發(fā)布時(shí)間：2018-04-03 00:22

  本文選題：橋梁　切入點(diǎn)：波形鋼腹板組合箱梁　出處：《湖南大學(xué)》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(jié)構(gòu)的自重，實(shí)現(xiàn)橋梁結(jié)構(gòu)的輕型化，并進(jìn)一步增大橋梁結(jié)構(gòu)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(yīng)用，目前更多的研究偏向于其基本力學(xué)特性及設(shè)計(jì)方法的研究，而對(duì)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(duì)其在地震作用下的抗震性能進(jìn)行的研究，以確保這種新型橋梁結(jié)構(gòu)能經(jīng)受地震的考驗(yàn)。本文圍繞波形鋼腹板組合箱梁橋地震響應(yīng)特征主要進(jìn)行了以下幾方面的工作： （1）首先查閱了大量中外文獻(xiàn)資料，對(duì)地震災(zāi)害的特性及震害特點(diǎn)進(jìn)行了論述，總結(jié)了常見的橋梁震害的表現(xiàn)形式。同時(shí)，回顧了波形鋼腹板組合箱梁橋的發(fā)展歷程，特別對(duì)其抗震性能的研究現(xiàn)狀進(jìn)行了論述總結(jié)；最后結(jié)構(gòu)基于性能的抗震設(shè)計(jì)熱點(diǎn)，對(duì)橋梁地震易損性分析理論進(jìn)行了介紹。 （2）以一座典型的山區(qū)多跨橋梁為例，上部結(jié)構(gòu)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(jìn)行設(shè)計(jì)，然后基于MIDAS Civil有限元程序建立了有限元?jiǎng)恿Ψ治瞿Ｐ�，，�?duì)兩者的動(dòng)力特性進(jìn)行了比較分析。 （3）根據(jù)最新的橋梁抗震設(shè)計(jì)規(guī)范，基于前一節(jié)的整體分析模型（多聯(lián)結(jié)構(gòu)體系），采用反應(yīng)譜分析方法對(duì)波形鋼腹板組合箱梁橋和傳統(tǒng)混凝土箱梁橋進(jìn)行分析。分別考慮兩種工況：縱橋向輸入和橫橋向輸入。對(duì)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(yīng)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(tái)，建立了橋梁結(jié)構(gòu)的彈塑性有限元?jiǎng)恿δＰ�，并輸入�?00條地震波進(jìn)行時(shí)程分析。根據(jù)計(jì)算結(jié)果，基于橋梁地震易損性分析原理，對(duì)波形鋼腹板組合箱梁橋和傳統(tǒng)混凝土箱梁橋進(jìn)行地震易損性分析，對(duì)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(duì)中美規(guī)范中橋梁合理抗震體系的相關(guān)內(nèi)容進(jìn)行比較分析，對(duì)合理抗震體系的基本特征和主要內(nèi)容進(jìn)行了總結(jié)。然后，結(jié)合本文的研究對(duì)象，從合理抗震體系的角度對(duì)波形鋼腹板組合箱梁橋的特點(diǎn)進(jìn)行論述。 （6）對(duì)本文的研究工作進(jìn)行了總結(jié)，批出了本文研究的不足之處。并對(duì)后續(xù)值得展開的工作進(jìn)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(xué)位授予單位】：湖南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U442.55;U448.213

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