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（江蘇大學(xué)土木工程與力學(xué)學(xué)院， 鎮(zhèn)江 212013）

［摘要］混凝土板墻加固法是砌體結(jié)構(gòu)抗震加固常用的方法之一，《砌體結(jié)構(gòu)加固設(shè)計(jì)規(guī)范》（GB 50702—2011）和《建筑抗震加固技術(shù)規(guī)程》（JGJ 116—2009）中均給出了加固后墻體抗震受剪承載力計(jì)算公式，但兩者計(jì)算結(jié)果存在較大的差異。為了對(duì)比兩本標(biāo)準(zhǔn)的不同之處，計(jì)算結(jié)果統(tǒng)一采用增強(qiáng)系數(shù)進(jìn)行表述，分析原磚墻砌筑砂漿強(qiáng)度等級(jí)、板墻厚度、墻體截面豎向壓應(yīng)力及原磚墻厚度等因素對(duì)承載力增強(qiáng)系數(shù)的影響，同時(shí)對(duì)兩種計(jì)算方法的差異性進(jìn)行定量分析，給出240mm厚磚墻規(guī)范增強(qiáng)系數(shù)參考值，為下一步的試驗(yàn)研究確定了方向，并為規(guī)范的修訂和實(shí)際工程應(yīng)用提供了理論參考。

［關(guān)鍵詞］混凝土板墻； 抗震加固； 磚墻； 增強(qiáng)系數(shù)； 差異性分析

中圖分類號(hào)：TU362文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2019)05-0032-06

Discussion on calculation of seismic shear capacity of brick wall strengthening with concrete splint

Ding Bao′an, Fan Xuhong, Yang Fan, Zhang Zhaochang

(Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang 212013, China)

Abstract:Strengthening with concrete splint is one of the most frequently used methods in the reinforcement of masonry structure. The calculation formulas of seismic shear capacity brick wall strengthening with concrete splint are both given in Code for design of strengthening of masonry structures (GB 50702—2011) and Technical specification for seismic strengthening of buildings (JGJ 116—2009), but there is great difference between two calculation results. In order to compare the difference between the two standards, the calculation results of the two standards will be united firstly based on the reinforcement coefficient. The factors which influence the reinforcement coefficient of bearing capacity were analyzed, such as original brick wall′s cement mortar strength, thickness of the concrete wall, vertical compressed stress of wall section, thickness of original brick wall. And the difference of calculation methods in the two standards were quantitative analyzed, the standard reinforcement coefficient reference of 240mm brick wall are given. For the next experimental study to determine the direction, and provides theoretic reference proposals for further revision of the standards and the practical engineering application.

Keywords:concrete splint; seismic strengthening; brick wall; reinforcement coefficient; difference analysis

*國家科技支撐計(jì)劃項(xiàng)目（2015BAL02B02）。

作者簡(jiǎn)介：丁保安，碩士研究生，Email:957341739@qq.com。