基于CFRP筋无粘结预应力混凝土梁的数值分析方法  

Numerical analysis method of unbonded prestressed concrete beams with CFRP tendons

作　　者：张鹏[1] 张友顺[1] 邓宇[1] 钟卿瑜 张祥宁 曹瑞丹 

机构地区：[1]广西科技大学土木建筑工程学院,广西柳州545006

出　　处：《广西科技大学学报》2015年第4期70-74,共5页Journal of Guangxi University of Science and Technology

基　　金：国家自然科学基金项目(51168006);柳州市科学研究与技术开发计划项目(2014B020204);广西自然科学基金青年项目(2012GXNSFBA053159);广西工学院自然科学基金项目(院科自1074018)资助

摘　　要：以无粘结预应力CFRP筋加固钢筋混凝土梁为基础,运用混凝土条带理论以及平截面假定对梁截面弯矩与曲率的关系进行推导,绘制弯矩曲率曲线图,并对截面各个部位的应变值进行推算,以此来对梁的破坏提出预警.经过试验值与理论值的对比,表明推导方法的适用性比较好.Based on the unbonded prestressed CFRP tendon strengthening reinforced concrete beam, the relationship between the moment and curvature of beam section is deduced with concrete strips theory and plane section assumption of beam and the curves of bending moment curvature are drawn. The strain values of each part of the cross section are calculated, and the failure of the beam is put forward. The comparison between experimental and theoretical results shows that the method is better.

关 键 词：CFRP筋 无粘结 应变 分析方法 试验 

分 类 号：TU532[建筑科学—建筑技术科学]