- 摘 要
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(1 同济大学建筑工程系, 上海 200092; 2 同济大学土木工程防灾国家重点实验室, 上海 200092)
[摘要]提出一种适用于梁贯通式支撑钢结构的节点模拟方法——等效构件法,该方法可以近似模拟节点刚度和强度,同时不至于忽略节点的滞回耗能。阐述了等效构件法的概念、基本假设和参数确定,利用该方法进行梁贯通式节点往复加载试验及梁贯通式支撑钢结构拟静力足尺试验数值模拟。结果表明,等效构件法在模拟节点性能及整体结构抗侧刚度、承载力、滞回耗能等方面有良好的适用性。
[关键词]钢结构; 梁贯通; 等效节点; 数值模拟; 滞回耗能
中图分类号:TU391 文献标识码:A 文章编号:1002-848X(2015)02-0010-05
Equivalent component method for energy dissipation modelling of joint in steel
beamthrough braced structures
Zou Chao1, Wang Wei1,2
(1 Department of Structural Engineering, Tongji University, Shanghai 200092, China;
2 State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China)
Abstract:A numerical simulation method called equivalent component method was proposed for connections of steel beamthrough braced structures, which can approximately simulate the rigidity and strength of the connection and take the hysteretic energy dissipation capacity of the connection into consideration. The concept and basic assumptions of equivalent component method were explained, as well as the parameter determination. The method has been used to simulate the cyclic test of beamthrough connections and the fullscale quasistatic tests on steel beamthrough braced frames. Results show that the equivalent component method has a good applicability for simulating the performance of connections and lateral stiffness, bearing capacity and hysteretic energy dissipation capacity of the structure.
Keywords:steel structure; beamthrough; equivalent connection; numerical simulation; hysteretic energy dissipation
*国家自然科学基金项目(51038008), 十二五国家科技支撑计划课题(2015BAL03B01)。
通讯作者:王伟,博士,研究员,Email: weiwang@tongji.edu.cn。
参考文献
[1]王伟, 陈以一, 余亚超, 等. 分层装配式支撑钢结构工业化建筑体系[J]. 建筑结构, 2012,42(10):4852.
[2]WANG WEI, ZHOU QING, CHEN YIYI, et al. Experimental and numerical investigation on fullscale tensiononly concentrically braced steel beamthrough frames[J]. Journal of Constructional Steel Research, 2013,80: 369385.
[3]王伟, 周青, 陈以一, 等. 梁贯通式支撑钢框架体系的强度折减系数研究[J]. 建筑结构学报,2014,35(1):136141.
[4]刘浩晋, 王伟, 陈以一, 等. 分层装配式支撑钢结构梁贯通式节点研制与性能试验[J]. 建筑结构, 2012,42(10):5356.
[5]周青, 王伟, 陈以一, 等. 分层装配式支撑钢结构工业化建筑体系抗震性能试验研究[J]. 建筑结构,2012,42(10):6164.
[6]HADIANFARD M A, RAZANI R. Effects of semirigid behavior of connections in the reliability of steel frames[J]. Structural Safety, 2003,25(2):123138.
[7]张一舟, 王元清, 施刚, 等. 节点刚度对多层钢框架静力性能的影响分析[J]. 青岛理工大学学报, 2006,27(3):2933.
[8]ROMSTAD K M, SUBRAMANIAN C V. Analysis of frames with partial connection rigidity[J]. Journal of the Structural Division, 1970,96(11):22832300.
[9]段忠东. 结构半刚性节点的有限元模型修正[D]. 哈尔滨:哈尔滨工业大学, 2005.
[10]胡习兵, 舒兴平, 沈蒲生. 半刚性连接钢框架的简化计算方法[J]. 湖南大学学报: 自然科学版, 2005,32(4):1823.
[11]LI T Q, CHOO B S, NEHTERCOT D A. Connection element method for the analysis of semirigid frames[J]. Journal of Constructional Steel Research, 1995,32(2):143171.
[12]刘浩晋. 全螺栓现场连接梁贯通式节点性能研究[D]. 上海: 同济大学, 2012.
[13]丁洁民, 沈祖炎. 节点半刚性对钢框架结构内力和位移的影响[J]. 建筑结构, 1991,21(6):812.
[14]石永久, 王萌, 王元清. 基于多尺度模型的钢框架抗震性能分析[J]. 工程力学, 2011,28(12):2026.
[15]刘大伟, 王伟, 余亚超, 等. 分层装配式钢结构体系新型支撑研制与性能试验[J]. 建筑结构, 2012,42(10):5760.
[16]同济大学钢与轻型结构研究室. 分层装配式支撑钢结构工业化住宅体系节点试验研究报告[R]. 上海: 同济大学建筑工程系, 2011.