本文選題：橋梁　切入點：波形鋼腹板組合箱梁　出處：《湖南大學》2014年碩士論文

【摘要】：波形鋼腹板組合箱梁由混凝土頂、底板和波形鋼腹板組成，采用波折形鋼板替代傳統(tǒng)混凝土箱梁的混凝土腹板，能夠大大減輕了上部結構的自重，實現(xiàn)橋梁結構的輕型化，并進一步增大橋梁結構的跨越能力。隨著波形鋼腹板組合箱梁橋在我國被大量推廣和應用，目前更多的研究偏向于其基本力學特性及設計方法的研究，而對于波形鋼腹板組合箱梁橋地震性能的研究卻很少，因此有必要對其在地震作用下的抗震性能進行的研究，以確保這種新型橋梁結構能經受地震的考驗。本文圍繞波形鋼腹板組合箱梁橋地震響應特征主要進行了以下幾方面的工作： （1）首先查閱了大量中外文獻資料，對地震災害的特性及震害特點進行了論述，總結了常見的橋梁震害的表現(xiàn)形式。同時，回顧了波形鋼腹板組合箱梁橋的發(fā)展歷程，特別對其抗震性能的研究現(xiàn)狀進行了論述總結；最后結構基于性能的抗震設計熱點，對橋梁地震易損性分析理論進行了介紹。 （2）以一座典型的山區(qū)多跨橋梁為例，上部結構分別采用波形鋼腹板組合箱梁和常規(guī)混凝土箱梁兩種截面形式進行設計，然后基于MIDAS Civil有限元程序建立了有限元動力分析模型，，對兩者的動力特性進行了比較分析。 （3）根據最新的橋梁抗震設計規(guī)范，基于前一節(jié)的整體分析模型（多聯(lián)結構體系），采用反應譜分析方法對波形鋼腹板組合箱梁橋和傳統(tǒng)混凝土箱梁橋進行分析。分別考慮兩種工況：縱橋向輸入和橫橋向輸入。對比分析了波形鋼腹板組合箱梁橋與傳統(tǒng)混凝土箱梁橋地震響應的差異。 （4）以整體橋梁中的中間聯(lián)為例，基于OpenSees源代碼分析平臺，建立了橋梁結構的彈塑性有限元動力模型，并輸入了100條地震波進行時程分析。根據計算結果，基于橋梁地震易損性分析原理，對波形鋼腹板組合箱梁橋和傳統(tǒng)混凝土箱梁橋進行地震易損性分析，對比分析波形鋼腹板組合箱梁橋與傳統(tǒng)混凝土箱梁橋易損性的差異。 （5）對中美規(guī)范中橋梁合理抗震體系的相關內容進行比較分析，對合理抗震體系的基本特征和主要內容進行了總結。然后，結合本文的研究對象，從合理抗震體系的角度對波形鋼腹板組合箱梁橋的特點進行論述。 （6）對本文的研究工作進行了總結，批出了本文研究的不足之處。并對后續(xù)值得展開的工作進行了展望。
[Abstract]:The corrugated steel web composite box girder is composed of concrete top, bottom plate and corrugated steel web. The corrugated steel plate is used to replace the concrete web of the traditional concrete box girder, which can greatly reduce the weight of the superstructure and realize the light construction of the bridge structure.And further increase the bridge structure span capacity.With the wide application of corrugated steel web composite box girder bridges in China, more researches are focused on their basic mechanical properties and design methods, but few on seismic performance of corrugated steel web composite box girder bridges.Therefore, it is necessary to study the seismic behavior of the bridge structure under earthquake to ensure that the new bridge structure can withstand the earthquake test.In this paper, the seismic response characteristics of composite box girder bridge with corrugated steel webs are studied in the following aspects:In this paper, the characteristics of earthquake disaster and the characteristics of earthquake disaster are discussed, and the common forms of bridge earthquake damage are summarized.At the same time, the development course of the composite box girder bridge with corrugated steel web is reviewed, especially the research status of its seismic performance is summarized. Finally, the seismic vulnerability analysis theory of the bridge is introduced based on the focus of performance-based seismic design.Taking a typical multi-span bridge in mountainous area as an example, the superstructure is designed in the form of corrugated steel web composite box girder and conventional concrete box girder, and then the finite element dynamic analysis model is established based on MIDAS Civil finite element program.The dynamic characteristics of the two are compared and analyzed.According to the latest code for seismic design of bridges, based on the whole analysis model of the previous section, the response spectrum analysis method is used to analyze the corrugated steel web composite box girder bridge and the traditional concrete box girder bridge.Two conditions are considered: longitudinal bridge input and transverse bridge input.The difference of seismic response between the corrugated steel web composite box girder bridge and the traditional concrete box girder bridge is compared and analyzed.Taking the intermediate connection of the whole bridge as an example, the elastic-plastic finite element dynamic model of the bridge structure is established based on the OpenSees source code analysis platform, and 100 seismic waves are input for the time-history analysis.According to the calculation results, based on the seismic vulnerability analysis principle of bridges, the seismic vulnerability analysis of composite box girder bridges with corrugated steel webs and traditional concrete box girder bridges is carried out.The difference of vulnerability between corrugated steel web composite box girder bridge and traditional concrete box girder bridge is analyzed.This paper makes a comparative analysis of the relevant contents of the reasonable seismic system of bridges in Chinese and American codes, and summarizes the basic characteristics and main contents of the reasonable aseismic system.Then, the characteristics of the corrugated steel web composite box girder bridge are discussed from the point of view of the reasonable aseismic system combined with the research object of this paper.The research work of this paper is summarized and the deficiency of this study is approved.The future work is also prospected.
【學位授予單位】：湖南大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：U442.55;U448.213

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