本文選題：城市隧道 + 均勻布置�。� 參考：《中南大學(xué)》2014年碩士論文

【摘要】：摘要：近年來隨著我國(guó)在建城市隧道的長(zhǎng)度逐漸加大,半敞開式隧道中通風(fēng)口均勻布置自然通風(fēng)方案的確定逐漸成為城市隧道建設(shè)的重點(diǎn)和難點(diǎn)之一。基于此,本文結(jié)合湖南省交通廳科研項(xiàng)目“城市淺埋中長(zhǎng)隧道半敞開式自然通風(fēng)關(guān)鍵技術(shù)研究”(201023),基于流體力學(xué)理論和自然通風(fēng)隧道基本理論,運(yùn)用數(shù)值模擬方法,展開了半敞開式城市隧道通風(fēng)口均勻布置方案研究。主要內(nèi)容如下： (1)針對(duì)半敞開式城市隧道自然通風(fēng)的特征,在查閱參考文獻(xiàn)和調(diào)研實(shí)際工程的基礎(chǔ)上,得出影響隧道通風(fēng)效果的主要影響因素。 (2)基于城市隧道通風(fēng)理論和數(shù)值模擬方法,建立通風(fēng)口均勻布置城市隧道模型,并將隧道內(nèi)行車的模擬環(huán)境和自然環(huán)境“疊加”起來,獲得不同布置方案和不同行車速度下隧道內(nèi)流場(chǎng)的特性。 (3)在同一長(zhǎng)度隧道和相同通風(fēng)口布置方案模型下、不同長(zhǎng)度緩沖段時(shí),對(duì)比分析四個(gè)設(shè)計(jì)時(shí)速下流場(chǎng)內(nèi)測(cè)點(diǎn)的各項(xiàng)數(shù)據(jù),得到了緩沖段長(zhǎng)度的取值范圍。 (4)在隧道長(zhǎng)度和緩沖段長(zhǎng)度以及通風(fēng)口長(zhǎng)度相同情況下而相鄰?fù)L(fēng)口之間間距不同時(shí),對(duì)比四個(gè)設(shè)計(jì)時(shí)速下隧道內(nèi)流場(chǎng)的變化,得到了相鄰?fù)L(fēng)口間距與通風(fēng)口長(zhǎng)度的比例關(guān)系。 (5)綜合整理和分析數(shù)值模擬結(jié)果,量化分析了行車速度和通風(fēng)面積對(duì)半敞開式城市隧道自然通風(fēng)效果的影響,由對(duì)比數(shù)據(jù)結(jié)果得到通風(fēng)總面積與隧道頂面積的數(shù)量關(guān)系。
[Abstract]:Absrtact: in recent years, with the length of the urban tunnel under construction in our country gradually increasing, the determination of the natural ventilation scheme with uniform layout of the air vent in the semi-open tunnel has gradually become one of the key and difficult points in the construction of the urban tunnel. Based on this, this paper combines the scientific research project of Hunan Provincial Communications Department, "Research on the key Technologies of Semi-open Natural ventilation in shallow buried medium and long tunnels" (201023), based on the theory of fluid mechanics and the basic theory of natural ventilation tunnel, using numerical simulation method. A study on uniform layout of air vents in semi-open urban tunnels is carried out. The main contents are as follows: (1) in view of the characteristics of natural ventilation in semi-open urban tunnels, based on the reference documents and the investigation of practical projects, The main factors that influence the ventilation effect of the tunnel are obtained. (2) based on the ventilation theory and numerical simulation method of the city tunnel, the uniform layout model of the ventilation outlet in the city tunnel is established. The simulation environment and natural environment of the tunnel are "superimposed" to obtain the characteristics of the flow field in the tunnel under different layout schemes and different driving speeds. (3) under the same length tunnel and the same vent layout model, The data of four measured points in the downflow field with different lengths are compared and analyzed. The range of buffer length is obtained. (4) when the length of tunnel and buffer section and the length of vent are the same and the distance between adjacent vents is different, the variation of flow field in the tunnel under four design speeds is compared. The proportional relationship between the distance between the adjacent vents and the length of the vents is obtained. (5) the numerical simulation results are comprehensively arranged and analyzed, and the effects of driving speed and ventilation area on the natural ventilation effect of semi-open urban tunnels are quantitatively analyzed. The quantitative relationship between the total ventilation area and the top area of the tunnel is obtained from the comparison data.
【學(xué)位授予單位】：中南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U453.5

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 郭春信;關(guān)于公路隧道自然通風(fēng)問題的探討[J];地下工程與隧道;1994年03期

2 楊昌智,孫一堅(jiān);鐵路雙線隧道通風(fēng)的空氣動(dòng)力特性研究[J];湖南大學(xué)學(xué)報(bào)(自然科學(xué)版);1997年02期

3 陳玉遠(yuǎn);甘甜;;自然通風(fēng)在城市道路隧道中的應(yīng)用研究[J];隧道建設(shè);2012年03期

4 童艷;蘇榮華;龔延風(fēng);;豎井型自然通風(fēng)公路隧道氣流與污染物分布的影響因素研究[J];建筑科學(xué);2011年06期

5 朱培根;梅健;涂江峰;田義龍;徐萬里;劉軍;;豎井型城市隧道阻滯交通狀況下自然通風(fēng)模型試驗(yàn)研究[J];流體機(jī)械;2012年03期

6 童艷;施明恒;茅靳豐;鐘星燦;龔延風(fēng);李鐵柱;;豎井型公路隧道自然通風(fēng)過程的實(shí)驗(yàn)研究[J];暖通空調(diào);2009年09期

7 陳明;袁方;徐萬里;;豎井型城市隧道自然通風(fēng)哮喘效應(yīng)模型研究[J];山西建筑;2012年32期

8 鐘星燦;曾臻;;自然通風(fēng)公路隧道有害氣體濃度分布[J];鐵道工程學(xué)報(bào);2006年09期

9 孫廣臣;傅鶴林;巢萬里;;橋隧鄰接工程多源損傷室內(nèi)模型試驗(yàn)研究[J];中南林業(yè)科技大學(xué)學(xué)報(bào);2011年11期

10 霍峙屹;胥海倫;王子云;;頂部開孔集中布置對(duì)城市公路隧道自然通風(fēng)的影響[J];制冷與空調(diào)(四川);2012年05期

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