钢筋混凝土圆形截面受弯构件的最小配筋率

Minimum steel ratio in RC beams for circular section

依据钢筋混凝土受弯构件的极限承载弯矩不小于相同条件下素混凝土受弯构件的开裂弯矩的原则 ,导出了钢筋混凝土圆形截面受弯构件的最小配筋率 ,结果表明圆形截面的最小配筋率比矩形截面大。为设计钢筋混凝土圆形截面受弯及偏心受压构件提供了依据 ,并填补了“规范”

The minimum steel ratio in RC beams for circular cross section is studied,according to the principle of which the flexure strength of RC beams is not less than the cracking moment of plain concrete beam under the same conditions. The result can be applied to the designs of RC beams and eccentric columns.