钢框架柱抗爆简化分析模型研究

发布时间：2018-06-07 12:22

本文选题：钢框架柱 + 爆炸荷载　；参考：《天津大学学报(自然科学与工程技术版)》2017年02期

【摘要】：钢框架中其他构件对柱端的约束是影响柱子抗爆响应特征的重要参数.为得到钢框架中受爆柱的合理抗爆分析模型,简化抗爆分析过程,以数值计算为基础,分析钢框架其他构件和楼层分布质量对受爆柱端约束的影响规律,并在此基础上推导得到受爆柱端约束的理论计算方法.结果表明:在爆炸荷载作用下,求解柱端约束时,可仅考虑与柱端直接相连的梁柱构件的约束作用,而这些构件的远端可简化为固定端;楼层分布质量的存在可减小柱端的位移响应,柱端所处楼层的分布质量对柱子响应影响显著;通过将与受爆柱端直接相连的梁柱构件等效为柱端的横向、竖向和转动约束弹簧及集中质量,可得到柱端约束模型及其计算方法.最后,通过与实际钢框架抗爆的整体分析模型对比,验证了钢框架柱简化分析模型的正确性.
[Abstract]:The constraint of other components in steel frame on column end is an important parameter that affects the response characteristics of columns. In order to obtain a reasonable anti-explosion analysis model of columns in steel frame and simplify the process of anti-explosion analysis, based on numerical calculation, the influence of other steel frame members and floor distribution quality on the end restraint of exploding columns is analyzed. On this basis, the theoretical calculation method of the end restraint of the detonated column is derived. The results show that only the constraint of Liang Zhu members directly connected to the end of the column can be considered under the action of explosion load, and the distal end of these members can be simplified to a fixed end. The existence of floor mass distribution can reduce the displacement response of the column end, and the distribution quality of the floor at the end of the column has a significant effect on the column response, and the Liang Zhu component directly connected with the detonated column end is equivalent to the lateral response of the column end. The vertical and rotational constraint springs and concentrated mass can be used to obtain the column end constraint model and its calculation method. Finally, the correctness of the simplified analysis model of steel frame column is verified by comparing with the whole analysis model of steel frame anti-explosion.
【作者单位】：同济大学土木工程学院;济南大学土木建筑学院;同济大学土木工程防灾国家重点实验室;爱丁堡大学工程学院;
【基金】：国家自然科学基金重大国际合作项目(51120185001)~~
【分类号】：TU391

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