高阻尼混凝土构件阻尼性能研究

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振动与冲击 ›› 2012, Vol. 31 ›› Issue (11) : 173-179.

论文

高阻尼混凝土构件阻尼性能研究

汪梦甫, 宋兴禹

作者信息 +

Experimental research on damping property of High Damping Concrete Members

Wang Meng-fu, Song Xing-yu

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文章历史 +

摘要

首先测得了钢筋、高阻尼砂浆及高阻尼混凝土悬臂梁在不同初始顶点位移下的自由衰减曲线，得到了构件阻尼比随变形增大的变化规律。研究了聚灰比、乳液共混及不同纤维的掺入对高阻尼混凝土悬臂梁力学性能和阻尼性能的影响。在此基础上，提出了高阻尼混凝土构件阻尼比的计算理论与方法。通过与国内外相关研究的比较，校验了本文方法的科学性。

Abstract

Three groups of displacement decay curves, corresponding to rebars, mortar cantilever beams and concrete cantilever beams under different vertex displacements were measured; and the variation law of damping ratio and deformation (including plastic deformation ) of high damping Concrete members on plastic stage were obtained. In addition, the influences of polymer-cement ratio, latex blend and different fiber on compressive strength and damping ratio of Concrete were analyzed. Based on these results, some new calculation formula for damping ratio of concrete members was proposed. The comparison of the relevant researches at home and abroad was given to demonstrate the validity of the proposed method in this paper.

导出引用

汪梦甫; 宋兴禹. 高阻尼混凝土构件阻尼性能研究[J]. 振动与冲击, 2012, 31(11): 173-179

Wang Meng-fu; Song Xing-yu . Experimental research on damping property of High Damping Concrete Members [J]. Journal of Vibration and Shock, 2012, 31(11): 173-179