部分预应力混凝土圆形柱的力学性能

MECHANICAL PROPRTIES OF PARTIALLY PRESTRESSED CONCRETE CIRCULAR COLUMNS

为了抵抗强震作用，必须使结构物具有良好的延性和变形恢复性。本研究的主要目的在于研究采用了圆形螺旋箍筋的部分预应力混凝土柱在大变形领域的多次重复载荷作用下的力学性能。本文介绍了关于这种柱的试验概要，并对其破坏过程、荷载一位移关系滞回曲线的特性、塑性铰区域内外的变形特性等试验结果作了若干讨论。

To survive a severe earthquake a structure should be designed, whose members possess characteristics of excellent ductility and almost complete deflec tion recovery. The object of this study is to investigate the mechanical properties of partially prestreSsed concrete colunms with circular spiral confining reinforced bythe experimental work, in which the columns were subjected to high intensity reversed repeated latchal load and constant axial load.In this paper, the experimental work and a part of experimental results are described, which include the failure process, the deflection behavior and the defomation characteristics in the equivalent plastic hinge zone.