偏心受压圆截面钢筋混凝土细长柱的计算

Calculation for Reinforcement Concrete Circular Section Slender Column Under Eccentric Compression

随着材料强度的提高和跃层柱的应用,细长柱已不鲜见,细长柱会在材料达到极限强度前发生失稳破坏,因此,细长柱的承载力及配筋计算与中长柱的不同,如果按照《混凝土结构设计规范》的中长柱计算公式进行处理,将造成安全隐患.为此,提出圆截面细长柱配筋的模型法柱计算公式,并按此编制了计算软件.使用该软件计算一工程实例,其计算结果与按理论公式采用手算的结果相同,表明所编软件可靠,为工程设计提供了便利条件.

With the application of high-strength materials in the engineering, the size of the reinforced concrete column＇s section is gradually becoming smaller, specially the use of the jumped floor columns, making the slendemess ratio increased, and often to reach category of slender column. Instability failure often occurred on the slender columns before the strength failure occurred. So the reinforcement calculation for slender columns is different from that for moderate long columns. Slender columns were treated as moderate long columns in design will cause safety concern. Computational formulas of the model column method for circular section slender columns were deduced and software based on it was developed. An engineering example was calculated by the software. The results of the soft- ware were almost the same with the results obtained directly by the formulas of the model method. It shows that the software was presented in this paper was correct, and it can be served for engineering design.