【正文】 應(yīng)用不同的方法 來使是 之間的原位（ hand layup）和機(jī)器傷口中的應(yīng)用。同樣，Saadatmanesh et al.（ 1998年）采用碳玻璃鋼包，以測試鋼筋混凝土性能的提高帽帽梁及梁柱接頭。該包裝應(yīng)然后讓其在常溫下固化。環(huán)氧樹脂或樹脂然后用玻璃鋼靈活的附加織物表面的 設(shè)施 被改造。玻璃鋼外套可用于矩形或其他形狀的成員，如果形狀進(jìn)行修改，以防止壓力 來自發(fā)展中國家的發(fā)展。彎曲韌性剪切缺陷列 。第一部分該研究側(cè)重于理論思考和試驗(yàn)設(shè)計。該鋼套相當(dāng)于連續(xù)箍加固可用于圓柱或矩形柱稍作修改 。維修時應(yīng)用列夾克 ， 仍在載入沒有履行好，只達(dá)到百分之五十的軸向負(fù) 載 由單片標(biāo)本。相比之下，單片系列參考樣本的夾套列的行為單調(diào)軸向載荷。混凝土外套可用于改造以及梁列（ Cheong and MacAlevey2020年）。 現(xiàn)有構(gòu)件之間的面積和鋼管通常是充滿了泥漿（ Priestley et ）。這樣加強(qiáng)了傳統(tǒng)上所提供的鋼筋箍或螺旋，或電焊面料。這反過來說，這樣會使一個建設(shè)項(xiàng)目的安全系數(shù)增加。這允許在一個很大的靈活性和效率設(shè)計過程中，增強(qiáng)混凝土類型的選擇并不限于現(xiàn)有庫存材料。此外，藥盒加強(qiáng)是分布在一個平面配置提供更大的約束比鋼筋加固。 PCS優(yōu)點(diǎn) ： 構(gòu)件加固有一些獨(dú)特的性質(zhì)。 改造 可以適用于任何結(jié)構(gòu)構(gòu)件，包括梁，柱。這可能 會使老化的混凝土柱 不再顯示原設(shè)計強(qiáng)度。這些事件可以 明顯 影響結(jié)構(gòu)構(gòu)件的強(qiáng)度。拉力 會 導(dǎo)致混凝土 產(chǎn)生 裂縫，并 導(dǎo)致 最終失敗 。 改造現(xiàn)有結(jié)構(gòu) : 歷史上有很多結(jié)構(gòu) 是由鋼筋混凝土建成。 九標(biāo)本有基列的整個橫截面和改造面積加載， 這模擬了改造 載荷時的條件是在整個分布式截面。 對 三個標(biāo)本進(jìn)行改造與螺旋鋼筋鋼筋混凝土外套 （ 用鋼筋焊接線織物鋼筋混凝土外套 ）。 項(xiàng)目主 要內(nèi)容 ： 十七圓柱 的 構(gòu)建 和測試 以失敗 而告終 。此外， 并對 整個測試進(jìn)行了觀察和記錄。此外，新技術(shù) PCS加固， 有 可能 成為 加固 混凝土柱的改造方法。此外，由于混凝土開裂，鋼筋銹蝕，或其他損害 ，使 許多公共設(shè)施 不再提供原設(shè)計 要求的 承載能力 。 EXPERIMENTAL RESEARCH OF REINFORCED CONCRETE COLUMN RETROFIT METHODS Introduction As the infrastructure of our country continues to age, the need for effective retrofittreatments has increased. Many building and bridge structural ponents no longerprovide capacity sufficient to meet the required code standards. Seismic upgrading andreinforcement protection are two of the major issues requiring retrofits. Additionally,many aging structural members no longer provide the load capacity of the original designbecause of concrete cracking, steel corrosion, or other damage. In this research, severalretrofit methods for increasing the axial load capacity of reinforced concrete columnswere tested and analyzed. Several currently applied methods for retrofitting columns include concrete jacketing,steel jacketing, and fiber reinforced polymer (FRP) jacketing. All three methods havebeen shown to effectively in increase the axial load capacity of columns. In addition, anew reinforcement product, Prefabricated Cage System (PCS) reinforcement, wasintroduced as a possible reinforcement option for concrete jacket retrofit applications. Project Scope Three retrofit reinforcement options, concrete jacketing, steel jacketing, and FRP wrapping, were experimentally analyzed in the research. Three different materials provided reinforcement for the concrete jackets: a rebar cage with spiral transverse reinforcement, welded wire fabric (WWF), and the aforementioned PCS. All specimenswere tested under axial pression loading only. Applied load and displacement weremeasured for all specimens throughout testing until failure. Additionally, response of theloaded specimens was observed and documented throughout the testing. Behavior of thenewly introduced PCS reinforcement was pared with traditionally used retrofitapplications already currently utilized in the structural engineering industry. Advantagesand disadvantages of each retrofit measure were identified. Additionally, model conceptswere presented for the response of concrete jacket retrofitted columns based on the workof Mander et al. (1988) and Cai (1987). Project Summary Seventeen circular columns were constructed and tested to failure in pression. First,similar reinforced concrete base columns were constructed with spiral transverse reinforcement. All base specimens had the same dimensions, transverse, and longitudinaleinforcement. The base specimens were then retrofitted with the different retrofitmethods previously discussed. One specimen, referred to as the base specimen, wastested without any retrofit applied. Three specimens were retrofitted with a spiral rebarreinforced concrete jacket. Two specimens were reinforced with a welded wire fabr