- 摘 要
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（1 西安建筑科技大學土木工程學院， 西安 710055； 2 中冶建筑研究總院有限公司， 北京 100088）
［摘要］砌體結(jié)構(gòu)窗下墻力學分析與設計方法在我國《砌體結(jié)構(gòu)設計規(guī)范》（GB 50003—2011）中尚未提及。通過兩片實心標磚墻體試件的擬靜力試驗，測試無筋砌體結(jié)構(gòu)窗下墻試件的開裂荷載與極限荷載，對窗下墻試件的破壞形態(tài)、滯回耗能特性、變形能力等抗震性能進行分析與研究。結(jié)果表明：窗下墻受剪破壞試件在達到極限承載力之前變形很小，之后剛度急劇下降，表現(xiàn)出無筋砌體結(jié)構(gòu)脆性破壞的特征；砌體結(jié)構(gòu)相關(guān)設計規(guī)范應充分考慮窗下墻破壞的模式與機理，建立窗下墻抗震設計理論分析與計算方法。
［關(guān)鍵詞］砌體結(jié)構(gòu)； 窗下墻； 擬靜力試驗； 抗震性能
中圖分類號：TU362文獻標識碼：A文章編號：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
*國家自然科學基金項目（51508456）,陜西省自然科學基金項目（2016JQ5023）,陜西省教育廳自然科學研究項目（16JK1438）,西安建筑科技大學青年科技基金重點項目（JQ1504）。
作者簡介：信任，博士，高級工程師，Email: xinren728@163.com。
