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Modeling of safety evaluation of super-large deep-water group pile foundation

Abstract In order to make a reasonable security assessment for super-large pile-group foundation in deep water during the construction and operating period, a combination of safety monitoring technology and mathematical method was adopted as modeling the security assessment as per the existing observation results. Based on the analysis of the content of safety monitoring, we firstly fused various sensors to a single target state estimation. Secondly, according to the national standards, industry standards and the existing research and practice experience, we analyzed and determined the set of safety evaluation factor, simultaneously constructed the membership function of each factor with different characteristics and establish the weight of each one. Thirdly, we evaluated result by optimal decision fusion. It comes out that this model can be a good judge method for safety of Super-large pile-group foundation in deep water.