【摘要】：波紋鋼腹板組合箱梁是一種特殊的鋼-混組合結(jié)構(gòu)，它與傳統(tǒng)的混凝土腹板箱梁相比，有很大的優(yōu)點(diǎn)，然而目前對(duì)于波紋鋼腹板組合箱梁的理論研究，我國(guó)還處于初步階段。本文主要結(jié)合奉化江大橋（三跨波紋鋼腹板預(yù)應(yīng)力混凝土連續(xù)箱梁橋），對(duì)波紋鋼腹板預(yù)應(yīng)力混凝土組合箱梁橋的抗彎、抗剪以及剪力連接件的性能進(jìn)行研究。 采用結(jié)構(gòu)力學(xué)方法，推導(dǎo)了波紋鋼腹板軸向有效彈性模量的表達(dá)式，并介紹了常用的幾種波紋鋼腹板的波紋形狀系數(shù)。給出了波紋鋼腹板縱向剛度、軸向剛度以及彎曲正應(yīng)力的計(jì)算公式；通過(guò)幾種模型對(duì)比分析，得到了箱室數(shù)量變化對(duì)于波紋鋼腹板組合箱梁的剪力滯的影響規(guī)律；給出了體外預(yù)應(yīng)力束應(yīng)力增量以及極限應(yīng)力的求解公式，并參考混凝土腹板箱梁彎曲理論推導(dǎo)了波紋鋼腹板抗彎承載力計(jì)算公式；采用Midas Civil2012對(duì)奉化江大橋進(jìn)行了有限元分析，并對(duì)抗彎承載力進(jìn)行了驗(yàn)算。 介紹了波紋鋼腹板剪應(yīng)力分布規(guī)律以及剪應(yīng)力的計(jì)算方法，同時(shí)參考不同學(xué)者的研究成果，給出了波紋鋼腹板剪切屈曲強(qiáng)度的計(jì)算公式；同時(shí)，采用ANSYS有限元分析軟件，對(duì)波紋鋼腹板非線性屈曲進(jìn)行了參數(shù)分析，得到了波紋鋼腹板板厚、波高、平板寬以及斜板傾角對(duì)波紋鋼腹板剪切屈曲的影響規(guī)律；并對(duì)奉化江大橋波紋鋼腹板進(jìn)行了剪應(yīng)力以及剪切屈曲驗(yàn)算。 結(jié)合日本規(guī)范，給出了波紋鋼腹板與頂、底板混凝土結(jié)合部的縱向抗水平剪力以及橫向抗角隅彎矩的設(shè)計(jì)方法，，并對(duì)奉化江大橋的頂、底板混凝土與波紋鋼腹板之間的抗剪連接件進(jìn)行了縱向以及橫向設(shè)計(jì)驗(yàn)算。
[Abstract]:Corrugated steel web composite box girder is a special steel-concrete composite structure, which has great advantages compared with the traditional concrete web box girder. However, at present, the theoretical research of corrugated steel web composite box girder is still in the preliminary stage in our country. In this paper, combined with Fenghua River Bridge (three-span corrugated steel web prestressed concrete continuous box girder bridge), the bending, shear resistance and shear connector performance of corrugated steel webs prestressed concrete composite box girder bridge are studied. By using the method of structural mechanics, the expression of axial effective elastic modulus of bellows is derived, and the wavy shape coefficients of several kinds of bellows are introduced. The formulas for calculating the longitudinal stiffness, axial stiffness and bending normal stress of corrugated steel web are given, and the influence of the number of box rooms on the shear lag of corrugated steel web composite box girder is obtained through the comparative analysis of several models. The formulas for solving the stress increment and ultimate stress of external prestress beams are given, and the formulas for calculating the bending capacity of corrugated steel webs are derived with reference to the bending theory of concrete webs. The finite element analysis of Fenghua River Bridge is carried out by Midas Civil2012, and the bending capacity of Fenghua River Bridge is checked and calculated. The distribution of shear stress and the calculation method of shear stress are introduced. at the same time, referring to the research results of different scholars, the formula for calculating the shear buckling strength of corrugated steel web is given. At the same time, the nonlinear buckling of corrugated steel web is analyzed by using ANSYS finite element analysis software, and the effects of web thickness, wave height, plate width and inclined angle on shear buckling of corrugated steel web are obtained. The shear stress and shear flexion of the corrugated steel web of Fenghua River Bridge are checked and calculated. Combined with the Japanese code, the design method of longitudinal horizontal shear force and transverse corner bending moment of the concrete joint of corrugated steel web and roof and bottom plate is given, and the top of Fenghua River Bridge is also given. The longitudinal and transverse design of shear connectors between floor concrete and corrugated steel webs is carried out.
【學(xué)位授予單位】：長(zhǎng)安大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U441;U448.35;U448.213

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