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首页> 外文期刊>Journal of Structural Engineering >Performance evaluation of seismic resisting and retrofitting measures for full-scale brick masonry buildings under earthquake loads
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Performance evaluation of seismic resisting and retrofitting measures for full-scale brick masonry buildings under earthquake loads

机译：大型砖混结构房屋在地震作用下的抗震改造性能评估

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The paper outlines the effectiveness of earthquake resisting and retrofitting measures on masonry buildings by di".. cussing the experimental results on full-scale masonry model subjected to distributed lateral displacement loading at roof level. Two full scale single storied brick masonry room i.e. Model-URM (room without earthquake resisting measures; unreinforced) and Model-RMM (room with earthquake resisting measures; reinforced) with plan dimension 2750 x 3050mm and a height of 3090mm are constructed. The models are tested upto ultimate failure and later repaired, strengthened and retested. The earthquake resisting measures adopted are lintel band and vertical corner reinforcement. The repair technique used is stitching whereas for strengthening the URM building MS flat lintel belt and corner reinforcement is used whereas for RMM, welded wire mesh only from outside is used. The models are fully instrumented with LVDTs so as to capture the deflections at critical locations and online data is acquired through data acquisition system. The tests are carried out under quasi-static condition. The failure is assumed to occur when the structure refuses to take further load despite of increase in displacement. The experimental investigations on tested masonry models indicate that earthquake-resisting provisions such as lintel band, corner reinforcement increases lateral load carrying capacity, ductility and are also effective in preventing collapse. The damages to the walls islocalized and reduced either above lintel level or below openings. The failures at the corner of walls can be effectively prevented by providing the corner reinforcement and welded wire mesh in damaged portion. These strengthening measures not only helps in improving strength, stiffness and ductility but also prevent damage in piers of walls.
机译：本文概述了用di“。进行抗震和加固措施对砖石建筑的有效性。在屋顶水平分布侧向位移荷载作用下的全尺寸砖石模型上，通过试验结果进行了总结。两个全尺寸单层砖砌砖房即Model-建造了尺寸为2750 x 3050mm，高度为3090mm的URM（无抗震措施的房间;未加固的）和Model-RMM（有抗震措施的房间;加固的），对模型进行了测试直至最终失效，然后进行了维修，加强和加固。所采取的抗震措施是门lin带和垂直角加固，所采用的修复技术是缝合，而用于加固URM建筑MS平门belt带和角加固，而对于RMM，则仅从外部使用焊接网。 LVDT完全装备了这些模型，以便捕获关键位置和唯一位置的变形通过数据获取系统获取数据。测试在准静态条件下进行。当结构尽管位移增加而拒绝承受进一步的载荷时，则认为发生了故障。对经过测试的砌体模型进行的实验研究表明，诸如门tel带，角corner加固等抗震措施可提高侧向承载能力，延展性，并且还可以有效防止坍塌。对墙壁的损害是局部的，并在石水平以上或开口以下得以减少。通过在受损部分设置角部加强件和焊接金属丝网，可以有效地防止墙体拐角处的破坏。这些加固措施不仅有助于提高强度，刚度和延展性，还可以防止墙墩的损坏。

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