（1 广西大学土木建筑工程学院， 南宁 530004； 2 广西大学行健文理学院， 南宁 530005；3 广西华蓝设计(集团)有限公司建筑设计院， 南宁 530000；4 广西大学工程防灾与结构安全教育部重点实验室， 南宁 530004）

［摘要］为了研究蜂窝轻钢门式刚架的抗震性能，对该类新型结构进行了低周反复荷载试验研究。设计两个蜂窝轻钢门式刚架试件进行试验，考虑了开孔形式、开孔率和节点域加劲肋三种参数对结构性能的影响。通过试验得到该类结构的破坏形态、荷载位移曲线以及承载力等重要数据，分析结构的耗能能力、延性、刚度退化等结构性能与变化参数的关系。试验研究表明：蜂窝轻钢门式刚架在加载远端节点附近梁、柱上的蜂窝孔处形成塑性铰而发生破坏，具有良好的延性性能；蜂窝轻钢门式刚架的耗能能力小于普通门式刚架，且圆形开孔形式的蜂窝轻钢门式刚架的抗震性能比六边形开孔形式的好；随着蜂窝钢构件腹板开孔率的增大，结构的刚度和极限承载力有所降低；节点域受力较小，设计时只需按常规的节点处理即可，节点域无需设置加劲肋。研究结果可为蜂窝轻钢门式刚架的进一步研究和推广应用提供参考。

［关键词］蜂窝构件; 门式刚架; 轻钢结构; 抗震性能

中图分类号：TU392.5       文献标识码：A       文章编号：1002-848X(2014)12-0074-06

Experimental study on seismic performance of the castellated portal frame of light-weight steel

Su Yisheng1, 4, Zheng Shufang2, Li Qiliang3, Chen Zongping1, 4

（1 College of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China; 2 Xingjian College of Science and Liberal Arts, Guangxi University, Nanning 530005, China; 3 Guangxi Hualan Design & Consulting Group, Architectural Design Institute, Nanning 530000, China; 4 Key Laboratory of Disaster Prevention and Structural Safety of China Ministry of Education, Guangxi University, Nanning 530004, China）

Abstract: In order to study the seismic performance of the castellated portal frame of light-weight steel, the low cyclic reversed loading experiment was performed for this new structure type. Two specimens were designed and three influential parameters were considered including the opening forms, the opening ratio and stiffener in the joint region. The failure mode, the load-displacement curve and the bearing capacity were obtained from the test, and the relationship of the structural performance such as the energy dissipation capacity, the ductility and stiffness degradation with the variable parameters were studied. The results of study show that the castellated portal frame of light-weight steel is destructed by loading the castellated holes around the beam and column near the distal joints to form the plastic hinge, which presents excellent ductility. The energy dissipation capacity of the castellated portal frame of light-weight steel is less than that of the hexagon form portal frame, but the seismic performance of the castellated portal frame of light-weight steel with circle opening forms is better than that the hexagon from portal frame. The stiffness and the limit bearing capacity decrease when the web opening ratio of structure increases. Due to weak stress in the joint region, the stiffener should not be considered in the design of joints and joints could be designed according to the common joints. The results can provide reference for further research and application of the castellated portal frame of light-weight steel.

Keywords: castellated component; portal frame; light-weight steel structure; seismic performance

*广西科学研究与技术开发计划项目（桂科攻0995008），广西防灾减灾与工程安全重点实验室项目（20122DX02）。

作者简介：苏益声，教授，博士生导师，Email:suyisheng@sina.com。

参考文献

［1］KERDAL D, NETHERCOT D A. Failure modes for castellated beams［J］. Journal of Constructional Steel Research, 1984, 4(4):295-315.

［2］苏益声,邹锦华,张喜德. 圆形孔蜂窝钢梁试验研究［J］. 建筑结构,2006,36(8),28-30.

［3］陈绍蕃.钢结构下册(房屋建筑钢结构设计)［M］. 北京：中国建筑工业出版社, 2003.

［4］郭秉山,彭军,刘朝科.梁腹板削弱式刚性钢框架抗震性能研究［J］. 西安科技大学学报:自然科学版,2007,27(3):364-367.

［5］李波,杨庆山,茹继平,等. 梁腹板开圆孔的钢框架抗震性能研究［J］. 工程力学,2009,26(1):64-73.

［6］贾连光,王健. 蜂窝式梁-柱钢框架结构抗震性能分析［J］. 沈阳建筑大学学报：自然科学版, 2009,25(3):451-455.

［7］贾连光,孙宏达,王春刚. 蜂窝式钢框架结构抗震性能试验研究［J］. 工程力学,2012,29(7):147-153.

［8］李启良.蜂窝轻钢门式刚架受力性能试验与有限元研究［Ｄ］．南宁：广西大学，2012.

［9］徐勇,陈以一,程欣，等. 轻型门式刚架抗震性能试验研究［J］. 建筑结构学报,2010,31(10):76-82.

［10］KATO B, CHEN W F, NAKAO M. Effects of joint-panel shear deformation on frames［J］. Journal of Constructional Steel Research, 1988, 10(1):269-320.