本文選題：聚酯纖維增強復合塑料 + 受壓性能�。� 參考：《湖南大學》2015年碩士論文

【摘要】：纖維增強復合塑料因其具有比強度高,質量輕,耐腐蝕和施工方便等優(yōu)點而被廣泛運用于土木工程領域。隨著經濟的發(fā)展和材料科學的進步,綠色環(huán)保材料、可持續(xù)化材料,高性能化材料等越來越受到科研人員的重視。傳統(tǒng)的人造纖維成本高、產量低無法凸顯其在這一方面的優(yōu)勢,成本低廉、取材便捷、綠色可持續(xù)、增強效果良好的纖維材料成為越來越多的研究者研究和探索的重點。聚酯纖維是合成纖維中發(fā)展速度最快、產量最高、應用最廣的纖維,其良好的材料性能和巨大的產業(yè)優(yōu)勢為其在纖維增強復合塑料的發(fā)展提供了支撐和可能,越來越多的研究者開始重視對聚酯纖維的研究和應用。本文主要對聚酯纖維增強復合塑料(PFRP,Polyester Fiber Reinforced Polymer/Plastic)約束混凝土的受壓性能進行了研究,主要開展了以下研究工作：(1) PFRP拉伸性能試驗研究。通過對不涂膠的聚酯纖維布和涂膠的不同層數的聚酯纖維布進行材性試驗,本文得出了PFRP的基本力學性能,如斷裂強度、斷裂伸長率、應力-應變曲線等。(2) PFRP約束混凝土的受壓性能研究。本文以不同外包層數PFRP和不同強度混凝土為變量,對36根底面直徑為150mm、高度為300mm混凝土短柱進行了軸心受壓試驗。試驗結果表明：與素混凝土相比,PFRP約束混凝土能夠提高強度和延性。(3)PFRP約束混凝土的強度和極限應變模型分析。首先介紹部分存在的經典強度和極限應變模型,然后將試驗值與模型計算值進行對比分析,最后提出本文建議的PFRP約束混凝土的受壓性能的強度模型和極限應變模型。(4) PFRP約束混凝土的應力-應變模型分析。首先介紹部分存在的經典的應力-應變模型,然后將試驗值和模型計算值進行對比分析,最后提出本文建議的PFRP約束混凝土的受壓性能的應力-應變模型。本文研究結果表明：PFRP約束混凝土可以提高混凝土的強度、韌性和后期延性,有利于增強混凝土的抗壓能力,防止混凝土發(fā)生崩塌,延緩破壞的突然性。
[Abstract]:Fiber reinforced composite plastics are widely used in civil engineering due to their high specific strength, light weight, corrosion resistance and easy construction. With the development of economy and the progress of material science, more and more attention has been paid to green environmental protection materials, sustainable materials and high performance materials. Traditional man-made fiber with high cost and low yield can not highlight its advantages in this area. Low cost, convenient material selection, green sustainable, and good enhancement effect fiber materials have become the focus of more and more researchers' research and exploration. Polyester fiber is the fastest growing fiber with the highest yield and the most widely used fiber. Its good material properties and huge industrial advantages provide the support and possibility for the development of fiber reinforced composite plastics. More and more researchers begin to pay attention to the research and application of polyester fiber. In this paper, the compressive properties of polyester fiber reinforced Fiber Fiber Reinforced plastic confined concrete are studied, and the following research work: 1) PFRP tensile properties are studied. In this paper, the basic mechanical properties of PFRP, such as breaking strength, elongation at break, have been obtained through the experiment on the properties of polyester fiber cloth without glue and polyester fiber cloth with different layers of glue. A study on compressive behavior of PFRP confined concrete with stress-strain curves. In this paper, the axial compression tests of 36 300mm concrete short columns with 150 mm bottom diameter and a height of 300mm have been carried out with PFRP and different strength concrete as variables. The experimental results show that the strength and ductility of PFRP confined concrete can be improved compared with plain concrete. First, the classical strength and limit strain models are introduced, and then the experimental results are compared with the calculated values. Finally, the strength model and ultimate strain model of PFRP confined concrete are proposed in this paper. The stress-strain model of PFRP confined concrete is analyzed. First, the classical stress-strain model is introduced, then the experimental values and the calculated values are compared and analyzed. Finally, the stress-strain model of the compressive behavior of PFRP confined concrete is proposed in this paper. The results show that the concrete confined by PFRP can improve the strength, toughness and later ductility of concrete, enhance the compressive capacity of concrete, prevent concrete from collapsing and delay the sudden failure of concrete.
【學位授予單位】：湖南大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TU528;TU599

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