- 摘 要
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孟春光
（同濟(jì)大學(xué)建筑設(shè)計研究院，上海200092）[摘要] 本文提出了一種實(shí)用的減震結(jié)構(gòu)優(yōu)化設(shè)計方法，該方法通過預(yù)先設(shè)定消能結(jié)構(gòu)的位移角減震目標(biāo)，進(jìn)而由所需的附加阻尼比確定阻尼器的參數(shù)及數(shù)量，并以層間位移角為優(yōu)化目標(biāo)，采用“逐層搜索”的方法確定其安裝位置，最終可以達(dá)到預(yù)先設(shè)定的層間位移角減震目標(biāo)。隨后，運(yùn)用該方法對一幢實(shí)際方鋼管混凝土框架高層進(jìn)行了減震設(shè)計，提出了兩種不同減震目標(biāo)的減震方案，并結(jié)合阻尼器均勻布置方案對此結(jié)構(gòu)進(jìn)行了彈性及彈塑性計算，通過分析計算結(jié)果，對各種減震方案的減震效果進(jìn)行了對比，并研究分析了小震和大震下減震結(jié)構(gòu)的地震反應(yīng)特點(diǎn)。
[關(guān)鍵詞] 粘滯阻尼器；優(yōu)化設(shè)計；高層建筑；時程分析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
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