高强混凝土偏心受压柱全过程同步量测试验研究

Full-scale Experimental Studies of Reiforced High-strength Concrete Eccentric Columus with Synchronously Measarements

本文采用等位移控制加载、全过程同步量测的试验方案,完成了共15根高强混凝土偏心受压柱的测试,给出了每个试件的完整试验结果,证实了高强混凝土偏心受压柱存在加载和卸载两个受力过程.试验表明,高强混凝土柱受力及破坏实质上是一个非线性矢稳过程。

The results of a series of 15 full-scale tests on reinforced high-strength concrete columns are reported. For each of these tests, a complete set of synchronously measurements covering the entire rang of loading, are acquired. The tests were controlled by deflection increments when the loads were near and beyond the maximum, or peak value. The mec anics of progressive failure of reinforced high-strength concrete columns is demonstrated through the explanation of the maximum load point, or the Nmax point, which represents the nonlinear stability load of a column, and the maximum strength point, or the Mmax, point, which corresponds to the ultimate strength of the critical cross section.