中文摘要：

采用MTSS10和直径为74mm的大尺寸SHPB实验装置，对超短钢纤维混凝土进行了动静态力学性能实验。基于所测的应力-应变曲线，对钢纤维混凝土在不同应变率下的弹性模量、峰值应力、峰值应变和韧度变化规律进行了探讨。此外，根据曲线特点提出了一种含损伤本构模型。

英文摘要：

The quasi-static and dynamic mechanical properties of ultra short steel fiber reintorced concrete were investigated by using MTSS10 and Ф74mm SHPB. Based on the stress - strain curves, the variation laws of elasticity modulus, peak stress, peak strain and toughness under different strain rates have been discussed. Besides, a damagc constitutive model was proposed for steel fiber reinforced concrete according to the curve features.