带加强层框架-核心筒结构中单伸臂桁架刚度比的合理取值

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振动与冲击 ›› 2013, Vol. 32 ›› Issue (15) : 63-70.

论文

带加强层框架-核心筒结构中单伸臂桁架刚度比的合理取值

林绍明，周云，邓雪松，吴从晓

作者信息 +

Rational stiffness of single outrigger trusses in frame-core structure with outriggers

LIN Shao-ming, ZHOU Yun, DENG Xue-song, WU Cong-xiao

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摘要

推导带加强层框架-核心筒结构顶层位移的简化计算公式，提取影响结构顶层位移
的刚度比特征参数：伸臂弯曲刚度比i、伸臂剪切刚度比g、外框架柱弯曲刚度比p。采用
ETABS软件建立一253.2m超高层结构模型，研究水平均布荷载和地震作用下结构的侧移、内力与i、g、p的相互关系。研究结果表明，采用刚度比特征参数i、g、p对结构侧向刚度进行优化是合理可行的，p对结构侧向刚度影响最大，其次是g，最小是i，其中i的取值不宜超过
0.6，g的取值宜控制在0.9～3.5区段之间，p的取值宜控制在1.3～4.6区段之间。

Abstract

The characteristic parameters of bending stiffness ratio i, shearing stiffness ratio g of outrigger trusses and bending stiffness ratio p of column were investigated in order to get the simplified calculation formula of structural roof displacement in frame-core structure with outriggers. The relationships among the structural roof displacement, internal forces and i, g, p under uniformly distributed loading and earthquake loading were studied through a 253.2-meter super-rise building using the software ETABS. The results show that i, g, p adopted for optimizing the structural lateral stiffness are reasonable and feasible, and p has the greatest influence on the structural lateral stiffness while the second is g and i has the smallest effect. As for the characteristic parameters,
i should not be bigger than 0.6, g should be 0.9～3.5, and p should be 1.3～4.6.

导出引用

林绍明;周云;邓雪松;吴从晓. 带加强层框架-核心筒结构中单伸臂桁架刚度比的合理取值[J]. 振动与冲击, 2013, 32(15): 63-70

LIN Shao-ming;ZHOU Yun;DENG Xue-song;WU Cong-xiao . Rational stiffness of single outrigger trusses in frame-core structure with outriggers[J]. Journal of Vibration and Shock, 2013, 32(15): 63-70