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江阴市民水上活动中心采用新型阶梯式肋环型网格结构体系,建筑和结构设计达到和谐统一.首先对该结构的体系构成进行了简单介绍,分析其受力机理.这种结构体系的静动力性能介于单、双层网壳之间,剪切变形与剪切内力较大.本文分析了结构在小震、中震作用下的反应,确保结构保持中震弹性.为评价节点刚度对承载力的影响,本文分析了考虑节点刚度折减后的结构性能.线性稳定性计算分析了结构的薄弱部位,通过非线性稳定性分析得到的结构荷载位移曲线具有明显的强化特性.
Jiangyin Citizens’ Aquatic Center adopts a new type of stepped rib ring grid structure system, and the design of the structure and structure reach a harmonious unity.Firstly, the system structure of the structure is briefly introduced and its stress mechanism is analyzed. The static and dynamic The performance is between the single and double reticulated shells, and the internal forces of shear deformation and shearing are large.This paper analyzes the response of the structure under the action of small earthquakes and medium earthquakes to ensure that the structure maintains the mid-spring elasticity.In order to evaluate the stiffness of joints, The paper analyzes the structural performance after considering the node stiffness reduction.The weak part of the structure is analyzed and calculated by the linear stability analysis.The structural load displacement curve obtained by the nonlinear stability analysis has obvious strengthening characteristics.