双层玻璃纤维网格增强环氧砂浆单面加固砌体墙抗震性能试验研究  

Experimental study on seismic performance of epoxy mortar one-sided reinforced masonry wall strenghthed with double-layer fiberglass mesh

作　　者：万世有 潘二明 闫文举 邓宗才[2] 陈铭华 WAN Shiyou;PAN Erming;YAN Wenju;DENG Zongcai;CHEN Minghua(China Railway Construction Group Company,beijing,100040,China;Beijing University of Technology,Bejing 100124,China)

机构地区：[1]中铁建设集团有限公司,北京100040 [2]北京工业大学,北京100124

出　　处：《工程建设》2024年第9期8-13,共6页Engineering Construction

基　　金：北京市教委科技重点攻关项目(KZ201810005008)。

摘　　要：为研究双层玻璃纤维网格增强环氧砂浆单面加固砌体墙的抗震性能,对两个高度为1200 mm、宽度为1600 mm、厚度为240 mm的砌体墙进行低周往复试验。试验结果表明:1)双层玻璃纤维网格增强环氧砂浆抗震加固技术切实可行,加固后的墙体破坏形态由脆性转为延性;2)加固后能够降低裂缝扩展速率,减小裂缝宽度;3)显著提高了墙体承载力与变形能力,峰值荷载约提高了91.5%,开裂荷载约提高了20.4%,墙体开裂位移提升了20.0%;4)加固墙体的滞回曲线更加饱满优良,可恢复性变形增加,残余变形更小。本文成果可为砌体墙的加固工程提供一定的借鉴与参考。In order to study the seismic performance of strenghthed with reinforced epoxy mortar one-sided reinforced masonry walls strenghthed with,a low circumferential reciprocation tests is conducted on two masonry walls with a height of 1,200 mm,a width of 1,600 mm,and a thickness of 240 mm.The test results show that:1)the streughthening the streughthening method is practicable,and the damage pattem of the strenghthed reinforced wall is changed from brittle to ductile;2)the streughthening can reduce the crack expansion rate and crack width;3)it can significantly improve the wall bearing capacity and deformation capacity,the peak load is increased by about 91.5%,the cnacking load is increased by about 20.4%,and the cracking displacement of the wall is improved by 20.0%;4)the strenghthed walls have more full and excellent hysteretic curves.The hysteresis curve of the strenghthed wall is more full and excellent,the recoverable deformation is increased,and the residual deformation is smaller.The results of this paper can provide certain reference for the masonry wall reinforcement project.

关 键 词：砌体墙加固 玻璃纤维网格 环氧砂浆 低周往复试验 抗震性能 

分 类 号：TU59[建筑科学—建筑技术科学]