玻璃纤维增强材料管劲性钢筋混凝土组合柱轴心受压试验研究  

EXPERIMENTAL RESEARCH ON STEEL-REINFORCED CONCRETE FILLED GFRP TUBE COLUMNS SUBJECTED TO AXIAL LOADING

作　　者：陈百玲[1] 王连广[1] 秦国鹏[1] 

机构地区：[1]东北大学资源与土木工程学院,沈阳110004

出　　处：《工业建筑》2011年第10期1-5,共5页Industrial Construction

基　　金：国家教育部博士点基金项目(20050145012)

摘　　要：对8根组合柱进行试验,研究玻璃纤维增强材料(GFRP)管劲性钢筋混凝土组合柱的轴心受压性能。研究结果表明:荷载作用初期,GFRP管、混凝土及型钢单独受力,当荷载达到极限荷载60%左右时,GFRP管的纤维表面出现白纹,当荷载达到极限荷载的70%左右时,GFRP管对混凝土的套箍作用明显增加,当荷载达到极限荷载80%左右时,GFRP管出现频繁的响声,试件的破坏开始于GFRP管破裂、钢材屈服、混凝土压碎。编制组合柱的非线性分析程序,模拟计算结果与试验结果吻合良好。组合柱的承载力随着GFRP管壁厚度的增加、混凝土强度等级的提高及含钢率的增加而提高。According to the experimental research on 8 composite columns,the axial compression property of GFRP tube filled with steel reinforced concrete was studied. The test results show that GFRP tube, concrete and section steel carry loads alone at the beginning of loading. Then the fiber surface of GFRP tube grows stretch marks when the loads reach 60% ultimate loads and GFRP tube has an obvious hooped effect on concrete when the loads reach 70% ultimate loads. While the loads reach 80% ultimate loads, GFRP tube can generate frequent noise. The damage of test specimen begins with the fracture of GFRP tube, the yield of steel and the crushing of concrete. The nonlinear analysis program of composite columns was developed, and the calculated results agree well with the experimented resuhs. According to the computing and analyses, the bearing capacity of composite columns is enhanced with the increase of GFRP tube wall thickness, concrete strength grade and steel ratio.

关 键 词：GFRP管 钢筋混凝土 组合柱 轴心受压 试验研究 

分 类 号：TU398.9[建筑科学—结构工程]