竖向压应力及高宽比对置换砂浆加固砖墙体的抗震性能研究  

Study on seismic behavior of vertical compression stress and aspect ratio for replacing mortar reinforced brick wall

作　　者：郑煌典 石建光[1] 谢益人 陈周熠[1] Zheng Huang-dian;Shi Jian-guang;Xie Yi-ren;Chen Zhou-yi(College of Architecture and Civil Engineering,Xiamen 361005,China;Xiamen Helidao Engineering Design Group Co.Ltd,Xiamen 361005,China)

机构地区：[1]厦门大学建筑与土木工程学院,福建厦门361005 [2]厦门合立道工程设计集团股份有限公司,福建厦门361005

出　　处：《工程抗震与加固改造》2020年第3期69-75,共7页Earthquake Resistant Engineering and Retrofitting

摘　　要：在历史砌体结构建筑中,部分砖墙的砂浆强度降低很多而砖仍然具有较高强度,从而引起墙体抗剪承载力不满足要求。基于最小干预原则,提出了通过用高性能砂浆置换部分旧砂浆提高结构安全性的砌体结构保护性加固技术。而且竖向压应力及高宽比是影响墙体抗震性能的重要因素。故在前期置换砂浆加固砌体性能研究的基础上,选择X形置换砂浆的方式,考虑不同竖向压应力及高宽比,设计了6个墙体,进行了拟静力试验。试验结果表明:置换砂浆能有效提高墙体的抗剪承载力,且这种加固方式适用于不同竖向压应力及高宽比的墙体,置换砂浆效果取决于墙体裂缝形式和路径。In the safety and seismic identification of historic buildings,there are many brick masonry walls where the mortar strength is very low and the bricks still have higher strength and the bearing capacity is not satisfactory.Based on the principle of minimum intervention,a masonry structure protection technology that improves structural safety by replacing some old mortar with highperformance mortar is proposed.Moreover,vertical compressive stress and aspect ratio are important factors affecting the seismic performance of the wall.Six walls are designed by X-shaped replacement mortar for quasi-static test,considering different vertical compressive stresses and aspect ratios.The test results show that the replacement mortar can effectively improve the shear capacity of the wall,and the reinforcement method is suitable for walls with different vertical compressive stress and aspect ratio.The effect of replacing the mortar depends on the crack form and path of the wall.

关 键 词：置换砂浆 砌体加固 抗震性能 高宽比 竖向压应力 

分 类 号：TU318[建筑科学—结构工程] TU362