[1]段留省,苏明周,李慧.高强钢组合Y形偏心支撑钢框架抗震性能与震后修复分析[J].西安建筑科技大学学报(自然科学版),2018,50(04):506-512.[doi:10.15986/j.1006-7930.2018.04.007]
　DUAN Liusheng,SU Mingzhou,LI Hui.Seismic behavior and retrofit analysis of the high strength steel composite Y-type eccentrically braced frames[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2018,50(04):506-512.[doi:10.15986/j.1006-7930.2018.04.007]
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高强钢组合Y形偏心支撑钢框架抗震性能与震后修复分析()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
50
期数:
2018年04期
页码:
506-512
栏目:
出版日期:
2018-08-31

文章信息/Info

Title:
Seismic behavior and retrofit analysis of the high strength steel composite Y-type eccentrically braced frames
文章编号:
1006-7930(2018)04-0506-07
作者:
段留省1; 苏明周2; 李慧3
( 1. 长安大学 建筑工程学院,陕西 西安 710061 ;2. 西安建筑科技大学 土木工程学院,陕西 西安 710055 ;3. 恒大地产集团西安有限公司,陕西 西安 710000 )
Author(s):
DUAN Liusheng1;  SU Mingzhou2;  LI Hui3
(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. Evergrande Real Estate Group Co., Ltd. Xi ’an Branch, Xi’an 710000, China)
关键词:
偏心支撑; 塑性转角; 层间侧移角; 震后修复; 耗能梁段长度
Keywords:
Y-type eccentrically braced frame;  plastic rotation angle;  storey drift angle;  seismic retrofit;  link length
分类号:
TU392.1
DOI:
10.15986/j.1006-7930.2018.04.007
文献标志码:
A
摘要:
为研究高强钢组合Y形偏心支撑钢框架这种新型结构体系的抗震性能和震后可修复性，在试验的基础上对3种组合Y形偏心支撑钢框架进行有限元分析.采用ANSYS软件建模，3-D实体单元划分网格，考虑材料非线性和几何非线性，研究变量为耗能梁段长度.结果表明：耗能梁段长度对试件的初始刚度影响较大，对极限承载力影响较小；耗能梁段长度对破坏模式影响较大，在位移角相同的条件下，短耗能梁段的剪切变形发展更充分，长耗能梁段将导致钢框架节点弯矩大幅增长，使得框架梁先于梁段发生破坏，震后修复难度增加.为保证高强钢组合Y形偏心支撑钢框架的耗能梁段弹塑性变形发展充分，作为第一道抗震防线首先发生破坏，建议耗能梁段长度与层高的比值不宜大于0.25
Abstract:
High strength steel composite Y-type eccentrically braced frame is a new structure system. In order to study the seismic behavior and the retrofit of this system, based on the experimental research, 3 HEY specimens were analyzed by nonlinear finite element method. The 3-D solid elements were adopted in the finite element model by the ANSYS software and the geometric and material nonlinearities were calculated simultaneously. Result showed that the link length had greatly influence on the initial stiffness and failure modes, but had little influence on the ultimate load capacity. At the same drift, the shear yielding deformation is well developed in the shorter link. As the link length increases, the moment of the frame joint is larger, which will lead the frame beam fracture before the link damaged, and the seismic retrofitting became hard to complete. For excellent performance of the link and easy seismic retrofitting, the ratio of the link length to the height of the high strength steel composite Y-type eccentrically braced frame is suggested to be no more than 0.25.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2017-11-01修改稿日期:2018-07-05
基金项目:国家自然科学基金项目(51178382，51708038)；陕西省自然科学基金项目（2018JQ5016）；中央高校基本科研业务费项目（300102288102）
第一作者:段留省（1985-），男，博士，工程师，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: 2018-09-11