本文選題：高速公路橋梁 + 車-橋耦合振動(dòng)　； 參考：《長安大學(xué)》2014年碩士論文

【摘要】：本文針對高速公路橋梁的隨機(jī)交通量問題，通過對高速公路橋梁車-橋耦合振動(dòng)的分析研究，以西寶高速上某橋梁為實(shí)例，進(jìn)行實(shí)測調(diào)查，對其隨機(jī)特性進(jìn)行了詳細(xì)分析研究，并對隨機(jī)車流下的各種參數(shù)數(shù)據(jù)統(tǒng)計(jì)分析，進(jìn)而研究出各參數(shù)對橋梁沖擊系數(shù)的影響作用。隨著對車-橋耦合振動(dòng)作用的深入研究與發(fā)展的需要，，隨機(jī)車流各種參數(shù)與沖擊系數(shù)等相關(guān)問題還應(yīng)該進(jìn)一步的完善。 本人總結(jié)和借鑒了前人的研究結(jié)論和成果,針對高速公路隨機(jī)車流問題而展開,其主要研究工作包括： 1.對西寶高速上的某橋進(jìn)行了全天24小時(shí)連續(xù)的交通流量的實(shí)測調(diào)查，對車型、車速、車輛行駛橫向位置及車重等重要參數(shù)進(jìn)行了采集記錄，進(jìn)而對采集到的樣本數(shù)據(jù)的各車型占有的比例、行駛車道的分布比、車速分布、車重等重要參數(shù)進(jìn)行詳盡的統(tǒng)計(jì)并分析； 2.本次的隨機(jī)車流實(shí)測調(diào)查過程中，采集記錄了全天24小時(shí)車輪荷載連續(xù)作用下，8片梁的動(dòng)響應(yīng)極值參數(shù)，并對不同車型的動(dòng)響應(yīng)影響進(jìn)行統(tǒng)計(jì)分析，找出各車型對各片梁產(chǎn)生的響應(yīng)極值的統(tǒng)計(jì)規(guī)律性； 3.在本次隨機(jī)車流實(shí)測調(diào)查過程中，通過采集到的各梁體動(dòng)響應(yīng)極值的數(shù)據(jù)，進(jìn)行統(tǒng)計(jì)分析，計(jì)算出各車輛過橋引起的沖擊系數(shù)，并進(jìn)一步分析研究出車型、車重、車速以及車道等因素對沖擊系數(shù)的影響關(guān)系。 通過對以上內(nèi)容分析研究，最后得出了以下結(jié)論：（1）隨機(jī)車流的各參數(shù)分布與實(shí)際情況較為符合，比如車道的分配、不同時(shí)間段的車速分布等；（2）各片梁的動(dòng)響應(yīng)極值間接反映出了車輛在不同車道、不同時(shí)間段的行駛情況；（3）車速與沖擊系數(shù)呈現(xiàn)出了正相關(guān)的特性，而車重與沖擊系數(shù)呈現(xiàn)出了負(fù)相關(guān)特性。
[Abstract]:Aiming at the problem of random traffic volume of expressway bridge, through the analysis and research of vehicle-bridge coupling vibration of expressway bridge, taking a bridge on Xibao Expressway as an example, the paper carries out a practical survey, and makes a detailed analysis and study on its random characteristics.The influence of each parameter on the impact coefficient of the bridge is studied by statistical analysis of the data of the random vehicle flow.With the need of further research and development of vehicle-bridge coupling vibration, some related problems such as random vehicle flow parameters and impact coefficient should be further improved.This paper summarizes and draws lessons from the previous research conclusions and results, aiming at the problem of freeway random traffic flow. The main research work includes:1.The traffic flow of a bridge on Xibao Expressway was investigated 24 hours a day. The important parameters such as vehicle type, speed, lateral position and vehicle weight were collected and recorded.Then the proportion of each vehicle type, the distribution ratio of driveway, the speed distribution, the vehicle weight and other important parameters of the sample data collected are analyzed and analyzed in detail.2.In the course of the survey of random traffic flow, the dynamic response extreme parameters of 8 beams under the continuous load of 24 hours wheel load were collected and recorded, and the dynamic response of different vehicle models was analyzed statistically.Find out the statistical law of the response extremum of each type to each beam;3.In the course of the survey of the random traffic flow, through the collected data of the extreme value of the dynamic response of each beam body, the impact coefficient caused by each vehicle crossing the bridge is calculated, and the vehicle type and vehicle weight are further analyzed and studied.The influence of speed and driveway on the impact coefficient.Through the analysis and study of the above contents, the following conclusions are drawn: 1) the distribution of the parameters of the random traffic flow is in good agreement with the actual situation, such as the allocation of the driveway.The extreme value of dynamic response of each beam indirectly reflects the vehicle driving conditions in different driveways and different periods of time.The vehicle weight and impact coefficient showed a negative correlation.
【學(xué)位授予單位】：長安大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U441.3;U448.14

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 王海城;施尚偉;;橋梁沖擊系數(shù)影響因素分析及偏差成因[J];重慶交通大學(xué)學(xué)報(bào)(自然科學(xué)版);2007年05期

2 林梅,肖盛燮;橋梁車輛振動(dòng)分析理論評述[J];重慶交通學(xué)院學(xué)報(bào);1998年03期

3 朱漢華，曾慶元;列車－橋梁時(shí)變系統(tǒng)振動(dòng)能量隨機(jī)分析方法[J];長沙鐵道學(xué)院學(xué)報(bào);1994年04期

4 何度心;列車動(dòng)載[J];地震工程與工程振動(dòng);1988年04期

5 林升光;正常運(yùn)行狀態(tài)車輛荷載復(fù)合Poisson過程模型[J];福建師范大學(xué)學(xué)報(bào)(自然科學(xué)版);1995年02期

6 許士強(qiáng);陳水生;桂水榮;;公路橋梁汽車沖擊系數(shù)對比研究[J];工程建設(shè)與設(shè)計(jì);2006年12期

7 夏禾,張宏杰,曹艷梅,G.De Roeck;車橋耦合系統(tǒng)在隨機(jī)激勵(lì)下的動(dòng)力分析及其應(yīng)用[J];工程力學(xué);2003年03期

8 王潮海;王宗林;;車-橋耦合振動(dòng)分析的模態(tài)綜合方法[J];公路交通科技;2006年12期

9 程保榮,周玉勛;車橋耦合系統(tǒng)動(dòng)力分析的模態(tài)綜合技術(shù)[J];清華大學(xué)學(xué)報(bào)(自然科學(xué)版);2002年08期

10 劉長虹;黃虎;陳力華;吳偉蔚;;基于隨機(jī)過程下的交通流量預(yù)測方法[J];上海工程技術(shù)大學(xué)學(xué)報(bào);2006年02期

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