东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2007, Vol. 28 ›› Issue (5): 737-740.DOI: -

• 论著 • 上一篇    下一篇

FRP布钢与混凝土预应力组合梁受力分析

刘莉;王连广;赵军;吕臻;   

  1. 东北大学资源与土木工程学院;东北大学资源与土木工程学院;沈阳建筑大学土木工程学院;沈阳建筑大学土木工程学院 辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110168;辽宁沈阳110168
  • 收稿日期:2013-06-24 修回日期:2013-06-24 出版日期:2007-05-15 发布日期:2013-06-24
  • 通讯作者: Liu, L.
  • 作者简介:-
  • 基金资助:
    建设部科技攻关项目(2003-2-135);;

Stress analysis of prestressed steel-concrete composite beams reinforced with FRP strips

Liu, Li (1); Wang, Lian-Guang (1); Zhao, Jun (2); Lu, Zhen (2)   

  1. (1) School of Resources and Civil Engineering, Northeastern University, Shenyang 110004, China; (2) School of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, China
  • Received:2013-06-24 Revised:2013-06-24 Online:2007-05-15 Published:2013-06-24
  • Contact: Liu, L.
  • About author:-
  • Supported by:
    -

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摘要： 利用FRP(纤维增强复合材料)耐腐蚀、轻质、高强等优点,在钢与混凝土预应力简支组合梁下表面粘贴FRP布,形成能够有效减小变形和提高承载力的新型FRP布钢与混凝土预应力组合梁.以数值积分方法为基础,考虑材料非线性,提出该组合梁由加载至破坏的全过程非线性分析模式,研制计算程序,得到荷载与变形、荷载与预应力增量关系曲线,对其进行全过程非线性分析,明确组合梁不同受力阶段的工作特性,并通过算例验证该分析模式的正确性.

关键词: FRP, 组合梁, 非线性分析, 承载力, 变形, 预应力增量

Abstract: Taking advantage of FRP (fiber-reinforced polymer) that is anticorrosive, light and of high strength, the FRP strips were stuck on the flange bottom of H-beam of a simply-supported prestressed steel-concrete composite beam, thus enabling the composite beam to reduce effectively its deformation and improve its load-bearing capacity. Based on numerical integration and taking account of the beam' s nonlinear materials, the nonlinear analytic models are developed for the beam in the whole process from receiving load to failure. Then, the computation procedure is programmed to obtain the relationship between load and deformation and that between load and prestressed increment. The whole process is thus analyzed nonlinearly to clarify the working characteristics of the composite beam in different stress/strain variation phases. An example is given to verify the validity of the analytic models proposed.

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