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ng混凝土结构是传统加固技术的替代方案，如钢板粘结、截面扩大和外部后张拉。FRP加固系统使用FRP复合材料作为外部粘结或近表面安装的补充加固。与传统加固技术相比，FRP系统具有优势：它们重量轻，安装相对容易，且无腐蚀性。由于FRP材料的特性以及FRP加固构件的性能，需要对这些系统的使用进行具体指导。本指南提供了FRP加固系统的历史和使用的一般信息；FRP材料性能说明；以及用于加固混凝土结构的FRP系统的工程、施工和检查建议。本指南基于从用于加固混凝土结构的FRP系统的实验研究、分析工作和现场应用中获得的知识。关键词：芳纶纤维；桥梁；建筑；碳纤维；腐蚀开裂；发育长度；抗震；纤维增强聚合物；结构设计。Ame AR COLUMNS，第109页 混凝土结构进行加固或改造，以抵抗更高的设计荷载，纠正因劣化而造成的强度损失，纠正设计或施工缺陷，或提高延性，这在历史上是使用传统材料和施工技术完成的。
外部粘结钢板、钢或混凝土护套以及外部后张拉是许多可用的传统技术中的一些。由聚合物树脂中的纤维制成的复合材料，也称为纤维增强聚合物（FRPs），已成为修复和修复的可行选择。在本指南中，FRP系统定义为用于制造复合层压板的纤维和树脂、用于将其粘结到混凝土基底的所有适用树脂以及用于保护组成材料的所有涂层。仅出于美观原因使用的涂层不被视为FRP系统的一部分。FRP材料重量轻、无腐蚀性，并具有较高的抗拉强度。这些材料有多种形式，从工厂生产的拉挤层压材料到干燥的纤维片材，在添加聚合物树脂之前，可以将其包裹以符合结构的几何形状。固化的FRP系统的相对薄的轮廓通常在美学或接近性受到关注的应用中是理想的。FRP系统也可用于难以实施传统技术的出入受限区域。本文件的基础是从FRP加固系统的实验研究、分析工作和现场应用的全面回顾中获得的知识。本文件强调了需要进一步研究的领域，并汇编在附录C中
Ng concrete structure is an alternative to traditional reinforcement technology, such as steel plate bonding, section expansion and external post tensioning. The FRP strengthening system uses FRP composites as supplementary reinforcement for external bonding or near surface mounting. Compared with traditional reinforcement technologies, FRP systems have advantages: they are light in weight, relatively easy to install, and non corrosive. Due to the characteristics of FRP materials and the performance of FRP strengthened members, specific guidance on the use of these systems is required. This guide provides general information on the history and use of FRP strengthening systems; FRP material performance description; And engineering, construction and inspection recommendations for FRP systems used to strengthen concrete structures. This guide is based on knowledge gained from experimental studies, analytical work, and field applications of FRP systems for strengthening concrete structures. Key words: aramid fiber; Bridges; Architecture; Carbon fiber; Corrosion cracking; Development length; anti-seismic; Fiber reinforced polymer; Structural design. Ame AR COLUMNS, Page 109 Concrete structures are strengthened or modified to resist higher design loads, correct strength losses due to deterioration, correct design or construction defects, or improve ductility, which has historically been accomplished using traditional materials and construction techniques.
External bonded steel plates, steel or concrete sheaths, and external post tensioning are some of the many traditional techniques available. Composites made from fibers in polymer resins, also known as fiber reinforced polymers (FRPs), have become a viable option for repair and repair. For the purposes of this guideline, FRP systems are defined as fibers and resins used to manufacture composite laminates, all applicable resins used to bond them to concrete substrates, and all coatings used to protect constituent materials. Coatings used only for aesthetic reasons are not considered part of the FRP system. FRP material is light in weight, non corrosive and has high tensile strength. These materials come in many forms, from factory produced pultruded laminates to dry fiber sheets, which can be wrapped to conform to the geometry of the structure before adding polymer resins. The relatively thin profile of the cured FRP system is usually ideal for applications where aesthetics or accessibility are of concern. FRP systems can also be used in restricted access areas where traditional technologies are difficult to implement. The basis of this document is the knowledge gained from the experimental research, analysis and comprehensive review of the field application of the FRP strengthening system. This document highlights areas requiring further research and is compiled in Appendix C
