巨子型有控结构体系中附加柱的连接方式

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振动与冲击 ›› 2012, Vol. 31 ›› Issue (11) : 78-81,1.

论文

巨子型有控结构体系中附加柱的连接方式

李涛，张洵安

作者信息 +

The Connection mode between the additional column and mega-beam on the MSCSS

Li Tao,Zhang Xun’an

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文章历史 +

摘要

附加柱是巨子型有控结构体系（Mega-sub controlled structural system，即MSCSS）中的必要组成部分，附加柱的连接方式对MSCSS的动力特性有较大影响。结合概率密度演化理论及切球选点方法，通过对巨子型有控结构体系在结构参数及地震激励均为随机变量情况下进行附加柱应力响应计算，得到了附加柱应力响应的概率密度演化曲面，对不同附加柱与巨型梁连接方式下的附加柱应力进行了研究。结果表明，释放附加柱的水平约束，可以有效地降低附加柱应力响应的均值及标准差，整体提高巨子型有控结构体系的抗震能力；而附加柱应力概率密度的不均匀性表明，即使巨子型有控结构体系受到平稳随机地震作用激励，其附加柱应力响应也将表现出明显的非平稳性。

Abstract

Additional columns are the main components of the Mega-sub controlled structural system (MSCSS). Employing the probability density evolution theory and strategy of selecting points via sphere of contact, the stress responses of the additional column were analyzed under seismic load. The parameters of the structure and seismic excitation were considered as the stochastic variables during the computation process. The probability density evolution curve surface was presented and the effects with the different connection modes between the additional column and mega-beam were also investigated. The results show that the mean and standard deviation of the additional column stress are reduced effectively by releasing the horizontal restraint between the additional column and mega-beam. This connection mode enhances the aseismatic ability of the integral MSCSS; the non-homogeneity of the probability density of the additional column stress demonstrates that the stress responses of the additional column present obvious non-stationary characteristic, even if the MSCSS is subjected to the stationary stochastic seismic excitation.

导出引用

李涛;张洵安. 巨子型有控结构体系中附加柱的连接方式[J]. 振动与冲击, 2012, 31(11): 78-81,1

Li Tao;Zhang Xun’an . The Connection mode between the additional column and mega-beam on the MSCSS[J]. Journal of Vibration and Shock, 2012, 31(11): 78-81,1