(1 绿地集团技术管理产品研发部， 上海 200023； 2 同济大学建筑设计研究院(集团)有限公司； 上海 200092； 3 同济大学建筑工程系， 上海 200092)

[摘要]  被动消能减震技术在高层建筑中得到广泛使用，屈曲约束支撑是一种高效的被动消能减震技术。屈曲约束支撑不仅能够提供给结构足够的刚度，并且能够在屈曲之后以其金属的轴向变形耗散地震输入能量。超高层建筑结构性能化抗震设计通常使得屈曲约束支撑在小震下保持弹性以提供足够的刚度，而在中震和大震下进入屈服，从而为结构提供附加阻尼，减少其他构件的塑性变形，使得主体结构构件可以得到优化。本研究以某300m带环带桁架的支撑框架核心筒超高层建筑进行屈曲约束支撑布置设计，对比不同屈曲约束支撑布置方案，并探讨了屈曲约束支撑在超高层建筑中的使用效果以及主体结构优化设计方法。

[关键词]  超高层建筑； 屈曲约束支撑； 优化设计

中图分类号：TU973        文献标识码：A

作者简介：朱川海，博士，高级工程师，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

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