發(fā)布時間：2018-07-13 08:17

【摘要】：重慶軌道三號線是連接巴南魚洞和江北機場的重要交通樞紐干線,路線從地下穿越了若干高層建筑,或跨越兩江,重慶軌道三號線的設(shè)計和施工遇到了嚴峻的考驗。論文主要研究了地面高層建筑對重慶軌道三號線隧道的影響,建立了三維地質(zhì)模型和有限元數(shù)值分析模型,分析地面高層建筑對地下隧道的影響,判斷和評估隧道結(jié)構(gòu)的安全程度。論文主要研究內(nèi)容為:(1)對受影響段隧道的巖層進行鉆孔取樣,并對試樣進行了巖土室內(nèi)試驗,利用鉆孔進行聲波測試,和原位高清成像測試,以查明受影響段隧道工程地質(zhì)的詳細情況;(2)利用重慶市勘測院自主研發(fā)的城市地下空間信息集成管理平臺,對受影響段隧道的地層構(gòu)造建立工程地質(zhì)三維模型,研究地面高層建筑對地下隧道的影響情況;(3)根據(jù)對受影響段隧道的襯砌進行混凝土強度、碳化深度和襯砌裂縫檢測和襯砌滲水觀測數(shù)據(jù),建立高層建筑對軌道三號線的影響的有限元數(shù)值分析模型,并進行數(shù)值模擬分析,得到隧道襯砌結(jié)構(gòu)在高層建筑的影響下的受力和位移變化情況,據(jù)此評估地下隧道結(jié)構(gòu)的安全性。通過某地產(chǎn)項目高層建筑施工對軌道交通三號線龍頭寺至童家院子區(qū)間隧道相互影響的分析調(diào)查和數(shù)值模擬計算可以得到高層建筑的施工對隧道產(chǎn)生了一定影響,但仍在安全可控程度范圍以內(nèi)。如果高層建筑的高度繼續(xù)增加,應(yīng)采取妥當(dāng)技術(shù)措施,嚴格控制隧道襯砌結(jié)構(gòu)應(yīng)力及軌道傾斜變形,確保軌道交通三號線的安全運營。
[Abstract]:Chongqing track No. 3 is an important transportation hub connecting Banan Yudong and Jiangbei Airport. The route has crossed several high-rise buildings or crossed two rivers from underground. The design and construction of Chongqing track No. 3 have met a severe test. The paper mainly studies the influence of the ground high-rise building on the tunnel of Chongqing track Line 3, establishes the three-dimensional geological model and the finite element numerical analysis model, and analyzes the influence of the ground high-rise building on the underground tunnel. To judge and evaluate the safety of tunnel structure. The main contents of this paper are as follows: (1) sampling the rock strata of the affected section of the tunnel, and carrying out the laboratory tests of the samples in geotechnical field, using the boreholes to test the acoustic waves, and the in-situ high-definition imaging tests. In order to find out the detailed situation of the tunnel engineering geology in the affected section, (2) using the integrated management platform of urban underground space information developed by Chongqing Survey Institute, the three-dimensional engineering geological model of the affected section tunnel's stratigraphic structure is established. The influence of ground high-rise building on underground tunnel is studied. (3) according to the data of concrete strength, carbonation depth, lining crack detection and lining seepage observation, The finite element numerical analysis model of the influence of high-rise building on track No. 3 is established, and numerical simulation analysis is carried out to obtain the change of stress and displacement of tunnel lining structure under the influence of high-rise building. The safety of underground tunnel structure is evaluated accordingly. Through the analysis, investigation and numerical simulation of the influence of the construction of high-rise building in a real estate project on the tunnel between the faucet temple and Tongjia courtyard of rail transit line No. 3, it can be concluded that the construction of the high-rise building has a certain influence on the tunnel. But it is still within the range of safety and control. If the height of high-rise building continues to increase, appropriate technical measures should be taken to strictly control the stress of tunnel lining structure and track tilt deformation to ensure the safe operation of Line 3 of rail transit.
【學(xué)位授予單位】：重慶交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U452;U456.3

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本文編號：2118752