篐筋能有效提高其破坏荷载，但对初裂荷载提高不明显。
The presence of hoop steel can effectively improve damage load of joint, but for the early cracked load is not obvious .
测定了在不同纤维掺量下混凝土梁的初裂冲击次数、破坏冲击次数以及冲击能。
The initial-crack, fracture impact cycle number and impact energy of these concrete beams with different fiber dosages are also tested.
不仅推出了初裂强度、极限强度的计算公式，而且还给出了钢纤维混凝土的损伤本构方程。
The calculation formulae of initial crack and limit strength are derived. The foundation equation of harm mechanics of steel fiber concrete is given here.
基于8个钢筋混凝土框架异型节点的试验，分析了异型节点的初裂与常规节点的不同之处。
On the basis of experiment of 8 abnormal joints of reinforced concrete frame, the anti-crack properties of the abnormal joints and normal joints are discussed.
结果表明：混凝土轴拉初裂强度分别随钢纤维体积率的增大和混凝土强度等级的提高而增大。
It shows the axial tension initial cracking strength of concrete increases with the increasing of steel fiber volume ratio and enhancing of concrete strength grade separately.
该理论不仅可以给出复合材料的初裂强度和极限强度，而且还能给出复合材料的应力-应变曲线。
Not only the strength at first crack and ultimate strength can be calculated, but the stress-strain curve of composite material can be established.
轴压比对节点的抗震性能有利，它可以提高节点的初裂荷载、抗剪承载力、减小节点中梁筋的粘结滑移量。
Axial compressive ratio is advantageous to seismic behavior of staggered joints. It can improve joints first crashing loads, shear resistance capacity and reduce the sliding displacement of beam bars.
对轻骨料高强度钢纤维混凝土的抗压强度、初裂强度、弯曲强度、弹性模量和弯曲韧性指数等主要力学指标进行了试验研究。
The flexural strength, first crack strength, modulus of elasticity and flexural toughness of high-strength lightweight fiber-reinforced concrete were investigated.
借助弯曲荷载-挠度全曲线，分析了纤维掺量和类型对韧性指数和初裂荷载的影响。结果表明，钢纤维混凝土的抗弯初裂强度、极限强度和弯曲韧性均随纤维掺量的增大而提高。
Through the load-deflection curves of SFRC, the effects of fiber kinds and fiber content on the first-crack strength and the flexural toughness of SFRC were contrasted with those of concrete.
借助弯曲荷载-挠度全曲线，分析了纤维掺量和类型对韧性指数和初裂荷载的影响。结果表明，钢纤维混凝土的抗弯初裂强度、极限强度和弯曲韧性均随纤维掺量的增大而提高。
Through the load-deflection curves of SFRC, the effects of fiber kinds and fiber content on the first-crack strength and the flexural toughness of SFRC were contrasted with those of concrete.
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