南京工业大学学报（自然科学版）2018，Vol.40Issue(3)：61-66,6.DOI:10.3969/j.issn.1671-7627.2018.03.011
体外预应力加固砖砌体开洞墙抗震性能试验
Quasi-static test on seismic behavior of masonry walls with opening strengthened with external prestressing technique
摘要
Abstract
The three unreinforced masonry walls with opening(including two walls strengthened by the prestressing force applied to the vertical and diagonal prestressing tendons,one companion control wall) subjected to lateral cyclic loading were tested.The crack development,yielding and breakage of the three walls were presented,including discussion on the seismic performance in terms of failure processes and patterns,hysteretic characteristics and skeleton curve,ductility and stiffness degradation.The experimental results indicated that the typical failure mode of prestressed wall was shear-compression failure;the vertical prestressing technique was significantly effective in improving cracking load;the diagonal prestressing technique was more significantly effective in increasing the ultimate load and lateral stiffness. The initial stress of the prestressing tendon had a linear relationship,the stress of the vertical and diagonal prestressing tendons were increased by 146.15 and 154.73 MPa,respectively.关键词
开洞墙体/体外预应力/抗震加固/拟静力试验Key words
wall with opening/external prestressing technique/seismic reinforcement/quasi-static test分类
建筑与水利引用本文复制引用
徐振文,周志强,郑松林,郭樟根,杨放,蒋吉明..体外预应力加固砖砌体开洞墙抗震性能试验[J].南京工业大学学报（自然科学版）,2018,40(3):61-66,6.基金项目
国家自然科学基金(50708045) （50708045）
