复合砂浆钢筋网加固RC简支梁抗剪性能的试验研究  

Experimental Study on Shear Behaviors of RC Beams Strengthened with Ferrocement Mortar

作　　者：卜良桃[1] 王月红[1] 

机构地区：[1]湖南大学土木工程学院,湖南长沙410082

出　　处：《华中科技大学学报（城市科学版）》2006年第4期35-38,共4页Journal of Huazhong University of Science and Technology

基　　金：高等学校博士学科点专项科研基金资助项目(20020532008);湖南省科技厅科技重点科研基金资助项目(05SK2010);长沙市科技局科研基金资助项目(K051033-12)

摘　　要：复合砂浆钢筋网薄层加固是一种有效的新型加固方法,能够显著地提高钢筋混凝土梁的抗剪承载力以及抗裂性能.在6根复合砂浆钢筋网加固RC简支梁和1根对比梁的试验基础上,研究了加固梁各种参数对梁极限抗剪承载力的影响,并分析对比了各组加固梁的破坏形态、斜裂缝、荷载-跨中挠度曲线的变化规律.给出了复合砂浆钢筋网加固RC梁的极限抗剪承载力计算公式,计算结果与试验结果吻合较好.Ferrocement mortar technology is an efficient method to reinforce RC beams, which can obviously increase the shear load-carrying capacity and crack-resisting behavior. Based on experimental study of 6 RC beams strengthened with ferrocement mortar and one comparative RC beam,the influence of kinds of parameters on the ultimate shear load-carrying capacity was analyzed. Subsequently, the rules of failure forms, diagonal crack width and load-deflection curves of strengthened beam were analyzed. A computational expression of the shear load-bearing capacity of RC beam strengthened with ferrocement mortar is proposed. The calculated results are fit together well with the experimental results.

关 键 词：复合砂浆 钢筋网 钢筋混凝土梁 抗剪加固 

分 类 号：TU317[建筑科学—结构工程] TU376