泵闸工程折线形底板基底应力分布特性分析

Analysis on Stress Distribution Characteristics of Folded-line Baseplate of Pump Gate Project

选取上海市已建成运行规模最大的排涝泵闸为例,采用材料力学法、材料力学与刚体平衡结合算法、有限单元法计算,研究了软土地区折线形底板基底应力在折点处的应力集中现象,分析得出折线形底板基底应力分布特性;通过对基底应力在不同上部荷载、折线倾角、地基弹模等影响因素下的敏感性分析,总结变化规律,为类似工程结构优化设计提供参考.

Taking a largest-scale drainage pump gate built for operation in Shanghai as an example,the material mechanics method,the combinatorial algorithm of material mechanics and rigid body balance,and the finite element method are used to calculate and study the stress concentration phenomenon of the base stress of folded-line baseplate in soft soil area is studied at the folded place.The stress distribution characteristics of base stress of the folded-line baseplate are analyzed ad obtained.Through the sensitivity analysis of the base stress under the different upper loads,the folded-line inclination,subgrade elastic modulus and other influencing factors,the change law is summarized,which provides a reference for the optimization design of similar engineering structures.