- 摘 要
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（1 南京市房屋安全鑒定處， 南京 210029； 2 江蘇省蘇科建設(shè)技術(shù)發(fā)展有限公司， 南京 210008）
［摘要］以南京城區(qū)20世紀(jì)80年代至90年代既有老舊砌體房屋為研究對象，采用貫入法和筒壓法對常規(guī)條件下墻體砌筑砂漿強度進(jìn)行現(xiàn)場檢測，結(jié)合兩種方法的特點對比分析檢測結(jié)果的差異。結(jié)果表明，對既有老舊房屋，同一構(gòu)件筒壓法現(xiàn)場檢測砂漿強度要大于貫入法檢測強度值，其比值在1-0～4-0之間的分布概率為83%?；谄鲋皾{與砌體強度換算關(guān)系對兩種方法得到的砂漿強度進(jìn)行換算，結(jié)合相應(yīng)墻體構(gòu)件原位軸壓法試驗結(jié)果，對兩種方法換算砌體強度與原位軸壓法砌體強度關(guān)系進(jìn)行對比分析，結(jié)果表明，原位軸壓法測得的砌體強度與貫入法換算砌體強度比值在0-75～1-5之間的分布概率為92%，與筒壓法換算砌體強度比值在0-6～1-4之間的分布概率為93%。試驗結(jié)果對城區(qū)既有老舊房屋安全性鑒定提供了一定的判斷依據(jù)。
［關(guān)鍵詞］既有老舊房屋； 砂漿強度； 貫入法； 筒壓法； 原位軸壓法
中圖分類號：TU362文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2019)05-0023-04
Field test study on mortar and masonry strength of existing old buildings
Yu Yunlong1, Li Shihong2, Yu Hong1, Du Lei1, Liu Wei2, Wang Guifei2
(1 Nanjing Housing Safety Appraisal Office，Nanjing 210029, China；2 Jiangsu Suke Construction Technology Development Co.， Ltd.， Nanjing 210008, China)
Abstract:Taking the existing old buildings in Nanjing urban area from 1980s to 1990s as the research objects, the penetration method and cylinder compression method were used to test the strength of wall masonry mortar under conventional conditions, and the differences between the two methods were compared and analyzed according to the characteristics of the two methods. The results show that for existing old buildings, the strength of mortar measured by cylinder compression method of the same component is greater than that measured by penetration method, and the probability of distribution of the ratio between 1-0 and 4-0 is 83%. Based on the strength conversion relationship between masonry mortar and masonry, the strength of mortar obtained by the two methods was converted. Combining with the results of in-situ axial compression test of corresponding wall components, the strength relationship between the two methods and in-situ axial compression method was analyzed and compared. The results show that the strength ratio of masonry measured by in-situ axial compression method to that calculated by penetration method is between 0-75 and 1-5, the probability of distribution is 92%; and the strength ratio of masonry method by in-situ axial compression method to that caculated by cylinder compression method is between 0-6 and 1-4, the probability of distribution is 93%. The test results provide a certain judgment basis for the safety appraisal of existing old buildings in urban areas.
Keywords:existing old building; mortar strength; penetration method; cylinder compression method; in-situ axial compression method
作者簡介：喻云龍，碩士，研究員級高級工程師，一級注冊結(jié)構(gòu)工程師，Email：yunlongyu@126.com。
