摘要
基于鼠H∞范数提出了偏心结构利用调液阻尼器减震控制的一种新的优化设计方法,该方法将优化目标取为从地震动到结构响应的传递函数的H∞范数,利用遗传算法来对阻尼器的相关参数进行优化。这种优化方法无需求解结构运动方程,所得到的阻尼器最优参数也不依赖于特定的地震动。用一个12层的偏心结构作为算例进行优化计算,结果表明:利用该文提出的优化方法所得到的阻尼器最优参数,在不同场地条件下对偏心结构的扭转耦联振动均具有明显的减震效果。
An innovative optimal design method based on H∞ norm is presented for the seismic response controlof eccentric building structures using liquid dampers. The H∞ norm of the transfer tunctlon trom me grouna motion to the structural response is selected as the optimal objective. A numerical optional procedure is carried out by using Genetic Algorithms (GAs) in order to reach an optimal solution. The solution of equation of motion for the control system is unnecessary in the optimal design process and the obtained optimal parameters of dampers are not dependent on the ground motion records. A 12-story eccentric structure is selected as an example. The results showed that the liquid dampers with optimal parameters acquired through the proposed method can effectively reduce the structural response in different site conditions.
出处
《工程力学》
EI
CSCD
北大核心
2011年第11期202-209,共8页
Engineering Mechanics
基金
国家自然科学基金项目(50708016)
国家“十一五”科技支撑计划重大项目(2006BAJ03A03)
高等学校学科创新引智计划项目(B08014)
地震行业科研专项项目(200808074)