玻璃纤维(GFRP)片材约束混凝土的受力性能分析  

ANALYSIS OF FLEXURAL BEHAVIOR OF CONCRETE BEAM RESTRAINED WITH GLAS FIBER REINFORCED PLASTIC SHEET

作　　者：欧阳煜[1] 黄奕辉[2] 钱在兹[3] 顾祥林[4] 张誉[4] 

机构地区：[1]上海大学 [2]华侨大学 [3]浙江大学 [4]同济大学

出　　处：《土木工程学报》2004年第3期26-34,共9页China Civil Engineering Journal

基　　金：福建省科委重点工业基金资助项目( 98-Z - 35);福建省建委基金资助项目 (JK - 99- 1 0 )

摘　　要：对耐碱玻璃纤维 (GFRP)片材约束混凝土方形截面柱体进行了轴压试验和理论研究 ,探讨了GFRP片材加固柱的受力性能和侧限机理 ,提出了GFRP片材侧限混凝土的应力 -应变关系。在考虑截面有效约束区和非有效约束区的基础上 ,提出了GFRP片材加固混凝土方柱的轴压极限承载力计算方法 。The concrete square-columns wrapped with anti-alkali glass fiber plastic(GFRP) sheet under axial pressure are studied experimentally and theoretically.The perf orming characteristic and the confinement mechanism of GFRP sheet strengthened c olumns are demonstrated in details, and the stres s-strain relationship of GFRP sheet confined concrete is suggested. By consider i ng the effectively confined area and the ineffectively confined area in the colu mn section, an analytical model to predict the ultimate compression strength of concrete square-columns strengthened with GFRP sheet is developed. The results of the calculation have good match with that of experiments.

关 键 词：GFRP片材 混凝土方柱 应力-应变关系 轴压极限承载力 玻璃纤维片材 受力性能 

分 类 号：TU375.3[建筑科学—结构工程]