Behavior and Design Aspects of FRP-Strengthened URM Walls under Out-of-Plane Loading
Behavior and Design Aspects of FRP-Strengthened URM Walls under Out-of-Plane Loading
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DOI：
10.1061/(asce)cc.1943-5614.0000695
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发表时间：
2016-12-01
影响因子：
4.6
通讯作者：
Abbas, H.
中科院分区：
文献类型：
--
作者：
Elsanadedy, H. M.;Al-Salloum, Y. A.;Abbas, H.
使用外部粘结的纤维增强聚合物（FRP）复合材料的无筋砌体（URM）墙的平面外的抗弯性能的实验和分析研究在这项研究中。共六个空心混凝土砌块墙进行了测试失败，使用气囊和反应框架，以获得一个均匀的负载在墙上。砌体墙水平放置，并作为单向板测试，跨度方向垂直于床缝。第一堵墙未加固，作为对照样本;其他五堵墙采用不同的外部附着玻璃纤维增强聚合物（GFRP）板方案进行加固。试验研究的主要参数为FRP配筋率和刚度。除了实验程序，一个分析模型被开发来预测URM墙的极限弯矩承载力。标准指南中概述的程序也被用来计算墙的抗弯承载力。除了在这项研究中测试的URM墙标本，另外42 URM墙的测试结果在文献中被用于分析模型验证。还提出了一个设计模型，并介绍了新的设计方面。(C)2016年美国土木工程师协会。
The use of externally bonded fiber-reinforced polymer (FRP) composites for upgrading the out-of-plane flexural resistance of unreinforced masonry (URM) walls is experimentally and analytically investigated in this study. A total of six hollow concrete block walls were tested to failure using an airbag and a reaction frame to obtain a uniform load on the wall. The masonry walls were placed horizontally and tested as one-way slabs with span direction perpendicular to the bed joints. The first wall was left unstrengthened to be used as control specimen; the other five walls were strengthened using different schemes of externally attached glass-fiber-reinforced polymer (GFRP) sheets. The main parameters studied experimentally were FRP reinforcement ratio and stiffness. In addition to the experimental program, an analytical model was developed to predict the ultimate moment capacity of the URM walls. The procedure outlined in standard guidelines was also utilized to compute the flexural capacity of walls. Besides the URM wall specimens tested in this study, another 42 test results of URM walls available in literature were used for analytical model validation. A design model was also proposed and new design aspects were introduced. (C) 2016 American Society of Civil Engineers.