基于实测数据的中、美、欧、新规范高强混凝土梁抗剪能力计算比较

Comparison of shear strength calculation method of high-strength concrete beams based on test data among Chinese,American,European and New Zealand’s codes

收集各国高强混凝土梁的斜截面抗剪试验结果,基于数据对于中国《混凝土结构设计规范》（GB 50010—2010）、美国ACI 318-11规范、欧洲EN 1992-1-1∶2004规范和新西兰NZS 3010∶2006规范中钢筋混凝土梁斜截面抗剪能力计算进行了对比,并从多种角度对四种规范进行了评价。结果表明：由于高强混凝土的脆性较为显著,四种规范均未能考虑抗剪性能随混凝土强度的增加先增加后减小的现象,且各自存在不同的不足之处,均需要进一步完善。

Comparison of shear strength calculation method of RC beams among Chinese Code for design of concrete structures（ GB 50010—2010）,American Code ACI 318-11,European Code EN 1992-1-1∶ 2004 and New Zealand Code NZS 3010∶2006 was studied based on the collected test data of high-strength concrete beams in various countries. Shear strength calculation methods of RC beams in four codes were also evaluated. Shear capacity of high-strength concrete beams increases at first and then decreases with the increase of concrete strength for the brittleness of high-strength concrete is higher than ordinary concrete. The results indicate that these four calculation methods have all failed to take that into account and each of them has different deficiencies,hence the modification should all be further adopted.