本文選題：獨(dú)柱橋墩橋梁 + 潮汐交通��； 參考：《貴州大學(xué)》2015年碩士論文

【摘要】：由于獨(dú)柱墩橋梁的結(jié)構(gòu)受力的特殊性和復(fù)雜性,同時(shí)加上對(duì)于獨(dú)柱墩橋梁在潮汐交通下的傾覆倒塌安全穩(wěn)定性事故研究資料有相當(dāng)?shù)南∩?因此本文有必要根據(jù)實(shí)際獨(dú)柱墩橋梁,將從潮汐交通對(duì)獨(dú)柱墩橋梁導(dǎo)致的靜力效應(yīng)和動(dòng)力效應(yīng)來(lái)分別對(duì)獨(dú)柱墩橋梁的安全穩(wěn)定性進(jìn)行分析研究。著重展開(kāi)以下方面的研究:本文通過(guò)有限元軟件ABAQUS對(duì)不同組合潮汐交通對(duì)城市獨(dú)柱墩橋梁結(jié)構(gòu)的靜力效應(yīng)和動(dòng)力效應(yīng),找出對(duì)城市獨(dú)柱墩橋梁結(jié)構(gòu)安全性有影響的要素。本文得到的結(jié)論如下:(1)潮汐交通考慮發(fā)動(dòng)機(jī)怠速下的動(dòng)力效應(yīng)的數(shù)據(jù)反映出與潮汐交通的靜力效應(yīng)基本一致的規(guī)律。而且當(dāng)全部由三軸重型車(chē)組成非常規(guī)潮汐交通導(dǎo)致的動(dòng)力荷載效應(yīng)是上述其他車(chē)輛組成的潮汐交通流模型中動(dòng)力荷載效應(yīng)最大的。(2)潮汐交通考慮發(fā)動(dòng)機(jī)怠速下的動(dòng)力效應(yīng)和不考慮怠速情況下的靜力效應(yīng)其規(guī)律為:三軸重型車(chē)輛的動(dòng)力荷載效應(yīng)兩軸重型車(chē)輛的動(dòng)力荷載效應(yīng)大型客車(chē)的動(dòng)力荷載效應(yīng)小型客車(chē)的動(dòng)力荷載效應(yīng)。(3)潮汐交通考慮發(fā)動(dòng)機(jī)怠速下的動(dòng)力效應(yīng)與相同潮汐交通組合下不考慮怠速情況下的靜力效應(yīng)要大很多,對(duì)潮汐交通作用在獨(dú)柱墩橋梁上時(shí)候,不僅要考慮潮汐交通對(duì)獨(dú)柱墩橋梁的靜力荷載效應(yīng)影響,同時(shí)要考慮怠速情況下的動(dòng)力荷載效應(yīng)對(duì)獨(dú)柱墩橋梁的影響。本文的研究不但對(duì)于減少或者盡量避免上述事故的發(fā)生問(wèn)題具有預(yù)防的實(shí)際意義,在一定程度上也可以對(duì)獨(dú)柱墩橋梁有一個(gè)更加深入的了解,同時(shí)也可以通過(guò)綜合考慮影響?yīng)氈諛蛄旱陌踩�(wěn)定性要素,在設(shè)計(jì)或者交通管制中明確地針對(duì)這些不利要素來(lái)減少或者盡量避免此類(lèi)事件的發(fā)生,從而使獨(dú)柱墩橋梁更能發(fā)揮出其對(duì)城市經(jīng)濟(jì)發(fā)展的積極貢獻(xiàn)。
[Abstract]:Because of the particularity and complexity of the single column pier bridge structure, and the research data of the toppling collapse safety and stability accident of the single column pier bridge under tidal traffic, Therefore, it is necessary to analyze the safety and stability of single-column pier bridge based on the static and dynamic effects caused by tidal traffic. The following aspects are emphatically studied: in this paper, the static and dynamic effects of different combinations of tidal traffic on the structure of urban single-pier bridges are studied by using the finite element software Abaqus, and the factors that affect the safety of urban single-pier bridges are found out. The conclusions obtained in this paper are as follows: (1) the data of tidal traffic considering the dynamic effect of engine idle speed reflect the law that is basically consistent with the static effect of tidal traffic. Moreover, when the dynamic load effect caused by the unconventional tidal traffic composed of all three axle heavy vehicles is the largest in the tidal traffic flow model composed of the other vehicles mentioned above. (2) the tidal traffic considering engine idling speed has the largest dynamic load effect. (2) Tidal traffic takes into account the idling speed of the engine. Dynamic effect and static effect without considering idling the law is: dynamic load effect of three-axle heavy vehicle dynamic load effect of two-axle heavy vehicle dynamic load effect of large bus dynamic load effect of minibus It is suggested that (3) the dynamic effect of the engine at idle speed in tidal traffic is much greater than that in the same combination of tidal traffic without considering idling speed. When the tidal traffic is acting on a single column pier bridge, not only the influence of tide traffic on the static load effect of the single column pier bridge should be considered, but also the influence of the dynamic load effect on the single column pier bridge under the condition of idle speed should be considered. The research in this paper not only has practical significance in reducing or avoiding the above problems, but also has a deeper understanding of the bridge with single column pier to a certain extent. At the same time, by synthetically considering the factors affecting the safety and stability of single-pier bridges, we can explicitly address these adverse factors in the design or traffic control to reduce or avoid the occurrence of such incidents as far as possible. So that the single pier bridge can play its positive contribution to the urban economic development.
【學(xué)位授予單位】：貴州大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：U441

【參考文獻(xiàn)】

相關(guān)期刊論文 前2條

1 劉鵬;劉英舜;;潮汐式交通特性分析及應(yīng)對(duì)措施研究[J];交通科技與經(jīng)濟(jì);2011年03期

2 孫守旺;孫利民;;基于實(shí)測(cè)的公路橋梁車(chē)輛荷載統(tǒng)計(jì)模型[J];同濟(jì)大學(xué)學(xué)報(bào)(自然科學(xué)版);2012年02期

相關(guān)博士學(xué)位論文 前1條

1 王玉萍;城市軌道交通客流預(yù)測(cè)與分析方法[D];長(zhǎng)安大學(xué);2011年

相關(guān)碩士學(xué)位論文 前1條

1 鄧澤城;獨(dú)柱整體式板梁橋靜動(dòng)力分析與簡(jiǎn)化計(jì)算方法[D];長(zhǎng)安大學(xué);2010年

，

本文編號(hào)：2090991