玻璃纤维增强复合材料钢复合筋混凝土夹芯墙板抗弯性能  

Bending behavior of concrete sandwich wall panels with GFRP-steel bar connectors

作　　者：吴超强 王俊[1] 李帅 晋强[3] WU Chaoqiang;WANG Jun;LI Shuai;JIN Qiang(College of Civil Engineering, Nanjing Tech University, Nanjing 211800, China;Kunshan City Construction Investment & Development Group Co. Ltd., Kunshan 215300, China;College of Hydraulic and Civil Engineering, Xinjiang Agricultural University, Urumqi 830000, China)

机构地区：[1]南京工业大学土木工程学院,江苏南京211800 [2]昆山城市建设投资发展集团有限公司,江苏昆山215300 [3]新疆农业大学水利与土木工程学院,新疆乌鲁木齐830000

出　　处：《南京工业大学学报（自然科学版）》2021年第6期782-786,共5页Journal of Nanjing Tech University(Natural Science Edition)

基　　金：国家自然科学基金(51578283)。

摘　　要：通过对玻璃纤维增强复合材料(GFRP)钢复合桁架筋、GFRP钢复合竖筋和GFRP竖筋3种不同连接方式的混凝土夹芯墙板进行四点弯试验,对比分析不同连接方式对构件抗弯性能的影响。结果表明:当GFRP包裹桁架钢筋的层数由2变为6层时,极限承载力提高约9.1%;当GFRP包裹层数均为2层时,GFRP钢复合桁架筋与GFRP钢复合竖筋相比,极限承载力提高约37.5%,且采用桁架筋连接件的墙板整体性能更好,可减少因滑移现象产生的抗弯刚度折减;当连接件直径相同时,GFRP竖筋墙板与钢筋竖向连接件墙板相比,极限承载力提高约8.0%。Four-point bending test was conducted on concrete sandwich wall panels with three different kinds of connectors(glass fiber reinforced composites(GFRP)-steel composite truss ribs,GFRP-steel composite vertical ribs and GFRP vertical ribs).The effects of connection structure on the bending resistance of components were discussed.Results showed that as the layers of GFRP wrapped truss reinforcement increased from 2 to 6,the ultimate bearing capacity of panels increased by about 9.1%.For specimens with truss connectors wrapped with two layers of GFRP,the ultimate bearing capacity of panels with GFRP-steel composite truss ribs increased by about 37.5%,which was compared with GFRP-steel composite vertical ribs.The overall performance of wall panels with truss ribs was better,which reduced the bending stiffness reduction due to slip phenomenon.In the same case of connector diameters,the ultimate bearing capacity of panels with GFRP vertical ribs increased by about 8.0%compared with the counterparts with steel bar vertical connectors.

关 键 词：GFRP钢复合筋 连接件 混凝土 夹芯墙板 抗弯性能 桁架钢筋 

分 类 号：TU377.9[建筑科学—结构工程]