(1 东南大学土木工程学院， 南京 210096； 2 东南大学城市与建筑遗产保护教育部重点实验室， 南京 210096)

［摘要］对六朵宋式斗栱及一攒清式斗栱足尺模型进行了低周反复荷载试验研究。由试验结果可以看出，斗栱像球形铰一样具有较好的转动能力，而且层间滑移现象并不明显。大部分斗栱模型发生了斗底的脱榫或折榫破坏，而上部构件的整体性较好，基本未发生破坏。试验得出了斗栱的滞回曲线、骨架曲线，由于里跳和外跳不对称，所以横向加载时的滞回曲线不对称。还探讨了不同形制及铺作数对斗栱抗震性能的影响，宋式斗栱横向的抗侧刚度和水平承载力略大于纵向的，且随着出跳数增加而减小；清式斗栱由于尺寸较小，抗侧刚度和承载力均较小。

［关键词］斗栱; 低周反复荷载; 不同铺作数; 抗震性能

中图分类号：TU366   文献标识码：A   文章编号：1002-848X(2014)09-0079-04

Experimental study of low-cycle loading test on Song-style and Qing-style dougong

Shao Yun1, Qiu Hongxing1, Yue Zhi2, Chun Qing2

 (1 School of Civil Engineering, Southeast University, Nanjing 210096, China; 2 Key Lab of Urban & Architectural Heritage Conservation, Ministry of Education, Southeast University, Nanjing 210096, China)

Abstract: Experimental study was carried out on low-cycle loading test of seven full-scale dougong models, including six Song-style dougong models and one Qing-style dougong model. Results show that dougong has well rotation capacity as spherical hinges, which seldom slip interfacial. Most dougong models failed due to pulled out or broken of nethermost tenon, while the upper members worked as a whole and hardly got broken. The hysteretic curves and skeleton curves of these models were obtained. Due to asymmetry of inside and outside parts of dougong, hysteretic curves under horizontal loads were asymmetrical. The influence of different forms and layers of dougong on its seismic performance was also discussed. The lateral stiffness and load-bearing capacity of Song-style dougong, which decreased as the layers of dougong increased, were slightly larger when under horizontal loads than under vertical loads. Lateral stiffness and load-bearing capacity of Qing-style dougong were small due to its small size.

Keywords: dougong; low-cycle loading; different layer; seismic performance

*国家自然科学基金重点项目（51138002），国家十二五科技支撑项目（2012BAJ14B02）。

作者简介：邵云，硕士研究生，Email: ggp8711@163.com。

参考文献

［1］张鹏程, 赵鸿铁, 薛建阳,等. 斗栱结构功能试验研究［J］. 世界地震工程, 2003, 19(1): 102-106.

［2］隋䶮, 赵鸿铁, 薛建阳,等. 古建木构铺作层侧向刚度的试验研究［J］. 工程力学, 2010, 27(3): 74-78.

［3］高大峰, 赵鸿铁, 薛建阳. 木结构古建筑中斗栱与榫卯节点的抗震性能——试验研究［J］. 自然灾害学报, 2008, 17(2): 58-64.

［4］袁建力, 陈韦, 王珏,等. 应县木塔斗栱模型试验研究［J］. 建筑结构学报, 2011, 32(7): 66-72.

［5］陈韦. 应县木塔斗栱力学性能及简化分析模型的研究［D］. 扬州:扬州大学, 2010.

［6］张鹏程, 赵鸿铁, 薛建阳,等. 中国古代大木作结构振动台试验研究［J］. 世界地震工程, 2002, 18(4): 35-41.

［7］薛建阳, 赵鸿铁, 张鹏程,等. 中国古建筑木结构模型的振动台试验研究［J］. 土木工程学报, 2004, 37(6): 6-11.