[1]段留省,苏明周.高强钢组合K形偏心支撑钢框架抗震性能分析[J].西安建筑科技大学学报:自然科学版,2015,(01):46-50+61.[doi:10.15986/j.1006-7930.2015.01.009]
 DUAN Liusheng,SU Mingzhou.Seismic behavior analysis of high strength steel composite K-type eccentrically braced frames[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2015,(01):46-50+61.[doi:10.15986/j.1006-7930.2015.01.009]
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高强钢组合K形偏心支撑钢框架抗震性能分析()
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西安建筑科技大学学报:自然科学版[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2015年01期
页码:
46-50+61
栏目:
出版日期:
2015-02-28

文章信息/Info

Title:
Seismic behavior analysis of high strength steel composite K-type eccentrically braced frames
文章编号:
1006-7930(2015)01-0046-05
作者:
段留省;苏明周;
长安大学建筑工程学院;西安建筑科技大学土木工程学院;西部建筑科技国家重点实验室(筹);
Author(s):
DUAN Liusheng1 SU Mingzhou23
1. School of Civil Engineering, Chang’an University, Xi’an 710061, China;2. School of Civil Engineering, Xi’an Univ. of Arch. & Tech., Xi’an 710055, China;3. State Key Laboratory of Architecture Science and Technology in West China(XAUAT) , Xi’an 710055, China
关键词:
高强钢偏心支撑抗震性能用钢量非线性有限元
Keywords:
high strength steel eccentrically braced frame seismic performance steel consumption nonlinear finite element method
分类号:
TU393.2
DOI:
10.15986/j.1006-7930.2015.01.009
文献标志码:
A
摘要:
偏心支撑钢框架设计时需要通过内力放大系数调整梁柱截面以抵抗耗能梁段的应变硬化效应,导致用钢量增大和节点连接困难.根据"相对强弱"的抗震思想,可将高强度钢材引入基本处于弹性的钢框架部分,耗能梁段采用屈服点较低钢材,形成高强钢组合偏心支撑钢框架.为研究这种新型结构的抗震性能和用钢量优势,采用ANSYS对2榀单层剪切屈服机制的K形偏心支撑钢框架进行了非线性有限元分析,其中考虑材料非线性和几何非线性.结果表明在相同应力比设计原则下,对同一耗能梁段采用高强钢框架可以节省约14%的用钢量,而抗震性能与普通偏心支撑钢框架相当.
Abstract:
In eccentrically braces frame design, the section dimension of frame is always adjusted by internal force amplify factor to resistant the strain hardening effect of link, which lead to the steel consumption and difficulty of joint. According to the seismic philosophy of “relative strength”, the high strength steel can be used for frames and braces, and the low yield steel can be used for link. This new structure is called high strength steel composite eccentrically braced frames. In order to study the seismic behavior of the new structure and save steel, 2 monotonic loading and 2 cyclic loading were performed by nonlinear finite element method analysis in ANSYS, including tests on 1/2 scaled shear yielding specimens with K types braces. The material and the geometry nonlinearities were considered simultaneously. The result show that about 14% steel is saved by using high strength steel frame under condition of identical link and same stress ratio. Differences of the seismic performance between the new and the ordinary EBF are very small.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2014-03-28 修改稿日期:2015-02-02
基金项目:国家自然科学基金资助项目(51178382)
作者简介:段留省(1985-),男,博士,主要从事钢结构稳定、抗震与新型钢结构体系的研究.E-mail: duanliusheng@126.com
更新日期/Last Update: 1900-01-01