MVME2432-3工控自動(dòng)化卡件
ng混凝土結構是傳統加固技術(shù)的替代方案，如鋼板粘結、截面擴大和外部后張拉。FRP加固系統使用FRP復合材料作為外部粘結或近表面安裝的補充加固。與傳統加固技術(shù)相比，FRP系統具有優(yōu)勢：它們重量輕，安裝相對容易，且無(wú)腐蝕性。由于FRP材料的特性以及FRP加固構件的性能，需要對這些系統的使用進(jìn)行具體指導。本指南提供了FRP加固系統的歷史和使用的一般信息；FRP材料性能說(shuō)明；以及用于加固混凝土結構的FRP系統的工程、施工和檢查建議。本指南基于從用于加固混凝土結構的FRP系統的實(shí)驗研究、分析工作和現場(chǎng)應用中獲得的知識。關(guān)鍵詞：芳綸纖維；橋梁；建筑；碳纖維；腐蝕開(kāi)裂；發(fā)育長(cháng)度；抗震；纖維增強聚合物；結構設計。Ame AR COLUMNS，第109頁(yè) 混凝土結構進(jìn)行加固或改造，以抵抗更高的設計荷載，糾正因劣化而造成的強度損失，糾正設計或施工缺陷，或提高延性，這在歷史上是使用傳統材料和施工技術(shù)完成的。
外部粘結鋼板、鋼或混凝土護套以及外部后張拉是許多可用的傳統技術(shù)中的一些。由聚合物樹(shù)脂中的纖維制成的復合材料，也稱(chēng)為纖維增強聚合物（FRPs），已成為修復和修復的可行選擇。在本指南中，FRP系統定義為用于制造復合層壓板的纖維和樹(shù)脂、用于將其粘結到混凝土基底的所有適用樹(shù)脂以及用于保護組成材料的所有涂層。僅出于美觀(guān)原因使用的涂層不被視為FRP系統的一部分。FRP材料重量輕、無(wú)腐蝕性，并具有較高的抗拉強度。這些材料有多種形式，從工廠(chǎng)生產(chǎn)的拉擠層壓材料到干燥的纖維片材，在添加聚合物樹(shù)脂之前，可以將其包裹以符合結構的幾何形狀。固化的FRP系統的相對薄的輪廓通常在美學(xué)或接近性受到關(guān)注的應用中是理想的。FRP系統也可用于難以實(shí)施傳統技術(shù)的出入受限區域。本文件的基礎是從FRP加固系統的實(shí)驗研究、分析工作和現場(chǎng)應用的全面回顧中獲得的知識。本文件強調了需要進(jìn)一步研究的領(lǐng)域，并匯編在附錄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
