本文選題：鋼筋混凝土橋墩 + 延性抗震��； 參考：《安徽理工大學(xué)》2014年碩士論文

【摘要】：橋墩作為橋梁的重要結(jié)構(gòu)部分,其損壞常造成全橋的破壞。根據(jù)延性抗震的理念,在強(qiáng)震作用下,墩柱作為延性構(gòu)件應(yīng)具有足夠塑性變形能力,能產(chǎn)生塑性鉸區(qū),通過產(chǎn)生彈塑性變形來耗散地震能量,允許發(fā)生一定程度的損傷但不至于破壞�？梢�,對(duì)橋梁墩柱進(jìn)行延性抗震設(shè)計(jì)其意義重大。本文采用理論分析與工程實(shí)例相結(jié)合的方法,以利川市佛寶山旅游公路工程中的四號(hào)橋?yàn)楣こ瘫尘?對(duì)鋼筋混凝土柱式橋墩開展延性抗震設(shè)計(jì)的研究。 本文的研究內(nèi)容主要包含以下幾方面： (1)通過查閱資料了解現(xiàn)階段橋梁抗震設(shè)防的現(xiàn)狀,并進(jìn)一步深入研究學(xué)習(xí)延性抗震設(shè)計(jì)理論,根據(jù)延性抗震理念確立所選用的延性指標(biāo)及其參數(shù)； (2)分析確定鋼筋混凝土橋墩材料的本構(gòu)關(guān)系以及鋼筋混凝土橋墩塑性絞區(qū)特性,選用合理的簡化模型,理論上初步確定對(duì)鋼筋混凝土柱式橋墩延性性能有影響的潛在因素； (3)利用橋梁結(jié)構(gòu)分析軟件Midas/Civil對(duì)影響普通鋼筋混凝土墩柱和高墩延性性能的潛在因素進(jìn)行模擬分析,通過對(duì)比得出結(jié)論,提出改良措施,從而優(yōu)化鋼筋混凝土墩柱的結(jié)構(gòu)設(shè)計(jì)； (4)對(duì)利川市佛寶山旅游公路工程中的四號(hào)橋進(jìn)行整橋模型的反應(yīng)譜抗震分析,著重驗(yàn)算墩柱的抗震性能。 通過對(duì)上述內(nèi)容的研究分析,得知各潛在因素對(duì)鋼筋混凝土墩柱延性性能的影響,進(jìn)而優(yōu)化鋼筋混凝土墩柱的結(jié)構(gòu)設(shè)計(jì),提高橋墩延性性能,以利于橋梁結(jié)構(gòu)的抗震,為后續(xù)橋梁的抗震設(shè)計(jì)和橋墩的延性抗震分析提供參考依據(jù)。此外,通過對(duì)整橋模型的反應(yīng)譜分析可知,利川市佛寶山旅游公路工程中的四號(hào)橋滿足延性抗震的設(shè)計(jì)要求,為該橋?qū)嶋H抗震分析提供理論依據(jù)。
[Abstract]:As an important part of bridge structure, the damage of piers often causes damage to the whole bridge. According to the idea of ductile earthquake resistance, the pier column as a ductile member should have enough plastic deformation ability to produce plastic hinge area and dissipate seismic energy by producing elastic-plastic deformation under the action of strong earthquake. A certain degree of damage is allowed but not damaged. Therefore, the ductile seismic design of bridge pier is of great significance. In this paper, the method of combining theoretical analysis with engineering examples is used to study the ductile seismic design of reinforced concrete column pier with the background of No.4 Bridge in Fobaoshan tourist Highway Project of Lichuan City. The research content of this paper mainly includes the following aspects: 1) to understand the present situation of seismic fortification of bridges at this stage, and to further study the theory of ductile seismic design, and to establish the selected ductility index and its parameters according to the concept of ductile seismic design. (2) analyzing and determining the constitutive relation of reinforced concrete pier material and the characteristics of plastic twist zone of reinforced concrete pier, selecting reasonable simplified model, and theoretically determining the potential factors that have influence on the ductility of reinforced concrete column pier; 3) using the bridge structure analysis software Midas/Civil to simulate and analyze the potential factors that affect the ductility performance of the ordinary reinforced concrete pier column and the high pier. The conclusion is drawn through the comparison, and the improvement measures are put forward to optimize the structural design of the reinforced concrete pier column. (4) the response spectrum seismic analysis of the whole bridge model is carried out on the 4th Bridge of Fobaoshan tourist Highway Project in Lichuan City, with emphasis on the seismic performance of the pier column. Through the research and analysis of the above contents, the influence of various potential factors on the ductility of reinforced concrete pier column is obtained, and then the structural design of reinforced concrete pier column is optimized, and the ductility performance of bridge pier is improved, which is beneficial to the earthquake resistance of bridge structure. It provides reference for seismic design of subsequent bridges and ductile seismic analysis of piers. In addition, through the response spectrum analysis of the whole bridge model, it can be seen that the No. 4 bridge in the Fobaoshan tourist highway project in Lichuan city meets the design requirements of ductile seismic resistance, which provides a theoretical basis for the practical seismic analysis of the bridge.
【學(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U443.22;U442.55

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本文編號(hào)：1908474