配置HRB600非预应力钢筋的有粘结预应力混凝土梁受弯试验研究  

Flexural Experiment Study of Bonded Prestressed Concrete Beams with HRB600 Non-prestressed Steel Bar

作　　者：李强[1,2] 戎贤[1] 

机构地区：[1]河北工业大学土木工程学院,天津300401 [2]唐山学院土木工程学院,河北唐山063000

出　　处：《建筑科学》2016年第11期59-65,共7页Building Science

基　　金：河北省高等学校科学技术研究重点项目(ZD2010123);河北省交通运输厅科技计划项目(Y-2011052);河北省交通运输厅科技计划项目(Y-2012041);河北省建设科学技术研究计划(2014-123)

摘　　要：通过配置HRB600非预应力钢筋的有粘结预应力混凝土梁受弯试验,分析了试验梁的受弯性能和裂缝开展规律、HRB600钢筋应变和混凝土应变,讨论了现行《公路钢筋混凝土及预应力混凝土桥涵设计规范》中抗弯承载力计算公式的适用性。试验结果表明:配置HRB600非预应力钢筋的有粘结预应力混凝土梁受力性能良好,可以按照现行规范计算抗弯承载力,且具有足够的安全储备。HRB600钢筋与预应力钢绞线能够协同工作,有效提高试验梁的抗弯承载力。According to flexural experiment of bonded prestressed concrete beams with HRB600 steel bar, the flexural performance, law of crack developing, HRB600 steel strain and concrete strain are analyzed. Suitability of calculation formulas about flexural capacity in current Code for Design of Highway Reinforced Concrete and Prestressed Concrete Bridges and Culverts is discussed. Experimental results indicate that, the bonded prestressed concrete beams with HRB600 steel bar behave well, and have enough safety margin to calculate flexural capacity according to current Code. HRB600 steel bar and prestressed steel strand can work cooperatively and improve flexural capacity of beams.

关 键 词：HRB600钢筋 有粘结预应力混凝土 预应力钢绞线 抗弯承载力 

分 类 号：TU511.32[建筑科学—建筑技术科学]