干钢1，沈金1，童根树1,2

 (1 浙江大学建筑设计研究院， 杭州 310028; 2 浙江大学建筑工程学院， 杭州 310058)

 

［摘要］介绍了一幢采用巨型单斜支撑的超高层钢结构的结构体系及其特点。两片单斜支撑之间设有一跨和三跨无支撑跨。分析结果表明，成对的单斜支撑能够承受竖向重力荷载，巨型单斜支撑节点处的楼层梁内有较大的压力和拉力。在水平力作用下，无支撑跨起着类似于弯曲型耗能连梁的作用，是这种结构体系具有优越的抗震性能的保证。另外，还介绍了该结构的设计要点。

［关键词］巨型单斜支撑； 钢结构； 高层建筑； 抗震设计

中图分类号：TU973.1+3      文献标识码：A      文章编号：1002-848X(2013)15-0015-04

 

Gan gang1, Shen Jin1, Tong Genshu1,2

 (1 Architecture Design and Research Institute of Zhejiang University, Hangzhou 310028, China; 2 Department of Civil Engineering, Zhejiang University, Hangzhou 310058, China)

 

Abstract: The structural system and its characteristics of a high-rise steel building are introduced. The building adopted a binate diagonal mega-bracing system in which two pieces of vertical trusses are in one vertical plane, between them there are one or three spans in which no bracing members are used. Analysis results revealed that this system may carry gravitational loads, and the beams at the bracing joints carry large axial forces which need to be taken care of in the design. Under earthquake action, the unbraced spans take the role of energy-dissipating members as in the EBF(Ecentricity bracing frame) system with long link beams. The beams in the unbraced spans need to design with reference to the requirements on EBF. Other design details are also provided.

Keywords: Mega-bracing; steel structure; high-rise building; seismic design

作者简介：干钢，博士，研究员，一级注册结构工程师，院总工，Email:gang@zuadr.com。

 

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