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中文摘要：
针对装配式简支钢-混组合小箱梁桥横向分布系数的影响参数及计算方法进行了研究。以某桥梁为例,采用不同计算方法计算其在最不利汽车荷载下的横向受力分布,并以MIDAS板单元模型模拟结果为基准,对其他计算方法所得结果进行校核,对偏心压力法以及修正偏心压力法进行了适用性评价,并且提出了对梁格法参数取值的若干建议。除此之外,基于MIDAS有限元模型研究了预制桥面板厚度、横向连系梁间距等参数对组合箱梁桥横向受力的影响,结果表明,当横向连系梁间距在（1/2-1/15）L范围内变化,预制桥面板厚度在150-300 mm范围内变化时,对组合箱梁桥横向受力分布影响不大。
英文摘要：
Based on a real steel-concrete composite girder bridge,this paper mainly analyzes the effecting factor and the calculating method of the transverse distribution coefficient under the vehicle load of the simply supported fabricated steel-concrete composite girder bridge.The transverse distribution coefficient of the bridge is calculated by the rigid cross beam method,the revised rigid cross beam method and the grillage method.A plate-element model of the target bridge is built by MIDAS Civil to calculate the coefficient,and the result are thought of as accurate so as to evaluate the applicability of other methods and give advice on the spacing of virtual beams.Meanwhile,effects of the thickness of bridge deck and the spacing of diaphragm beams on the transverse distribution are analyzed based on the plate-element model.The results show that the thickness of bridge deck,the spacing of diaphragm beams and the hinge joint of the decks have little effects on the transverse distribution coefficient.
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Study on Dynamic Characteristics of Long Span Continuous Bridge from Construction to Completion Cons
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