您现在的位置:建筑结构>> 期 刊>> 2015年>> 第10期>>正文内容
带填充墙历史建筑钢框架抗震性能有限元分析*
王宝通,张伟平,顾祥林,王璐
摘 要
(同济大学建筑工程系, 上海 200092)
 
[摘要]带填充墙历史建筑钢框架的低周反复加载试验表明,钢柱外包砖、填充墙能显著提高框架抗震承载能力和抗侧刚度。在此基础上,采用ABAQUS软件建立单层单跨带填充墙钢框架三维实体模型,进一步分析其在水平荷载作用下的受力性能,数值模拟结果与试验结果较吻合。有限元分析发现,钢框架达到承载能力极限状态时钢柱及其外包砌体、填充墙的贡献近似等于各自的极限承载能力。参数分析结果表明,填充墙宽度增大,墙体承载力贡献提高,但其抗剪强度下降,不能简单地根据抗剪面积计算填充墙承载力贡献。此外,随着填充墙厚度的增加和砂浆强度的提高,填充墙的承载力贡献增加。将该类历史建筑中填充墙框架看作带斜撑钢框架,假定钢柱与外包砌体协同工作,建立了抗剪承载力的简化计算公式。
[关键词]历史建筑; 钢框架; 填充墙; 抗震性能; 有限元分析
中图分类号:TU391      文献标识码:A      文章编号:1002-848X(2015)10-0026-06
 
Finite element analysis of seismic performance of masonry-infilled historic steel frames
Wang Baotong, Zhang Weiping, Gu Xianglin, Wang Lu
(Department of Structural Engineering, Tongji University, Shanghai 200092, China)
 
Abstract:Low-cyclic lateral loading tests on masonry-infilled historic steel frames show that covered masonry around the columns and the infilled wall can significantly increase the loading capacity and lateral stiffness of the steel frames. For further investigation on structural performance of infilled steel frames under lateral loading, the three-dimensional models of single-layer and single-span steel frame structures with infilled masonry walls were established in ABAQUS for finite element analysis. Numerical simulation results agree well with the experimental results. Results of  the finite element analysis indicate that the contribution of infilled wall, steel columns and their covered masonry can approximately equal their respective ultimate lateral loading capacity when the infilled steel frame reaches the ultimate loading capacity. Parametric analysis results show that a greater ultimate loading capacity is found as expected in the steel frame with a wider infilled wall, but the average shear strength of the infilled wall decreases as the width of the infilled wall increases. It can be deduced that the contribution of the infilled wall to the lateral loading capacity cannot be simply estimated by its shear area. With the increase of thickness and mortar strength of the infilled wall, the contribution of the infilled wall to the lateral loading capacity increases. Assuming that steel columns can work well with covered masonry as integral composite columns, this kind of historic building with infilled wall frame was considered as an equivalent diagonal strut, and a simplified method was proposed to calculate the shear capacity of the structure.
Keywords:historic building; steel frame; infilled wall; seismic performance; finite element analysis
 *上海市科学技术委员会研究课题“优秀历史建筑混凝土结构抗震加固的关键技术研究”(10dz2212800)。
作者简介:王宝通,硕士研究生,Email: 1989_baotongwang@tongji.edu.cn。
 
参考文献
[1]上海市优秀近代建筑中山东一路18号房屋质量检测报告[R].上海:同济大学房屋质量检测站, 2003.
[2]崔玮. 历史建筑基于性能的抗震评估[D]. 上海:同济大学, 2011.
[3]STAFFORD SMITH B. Methods for predicting the lateral stiffness and strength of multi-storey infilled frames[J]. Building Science, 1967, 2(3): 247-257.
[4]MALLICK D V, SEVERN R T. The behaviour of infilled frames under static loading[C]//ICE Proceedings. London:Thomas Telford Ltd., 1967, 38(4): 639-656.
[5]ALI S S, PAGE A W. Finite element model for masonry subjected to concentrated loads[J]. Journal of Structural Engineering, 1988, 114(8): 1761-1784.
[6]KOUTROMANOS I, STAVRIDIS A, SHING P B, et al. Numerical modeling of masonry-infilled RC frames subjected to seismic loads[J]. Computers & Structures, 2011, 89(11): 1026-1037.
[7]林旭川, 潘鹏, 叶列平, 等. 汶川地震中典型 RC 框架结构的震害仿真与分析[J]. 土木工程学报, 2009, 42(5): 13-20.
[8]苗吉军, 顾祥林, 张伟平, 等. 地震作用下砌体结构倒塌反应的数值模拟计算分析[J]. 土木工程学报, 2005, 38(9): 45-52.
[9]MOHEBKHAH A, TASNIMI A A, MOGHADAM H A. Nonlinear analysis of masonry-infilled steel frames with openings using discrete element method[J]. Journal of Constructional Steel Research, 2008, 64(12): 1463-1472.
[10]PAULAY T, PRIESTLEY M J N. Seismic design of reinforced concrete and masonry buildings[M].New York: John. Wiley & Sons, Inc, 1992.
[11]CRISAFULLI F J, CARR A J, PARK R. Analytical modelling of infilled frame structures-a general review[J].Bulletin-new Zealand Society for Earthquake Engineering, 2000, 33(1): 30-47.
[12]杨卫忠. 砌体受压本构关系模型[J]. 建筑结构, 2008, 38(10): 80-82.
[13]王珊, 武建华. 砖砌体的非线性计算[J]. 重庆建筑大学学报, 2001, 23(1): 10-16.
[14]刘桂秋, 施楚贤, 刘一彪. 砌体及砌体材料弹性模量取值的研究[J]. 湖南大学学报: 自然科学版, 2008, 35(4): 29-32.
[15]施楚贤. 砌体结构理论与设计[M]. 北京:中国建筑工业出版社, 2003.
[16]GB 50010—2010 混凝土结构设计规范[S]. 北京:中国建筑工业出版社, 2011.
[17]蒋利学, 郑乔文. 考虑主次结构协同工作的框架结构抗震计算分析方法及其应用[J]. 工业建筑, 2009, 39(5): 6-10.
[18]JGJ 138—2001 型钢混凝土组合结构技术规程[S].北京:中国建筑工业出版社, 2001.
[19]FEMA 356 Prestandard and commentary for the seismic rehabilitation of building[S]. Washington D.C.:Federal Emergency Management Agency, 2000.
[20]TASNIMI A A, MOHEBKHAH A. Investigation on the behavior of brick-infilled steel frames with openings, experimental and analytical approaches[J]. Engineering Structures, 2011, 33(3): 968-980.
[21]EL-DAKHAKHNI W W, ELGAALY M, HAMID A A. Three-strut model for concrete masonry-infilled steel frames[J]. Journal of Structural Engineering, 2003, 129(2): 177-185.
下载地址

    你还没注册?或者没有登录?这篇论文要求至少是本站的注册会员才能阅读!

    如果你还没注册,请赶紧点此注册吧!

    如果你已经注册但还没登录,请赶紧点此登录吧!