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（上海市建筑科學(xué)研究院有限公司 上海市工程結(jié)構(gòu)安全重點(diǎn)實(shí)驗(yàn)室， 上海 200032）

［摘要］以無圈梁構(gòu)造柱磚墻為研究對(duì)象，對(duì)比了采用不同形式的纖維增強(qiáng)水泥基復(fù)合材料面層加固后磚墻的抗震性能。共開展了1片未加固磚墻、4片纖維增強(qiáng)水泥基復(fù)合材料加固磚墻和1片鋼筋網(wǎng)水泥砂漿加固磚墻的偽靜力試驗(yàn)。結(jié)果表明，采用纖維增強(qiáng)水泥基復(fù)合材料面層加固磚墻可以顯著提高磚墻的承載能力和變形能力；單面全墻面面層加固對(duì)原墻體抗震性能的提升最為顯著，加固后磚墻的承載能力和極限變形能力分別是原墻體的1.89倍和1.96倍；單面圈梁構(gòu)造柱位置條帶式面層加固與鋼筋網(wǎng)水泥砂漿面層加固相比，可更有效地提高磚墻的承載能力和變形能力?；谠囼?yàn)結(jié)果，提出了不同加固形式下磚墻受剪承載力計(jì)算公式，計(jì)算值與試驗(yàn)值的最大誤差約8.1%。采用有限元方法對(duì)加固磚墻的受力性能進(jìn)行了數(shù)值分析，得到的極限承載力與試驗(yàn)結(jié)果較為吻合。工程實(shí)際應(yīng)用中，建議優(yōu)先選用單面全墻面面層加固。

［關(guān)鍵詞］纖維增強(qiáng)水泥基復(fù)合材料；磚墻；加固；抗震性能

中圖分類號(hào)：TU973+.31, P315-9文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2021)04-0017-09

Experimental research on seismic performance of brick walls strengthened by fiber-reinforced cement-based composite material surface layer

WANG Zhuolin, LI Xiangmin, GAO Rundong, ZHANG Yongqun, XU Qingfeng

(Shanghai Key Laboratory of Engineering Structure Safety, Shanghai Research Institute of Building Sciences Co.,Ltd., Shanghai 200032, China)

Abstract:Taking the brick wall without ring beams and structural columns as the research object, the seismic performances of the brick walls after strengthening with different forms of fiber-reinforced cement-based composite material surface layer were compared. A total of 1 piece of unstrengthened brick wall, 4 pieces of fiber-reinforced cement-based composite materials strengthened brick walls and 1 piece of reinforced mesh cement mortar strengthened brick wall were carried out in pseudo-static tests.  The results show that the use of fiber-reinforced cement-based composite material surface layer to strengthen the brick wall can significantly improve the bearing capacity and deformation capacity of the brick wall; the single-sided full wall surface layer strengthening improves the seismic performance of the original wall most significantly, and the bearing capacity and ultimate deformation capacity of the strengthened wall are 1.89 times and 1.96 times that of the original wall respectively; strip-type surface layer strengthened at the single-sided ring beam and structural column position can be more effective than the strengthening of the reinforced mesh cement mortar surface layer in improving the bearing capacity and deformation capacity of the wall. Based on the test results, a formula for calculating the shear capacity of the brick wall under different strengthening forms  was proposed. The maximum error between the calculated value and the test value was about 8.1%. The finite element method was used to numerically analyze the mechanical performance of the strengthed wall. The ultimate bearing capacity obtained was in good agreement with the test results. In practical engineering applications, it is recommended to use single-sided full wall surface layer strengthening first.

Keywords:fiber-reinforced cement-based composite material;brick wall;strengthening;seismic performance

*國(guó)家重點(diǎn)研發(fā)計(jì)劃項(xiàng)目(2017YFC0702900)，上海市優(yōu)秀技術(shù)帶頭人計(jì)劃項(xiàng)目(18XD1422800)，上海市工程結(jié)構(gòu)安全重點(diǎn)實(shí)驗(yàn)室自選課題（2015-ZX01）。

作者簡(jiǎn)介：王卓琳，博士，正高級(jí)工程師，Email：wzllzw@163.com。