温度应力对螺栓球网壳结构的影响分析

Analysis of Influence of Temperature Stress on Bolted Ball Reticulated Shell Structure

摘要: 螺栓球网壳结构与其支承结构之间的相互作用影响往往十分复杂，因此对结构模型分析时应考虑两者之间相互作用的影响而进行整体建模分析。对于螺栓球网壳结构除需进行常规分析及整体分析外，还需要做温度应力的补充分析。本文利用有限元分析软件Midas gen对温度应力作用下不同螺栓球网壳结构长度(120 m、168 m、200 m)、不同下部钢筋混凝土结构高度(3 m、6 m、9 m)、不同下部支承结构(固定铰支座、弹性支座、整体模型)的螺栓球网壳结构模型进行对比分析。通过对比不同模型及温度应力作用对网壳结构的影响，选择出合适的支座结构以及支座弹性刚度来减少或者消除由温度作用对结构产生的不利影响。

Abstract: The interaction between the bolt-and-ball shell structure and its supporting structure is often very complicated. Therefore, the overall modeling analysis should be considered when considering the interaction between the two. In addition to the routine analysis and overall analysis of the bolt-and-ball shell structure, a supplementary analysis of the temperature stress is required. In this paper, the finite element analysis software Midas gen is used to measure the length of different bolt-and-wire shell structures (120 m, 168 m, 200 m), different lower reinforced concrete structures (3 m, 6 m, 9 m) and different lower support structures (fixed hinges) under temperature stress. The bolt ball net shell structure model of the seat, the elastic support and the overall model are compared and analyzed. By comparing the influence of different models and temperature stress on the reticulated shell structure, the appropriate bearing structure and the elastic stiffness of the bearing are selected to reduce or eliminate the adverse effects of temperature on the structure.