考虑矩形箍筋约束作用的足尺混凝土方柱的轴压承载力计算  

Axial compression bearing capacity calculation of full-scale square concrete columns considering rectangular stirrups role

作　　者：邵运达[1] 李淑 闫晓宇[1] 

机构地区：[1]国家开放大学,北京100039

出　　处：《建筑科学》2017年第11期118-122,共5页Building Science

基　　金：国家青年自然科学基金资助项目（51408378）,河北省自然科学基金资助项目（E2015403018）

摘　　要：为了进一步完善箍筋约束作用下混凝土柱方柱的轴压承载力计算方法，完成了5个箍筋约束足尺混凝土柱试件的轴心受压试验，测得了试件的极限承载力，提出了考虑箍筋约束作用的足尺混凝土柱的轴压承载力计算公式。试验结果表明：各试件的极限承载力均大于规范公式计算值，且配箍率是影响试件极限承载力的重要因素，配箍率大，试件的极限承载力大，其中试件B-100（12）的极限承载力为规范公式计算值的1．56倍，充分说明计算足尺混凝土方柱的承载力时，应考虑箍筋约束作用的影响。In order to further improve the calculation method of confined concrete column under the axial bearing capacity of square column, 5 full-scale concrete square columns under axial compression test are completed, the ultimate load-carrying capacity are measured, and the calculation formula of axial compression bearing capacity, which considers the effect of stirrups, is put forward. The test results show that： the ultimate bearing capacity of each specimen is greater than the calculated value of the standard formula, and stirrup ratio is an important factor affecting the ultimate bearing capacity of specimens, the stirrup ratio is bigger, the ultimate bearing capacity is bigger also, Wherein the bearing capacity ultimate bearing of specimen B-100（12） reaches 1.56 times of standard formula. It is concluded that the calculation of the bearing capacity of full-scale square concrete columns should consider the binding effect of stirrups.

关 键 词：箍筋 约束 足尺 混凝土方柱 承载力 

分 类 号：TU312[建筑科学—结构工程]