本文選題：FRP管 + FRP管混凝土　； 參考：《華中科技大學(xué)》2013年碩士論文

【摘要】：纖維增強復(fù)合材料（Fiber Reinforced Polymer，簡稱FRP）以質(zhì)輕高強、耐腐蝕、抗疲勞、可設(shè)計性好等優(yōu)點被倍受土木工程界和復(fù)合材料界的青睞。將混凝土灌注于預(yù)制的FRP管中而成的FRP管混凝土軸壓構(gòu)件，集混凝土良好的抗壓能力與FRP這種新型材料優(yōu)點于一身，有比鋼管混凝土更廣的適用范圍。 目前，大多數(shù)試驗研究是關(guān)于管厚、纖維纏繞角度、纖維類型對FRP管混凝土軸壓性能的影響，，只是定型的進行試驗分析沒有從根本上研究這些參數(shù)對FRP管的力學(xué)性能的作用進而影響FRP管混凝土的軸壓性能。 本文首先介紹FRP管使用的常見纖維和基體的力學(xué)特性以及纏繞制作工藝、拉擠-纏繞制作工藝；建立FRP單層板這個FRP管的基本單元的應(yīng)力-應(yīng)變關(guān)系與強度理論，單層板以不同鋪設(shè)角度、鋪設(shè)順序和鋪設(shè)厚度形成FRP管（實質(zhì)是FRP層合板），推導(dǎo)FRP層合板的本構(gòu)關(guān)系，計算出FRP管軸向和環(huán)向彈性模量和泊松比，分析FRP管的破壞機理，提出FRP管的強度計算方法。然后對FRP管混凝土軸壓受力分析與力學(xué)計算，結(jié)合計算所得FRP管的力學(xué)參數(shù)，提出一種FRP管混凝土軸壓應(yīng)力-應(yīng)變曲線與構(gòu)件破壞時各項極限參數(shù)的計算方法，結(jié)合FRP管的計算理論整合歸納出從纖維、基體的類型，F(xiàn)RP單層板的鋪設(shè)方式得出FRP管的剛度和強度，再對FRP管混凝土軸壓構(gòu)件的本構(gòu)關(guān)系和極限承載力的計算框架，也能指導(dǎo)FRP管混凝土軸壓構(gòu)件的設(shè)計。最后設(shè)計試驗測定FRP管的彈性常數(shù)和環(huán)向斷裂應(yīng)變、FRP管混凝土的軸壓應(yīng)力-應(yīng)變曲線及極限承載力。
[Abstract]:Fiber Reinforced Polymer (FRP) has been favored by civil engineering and composite materials for its advantages of light and high strength, corrosion resistance, fatigue resistance and good designability. The axial compression member of FRP tube made by pouring concrete into prefabricated FRP pipe combines the advantages of good compressive capacity of concrete and new material such as FRP, and has a wider range of application than concrete filled steel tube (CFST). At present, most of the experimental studies are about the influence of pipe thickness, filament winding angle and fiber type on the axial compression properties of FRP pipe concrete. However, the effect of these parameters on the mechanical properties of FRP pipes has not been studied and then the axial compression behavior of FRP concrete has been affected. In this paper, the mechanical properties of the common fiber and matrix used in FRP tube, the winding process, the pull-winding process, the stress-strain relation and strength theory of the basic unit of FRP single layer plate are introduced in this paper. The FRP pipe is formed by the single layer plate with different laying angles, laying sequence and laying thickness (essentially FRP laminated plate). The constitutive relation of FRP laminated plate is derived, the axial and circumferential elastic modulus and Poisson's ratio of FRP pipe are calculated, and the failure mechanism of FRP pipe is analyzed. A method for calculating the strength of FRP tube is presented. Then, the stress analysis and mechanical calculation of FRP pipe concrete under axial compression, combined with the calculated mechanical parameters of FRP pipe, a method for calculating the stress-strain curve of FRP pipe concrete under axial compression and the limit parameters of component failure is put forward. Combined with the calculation theory of FRP pipe, the stiffness and strength of FRP pipe are derived from the type of fiber and matrix laying, and the calculation frame of constitutive relation and ultimate bearing capacity of FRP tube concrete axial compression member is given. It can also guide the design of FRP tube concrete axial compression member. Finally, the elastic constants and the axial compressive stress-strain curves and ultimate bearing capacity of FRP tube concrete are measured by design test.
【學(xué)位授予單位】：華中科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TU398.9

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