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(1 哈爾濱工業(yè)大學(xué)土木工程學(xué)院,哈爾濱 150090; 2 上海電氣工程設(shè)計有限公司,上海 200241)
[摘要]通過兩片T形截面墻片在恒定豎向荷載下的低周反復(fù)荷載試驗(yàn),研究了墻片發(fā)生剪切破壞時的破壞過程、破壞形態(tài)、受力性能、變形能力和耗能能力。試驗(yàn)結(jié)果表明,發(fā)生剪切破壞時,配筋砌塊短肢砌體剪力墻與鋼筋混凝土短肢剪力墻具有相似的破壞形態(tài)。根據(jù)國內(nèi)59片符合配筋砌塊短肢砌體剪力墻基本要求的配筋砌塊砌體剪力墻抗剪承載力試驗(yàn)數(shù)據(jù),考慮了灌孔砌體強(qiáng)度、剪跨比、豎向壓力、水平鋼筋等因素的影響,給出了與試驗(yàn)數(shù)據(jù)吻合較好的配筋砌塊短肢砌體剪力墻抗剪承載力計算公式。
[關(guān)鍵詞]配筋砌塊砌體;配筋砌塊短肢砌體剪力墻;抗剪性能;低周反復(fù)荷載試驗(yàn);抗剪承載力
Experimental research on shear capacity of reinforced block shortleg masonry shear wall
Wang Fenglai1, Xu Xiangxun2(1 School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China;2 Shanghai Electric Engineering Consulting Co., Ltd., Shanghai 200241, China)
Abstract:Under constant vertical loading, the pseudo-static tests of two T cross-section samples were carried out to study the shear performance of reinforced block short-leg masonry shear wall. The failure process and mode, capacity, load-deformation relationship, and energy-dissipation capabilities were studied in the shear failure tests. Experimental results show that the failure mode and ductility of the reinforced block short-leg masonry shear wall are similar to that of the reinforced concrete short-leg shear wall. Based on the shear capacity data of the collected 59 shear failure tests of reinforced concrete masonry shear walls which are included in reinforced block short-leg masonry shear wall, formula for shear capacity is proposed taken into the factors including masonry strength, shear span ratio, vertical load, and horizontal reinforcement. The formula shows a good correlation with the experimental data.
Keywords:reinforced masonry; block short-leg masonry shear wall; performance; pseudo-static test; capacity
作者簡介:王鳳來(1971-),男,黑龍江省寧安人,博士,教授,從事砌體結(jié)構(gòu)和土木工程診治與改造技術(shù)研究,Email:wflai@sina.com。
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