- 摘 要
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(1 廈門大學(xué)建筑與土木工程學(xué)院土木工程系， 廈門 361005； 2 廈門市交通運輸局， 廈門 361005；3 廈門合立道工程設(shè)計集團股份有限公司， 廈門 361005)
［摘要］在滿足歷史建筑保護的要求下，針對砂漿性能退化引起的歷史建筑砌體結(jié)構(gòu)安全性不足問題，提出采用置換砂漿法來提高砌體結(jié)構(gòu)抗剪性能。對不同置換砂漿強度和不同置換深度的試件進行對角加載剪切試驗，研究置換砂漿強度以及置換深度對砌體結(jié)構(gòu)抗剪強度的影響。結(jié)果表明，置換砂漿強度和置換深度對提高砌體結(jié)構(gòu)的抗剪性能有明顯作用；其中置換砂漿強度為11.1MPa水泥砂漿的試件比未置換砂漿的試件對角剪切強度提高了127.31%，而置換砂漿強度為55.0MPa灌漿料的試件比未置換砂漿的試件對角剪切強度提高了34.87%；以未置換砂漿試件的對角剪切強度為基準，置換深度為30mm的試件對角剪切強度提高了61.34%，置換深度為40mm的試件對角剪切強度提高了127.31%，而置換深度為50mm的試件對角剪切強度提高了112.18%。
［關(guān)鍵詞］置換砂漿；砌體加固；抗剪性能；置換砂漿強度；置換深度
中圖分類號：TU362 文獻標識碼：A文章編號：1002-848X(2021)13-0126-06
Experimental study on effect of replacement mortar strength and depth on shear performance of masonry strengthened with replacement mortar
SHI Jianguang1, ZHENG Xuefeng1, LIN Shuzhi1,2, XIE Yiren3
(1 Department of Civil Engineering, School of Architecture and Civil Engineering, Xiamen University, Xiamen 361005， China； 2 Xiamen Transportation Bureau, Xiamen 361005， China； 3 Xiamen Helidao Engineering Design Group Co., Ltd., Xiamen 361005， China)
Abstract: In order to meet the requirements of protection of historical buildings, the replacement mortar method was proposed to improve the shear performance of masonry structures in view of the insufficient safety of masonry structures in historical buildings caused by the deterioration of mortar performance. The diagonal loading shear tests were carried out on specimens with different replacement mortar strength and replacement depth to study the influence of replacement mortar strength and replacement depth on shear performance of masonry structure. The results show that the replacement mortar strength and replacement depth have obvious effect on improving the shear performance of masonry structure. The diagonal shear strength of the specimen with 11.1MPa replacement cement mortar is 127.31% higher than that of the specimen without replacement mortar, while the diagonal shear strength of the specimen with 55.0MPa grouting material is 34.87% higher than that of the specimen without replacement mortar. Taking the diagonal shear strength of the specimen without replacement mortar as a benchmark, the diagonal shear strength of the specimen with replacement depth of 30mm increases by 61.34%, the diagonal shear strength of the specimen with replacement depth of 40mm increases by 127.31%, and the diagonal shear strength of the specimen with replacement depth of 50mm increases by 112.18%.
Keywords:replacement mortar； masonry strengthening； shear performance； replacement mortar strength； replacement depth
*砌體結(jié)構(gòu)不連續(xù)注漿補強加固技術(shù)（XDHT2017470A）。
作者簡介：石建光，博士，教授，Email:jgshi798@xmu.edu.cn。
