本文選題：地鐵 + 臨近管線��； 參考：《西安科技大學(xué)》2017年碩士論文

【摘要】：城市基礎(chǔ)建設(shè)發(fā)展迅速,國際化大都市已日漸形成,地鐵項(xiàng)目已在全國一線城市全面興建。然而,地下工程的施工擾動對地層環(huán)境的影響問題也日趨凸顯,地鐵隧道的建設(shè)對城市既有建筑環(huán)境具有潛在的威脅。城市地鐵隧道沿著城市主干道方向布設(shè),將不可避免的穿越大量的地下管線。地鐵施工將導(dǎo)致地下管線產(chǎn)生附加應(yīng)力和變形,從而影響地下管線的安全性。為了保證地鐵施工能夠在管線正常使用的前提下安全有序的進(jìn)行,這就需要學(xué)者們深入研究地鐵施工對臨近管線影響的規(guī)律變化情況。本文以西安地鐵5號線青岳區(qū)間隧道下穿地下管線為工程背景,通過地表和地下管線沉降的現(xiàn)場監(jiān)測數(shù)據(jù),選取典型的污水管線為研究對象,分析監(jiān)測數(shù)據(jù),并運(yùn)用數(shù)值模擬的方法,詳細(xì)分析了臺階法施工對地層以及管線造成的影響。系統(tǒng)研究了地鐵施工對臨近管線的影響規(guī)律。在分析研究的過程中得到了以下結(jié)論:1、隧道施工掌子面跨過地裂縫時(shí),地裂縫與隧道掌子面相互作用引起的地表沉降影響范圍主要是在地裂縫活動強(qiáng)烈的變形區(qū),地表沉降變化趨勢整體呈現(xiàn)臺階狀變化。2、在采用臺階法施工時(shí),地下管線在一臺階施工時(shí)產(chǎn)生的沉降更為突出,達(dá)到了總沉降量的44.3%,二臺階占28.7%,三臺階占19.9%。因此,在施工的過程中,注重對一臺階的施工控制,可以達(dá)到減小管線沉降的作用。3、臺階法施工時(shí),隧道施工造成的地層沉降變化情況是最大地層沉降發(fā)生在拱頂范圍,最大橫向收斂發(fā)生在拱腰位置。4、黃土地區(qū)新建隧道施工對既有結(jié)構(gòu)的沉降影響范圍在0~3.2D(D為隧道外徑),沉降率變化最大的位置在1.0D附近,因此,新建隧道與重要地下管線相交時(shí)可以通過加大二者間距來消除施工的影響。
[Abstract]:Urban infrastructure has developed rapidly, international metropolis has been formed day by day, and subway projects have been built all over the country. However, the influence of underground engineering construction disturbance on the formation environment is becoming increasingly prominent, and the construction of subway tunnel has a potential threat to the existing urban building environment. The urban subway tunnel is arranged along the main road of the city, which will inevitably pass through a large number of underground pipelines. Subway construction will result in additional stress and deformation of underground pipeline, which will affect the safety of underground pipeline. In order to ensure that the subway construction can be carried out safely and orderly under the premise of the normal use of pipelines, it is necessary for scholars to deeply study the influence of subway construction on adjacent pipelines. In this paper, the underground pipeline of Qingyue section of Xi'an Metro Line 5 is taken as the engineering background. Through the monitoring data of ground surface and underground pipeline settlement, the typical sewage pipeline is selected as the research object, and the monitoring data are analyzed. The influence of step method on formation and pipeline is analyzed in detail by numerical simulation. The influence of subway construction on adjacent pipelines is systematically studied. In the course of analysis and research, the following conclusion is drawn: 1. When the face of tunnel construction passes through the ground crack, the influence range of the ground subsidence caused by the interaction between the ground crack and the tunnel face is mainly in the deformation area with strong ground fissure activity. The variation trend of surface subsidence presents step shape change as a whole. When the step method is adopted, the settlement produced by underground pipeline in the first step construction is more prominent, reaching 44.33cm of the total settlement, the second step occupies 28.7 steps and the third step occupies 19.9. Therefore, in the construction process, pay attention to the construction control of one step, can achieve the function of reducing the pipeline settlement .3.When the step method is constructed, the variation of stratum settlement caused by the tunnel construction is that the maximum ground settlement occurs in the arch roof. The maximum lateral convergence occurs at the arch position. 4. The settlement influence range of the new tunnel construction on the existing structure in loess area is 0~3.2D(D as the tunnel outer diameter, and the position where the settlement rate changes the most is near 1.0D. When the new tunnel intersects with the important underground pipeline, the influence of construction can be eliminated by increasing the distance between the two.
【學(xué)位授予單位】：西安科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：U456.3;U231.3;TU990.3

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 胡斌;莫云;胡新麗;唐輝明;馮曉臘;;Peck法在武漢地鐵隧道地表沉降預(yù)測中的適用性分析[J];工程勘察;2012年07期

2 孟海;李杰;陳雋;吳華勇;;地下管線-土體動力相互作用試驗(yàn)研究[J];工業(yè)建筑;2010年08期

3 王夢恕;;中國鐵路、隧道與地下空間發(fā)展概況[J];隧道建設(shè);2010年04期

4 魏綱;魏新江;裘新谷;姚寧;;過街隧道施工對地下管線影響的三維數(shù)值模擬[J];巖石力學(xué)與工程學(xué)報(bào);2009年S1期

5 韋凱;雷震宇;周順華;;盾構(gòu)隧道下穿地下管線的變形控制因素分析[J];地下空間與工程學(xué)報(bào);2008年02期

6 畢繼紅;劉偉;江志峰;;隧道開挖對地下管線的影響分析[J];巖土力學(xué);2006年08期

7 施成華,彭立敏,劉寶琛;淺埋隧道開挖對地表建筑物的影響[J];巖石力學(xué)與工程學(xué)報(bào);2004年19期

8 吳波,高波,索曉明,劉維寧,史玉新;城市地鐵隧道施工對管線的影響研究[J];巖土力學(xué);2004年04期

9 姬永紅;隧道施工引起橫向地層沉降的隨機(jī)預(yù)測[J];巖土工程技術(shù);2004年01期

10 吳小剛,張土喬,張儀萍,李洵;管道埋深對管-土耦合應(yīng)力的影響規(guī)律淺析[J];水利水電科技進(jìn)展;2003年06期

相關(guān)博士學(xué)位論文 前2條

1 王霆;地鐵淺埋暗挖法施工對鄰近管線的影響與控制[D];北京交通大學(xué);2009年

2 吳為義;盾構(gòu)隧道周圍地下管線的性狀研究[D];浙江大學(xué);2008年

相關(guān)碩士學(xué)位論文 前2條

1 肖旺輝;隧道盾構(gòu)對土體變形及地下管線影響的研究[D];華中科技大學(xué);2007年

2 符賓賓;軟弱圍巖雙連拱隧道施工過程的數(shù)值模擬研究[D];西南交通大學(xué);2005年

，

本文編號：1900373