复合材料-木塑组合柱轴心受压性能试验研究

玻璃钢/复合材料 ›› 2017, Vol. 0 ›› Issue (2): 10-14.

复合材料-木塑组合柱轴心受压性能试验研究

冷远, 齐玉军^*, 刘伟庆, 方海

南京工业大学土木工程学院,南京211816

收稿日期:2016-09-09 出版日期:2017-02-28 发布日期:2017-02-28
通讯作者: 齐玉军(1982-),男,博士,副教授,主要从事新材料与新型结构方面的研究,qiyujun11@163.com。
作者简介:冷远(1988-),男,硕士研究生,主要从事复合材料结构方面的研究。
基金资助:
国家自然科学基金重点项目(51238003);国家自然科学基金项目(51308287);江苏省基础研究计划(自然科学基金)(BK20130936)

EXPERIMENTAL STUDY ON INTERFACE PERFORMANCE OF GFRP COMPOSITE SANDWICH COLUMN WITH WOOD-PLASTIC COMPOSITE CORE

LENG Yuan, QI Yu-jun^*, LIU Wei-qing, FANG Hai

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

Received:2016-09-09 Online:2017-02-28 Published:2017-02-28

摘要/Abstract

摘要： 以木塑复合材料、无碱玻璃纤维织物以及不饱和聚酯树脂为原料,采用真空导入工艺制造复合材料-木塑组合柱。对该组合柱进行轴心受压试验,得到其失效模式、承载力以及纵向变形等力学行为。试验结果表明:复合材料-木塑组合柱在轴压荷载作用下,主要破坏模式为轴向受压破坏,且在复合材料面层出现横向裂纹;组合柱极限承载力随着截面尺寸的增加而显著提高,而且组合柱具有良好的延性。采用考虑组合效应的分析方法对该组合柱的轴压承载力进行预测,结果表明当组合系数取0.3时,理论计算结果与试验结果吻合较好。

关键词: 木塑复合材料, 纤维增强复合材料, 组合柱, 轴压, 组合系数

Abstract: Fibre reinforced polymer (FRP) composite sandwich column which composed of FRP sheets and wood-plastic composite (WPC) core were manufactured using vacuum infusion molding process with wood-plastic composite, alkali-free glass fiber bundle and unsaturated resin. The effects of the WPC core on load-bearing capacity, the failure mode and load-strain curve were investigated using axial compressive tests. The results showed that a failure of axial strength and transverse cracks occurs in the composite sandwich column under axial pressure. The ultimate bearing capacity of the composite sandwich column under axial pressure is related to section size of the column, which is raised with the size. In addition, the lateral deformations of the composite sandwich column is greatly constrained by FRP, so the ductility can be improved. A formula of ultimate bearing capacity of the composite sandwich column was deduced and the predictions of the formula agree well with the test data when the value is 0.3.

Key words: wood-plastic composite (WPC), fibre reinforced polymer (FRP), composite column, axial compression, combination coefficient

中图分类号:

TB332
TB301

冷远, 齐玉军, 刘伟庆, 方海. 复合材料-木塑组合柱轴心受压性能试验研究[J]. 玻璃钢/复合材料, 2017, 0(2): 10-14.

LENG Yuan, QI Yu-jun, LIU Wei-qing, FANG Hai. EXPERIMENTAL STUDY ON INTERFACE PERFORMANCE OF GFRP COMPOSITE SANDWICH COLUMN WITH WOOD-PLASTIC COMPOSITE CORE[J]. Fiber Reinforced Plastics/Composites, 2017, 0(2): 10-14.

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