一个具有轴压比和配筋率参数的开裂弯矩计算公式  

Calculation and Analysis for Cracking moment of Concrete Compressive and Flexural Member

作　　者：龙炳煌[1] 范华冰[1] 

机构地区：[1]武汉理工大学,武汉430070

出　　处：《工程建设与设计》2006年第6期27-29,共3页Construction & Design for Engineering

摘　　要：根据钢筋混凝土矩形截面压弯构件的基本方程,导出了压弯构件的开裂弯矩表达式,通过计算,给出了开裂弯矩与混凝土强度等级、轴压比和配筋率之间的变化规律,从而得出了具有配筋率和轴压比参数的开裂弯矩计算公式,该公式形式简单,与试验结果符合较好。With the basic formula of rectangular section concrete member with compression and flexure, the calculation formula of cracking moment of concrete compressive and flexural member was derived. Through calculation, a simplified calculation formula of cracking moment which is on the basis of concrete strength ,axial compression ratio and reinforcing bar ratio was built. The conclusion of this article fit well with the date of the experiment.

关 键 词：压弯构件 开裂弯矩 轴压比 配筋率 

分 类 号：TU375.1[建筑科学—结构工程] TU375.2