Abstract

A lack of curvature reduces the out-of-plane stiffness of cable net façades. Therefore, they may experience large deformations and severe damage under heavy vertical loads such as earthquakes and wind. Axially movable smart supports are proposed for controlling structural vibrations by controlling tension of the cables. The equation of motion of the cable net, controlled by the smart support, is developed following a finite element method based program to solve the equation. The linear quadratic regulator control strategy is utilized to find the optimal control gain. The results show that smart supports, especially when connected to the central cables, can significantly control the vibrational amplitude of the structure.

摘要

缺乏曲率会降低索网立面的平面外刚度。因此，在地震和风等重垂直载荷下，它们可能会发生大变形和严重损坏。提出了可轴向移动的智能支架，用于通过控制索的张力来控制结构振动。由智能支架控制的索网运动方程是根据基于有限元方法的程序求解方程而开发的。利用线性二次调节器控制策略寻找最佳控制增益。结果表明，智能支架，尤其是连接到中央电缆时，可以显着控制结构的振动幅度。