（1 西安建筑科技大学土木工程学院， 西安 710055； 2 中冶建筑研究总院有限公司， 北京 100088）

［摘要］砌体结构窗下墙力学分析与设计方法在我国《砌体结构设计规范》（GB 50003—2011）中尚未提及。通过两片实心标砖墙体试件的拟静力试验，测试无筋砌体结构窗下墙试件的开裂荷载与极限荷载，对窗下墙试件的破坏形态、滞回耗能特性、变形能力等抗震性能进行分析与研究。结果表明：窗下墙受剪破坏试件在达到极限承载力之前变形很小，之后刚度急剧下降，表现出无筋砌体结构脆性破坏的特征；砌体结构相关设计规范应充分考虑窗下墙破坏的模式与机理，建立窗下墙抗震设计理论分析与计算方法。

［关键词］砌体结构； 窗下墙； 拟静力试验； 抗震性能

中图分类号：TU362文献标识码：A文章编号：1002-848X(2017)07-0069-03

Quasi-static experimental study on seismic performance of unreinforced masonry spandrel walls

Xin Ren1,2 , Yao Jitao1, Wu Mengxi2 , Zhou Tiegang1, Hou Jian2

(1 Department of Civil Engineering, Xi′an University of Architecture and Technology, Xi′an 710055, China;

2 Central Research Institute of Building and Construction，MCC，Beijing 100088， China)

Abstract:The mechanics analysis and design methods  for masonry spandrel walls haven′t been mentioned in Code for design of masonry structures (GB 50003—2011) yet. Based on the quasi-static experiments on two specimens of brick walls, the cracking load and ultimate load of unreinforced masonry spandrel walls were tested. The seismic performances of two masonry spandrel walls were investigated, including failure pattern, hysteretic property and deformation capacity. The experimental results show that the deformations of spandrel wall specimens are very small before reaching ultimate load and then the stiffness falls sharply, which indicates the characteristic of brittle failure for unreinforced masonry structure. The failure mode and mechanism of spandrel walls in masonry structure should be fully taken account to establish theoretical analysis and calculation method of spandrel wall seismic design in masonry structure codes.

Keywords:masonry structure; spandrel wall; quasi-static experiment; seismic performance

*国家自然科学基金项目（51508456）,陕西省自然科学基金项目（2016JQ5023）,陕西省教育厅自然科学研究项目（16JK1438）,西安建筑科技大学青年科技基金重点项目（JQ1504）。

作者简介：信任，博士，高级工程师，Email: xinren728@163.com。