- 摘 要
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(1 綠地集團技術(shù)管理產(chǎn)品研發(fā)部， 上海 200023； 2 同濟大學(xué)建筑設(shè)計研究院(集團)有限公司； 上海 200092； 3 同濟大學(xué)建筑工程系， 上海 200092)
[摘要] 被動消能減震技術(shù)在高層建筑中得到廣泛使用，屈曲約束支撐是一種高效的被動消能減震技術(shù)。屈曲約束支撐不僅能夠提供給結(jié)構(gòu)足夠的剛度，并且能夠在屈曲之后以其金屬的軸向變形耗散地震輸入能量。超高層建筑結(jié)構(gòu)性能化抗震設(shè)計通常使得屈曲約束支撐在小震下保持彈性以提供足夠的剛度，而在中震和大震下進入屈服，從而為結(jié)構(gòu)提供附加阻尼，減少其他構(gòu)件的塑性變形，使得主體結(jié)構(gòu)構(gòu)件可以得到優(yōu)化。本研究以某300m帶環(huán)帶桁架的支撐框架核心筒超高層建筑進行屈曲約束支撐布置設(shè)計，對比不同屈曲約束支撐布置方案，并探討了屈曲約束支撐在超高層建筑中的使用效果以及主體結(jié)構(gòu)優(yōu)化設(shè)計方法。
[關(guān)鍵詞] 超高層建筑； 屈曲約束支撐； 優(yōu)化設(shè)計
中圖分類號：TU973 文獻標(biāo)識碼：A
作者簡介：朱川海，博士，高級工程師，Email：troyzhu@139.com。
Optimal design for buckling-restrained braces in super tall building structures
Zhu Chuanhai1, Zhao Xin2, Zhang Hongwei3
(1 Greenland Group, Shanghai 200023,China；2 Tongji Architectural Design (Group) Co. , Ltd. , Shanghai 210096, China;
3 Department of Building Engineering, Tongji University, Shanghai 210096, China)
Abstract: The technology of passive energy dissipation systems is widely applied in the design of high-rise buildings. Buckling-restrained brace (BRB) is one of the passive energy dissipation systems. BRBs are not only capable of providing lateral stiffness but also can dissipate dynamic energy through the metallic axial deformation. BRBs will remain elastic under frequent earthquake and dissipate energy under medium and rare earthquake. With the installation of BRBs, the sectional dimension of other structural components can be optimized. A super tall building with belt truss frame core-wall structural system is exemplified to show the optimal design effectiveness of BRBs. Finally different arrangements of BRBs will be compared and optimized, and several optimal design criteria for BRBs in super tall building structures are obtained according to the study.
Keywords: super tall building; buckling-restrained brace; optimal design
參 考 文 獻
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