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(清華大學(xué)土木工程系 北京 100084)
［提要］ 為研究自密實(shí)混凝土板墻加固低強(qiáng)度砂漿磚砌體的抗剪性能，共做了6個(gè)墻體加固試件。通過(guò)改變豎向壓力、單雙面加固、配筋形式等參數(shù)，研究了不同條件對(duì)試件加固性能的影響。試驗(yàn)結(jié)果表明，低強(qiáng)度磚砌體經(jīng)自密實(shí)混凝土板墻加固后，抗剪承載力和抗側(cè)剛度都有大幅度提高，其中抗剪承載力提高80%～160%。加固后墻體具有良好的延性，滯回耗能能力增強(qiáng)。通過(guò)對(duì)試驗(yàn)結(jié)果的分析研究并與其他類(lèi)似試驗(yàn)進(jìn)行對(duì)比，提出了加固后墻體的抗剪承載力計(jì)算公式。
［關(guān)鍵詞］ 磚砌體加固   自密實(shí)混凝土  混凝土板墻  抗剪強(qiáng)度
Experimental Study on Low Strength Brick Masonry Wall Strengthened with Selfcompacting Concrete Wall/Fu Jie,Wang Zhihao(Civil Engineering Department of Tsinghua University, Beijing 100084, China)
Abstract:The shear behaviors of the low strength brick masonry wall strengthened with the
 selfcompacting reinforce concrete wall have been discussed by 6 experimental models.The experiment provides the data of the strengthening behaviors under different conditions. The major factors are vertical stress, number of strengthening sides, and the quantity of the reinforce. The experimental results show that the strengthened masonry walls have better shear capacity and lateral stiffness. The shear capacity increases 85%～160%. The ductility ratio and dissipative capability of the strengthened walls also increase. According to the analysis of the experimental data, and compared to other similar experiments, some formu
las for shear capacity calculated  are given.
Keywords:strengthened brick masonry wall; selfcompacting concrete; reinforce concrete wall; shear capacity