GFRP-微珠泡沫组合柱抗车辆撞击仿真与优化设计  

Simulation and optimized design of vehicle impact resistance of GFRP-syntactic foam composite column

作　　者：陈志林 王俊[1] CHEN Zhilin;WANG Jun(College of Civil Engineering, Nanjing Tech University, Nanjing 211800, China)

机构地区：[1]南京工业大学土木工程学院,江苏南京211800

出　　处：《南京工业大学学报（自然科学版）》2020年第5期642-648,共7页Journal of Nanjing Tech University(Natural Science Edition)

基　　金：国家自然科学基金(51578283);南京市建委科研项目(Ks2008,Ks2025)。

摘　　要：近年来,国内外桥梁碰撞事故频繁发生,对桥墩造成破坏甚至导致桥梁垮塌,造成人员伤亡及经济损失。本文以玻璃纤维增强复合材料(GFRP)-混凝土组合柱为参照柱,在满足GFRP-微珠泡沫组合柱吸能不小于参照柱的条件下,对其进行精细化模拟及优化设计。结果表明:优化后的GFRP-微珠泡沫组合柱不仅具有与GFRP-混凝土组合柱同样的吸能能力,还可以大幅削减冲击力峰值,提高冲击持续时间和比吸能,降低对撞击车船和人身的损害,达到轻质高强、吸能能力强的效果。The accidents due to collision in bridge piers occur frequently,which leads to the damage of bridge piers and even the collapse of bridges,resulting in casualties and economic losses.Glass fiber reinforced polymer(GFRP)-syntactic foam composite column was simulated and optimized by taking GFRP-concrete column as the reference column,under the condition that its energy absorption was no less than that of the reference column.It revealed that the optimized GFRP-syntactic foam composite column not only had the same energy absorption capacity as the GFRP-concrete column,but also reduced the peak force of impact and increased the impact duration and specific energy absorption.Optimized GFRP-syntactic foam column achieved the effect of light weight,high strength and high energy absorption ability,and reduced the damage of the impact.

关 键 词：抗撞桥墩 玻璃纤维增强复合材料(GFRP) 微珠泡沫 组合柱 吸能能力 

分 类 号：TU398.1[建筑科学—结构工程]