环形截面钢筋混凝土构件的正截面抗弯承载力计算的分区二次逼近法

SECTIONAL QUADRATIC APPROXIMATION FOR THE CALCULATION OF BENDING LOAD OF THE NORMAL SECTION OF REINFORCED CONCRETE COMPONENT WITH ANNULAR CROSS SECTION

普通钢筋混凝土沿周边均匀配置纵向钢筋的环形截面受弯构件,在其正截面抗弯承载力计算中要遇到超越方程的求解问题,一般多用迭代法求解,计算工作量很大。本文采用分区二次逼近法,该法求解迅速,简便实用,且计算精度很高。

The calculation of the bending load of the normal section for the common reinforced concrete component which has a ring-shaped cross-section and is evenly disposd with reinforcing bars along its periphery, involves solving the equation with triangular functions. Generally, the iteration method is used for this and therefore the calculation is very combersome. In this paper, a sectional quadra-tic approximation method is proposed which is fast, simple to use and with very high accuracy.