（广西科技大学土木建筑工程学院， 柳州 545006）

［摘要］为研究CFRP预应力混凝土棱柱体（CFRP-PCPs）复合筋混凝土连续梁的塑性性能，制备了6根CFRP-PCPs复合筋混凝土连续梁，并对其完成了单跨单点加载试验。考察了试验梁在加载过程中不同阶段的受力特征。基于试验结果提出了承载力极限状态下中支座控制截面左右两侧等效塑性铰区长度计算公式。计算结果表明，所提出的计算公式的计算值与试验值吻合较好。

［关键词］CFRP-PCPs复合筋； 连续梁； 内力重分布； 等效塑性铰区长度

中图分类号：TU375-4文献标识码：A文章编号：1002-848X(2016)15-0037-05

Experimental study on plastic property of composite reinforced concrete continuous beams with CFRP-PCPs

Deng Yu， Mou Xiaohui， Zhang Peng， Liu Wenbing， Zhong Qingyu

（College of Civil Engineering and Architecture, Guangxi University of Science and Technology, Liuzhou 545006, China）

Abstract:In order to investigate the plastic property of composite reinforced concrete continuous beams with carbon fibre reinforced plastics prestressed concrete prisms (CFRP-PCPs), 6 composite reinforced concrete continuous beams with CFRP-PCPs were fabricated and  tested with one point load applied at each mid-span. During the test, the mechanical behaviors of the beams in the different stages of the loading process were investigated. Based on the test results, the calculation formula of length of equivalent plastic hinge zone at left and right sides of controlling section of the middle bearing under the limit state of bearing capacity was presented. The calculated results show good agreement between the calculated and experimental results.

Keywords:CFRP-PCPs composite bar; continuous beam; internal force redistribution; length of equivalent plastic hinge zone

*国家自然科学基金项目（51168006），广西高校科学技术研究重点项目（ZD2014076），广西自然科学基金项目（2015GXNSFAA139263），柳州市科学研究与技术开发计划项目（2014B020204)，广西工学院自然科学基金项目（院科自1074018）。

作者简介：邓宇，博士，副教授，Email：dy261@163.com。