钢纤维混凝土迭合梁截面剪应力分布规律理论分析

Theoretical Analysis of Shear Stress Redistribution in SFRC Composite Beams

基于二次受力迭合梁斜截面受力性能和钢纤维混凝土材料特性 ,分析了钢纤维混凝土迭合梁截面的剪应力分布规律。与钢纤维混凝土整体梁相比 ,钢纤维混凝土迭合梁存在剪应力“超前”现象 ,其超前值随着第二阶段荷载的增大而逐渐减小 ,直至完全消失。

Based on the double stress of steel fiber reinforced concrete (SFRC) composite beams and their material performance, a law of shear stress redistribution in SFRC composite beams is studied Compared with SFRC general integral beam, SFRC composite beams have a phenomena of “stress excess of tensile steel” The value of stress excess gradually will be decreased with the loading at the secondary stage until complete vanishing