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首页> 外文会议>SP-230; International Symposium on Fiber-Reinforced Polymer(FRP) Reinforcement for Concrete Structures; 20051106-09; Kansas City,MI(US) >Closed Form Design Equations for Strengthened Concrete Beams: FRP Rupture
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Closed Form Design Equations for Strengthened Concrete Beams: FRP Rupture

机译：钢筋混凝土梁的封闭形式设计方程：FRP破裂

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摘要

Externally bonded FRP has been established as the technology of choice to strengthen RC beams. Researchers and practicing engineers have recently developed design guidelines for FRP strengthening. However, the current state of the art flexural design procedure suggests an iterative process. No earlier efforts have been devoted to develop direct strength design equations on the failure mode of FRP rupture that can facilitate structural calculations. This study develops exact and approximate sets of closed form equations to design singly and doubly reinforced strengthened rectangular sections that fail by FRP rupture. Comparisons with reported experimental strength data indicate excellent agreement. A comprehensive parametric study has yielded a simple linear regression equation that has an almost perfect statistical correlation and is equally applicable in cases of analysis and design. Comparison between the exact solution and the regression equation confirms the accuracy of the latter. The latter is used in a design example.
机译：外部粘结的FRP已被确定为加强RC梁的首选技术。研究人员和实践工程师最近制定了用于FRP加固的设计指南。但是，当前的挠曲设计程序的最新状态表明了一个迭代过程。以前没有专门的工作致力于开发关于FRP破裂的破坏模式的直接强度设计方程，该方程可以简化结构计算。这项研究开发了精确的和近似的闭合形式方程组，以设计由于FRP断裂而失效的单层和双层加固矩形截面。与报道的实验强度数据的比较表明了极好的一致性。全面的参数研究得出了一个简单的线性回归方程，该方程具有近乎完美的统计相关性，并且同样适用于分析和设计。精确解与回归方程之间的比较证实了后者的准确性。后者用于设计示例。

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