本文選題：斜曲梁橋　切入點：板式橡膠支座　出處：《長安大學》2015年碩士論文

【摘要】：近年來高速公路建設和城市道路交通得到了快速發(fā)展,由于受到地形、地況的影響,斜梁橋和曲線梁橋這種橋型也被廣泛地采納。板式橡膠支座由于其構造簡單、加工制作方便、成本低廉的優(yōu)勢在這些橋梁中廣泛使用。但是斜梁橋和曲線梁橋的力學特性和直線梁橋的力學特性差別較大,它們都存在彎扭耦合等效應,這些效應對橋梁都會產生不利影響,在施工及運營過程中受各種因素的影響會出現(xiàn)支座脫空、梁體偏位等問題,嚴重影響了橋梁的安全運營。本文依托新疆維吾爾自治區(qū)交通廳科技項目《橋梁支座檢測評估及更換技術研究》,對斜梁橋和曲線梁橋板式橡膠支座設計原則和病害的防治措施進行研究。文章介紹了國內外橡膠支座的設計原則以及斜梁橋和曲線梁橋的受力特點,然后選取依托工程中的兩座橋為研究對象,利用有限元軟件Midas civil建立全橋模型,分析斜曲梁橋中板式橡膠支座的受力性能,并研究各影響因素對橡膠支座受力性能的影響程度和可能導致的支座病害。得到了斜曲梁橋中板式橡膠支座的不利受力后,利用有限元軟件Ansys和規(guī)范計算方法對支座內部的應力水平進行分析,研究板式橡膠支座劣化原因,確定支座內部應力分布狀況和各類病害的發(fā)生機理,為板式橡膠支座各種病害提供可靠的防治、處理措施。最后結合有限元計算結果和板式橡膠支座病害成因,從設計方面、施工方面、運營方面對斜曲梁橋的板式橡膠支座提出具體的防治措施和應對策略,以此提高橡膠支座的使用壽命,也確保了橋梁的安全運營。
[Abstract]:In recent years, highway construction and urban road traffic have been developed rapidly. Due to the influence of terrain and ground conditions, inclined beam bridge and curved beam bridge have been widely adopted.Plate rubber bearing is widely used in these bridges because of its simple structure, convenient processing and low cost.However, the mechanical properties of skew beam bridge and curved beam bridge are different from that of straight beam bridge, and they all have the effects of bending and torsional coupling, which will have adverse effects on the bridge.In the process of construction and operation, various factors will affect the bridge safety operation, such as support detachment, beam deflection and so on.Based on the scientific and technological project of Xinjiang Uygur Autonomous region Department of Communications, "study on Detection, Evaluation and replacement Technology of Bridge supports", this paper studies the design principles and prevention measures of slab rubber bearings for inclined girder bridges and curved girder bridges.This paper introduces the design principle of rubber bearing at home and abroad and the stress characteristics of inclined beam bridge and curved beam bridge. Then two bridges in the project are selected as the research object, and the full bridge model is established by using the finite element software Midas civil.The mechanical behavior of plate rubber bearing in skew curved beam bridge is analyzed, and the influence of various factors on the mechanical performance of rubber bearing and the possible bearing diseases are studied.After obtaining the unfavorable force of the plate rubber bearing in the skew curved beam bridge, the stress level inside the support was analyzed by using the finite element software Ansys and the standard calculation method, and the causes of the deterioration of the plate rubber bearing were studied.The stress distribution inside the bearing and the occurrence mechanism of various kinds of diseases are determined to provide reliable prevention and treatment measures for various diseases of plate rubber bearings.Finally, combining the result of finite element calculation and the cause of the plate rubber bearing disease, from the aspects of design, construction and operation, the paper puts forward concrete prevention measures and countermeasures to the plate rubber bearing of skew curved girder bridge.So as to improve the service life of rubber bearings, but also to ensure the safe operation of the bridge.
【學位授予單位】：長安大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U443.361

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