摘要
《高层建筑混凝土结构技术规程JGJ 3—2002》的稳定性规定与结构的重力荷载和重力的二阶效应有关,该规定建立在弹性分析的基础上,用构件承载力验算中的计算长度系数来保证结构的安全。该规定有一定的适用范围,未必能保证复杂的高层结构的安全性及其计算上的准确性。文中结合腾讯大厦复杂高层设计实例,对整个结构进行线性和非线性整体稳定性分析,提出复杂高层应进行考虑二阶效应的非线性整体稳定分析,分析结果可作为规程的比较和补充,以确定结构的安全与可靠。
Based on the elastic analysis of the gravity case and its second-order effects, the effective length factor in capacity design was employed to guarantee the safety of tall buildings in the stability regulation of The Technical Specification for Concrete Structures of Tall Buildings （ JGJ 3--2002 ）. The limitation of the stability regulation limits its application for complex tall buildings and the accuracy in calculation. In this paper, linear and nonlinear analysis of whole building was carried out for the Tencent Building as an example to show the limitation. A suggestion, that nonlinear stability analysis with the second-order effects should be conducted, is put forward to be a comparison and supplement of the specification for the safety and reliability of complex tall building.
出处
《结构工程师》
2008年第6期51-56,共6页
Structural Engineers
关键词
非线性屈曲分析
重力二阶效应
临界屈曲荷载
计算长度系数
nonlinear buckling analysis, gravity second-order effect, critical buckling load, effectivelength factor
