本文關(guān)鍵詞：雙圓柱墩橋梁抗震設(shè)計方法研究　出處：《鄭州大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 橋梁 抗震設(shè)計 pushover方法 抗震性能評估

【摘要】：橋梁是交通運(yùn)輸中的關(guān)鍵樞紐,一旦遇到地震破壞,將給震后救災(zāi)恢復(fù)工作和地震應(yīng)急帶來極大的難度。因此,對于地震區(qū)的橋梁來說,做到事先預(yù)防十分重要。作為橋梁設(shè)計人員,要恰當(dāng)?shù)卮_定橋梁抗震的設(shè)防目標(biāo),根據(jù)橋梁抗震的設(shè)防目標(biāo)進(jìn)行抗震設(shè)計,正確的評估橋梁的抗震性能,對達(dá)不到抗震要求的橋梁提出加固改造措施。基于橋梁抗震設(shè)計的重要性和必要性,本文對高速公路常用的雙柱式橋梁的抗震進(jìn)行了深入研究,具體內(nèi)容如下：1、本文對地震的分類進(jìn)行了系統(tǒng)的介紹,詳細(xì)的介紹了橋梁主要的震害形式,對我國公路橋梁抗震的需要作了進(jìn)一步的強(qiáng)調(diào)。2、對橋梁抗震設(shè)計方法、橋梁抗震性能評估的方法和pushover方法的原理、假定、步驟進(jìn)行了詳細(xì)的闡述。3、采用MIDAS軟件建立模型,分析不同側(cè)向加載模式和邊界條件對pushover方法的影響。4、采用pushover方法對一座中橋和一座大橋橋墩的抗震性能進(jìn)行評估,通過計算來評估橋墩的結(jié)構(gòu)變形和抗剪強(qiáng)度是否滿足抗震設(shè)計要求。
[Abstract]:Bridge is the key hub in transportation. Once it is damaged by earthquake, it will bring great difficulty to the disaster relief and recovery work and earthquake emergency. Therefore, for the bridge in earthquake area. It is very important to prevent in advance. As a bridge designer, it is necessary to properly determine the seismic fortification target of the bridge, according to the seismic target of the bridge seismic design, and correctly evaluate the seismic performance of the bridge. Based on the importance and necessity of aseismic design of bridges, the aseismic behavior of two-column bridges commonly used in expressway is deeply studied in this paper. The specific contents are as follows: 1. This paper systematically introduces the classification of earthquakes, introduces in detail the main earthquake damage forms of bridges, and makes further emphasis on the need of earthquake resistance of highway bridges in China. The aseismic design method of bridge, the evaluation method of seismic performance of bridge and the principle of pushover method are discussed in detail. The model is built with MIDAS software. The influence of different lateral loading modes and boundary conditions on pushover method is analyzed. The seismic performance of a middle bridge and a bridge pier is evaluated by pushover method. The structural deformation and shear strength of pier are evaluated by calculation.
【學(xué)位授予單位】：鄭州大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U442.55

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本文編號：1427243