FLEXURAL BEHAVIOR OF HIGH-STRENGTH FIBER-REINFORCED CONCRETE BEAMS

被引：2

作者：

ASHOUR, SA

WAFA, FF

机构：

来源：

ACI STRUCTURAL JOURNAL | 1993年 / 90卷 / 03期

关键词：

BEAMS (SUPPORTS); COMPRESSIVE STRENGTH; CRACKING (FRACTURING); DEFLECTION; DUCTILITY; FIBERS; FLEXURAL STRENGTH; HIGH-STRENGTH CONCRETES; HINGES (STRUCTURAL); MOMENTS OF INERTIA; REINFORCED CONCRETE; RIGIDITY;

D O I：

暂无

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The effect of inclusion of steel fibers on the flexural behavior of high-strength concrete beams is investigated. Eight high-strength concrete beams with different fiber contents and shear span-depth ratios were tested to study the influence of fiber addition on ultimate load, crack propagation, flexural rigidity. and ductility. The concrete matrix compressive strength was about 88 MPa (12,800 psi). The addition of steel fibers enhanced the strength and increased the ductility and flexural stiffness of the tested beams A semi-empirical equation is proposed to estimate the effective moment of inertia of simply supported high strength fiber reinforced concrete beams. The estimated deflections using this equation agree well with the experimental values. At ultimate conditions, the length of the plastic hinge developed was found to be proportional to the fiber content.

引用

页码：279 / 287

页数：9