【摘要】：波形鋼腹板混凝土橋因經(jīng)濟、自重輕、施工周期短、美觀等優(yōu)勢在許多發(fā)達國家研究和應(yīng)用相對較成熟，近年來在我國不斷應(yīng)用并呈現(xiàn)出強勁發(fā)展勢頭。作為一種新型的橋梁結(jié)構(gòu)形式，結(jié)合了波形鋼腹板和混凝土的特點，其結(jié)構(gòu)形式逐步向變截面大跨徑擴展。 鋼腹板在波形鋼腹板箱梁橋中承受剪力，其抗剪承載力由截面的屈曲強度控制。本文在總結(jié)已建橋梁的基礎(chǔ)上，建立波形鋼腹板箱梁橋ansys有限元模型。并在不同因素下分析其對鋼腹板承載力的影響。這些因素包括波形鋼腹板厚度、直板段長度、梁高、波高、斜板傾角。結(jié)果顯示：①提高波形鋼腹板厚度可以顯著提高其抗剪承載力。②改變直板段長度對波形鋼腹板的抗剪承載力影響較小，，但是直板段長度過大容易造成其局部屈曲破壞，長度應(yīng)小于440mm。③加大斜板傾角可以明顯提高鋼腹板的抗剪承載力。 本文還對波形鋼腹板的抗剪連接鍵進行了歸納，總結(jié)不同類型的連接件的破壞機理及抗剪承載力以及國內(nèi)外的經(jīng)驗公式。 希望通過本文的研究，能為橋梁設(shè)計提供技術(shù)上的參考。
[Abstract]:The corrugated steel web concrete bridge is relatively mature in many developed countries because of its advantages such as economy, light weight, short construction period and beautiful appearance. In recent years, it has been continuously applied in China and has shown a strong development momentum. As a new type of bridge structure, with the characteristics of corrugated steel web and concrete, the structural form is gradually extended to the long span with variable cross section. Steel web is subjected to shear force in corrugated steel web box girder bridge, and its shear capacity is controlled by the buckling strength of section. In this paper, the ansys finite element model of corrugated steel web box girder bridge is established on the basis of the existing bridge. The influence of different factors on the bearing capacity of steel web was analyzed. These factors include the thickness of corrugated steel web, length of straight plate, beam height, wave height and inclined angle of inclined plate. The results show that: 1 increasing the thickness of corrugated steel web can significantly improve the shear capacity of corrugated steel web. (2) changing the length of straight plate has little effect on the shear capacity of corrugated steel web, but the length of straight plate is easy to cause local buckling failure. The shear capacity of steel web can be improved obviously when the length should be smaller than 440mm.3 and the inclined angle of inclined plate is increased. In this paper, the shear bond of corrugated steel web is summarized, and the failure mechanism, shear bearing capacity and experience formula of different types of joints are summarized. Through the research of this paper, we hope to provide a technical reference for bridge design.
【學(xué)位授予單位】：華東交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U448.213

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