many factors affecting the stability of pile foundation in karst area, different parameters such as the distribution of conditions will have a significant impact on the stability of karst area to Dalian Economic and Technological Development Zone, offshore sports and leisure plaza as the basis, selected karst typical mechanics Model to analyze the influence of different influence parameters on the stability of pile foundation in karst area. Firstly, the dimensionless analysis method was used to extract the key dimensionless variables from many influencing factors. By changing the key dimensionless quantities and using the numerical simulation method to extract the variation regularity of the cave stability index, the key parameter pairs The degree of influence of cave stability. Using the gray relational analysis method to analyze the sensitivity of each factor affecting the stability of the karst area and getting the order of correlation of the influencing factors so as to determine the primary and secondary relationships among the influencing factors, and to evaluate the stability of the karst area and the pile foundation engineering in karst area Survey, design and construction provide a reliable theoretical basis.