基于空腔楼盖的新型耗能减震装置参数优化

来源:建筑界编辑:黄子俊发布时间:2019-05-08 09:14:53

[摘要] 李书进+王见祥+孙磊+孔凡对一种基于空腔楼板的新型耗能減震装置的参数优化问题进行了探讨;对基于拉格朗日变分原理推导出的装有该装置的受

李书进+王见祥+孙磊+孔凡

对一种基于空腔楼板的新型耗能減震装置的参数优化问题进行了探讨;对基于拉格朗日变分原理推导出的装有该装置的受控结构非线性运动方程进行统计线性化处理,以结构的水平位移方差最小化为优化准则,应用定点理论方法对该装置的参数优化问题展开研究;利用蒙特卡洛模拟方法对不同情况下受控结构的减震效果进行对比分析,验证了该方法的有效性。结果表明:采用所提方法能有效进行耗能减震装置的参数优化设计,为该装置的推广应用提供依据。

关键词:耗能减震装置;参数优化;定点理论;蒙特卡洛模拟;空腔楼盖

中图分类号:TU352.1 文献标志码:A

文章编号:1673-2049(2017)02-0010-08

Abstract:The parameter optimization of a new energy dissipation device based on hollow floor slab was discussed. The nonlinear motion equation of the controlled structure with the device based on the Lagrange variational principle was treated using statistical linearization method. Then, taking the device as object, the structural horizontal displacement variance minimization was taken as the optimization criterion, the parameter optimization problem of the device was studied using the fixed point theory. The Monte Carlo simulation method was used to compare the damping effects of the controlled structure under different conditions, and the effectiveness of the proposed method was verified. The results show that the proposed method can be used to optimize the parameters of energy dissipation device effectively, and provides the basis for the application of the device.

Key words:energy dissipation device; parameter optimization; fixed point theory; Monte Carlo simulation; hollow floor slab

0引 言

近年来,装配式建筑在中国得到了极大的推广,为减少现场作业量和构件自重,各种空腔楼盖体系也在工程中得到广泛应用[1-2]。利用分布于这种楼盖体内的大量空腔,本文提出了一种新型滚动式调谐质量阻尼器(TRMD)耗能减震装置,并对其工作机理和减震性能进行了初步探讨[3-4]。该装置具有制作方便、布置灵活且不影响结构使用功能等优点。

滚动式调谐质量阻尼器是一种基于传统调谐质量阻尼器(TMD)研究开发出来的减震装置,属于被动控制技术,为使该装置控制效果最优,需要对其参数进行优化设计。

楼盖,空腔,耗能

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