- 摘 要
-
（中國建筑科學(xué)研究院工程抗震研究所， 北京 100013）
［摘要］水泥砂漿面層是多層砌體房屋抗震加固經(jīng)常采用的方法，但是國家標(biāo)準(zhǔn)《砌體結(jié)構(gòu)加固設(shè)計規(guī)范》(GB 50702—2011)和行業(yè)標(biāo)準(zhǔn)《建筑抗震加固技術(shù)規(guī)程》(JGJ 116—2009)中分別給出的加固后墻體抗震受剪承載力的計算方法并不相同。采用增強系數(shù)對這兩本標(biāo)準(zhǔn)的計算方法進(jìn)行了統(tǒng)一，以面層厚度、砂漿強度等級、鋼筋配置、加固施工工藝為變化因素，進(jìn)行了基準(zhǔn)增強系數(shù)、不同厚度墻體增強系數(shù)的對比分析，發(fā)現(xiàn)了兩本標(biāo)準(zhǔn)的計算結(jié)果存在著較大差異，最后為標(biāo)準(zhǔn)的修訂提出了進(jìn)一步的研究方向。
［關(guān)鍵詞］抗震加固; 砌體房屋; 水泥砂漿面層; 增強系數(shù); 抗震受剪承載力
中圖分類號：TU362.1 文獻(xiàn)標(biāo)識碼：A 文章編號：1002-848X(2014)11-0034-04
Discussion on calculation of seismic shear capacity of brick wall strengthening with cement mortar splint
Cheng Shaoge, Liu Pei, Bai Xueshuang
(Institute of Earthquake Engineering, China Academy of Building Research, Beijing 100013, China)
Abstract: Strengthening with cement mortar splint is a common method for seismic strengthening of the multi-story masonry buildings. Different calculation methods of seismic capacity were given in current national standard Code for design of strengthening of masonry structures (GB 50702—2011) and Technical specification for seismic strengthening of buildings (JGJ 116—2009). In order to compare the difference between the two standards, the calculation methods of the two standards will be united firstly based on the increasing coefficient. Then the benchmark increasing coefficient and increasing coefficient with different thickness of brick wall were compared carefully, in the analysis, the mortar splint thickness, mortar strength grade, arrangement of reinforcement, construction technique were considered. It is shown that the calculation results of the two standards were quite different, and finally some research proposals for further revision of the standards are put forward.
Keywords: seismic strengthening; masonry structure; cement mortar splint; increasing coefficient; seismic shear capacity
作者簡介：程紹革，研究員，博士生導(dǎo)師，Email: chengshaoge@163.com。
參考文獻(xiàn)
［1］JGJ 116—2009建筑抗震加固技術(shù)規(guī)程［S］. 北京：中國建筑工業(yè)出版社，2009.
［2］GB 50702—2011砌體結(jié)構(gòu)加固設(shè)計規(guī)范［S］. 北京：中國建筑工業(yè)出版社，2011.
