楼板施工方案对某工程大跨度弧形桁架的影响

发布时间：2018-01-15 07:33

本文关键词：楼板施工方案对某工程大跨度弧形桁架的影响　出处：《建筑结构》2016年S2期 　论文类型：期刊论文

【摘要】：某纪念馆工程为双环形布置的2层钢框架结构,柱网呈环状布置,局部抽掉较多柱子形成大跨度弧形桁架结构,其受力较为复杂,计算发现不同的楼板施工方案对弧形桁架受力影响较大。通过采用ETABS软件对不同楼板刚度下的大跨度弧形桁架进行分析,结果表明楼板形成刚度后对大跨度弧形桁架的受力有较大的改善,因此确定楼板施工方案为先浇筑楼板混凝土并达到强度后再拆除桁架下的临时支撑。采用ABAQUS软件对应力较大处楼板进行有限元分析,结果表明楼板钢筋应力满足要求,楼板能够满足正常使用要求。
[Abstract]:A memorial hall project is a two-story steel frame structure with double annular arrangement. The column net is arranged in a ring shape, and a large span arc truss structure is formed by pulling out more columns locally, and the force is more complicated. It is found that different floor construction schemes have great influence on the stress of the arc truss. The large span arc truss with different floor stiffness is analyzed by using ETABS software. The results show that the stiffness of floor slab can greatly improve the stress of long-span arc truss. Therefore, it is determined that the construction scheme of floor slab is the temporary support under the truss after pouring the floor concrete first and then removing the truss. The finite element analysis of the floor with high stress is carried out by using ABAQUS software. The results show that the stress of slabs can meet the requirements and the slabs can meet the requirements of normal use.
【作者单位】：天津市建筑设计院;
【分类号】：TU758.11;TU391
【正文快照】： 0前言任何建筑都是由一砖一瓦、一梁一柱的构件组成,将这些独立的构件按照一定的顺序组合在一起就是施工过程,不同的施工过程(顺序)也就形成了不同的施工方案。因此,同样一座建筑,施工的方案不同,其结构受力构件的受力过程(受力顺序)和内力大小也会不同,使得结构设计的过程可

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