任意形状截面钢筋混凝土柱的配筋计算方法

建筑科学990609

建筑科学

BUILDING SCIENCE

1999年 第15卷 第6期 Vol.15 No.6 1999

任意形状截面钢筋混凝土柱的配筋计算方法

伍甘棠　王　森　魏　琏

摘　要　本文对工程实际中常见的任意形状柱的正截面配筋计算，给出了一个新的设计方法。该方法以GBJ10-89规范中的四个基本假定为基础，采用分块单元的数学化方法建立起设计内力P、M x、M y与中和轴位置和钢筋面积的关系。计算采用迭代法，同时编制了相应的软件DASC1.0。该程序可对任意形状截面柱在任意荷载下的配筋进行计算，且保证计算结果绝对收敛。文中给出了矩形、T形、L形及其它不规则形状截面柱在纯弯、单向弯曲、双向弯曲作用下的大量算例。计算结果表明，这种方法可以用于进行任意形状双向偏压柱的正截面配筋计算。

关键词　任意形状截面　钢筋混凝土柱　弯曲　单向弯曲　双向弯曲　迭代法New Design Method for Reinforced Concrete Column

of Arbitrary Shape Section

Wu Gantang

(Hong Kong Chung & Ng Consulting Engineers Ltd.)

Wang Sen　Wei Lian

(China Academy of Building Research)

Abstract　A new method of calculating reinforcements is presented in this paper for arbitrary shape column which is often used in practice . The method is based on the four basic assumptions for calculation under flexural in code GBJ10-89. The function between the design force P、M x、M y　and the location of neutral axis and the amount of the steel bar is derived with block element numerical methods . The iteration method is used in calculating steel bar , and software DASC1.0 corresponding to this method is programmed . The software can be used to calculate the reinforcements of column with arbitrary shape section under arbitrary loads , and the results are convergent . Several examples including rectangle 、T-shape、L-shape and other unusual shape column under bending、uniaxial bending and biaxial bending are also presented in this paper . The results show that the new method can be used to calculate the amount of steel bar for arbitrary shape biaxially loaded column under flexural .

Keywords　arbitrary shape section; reinforced concrete column; bending; uniaxial bending ; biaxial bending ; iteration method

1　引　言

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