MVME2432-3工控自動化卡件
ng混凝土結(jié)構(gòu)是傳統(tǒng)加固技術(shù)的替代方案，如鋼板粘結(jié)、截面擴(kuò)大和外部后張拉。FRP加固系統(tǒng)使用FRP復(fù)合材料作為外部粘結(jié)或近表面安裝的補(bǔ)充加固。與傳統(tǒng)加固技術(shù)相比，F(xiàn)RP系統(tǒng)具有優(yōu)勢：它們重量輕，安裝相對容易，且無腐蝕性。由于FRP材料的特性以及FRP加固構(gòu)件的性能，需要對這些系統(tǒng)的使用進(jìn)行具體指導(dǎo)。本指南提供了FRP加固系統(tǒng)的歷史和使用的一般信息；FRP材料性能說明；以及用于加固混凝土結(jié)構(gòu)的FRP系統(tǒng)的工程、施工和檢查建議。本指南基于從用于加固混凝土結(jié)構(gòu)的FRP系統(tǒng)的實(shí)驗(yàn)研究、分析工作和現(xiàn)場應(yīng)用中獲得的知識。關(guān)鍵詞：芳綸纖維；橋梁；建筑；碳纖維；腐蝕開裂；發(fā)育長度；抗震；纖維增強(qiáng)聚合物；結(jié)構(gòu)設(shè)計(jì)。Ame AR COLUMNS，第109頁 混凝土結(jié)構(gòu)進(jìn)行加固或改造，以抵抗更高的設(shè)計(jì)荷載，糾正因劣化而造成的強(qiáng)度損失，糾正設(shè)計(jì)或施工缺陷，或提高延性，這在歷史上是使用傳統(tǒng)材料和施工技術(shù)完成的。
外部粘結(jié)鋼板、鋼或混凝土護(hù)套以及外部后張拉是許多可用的傳統(tǒng)技術(shù)中的一些。由聚合物樹脂中的纖維制成的復(fù)合材料，也稱為纖維增強(qiáng)聚合物（FRPs），已成為修復(fù)和修復(fù)的可行選擇。在本指南中，F(xiàn)RP系統(tǒng)定義為用于制造復(fù)合層壓板的纖維和樹脂、用于將其粘結(jié)到混凝土基底的所有適用樹脂以及用于保護(hù)組成材料的所有涂層。僅出于美觀原因使用的涂層不被視為FRP系統(tǒng)的一部分。FRP材料重量輕、無腐蝕性，并具有較高的抗拉強(qiáng)度。這些材料有多種形式，從工廠生產(chǎn)的拉擠層壓材料到干燥的纖維片材，在添加聚合物樹脂之前，可以將其包裹以符合結(jié)構(gòu)的幾何形狀。固化的FRP系統(tǒng)的相對薄的輪廓通常在美學(xué)或接近性受到關(guān)注的應(yīng)用中是理想的。FRP系統(tǒng)也可用于難以實(shí)施傳統(tǒng)技術(shù)的出入受限區(qū)域。本文件的基礎(chǔ)是從FRP加固系統(tǒng)的實(shí)驗(yàn)研究、分析工作和現(xiàn)場應(yīng)用的全面回顧中獲得的知識。本文件強(qiáng)調(diào)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
