孟春光
    （同济大学建筑设计研究院，上海200092）

[摘要] 本文提出了一种实用的减震结构优化设计方法，该方法通过预先设定消能结构的位移角减震目标，进而由所需的附加阻尼比确定阻尼器的参数及数量，并以层间位移角为优化目标，采用“逐层搜索”的方法确定其安装位置，最终可以达到预先设定的层间位移角减震目标。随后，运用该方法对一幢实际方钢管混凝土框架高层进行了减震设计，提出了两种不同减震目标的减震方案，并结合阻尼器均匀布置方案对此结构进行了弹性及弹塑性计算，通过分析计算结果，对各种减震方案的减震效果进行了对比，并研究分析了小震和大震下减震结构的地震反应特点。
[关键词] 粘滞阻尼器；优化设计；高层建筑；时程分析

Design method and case study of structures with viscous dampers
Meng Chunguang
(Architectural Design & Research Institute of Tongji University, Shanghai 200092, China)

Abstract: In this paper, an optimum design method of seismic energy- dissipated structure with viscous dampers is developed. In this method, the total number of dampers and its parameters can be determined by supplemental damping ratio which is depend on the optimization goal of inter-storey drift and the instaIlation locations of dampers are determined by a search method Then, two seismic energy-dissipation projects with different inter-story drift reduction ratio of a tall building of CFST frame structure are designed by the method. By the analysis of the structure under the two optimum projects and the other projects with dampers uniform installation, the seismic response of the structure with different energy-dissipation projects at frequent and seldom seismic intensity are investigated.
Keyword: viscous damper; optimization design; high-rise blulding; time-history analysis