本文選題：波形頂板—UHPC組合橋面板 + 組合銷剪力連接件　； 參考：《西南交通大學》2017年碩士論文

【摘要】：波形頂板—UHPC組合橋而板通過減少焊縫和幾何構型的不連續(xù)有效提高了正交異性鋼橋面板的抗疲勞性能,是具有廣闊應用前景的新型結構。結合組合銷剪力連接件在組合梁中施工便捷、力學性能良好的優(yōu)異性能,將其引入到波形頂板—UHPC組合橋面板中作為UHPC結構層與鋼橋面板間的傳力構件。探究適用于波形頂板—UHPC組合橋面板中組合銷剪力連接件的合理構造形式,并深入研究組合銷剪力連接件的極限承載力和破壞模式,以及在組合橋面板中的力學行為。主要研究工作如下:(1)調查和分析組合銷剪力連接件的應用和研究現(xiàn)狀,分析其施工和力學方面的優(yōu)異性能及其用于波形頂板—UHPC組合橋面板中面臨的主要問題,為下一階段研究奠定基礎;(2)波形頂板—UHPC組合橋面板中剪力連接件的合理設計研究。組合銷剪力連接件是解決因結構層厚度變化而導致波形頂板組合橋面板鋼板與結構層界面剪力件設計困難的較好方案。研究波形頂板—UHPC組合橋面板中組合銷剪力連接件的合理的構造形式和幾何尺寸,總結分析組合銷剪力連接件不同破壞模式下的設計承載能力,對波形頂板—UHPC組合橋面板中組合銷剪力連接件的設計提供參考依據;(3)通過設計推出試驗模型,借助Abaqus有限元軟件進行仿真分析組合銷剪力連接件的極限承載力及失效機理,并分析影響承載能力的因素:高度、間距、鋼銷厚度、混凝土等級等,對其變化規(guī)律進行深入研究;(4)波形頂板—UHPC組合橋面板中組合銷剪力連接件的靜力性能和抗疲勞性能研究。通過極限承載力下波形頂板—UHPC組合橋面板中組合銷的荷載滑移性能研究組合銷剪力連接件的靜力工作性能;基于名義應力法對組合銷疲勞性能進行了研究。
[Abstract]:The fatigue resistance of orthotropic steel bridge panel is improved effectively by reducing the discontinuity of weld seam and geometric configuration. It is a new structure with broad application prospect. Combined with the advantages of convenient construction and good mechanical properties of the composite beam, the combined pin shear connection is introduced into the composite bridge deck as a force transfer member between the UHPC structure layer and the steel bridge slab. This paper probes into the reasonable construction form of the combined pin shear connection in the waveform roof UHPC composite bridge deck, and deeply studies the ultimate bearing capacity and failure mode of the composite pin shear connection, as well as the mechanical behavior in the composite bridge deck. The main research work is as follows: (1) investigation and analysis of the application and research status of composite pin shear connection, analysis of its excellent performance in construction and mechanics and the main problems faced in its application in waveform roof-UHPC composite bridge deck, The reasonable design of shear joint in the next stage of the research is studied, which is based on the waveform roof and UHPC composite bridge deck. The composite pin shear joint is a better scheme to solve the difficulty of designing the interface shear parts between the composite bridge deck plate and the structure layer caused by the change of the thickness of the structure layer. This paper studies the reasonable construction form and geometric size of the combined pin shear connection in the waveform roof UHPC composite bridge deck, and summarizes and analyzes the design bearing capacity of the composite pin shear connection under different failure modes. This paper provides a reference for the design of combined pin shear joint in the waveform roof UHPC composite bridge deck. Through the design of the test model, the ultimate bearing capacity and failure mechanism of the composite pin shear joint are simulated by Abaqus finite element software. The factors influencing bearing capacity are analyzed, such as height, spacing, thickness of steel pin, grade of concrete, etc. The static performance and fatigue resistance of the composite pin shear joint in the composite bridge deck with waveform roof and UHPC are studied. In this paper, the static behavior of the composite pin in the composite bridge deck is studied by means of the load-slip behavior of the composite pin in the ultimate bearing capacity, and the fatigue performance of the composite pin is studied based on the nominal stress method.
【學位授予單位】：西南交通大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：U443.31

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