双排钢板桩围堰设计参数冗余度分析

为了研究双排钢板桩围堰系统稳定机理,在对围堰的回填料、宽高比、土体加固等因素进行参数敏感性分析的基础上,提出围堰体系冗余度的概念和表达方式,并对冗余度进行定量计算,结果与工程实际相吻合,验证了冗余度理论在双排钢板桩围堰工程中适用性及可行性。设计中可根据冗余度的分析,对影响围堰受力稳定的关键因素进行控制性设计。

Redundancy analysis of the design parameters for the double-row steel sheet-pile cofferdam

In order to study the stability mechanism of the double-row steel sheet pile cofferdam system,the finite element method is used to analyze the parameters sensitivity of the backfill,aspect ratio and soil reinforcement of the cofferdam.On this basis,the definition and expression of double-row steel sheet piles cofferdam supporting system redundancy are proposed.The redundancy results of quantitative calculation are consistent with the engineering practice.The above analysis verifies the applicability and feasibility of the redundancy theory in double-row steel sheet piles cofferdam engineering.The practical engineering can optimize the design of the key factors affected the stability of double-row steel sheet-pile cofferdam system according to the redundancy analysis.