GFRP-微珠泡沫组合柱轴压试验研究

玻璃钢/复合材料 ›› 2017, Vol. 0 ›› Issue (7): 55-59.

GFRP-微珠泡沫组合柱轴压试验研究

何文涛, 王俊^*, 刘伟庆, 李梦婷

南京工业大学土木工程学院,南京211816

收稿日期:2017-01-20 出版日期:2017-07-28 发布日期:2017-07-28
通讯作者: 王俊(1976-),女,博士,教授,主要从事复合材料结构研究,wangjun3312@njtech.edu.cn。
作者简介:何文涛(1991-),男,硕士生,主要从事复合材料结构研究。
基金资助:
国家自然科学基金面上基金(51578283)

AXIAL COMPRESSIVE PROPERTIES OF GLASS FIBER-REINFORCED POLYMER-MACROFOAM COMPOSITE COLUMNS

HE Wen-tao, WANG Jun^*, LIU Wei-qing, Li Meng-ting

College of Civil Engineering, Nanjing Tech University, Nanjing 211816, China

Received:2017-01-20 Online:2017-07-28 Published:2017-07-28

摘要/Abstract

摘要： 通过对2根微珠泡沫柱以及7根玻璃纤维(GFRP)-微珠泡沫组合柱进行轴向压缩试验研究,探讨了各类柱的破坏形态、荷载-位移曲线以及吸能特性,并分析了GFRP纤维包裹层数、微珠泡沫芯材密度以及纤维纵横向铺层比例对试件受力特征的影响。结果表明,GFRP包裹层的使用使得柱的破坏呈现出典型的三阶段破坏,改变了无包裹柱45°断裂破坏模式。GFRP层数、微珠泡沫密度以及包裹层横向纤维比例的增加,均使得构件的承载力、总吸能以及比吸能得到了提高。当纤维铺层从0层增加到2层和4层时,其极限承载力分别提高了71.02%和86.04%,吸收的能量也得到明显提高。行程利用率仅在微珠泡沫密度发生改变时有明显变化——随着密度的增加,行程利用率减小。

关键词: 微珠泡沫, 轴压试验, 比吸能, 行程利用率

Abstract: A series of axial compressive tests were conducted on two macrofoam columns and seven GFRP-Macrofoam columns. The failure modes, load-displacement curves and the characteristic of energy absorption of the tested specimens under compressive loads were presented. Influences of the numbers of GFRP layers, foam density and different horizontal fiber layer ratios were discussed herein. The test results show that with the using of GFRP, the deformation modes of columns change from the 45°-fracture to the typical three-stages. The carrying capacities, the total energy absorption and the specific energy absorption of specimens will increase as the layers of GFRP, foam density or horizontal fiber layer ratios increase. As the layers of GFRP increase from 0 to 2 and 4, respectively, the load capacity of specimens increases by 71.02% and 86.04% , and the energy absorption capacity are improved significantly. The density of macrofoam has a significant effect on stroke utilization. As the density increases, the stroke utilization decreases.

Key words: macrofoam, axial compressive test, specific energy absorption, stroke utilization

中图分类号:

TB332

何文涛, 王俊, 刘伟庆, 李梦婷. GFRP-微珠泡沫组合柱轴压试验研究[J]. 玻璃钢/复合材料, 2017, 0(7): 55-59.

HE Wen-tao, WANG Jun, LIU Wei-qing, Li Meng-ting. AXIAL COMPRESSIVE PROPERTIES OF GLASS FIBER-REINFORCED POLYMER-MACROFOAM COMPOSITE COLUMNS[J]. Fiber Reinforced Plastics/Composites, 2017, 0(7): 55-59.

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