[1]王峥,李慎.不同支撑形式高强钢组合偏心支撑抗震性能研究[J].世界地震工程,2020,(03):080-92.
 WANG Zheng,LI Shen.Seismic performance of high strength steel frames with different eccentric braces based on PBSD method[J].,2020,(03):080-92.
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不同支撑形式高强钢组合偏心支撑抗震性能研究
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《世界地震工程》[ISSN:/CN:]

卷:
期数:
2020年03期
页码:
080-92
栏目:
出版日期:
2020-08-30

文章信息/Info

Title:
Seismic performance of high strength steel frames with different eccentric braces based on PBSD method
作者:
王峥1 李慎2
1. 西安铁路职业技术学院, 陕西 西安710600;
2. 西安理工大学 土木建筑工程学院, 陕西 西安 710048
Author(s):
WANG Zheng1 LI Shen2
1. Xi’an Railway Vocational and Technical Institute, Xi’an 710600, China;
2. School of Civil Engineering and architecture Xi’an University of Technology, Xi’an 710048, China
关键词:
偏心支撑钢框架高强钢基于性能设计方法不同支撑形式
Keywords:
eccentrically braced steel frameshigh strength steelperformance-based seismic designvariable brace
分类号:
TU391
摘要:
耗能梁段作为偏心支撑结构的耗能元件,在大震作用下通过弹塑性变形吸收地震能量,保护主体结构处于弹性受力状态。现行规范基于强度的设计理论,为了保证耗能梁段进入塑性或破坏,梁柱构件需要进行放大内力设计,导致截面过大,而且基于强度的设计方法很难保证结构的整体破坏状态。目前,抗震设计越来越重视基于性能的设计思想,该方法能够评估结构的弹塑性反应。对于高强钢组合偏心支撑,其中耗能梁段和支撑采用Q345钢,框架梁柱采用Q460或者Q690高强度钢材,高强钢不仅带来良好的经济效益,而且能够推广高强钢在抗震设防区的应用。利用基于性能设计方法设计了4种不同形式的高强钢组合偏心支撑钢框架,包括K形、Y形、V形和D形,考虑4层、8层、12层和16层的影响。通过Pushover分析和非线性时程分析评估该结构的抗震性能,研究结果表明:4种形式的高强钢组合偏心支撑钢框架具有类似的抗震性能,在罕遇地震作用下,几乎所有耗能梁段均参与耗能,而且层间侧移与耗能梁段转角沿高度分布较为均匀。其中:D形偏心支撑具有最大的抗侧刚度,但延性较差,而Y形偏心支撑的抗侧刚度最弱,但延性最佳。
Abstract:
The links are fuse members in eccentrically braced steel frames (EBFs), which enter inelastic phase before other structural members and dissipate the seismic energy. Based on the force-based seismic design method, damages and plastic deformations are limited to the links, and the main structural members are required tremendous sizes to ensure elastic with limited or no damage. Force-based seismic design method is very commonly used and is found in most design codes, but it is not easy to control the structural damage patterns. Nowadays, the performance-based seismic design concept is paid more attention because it can assess the inelastic response of the structure. Q345 steel is used for links and braces and Q460 steel or Q690 steel is used for columns and beams in the eccentrically braced steel frames, the applications of high strength steels not bring out better economy and higher strength, but also widen application prospects in seismic fortification zones. The structures with four types of eccentric braces are chosen in this study, including K-type, Y-type, D-type and V-type. Four types eccentrically braced frames with 4-storey, 8-storey, 12-storey and 16-storey, are designed by performance-based seismic design (PBSD) method. To evaluate the seismic performance of the structures, nonlinear static and dynamic analyses are performed. Analyses results indicated that all models have similar performance; all models designed by PBSD method have the same failure mode and story drift distribution under rare earthquake. The lateral stiffness of EBF with D-type eccentric brace is highest. The ductility of EBF with Y-type eccentric brace is best but with the lowest lateral stiffness.

参考文献/References:

[1] 彭观寿, 高轩能, 陈明华. 支撑布置对钢框架结构抗侧刚度的影响[J]. 工业建筑, 2008, 38(5):83-87. PENG Guanshou, GAO Xuanneng, CHEN Minghua. Effects of layout of bracing on lateral stiffness of steel frames[J]. Industrial Construction, 2008, 38(5):83-87. (in Chinese)
[2] 于海丰, 方斌. 钢框架-中心支撑双重体系抗弯框架设计方法研究[J]. 土木工程学报, 2013(S2):117-123. YU Haifeng, FANG Bin. Design method of moment frame for the dual system combining moment frame with braced frame[J]. China Civil Engineering Journal, 2013(S2):117-123. (in Chinese)
[3] MALLEY J O, POPOV E P. Shear link in eccentrically braced frames[J]. Journal of Structural Engineering, 1984, 110(9):2275-2295.
[4] HJELMSTAD K D, POPOV E P. Characteristics of eccentrically braced frames[J]. Journal of Structural Engineering, 1984, 110(2):340-353.
[5] 蔡益燕, 钱稼茹, 郁银泉. 偏心支撑框架设计新进展[J]. 建筑结构, 2011, 41(4):7-10. CAI Yiyan, QIAN Jiaru, YU Yinquan. Advance in eccentrically braced frame design[J]. Building Structure, 2011, 41(4):7-10.(in Chinese)
[6] GB50011-2010,建筑抗震设计规范[S]. 北京:中国建筑工业出版社, 2010. GB50011-2010, Code for Seismic Design of Buildings[S]. Beijing:China Architecture Industry Press, 2010. (in Chinese)
[7] 施刚, 班慧勇, 石永久,等. 高强度钢材钢结构的工程应用及研究进展[J]. 工业建筑, 2012, 42(1):1-7. SHI Gang, BAN Huiyong, SHI Yongjiu,et al. Engineering application and recent research progress on high strength steel structures[J]. Industrial Construction, 2012, 42(1):1-7.(in Chinese)
[8] 李慎, 苏明周, 连鸣. 基于性能设计的高强钢组合K形偏心支撑钢框架抗震性能研究[J]. 建筑结构, 2015, 45(6):71-79. LI Shen,SU Mingzhou,LIAN Ming. Seismic behavior study of K-typed eccentricially braced steel frames with high strength steel combination based on performance design method[J]. Building Structure, 2015, 45(6):71-79. (in Chinese)
[9] 李慎, 田建勃, 马辉,等. 基于性能设计的高强钢组合Y形偏心支撑钢框架抗震性能研究[J]. 工业建筑, 2018, 48(3):140-150. LI Shen, TIAN Jianbo, MA Hui,et al. Research on the seismic behavior of Y-type eccentrically braced frames combined with high strength steels based on PBSD method[J]. Industrial Construction, 2018, 48(3):140-150. (in Chinese)
[10] 李慎, 苏明周. 基于性能的偏心支撑钢框架抗震设计方法研究[J]. 工程力学, 2014, 31(10):195-204.. LI Shen, SU Mingzhou. Performance-based seismic design method of eccentrically braced steel frames[J]. Engineering Mechanics, 2014, 31(10):195-204. (in Chinese)
[11] Federal Emergency Management Agency, FEMA695. Quantification of building seismic performance factors[R]. California, USA:Federal Emergency Management Agency, 2009:A22-A25.

相似文献/References:

[1]樊瑞昌,苏明周.高强钢组合D型偏心支撑框架抗震性能分析[J].世界地震工程,2016,(02):229.
 FAN Ruichang,SU Mingzhou.Seismic behavior analysis of D-type eccentrically braced frames structure combined with high strength steel[J].,2016,(03):229.

备注/Memo

备注/Memo:
收稿日期:2019-03-08;改回日期:2019-09-02。
基金项目:陕西省教育厅专项科研计划(20JK0861)
作者简介:王峥(1987-),讲师,主要从事结构抗震性能分析研究.E-mail:3w-119@163.com
通讯作者:李慎(1986-),讲师,主要从事钢结构抗震和新型结构体系研究.E-mail:lishen2861@163.com
更新日期/Last Update: 1900-01-01