500MPa钢筋高强混凝土无腹筋梁抗剪试验研究

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基金项目:

十一五国家科技支撑课题(2008BAE61B05-04)

EXPERIMENTAL STUDY ON SHEAR BEHAVIOR OF HIGH-STRENGTH CONCRETE AND HRBF500 STEEL BEAMS WITHOUT WEB REINFORCEMENT

1.
1. School of Civil Engineering,Hefei University of Technology,Hefei 230009,China;
2.
2. Anhui Provincial Civil Structural and Material Laboratory,Hefei 230009,China;
3.
3. China Academy of Building Research,Beijing 100013,China

摘要: 为了研究高强钢筋高强混凝土无腹筋梁抗剪性能,进行了6根不同剪跨比梁在集中荷载下抗剪性能试验。观察了试件从裂缝出现到失去承载力全过程的试验现象,分析了试件在各级荷载下的纵筋应变值、挠度值以及抗剪承载力。将抗剪强度试验结果与GB 500102010《混凝土结构设计规范》计算结果进行了比较分析,结果表明:借用GB 500102010公式计算小剪跨比和大剪跨比的无腹筋双高钢筋混凝土试件梁抗剪强度与实测抗剪强度出入较大。
- 高强混凝土 /
- 无腹筋梁 /
- 抗剪强度
Abstract: In order to study the shear performance of high-strength concrete and HRBF500 steel beams without web reinforcement,6 beams with different shear span ratio were tested under the concentrated load.The whole process from the appearance of cracks to breakage of the beams was observed,the strain of main reinforcement,deflection and shear capacity were analyzed.Then,the test results were compared with the shear strengths predicted by the code (GB 50010－2010) .The results showed that the shear strengths of beams of smaller span-to-depth ratios and larger span-to-depth ratios significantly differed between calculation results and the experimental results．
- high strength concrete /
- beam without web reinforcement /
- shear strength