GFRP腰梁在基坑支护中的应用与研究  

Application and research of the GFRP waist beam in foundation pit support

作　　者：张顺凯[1] 章伟[1] 张明义[1] 袁海洋[1] 孟令波[1] 

机构地区：[1]青岛理工大学土木工程学院,青岛266033

出　　处：《青岛理工大学学报》2013年第3期6-10,共5页Journal of Qingdao University of Technology

基　　金："十一五"国家科技支撑计划项目资助(2008BAJ06B03-2)

摘　　要：在基坑支护中采用可循环利用的玻纤复合材料(GFRP)构建腰梁,可以节约钢材、保护环境.结合青岛某基坑支护工程,采用两种不同材料腰梁进行对比试验的方法,对锚索预应力损失情况进行监测,初步得出GFRP腰梁对锚索预应力损失的影响.监测及分析结果表明,GFRP腰梁对施工过程中的预应力损失有一定的补偿作用,可以取代传统材料腰梁.Using glass fiber-reinforced plastic（GFRP） waist beam in foundation pit support can save steel and protect environment.Based on the comparative test result that was carried out in a certain project in Qingdao,the changes of prestressed anchor cables in two different kinds of middle beams are studied,and the effect of GFRP middle beam on the prestress lose of anchor cable is analyzed.It is found that the GFRP waist beam has the compensation effect on prestress loss of anchors in stretching and locking,and is suitable for practical engineering.

关 键 词：基坑支护 GFRP 预应力损失 锚索 腰梁 

分 类 号：TU473.1[建筑科学—结构工程]