高强混凝土梁抗剪承载力研究:Ⅰ无腹筋梁  

Research on shear strength of high strength concrete beams:Ⅰ Beam without web reinforcement

作　　者：吕艳梅[1] 易伟建[2] 

机构地区：[1]广东省建筑设计研究院,广州510010 [2]湖南大学,长沙410082

出　　处：《建筑结构》2009年第S2期129-133,共5页Building Structure

摘　　要：收集了国内外文献中的337根集中荷载作用下无腹筋梁的剪切破坏试验数据,将所有试验梁的试验结果与我国规范GB50010-2002、美国规范ACI318-05、欧洲规范EC2-02以及Zsutty公式的预测结果进行比较,分析各计算方法的优缺点,以及对各抗剪承载力影响因素的考虑是否得当。结果表明:Zsutty方法的预测结果最为精确,其次是我国规范GB50010-2002方法,美国规范ACI 318-05和欧洲规范EC2-02的预测结果比较保守;四种预测方法的对于纵筋配筋率小于1%的梁、有效高度较大的深梁,预测结果安全度偏低。Experimental data of 337 beams without web reinforcement in shear failure was collected.The testing results are compared with failure shear strength calculated by GB50010-2002,ACI318-05,EC2-02,and Zsutty equation,not only the advantages and disadvantages of these methods but also the feasibility of these considerations on influential variables of shear strength are analyzed.The analysis results show that Zsutty equation has the best prediction for shear strength of concrete beams,in the next place is GB code equation,and ACI and EC code equation underestimates the shear strength of beams.Besides,four methods are unsafe for beams with longitudinal reinforcement ratios less than 1% and deeper beams with larger effective depth.

关 键 词：高强混凝土 无腹筋梁 抗剪承载力 

分 类 号：TU375.1[建筑科学—结构工程]