关于双筋矩形截面梁的几个问题

Some problems to double reinforced rectangle section beam

对双筋矩形截面梁受拉钢筋和受压钢筋均未知时纵向钢筋最小总用钢量的设计方法进行了推导,并与通常方法进行了比较.从理论上分析了受压区配筋量对双筋矩形截面梁承载力的影响规律,给出了双筋矩形截面梁极限承载力计算公式.

In the design of double reinforcement rectangle section RC beam, on the condition of tension reinforcement and compression bar is unknown, the design method of the least steel requirements in all was derived. And the method was compared with traditional method. This paper theoretically analyses the influence regularity of bar of compressed area on the bearing capacity of double reinforced rectangle section beam. It puts concepts ultimate bearing capacity of beam, which may be reference for designer.