高强混凝土管柱轴心受力性能试验研究及分析

通过4根高强混凝土管柱长柱的受压全过程试验及2根管柱的受拉全过程试验，研究了高强混凝土受压管柱的正常使用状态及极限状态的受力及变形特征、破坏过程及其承载力。并且研究了高强混凝土受拉管柱在正常使用状态下的变形规律、裂缝开展情况及受拉承载力。通过试验，发现高强混凝土管柱破坏具有突然性。同时用数值积分方法编制了非线性分析程序并分析了9根高强混凝土管柱。结果表明，计算结果与试验数据吻合较好，并且管柱承载力主要取决于混凝土强度及长细比。

Study and analysis on the mechanical behavior of high strength concrete tubular columns under axial load

An experiment on the mechanical behavior of long high strength concrete tubular columns under axial load is carried out, in which 4 columns are crushed, 2 columns are split . The phenomena are observed and the curves of the load and deformation are gotten. The data show that the axial load carrying capacity of the crushed columns is high while their failure is brittle. At the same time, 9 models of the tabular columns are analyzed by using numerical integration method. It is found that the data attained from the models fit well with those from the experiment, and the axial load carrying capacity of the columns is decided by the strength of concrete and the slenderness ratio.