Experimental Study on Concrete Columns Confined by BFRP-PVC Tubes Under Uniaxial Loading  

作　　者：姜绍飞 DAI Tianjie FU Dabao WU Zhaoqi LINing 

机构地区：[1]College of Civil Engineering ,Fuzhou University ,Fuzhou, China, 350108 [2]Shenyang Real Estate Development and Con-struction Office, Shenyang, China, 110013

出　　处：《沈阳建筑大学学报（自然科学版）》2012年第1期23-29,共7页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家自然科学基金项目(50878057);福建省杰出青年科学基金(2009J06027);住房和城乡建设部科学技术项目(2009-K2-40)

摘　　要：This paper presents an experimental study on the behavior of circular concrete columns reinforced by BFRP-PVC tubes under uniaxial loading.A total of six specimens were prepared and tested under uniaxial loading.The main parameters varied in the tests were strengthening ratio and strengthening approach of BFRP.The performance,such as failure modes,ultimate bearing capacity and stress-strain curves,was investigated in details and a formula was proposed to predict the compressive ultimate strength.The results show that this kind of confined columns obviously improves the ultimate bearing capacity,and the ultimate bearing capacity increases with the strengthening layers.The formula proposed is applicable and efficient for prediction of the ultimate bearing capacity as well.This paper presents an experimental study on the behavior of circular concrete columns reinforced by BFRP-PVC tubes under uniaxial loading.A total of six specimens were prepared and tested under uniaxial loading.The main parameters varied in the tests were strengthening ratio and strengthening approach of BFRP.The performance,such as failure modes,ultimate bearing capacity and stress-strain curves,was investigated in details and a formula was proposed to predict the compressive ultimate strength.The results show that this kind of confined columns obviously improves the ultimate bearing capacity,and the ultimate bearing capacity increases with the strengthening layers.The formula proposed is applicable and efficient for prediction of the ultimate bearing capacity as well.

关 键 词：BFRP-PVC tubes uniaxial loading.TIF Strengthening ratio.TIF Strengthening approach ultimate bearing capacity 

分 类 号：TU398[建筑科学—结构工程] TU317