顶层高大空间混凝土排架柱层间位移限值研究  

Drift Limitation Study of Concrete Bent Frame Column in Top Floor Large Space

作　　者：李恺平[1] Li Kai-ping

机构地区：[1]广东省建筑设计研究院

出　　处：《建筑技术开发》2019年第10期104-105,共2页Building Technology Development

摘　　要：顶层高大空间混凝土排架柱受力和框架有所不同^通过对顶部框排架结构进行理论分析,并从实际的大跨度工程选取了12榀顶部框排架数据进行层间位移分析,研究了层间位移限值对裂缝宽度和顶层内隔墙性能的影响。研究结果表明,裂缝宽度和内隔墙随着层间位移角的增大而增大,增大实配钢筋超配系数或采用部份预应力设计可有效减小裂缝宽度;顶层内隔墙侧移角折减系数随着内隔墙高度系数的减小或下部框架转动影响系数的增大而减小。Concrete bent frame columns have different bearing characteristics from concrete frames. Research of drift limitation affecting on crack width and top floor inner partition wall performance, through theoretical analyses and 12 top floor frame - bent frame substructure data drift analyses,indicates that crack width increases when drift ratio increases. Crack width can be decreased dramatically through increasing reinforcement over rein factor or using partial prestressed design. Top floor inner partition wall drift ratio reduction factor decreases when inner partition wall height factor decreases or rotation influence coefficient of lower frame structures increases.

关 键 词：高大空间 排架柱 层间位移 

分 类 号：TU74[建筑科学—建筑技术科学]