钢板笼约束混凝土组合柱正截面偏心受压承载力分析

Normal Section Bearing Capacity Research of PCS Concrete Columns Under Eccentric Compression Load

在8根偏心受压钢板笼约束混凝土组合柱试验研究的基础上,基于箍筋的拱作用原理和方钢管混凝土承载力的计算方法,参考混凝土结构设计规范中偏心受压柱承载力计算的相关公式,提出钢板笼约束混凝土组合柱偏心受压情况下的正截面承载力计算方法,并将计算结果与试验数据进行对比.结果表明:可采用混凝土结构设计规范提供的方法计算钢板笼约束混凝土组合柱偏心受压承载力,理论计算结果和试验数据吻合地较好.

On the basis of experimental studies of eight concrete columns reinforced with prefabricated cage system（PCS）under eccentric load,and based on the principle of arch action of stirrup and the calculation method of bearing capacity of square concrete-filled steel tube,by comparison with the bearing capacity of columns under eccentric load in concrete structure design code,the calculation method for bearing capacity of PCS concrete columns under eccentric loading is presented,and the calculation results are compared with experimental results.The results show that the lateral confinement of PCS is similar to the confinement of concretefilled square steel,and the calculation results agree well with the test results.