高强混凝土扁柱拟静力试验

Pseudo-Static Test on Flat Columns Made of High-strength Concrete

摘要:

为研究高强混凝土扁柱的抗震性能，以6根1:3的不同轴压比、混凝土强度、剪跨比扁柱试件为研究对象，采用拟静力试验方法，通过对试验现象的观察以及试验数据的处理，定量地从刚度、骨架曲线、滞回曲线、延性、耗能能力等几个方面详细分析了试验试件的抗震性能。研究结果表明，此类构件延性较差，耗能能力差，但在合理构造措施下，破坏形式仍为压弯型，破坏截面符合平截面假定。

Abstract:

In order to research seismic performance of flat column made of high-strength concrete, pseudo- static tests are conducted, which include six 1:3-scaled flat columns with different axial compression ratios, concrete strengths and shear span ratios. By observing the test phenomenon and analysising the data, the seismic performance of the columns including stiffness, skeleton curves, hysteresis curves, ductility and energy dissipation are obtained. It is concluded that flat columns have poor ductility and energy dissipation capacity. Based on the proper seismic measures, failure characteristic is compression-flexure destruction and the failure section conforms to the assumption of plane cross section.