高强钢筋高强混凝土简支梁抗剪试验研究*
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叶献国1,2，张煜1，种迅1，蒋庆1，黄小坤3，刘刚3（1 合肥工业大学土木与水利工程学院， 合肥 230009； 2 安徽土木工程结构与材料省级实验室， 合肥 230009； 3 中国建筑科学研究院， 北京 100013）［摘要］为研究高强钢筋高强混凝土简支梁的抗剪性能，设计了5根同时采用HRBF500级高强钢筋和C80高强混凝土的简支梁，并对其进行了集中荷载作用下的剪切破坏试验，分析了不同配箍率和不同纵筋配筋率对于试件裂缝、破坏形态、挠度及承载力的影响，并将承载力的试验值与我国《混凝土结构设计规范》（GB 50010—2010）及美国ACI 318-08规范进行对比。结果表明，试验梁的破坏形态与普通梁相似，抗剪承载力随配箍率的增大而提高，按我国《混凝土结构设计规范》（GB 50010—2010）和美国ACI 31808规范计算的承载力与实测承载力存在一定差异。［关键词］简支梁； 高强混凝土； 高强钢筋； 受剪承载力中图分类号：TU375 文献标识码：A 文章编号：1002-848X(2013)08-0048-03Experimental study on shear behavior of simple supported high-strength concrete beams with high-strength steelYe Xianguo1,2, Zhang Yu1, Chong Xun1, Jiang Qing1, Huang Xiaokun3, Liu Gang3(1 School of Civil Engineering, Hefei University of Technology, Hefei 230009, China; 2 Anhui Provincial Civil Structural and Material Laboratory, Hefei 230009, China; 3 China Academy of Building Research, Beijing 100013, China)Abstract: In order to study the shear performance of simple supported high-strength concrete beams with high-strength steel, five simple supported beams which were made by HRBF500 high strength steel and C80 high strength concrete, were tested under the concentrated loads. The effects of different stirrup ratio and the amount of longitudinal reinforcement on the crack, model of failure, deflection and shear capacity were studied. The shear strength of tested beams were compared with the shear design approaches of Chinese Code for design of concrete structures (GB 50010—2010) and American ACI 318-08 Code. The results indicate that the failure model of high-strength concrete beams with high-strength steel is similar to that of normal beams. With increasing of stirrup ratio, the shear strength of beams increases correspondingly. In comparison with the shear capacity observed in the experiment, the results of calculation by Chinese Code for design of concrete structures (GB 50010—2010) and American ACI 318-08 Code are divergent.Keywords: simple supported beam; high-strength concrete; high-strength steel; shear capacity*“十一五”国家科技支撑课题“高强高性能混凝土结构性能研究”（2008BAE61B0504)。参考文献［1］冷发光,王永海,周永祥,等.高强混凝土的研究应用和发展趋势［J］.商品混凝土,2011(2):25-27.［2］GB 50152—92混凝土结构试验方法标准［S］.北京:中国建筑工业出版社,1992.［3］GB 50010—2010混凝土结构设计规范［S］.北京:中国建筑工业出版社,2011.［4］梁兴文,马乐为,邓明科.混凝土结构课程教学中的若干问题［J］.建筑结构,2008,38(S1):72-74.［5］史庆轩,侯炜,姜维山,等.高强箍筋高强混凝土梁受剪承载力研究［J］.建筑结构学报,2009,30(S2):98-103.［6］易伟建,吕艳梅.高强箍筋高强混凝土梁受剪试验研究［J］.建筑结构学报,2009,30(4):94-101.［7］李鹏，王命平,耿树江,等.高强箍筋混凝土简支梁抗剪承载力试验研究［J］.青岛理工大学学报,2009,30(5):20-24.［8］ACI 318-08 Building code requirements for structural concrete and commentary［S］.2008.
