摘要
《高层建筑混凝土结构技术规程》(JGJ 3—2010)对整体稳定性计算做出了水平荷载按照倒三角形分布、考虑结构顶点位移相等而将结构折算为竖向悬臂受弯构件等假定,但这些假定和简化降低了计算精度。通过实际工程案例,对影响刚重比的各种因素进行了分析,研究了地下室层数、地下室侧向土的水平抗力系数、地下室嵌固端楼层刚度比、不同嵌固部位以及屋顶构架等影响因素,分析不同计算程序假定的合理性,确保结构整体稳定性安全可靠。
In the Technical specification for concrete structures of tall buildings(JGJ 3-2010),the assumptions of calculation of overall stability include inverted triangle distribution of horizontal load,converting the structure into vertical cantilever flexural member considering equivalent displacement of structure vertex.However,these assumptions and simplifications reduce the accuracy of calculation.Through practical engineering cases,various factors affecting rigidity-weight ratio were analyzed,such as the number of basement stories,horizontal resistance coefficient of basement lateral soil,stiffness ratio of embedded end floor of basement,different embedded parts and roof framework,etc.The rationality of different calculation program assumptions was analyzed to ensure the safety and reliability of the overall stability of the structure.
作者
谭光宇
张建华
张凤良
胡登先
李练兵
Tan Guangyu;Zhang Jianhua;Zhang Fengliang;Hu Dengxian;Li Lianbing(China Machinery International Engineering Design & Research Institute Co.,Ltd.,Changsha 410007,China)
出处
《建筑结构》
CSCD
北大核心
2019年第7期73-76,共4页
Building Structure
关键词
整体稳定性
刚重比
等效弹性侧向刚度
嵌固部位
屋顶构架
overall stability
rigidity-weight ratio
equivalent elastic lateral stiffness
embedded part
roof framework
