黑龙江省齐建安装工程公司读者梁兵同志来信询问如何设计钢筋混凝土水平曲梁,现答复如下。 一般设计钢筋混凝土直线形梁,都是认定在梁的横截面上有一竖向形心轴,它和梁的纵向轴线形成一个梁的竖向对称平面。所有的外荷载都是作用于这个平面内的竖向荷载,普通直线形梁受到竖向外荷载的作用,在其横截面内产生的内力有弯矩(M)和剪力(V)。这种直线形梁,读者都会设计。现在有一工程,需要做一个半圆形的阳台,挑出尺寸比较大,完全用悬臂板挑出,板厚太厚。故 Comrade Liang Bing, a reader of Heilongjiang Provincial Qijian Installation Engineering Company, wrote a letter asking how to design a horizontal beam of reinforced concrete. The reply is as follows. The general design of reinforced concrete rectilinear beams is based on the assumption that there is a vertical mandrel on the cross-section of the beam, which forms a vertical symmetry plane with the longitudinal axis of the beam. All external loads are vertical loads acting in this plane. Ordinary linear beams are subjected to vertical outward loads. The internal forces generated in the cross section are bending moment (M) and shear force (V). This kind of linear beam, the reader will design. Now there is a project that needs to make a semi-circular balcony, picking out a relatively large size, completely out of the cantilever plate, and the plate thickness is too thick. So