某寺庙殿堂厅柱结构体系抗震性能分析

发布时间：2018-07-01 17:45

本文选题：寺庙厅柱结构 + 离心混凝土　；参考：《结构工程师》2014年06期

【摘要】：某清真寺拟建于高烈度地震设防地区(相当于8度区),其主体建筑祈祷大厅中心区由32根总高度约45 m钢筋混凝土柱构成,柱顶设钢制伞状柱头形成屋盖。厅柱设计外形为八角形、中空,最大截面尺寸1 620 mm,拟采用离心、分段预制,现场拼套接。厅柱全高基本无侧向约束,结构整体及分段预制拼接的空心柱体的抗侧力性能不详。采用有限元数值模拟方法,建立祈祷大厅整体结构计算模型,分别进行了小震作用下的线弹性分析及大震作用时的静力弹塑性分析,对结构整体抗震性能进行了分析评价。根据整体分析结果,进一步对受力最不利的厅柱单体进行局部受力性能详细分析,用非线性弹簧模拟拼接界面作用。计算结果表明:与无分段的混凝土完整柱相比,套接段套筒局部可能出现应力集中现象,进而导致厅柱抗侧承载能力降低。抗震设计应慎用预制套接构件。
[Abstract]:A mosque is intended to be built in a high-intensity seismic fortification area (equivalent to an 8-degree area). The central area of the main building of the prayer hall consists of 32 reinforced concrete columns with a total height of about 45 m. The roof of the mosque is made of steel umbrella-shaped columns on the top of the mosque. Hall column design for octagonal shape, hollow, maximum cross-section size of 1,620mm, proposed to use centrifuge, prefabricated, field splicing. There is no lateral constraint on the full height of the hall column, and the lateral force resistance of the hollow column with the whole structure and the segmented prefabricated splice is unknown. The finite element numerical simulation method is used to establish the calculation model of the whole structure of the prayer hall. The linear elastic analysis and the static elastic-plastic analysis of the whole structure under the action of the small earthquake and the strong earthquake are carried out, respectively, and the seismic behavior of the whole structure is analyzed and evaluated. According to the results of the whole analysis, the local mechanical behavior of the most unfavorable single chamber column is analyzed in detail, and the joint interface action is simulated by nonlinear spring. The calculation results show that the stress concentration may occur in the sleeve part of the sleeve section compared with the intact concrete column without segmenting, which leads to the decrease of the lateral bearing capacity of the hall column. Precast socket members should be carefully used in seismic design.
【作者单位】：同济大学土木工程防灾国家重点实验室;同济大学结构工程与防灾研究所;
【基金】：国家自然科学基金项目(91315301-4) 国家科技支撑项目(2012BAJ13B02)
【分类号】：TU352.11

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