截面有效抗弯刚度的影响因素分析

采用弯矩曲率分析方法,研究了纵筋率、轴压比和混凝土强度对截面有效抗弯刚度的影响,并分析了截面有效抗弯刚度对纵筋率、轴压比和混凝土强度的敏感性。研究结果表明:截面有效抗弯刚度随纵筋率、轴压比和混凝土强度的增加而增大,截面有效抗弯刚度对纵筋率最为敏感,对混凝土强度的敏感性次之,对轴压比的敏感性最小。

An Analysis of Influence Factors of Section Effective Bending Stiffness

Moment-curvature analysis method is used to study the influence of longitudinal reinforcement ratio,the axial compression ratio and the strength of concrete for effective bending stiffness of section,and the sensitivity of the effective bending stiffness of section to longitudinal reinforcement ratio,the axial compression ratio,and the strength of concrete.Research results show that the effective bending stiffness of section will increase if longitudinal reinforcement ratio,the axial compression ratio and concrete strength increases,and that longitudinal reinforcement ratio is the most sensitive to effective bending stiffness of section,the concrete strength is second,and the axial compression ratio is the minimum.