【摘要】：隨著社會(huì)的發(fā)展,城市化規(guī)模不斷擴(kuò)大,地鐵在應(yīng)對(duì)地上交通擁擠上起到了重要作用。在城市地鐵隧道的建設(shè)中,難免會(huì)遇到土質(zhì)相對(duì)軟弱并夾雜人工雜填土的第四紀(jì)地層,會(huì)遇到周邊高樓林立、城市車水馬龍、地下市政線路冗雜、地下建筑結(jié)構(gòu)淺埋等復(fù)雜的交通環(huán)境,而淺埋暗挖法由于不干擾地面交通正常運(yùn)行、工程施工成本較少、無(wú)需太多專項(xiàng)工程設(shè)備、無(wú)需考慮拆遷的難題、工程方法靈活等諸多特點(diǎn),解決了上述難題,因此成為了一種在地下工程中大量應(yīng)用的工法。地鐵隧道開挖不僅要滿足自身安全,同時(shí)也要保證周邊既有結(jié)構(gòu)不受破壞,然而在實(shí)際的施工過(guò)程中,注漿加固是在施工過(guò)程中簡(jiǎn)單有效的方式。本文基于查閱國(guó)內(nèi)外大量文獻(xiàn),依托北京地鐵7號(hào)線九龍山站～大郊亭站區(qū)間下穿既有結(jié)構(gòu)大郊亭西人行天橋以及多條市政管線,分析隧道開挖對(duì)既有橋樁以及管線變形的影響。同時(shí)通過(guò)MIDAS-GTS數(shù)值模擬計(jì)算與監(jiān)控量測(cè)數(shù)據(jù)進(jìn)行對(duì)比,驗(yàn)證數(shù)值模擬計(jì)算的可靠性。本文主要研究?jī)?nèi)容如下：(1)通過(guò)查找并整理大量淺埋暗挖法地鐵隧洞施工對(duì)既有結(jié)構(gòu)影響課題的國(guó)內(nèi)外文獻(xiàn),歸納總結(jié)前人在本課題理論的研究現(xiàn)狀與理論。(2)依托北京地鐵北京地鐵7號(hào)線九龍山站～大郊亭站區(qū)間下穿既有結(jié)構(gòu)大郊亭西人行天橋以及多條市政管線,通過(guò)有限元軟件按照實(shí)際施工工序建立三維計(jì)算模型進(jìn)行分析,分析出淺埋暗挖法隧道開挖和注漿加固對(duì)既有橋樁及管線的豎向位移和水平位移影響。(3)通過(guò)搜集現(xiàn)場(chǎng)實(shí)際監(jiān)測(cè)數(shù)據(jù),并與數(shù)值模擬數(shù)據(jù)進(jìn)行對(duì)比分析,證明計(jì)算模型的準(zhǔn)確可靠。(4)通過(guò)對(duì)比注漿加固與未注漿加固,淺埋暗挖法隧道開挖對(duì)既有結(jié)構(gòu)的不同影響,證明注漿加固的有效性。
[Abstract]:With the development of society and the expansion of urbanization, subway plays an important role in dealing with overground traffic congestion. In the construction of urban subway tunnels, it is inevitable to encounter the Quaternary strata with relatively weak soil quality and mixed with artificial miscellaneous fill, the surrounding high-rise buildings, the traffic jumbled in the city, and the miscellaneous underground municipal lines. In the complicated traffic environment, such as shallow buried underground building structure, but the shallow buried excavation method does not interfere with the normal operation of ground traffic, the construction cost of the project is less, there is no need for too many special engineering equipment, and no need to consider the difficult problem of demolition and relocation. The flexibility of engineering methods has solved the above problems, so it has become a widely used engineering method in underground engineering. The excavation of subway tunnel should not only satisfy its own safety, but also ensure that the existing structures around it are not destroyed. However, grouting reinforcement is a simple and effective way in the actual construction process. Based on consulting a large number of documents at home and abroad, this paper relies on Jiulong Mountain Station ~ Great suburb Pavilion Station of Beijing Metro Line 7 to pass through the existing structure Great suburb Pavilion West pedestrian Flyover and several municipal pipelines. The influence of tunnel excavation on the deformation of existing bridge piles and pipelines is analyzed. At the same time, the reliability of the numerical simulation is verified by comparing the MIDAS-GTS numerical simulation with the monitoring data. The main contents of this paper are as follows: (1) by looking up and sorting out a large number of domestic and foreign literatures on the influence of shallow tunneling on existing structures, The current situation and theory of previous research on the theory of this subject are summarized and summarized. (2) depending on the Jiulong Mountain Station of Beijing Metro Line 7 ~ the Great suburb Pavilion Station, the existing structure of the Great suburb Pavilion West pedestrian Flyover and a number of municipal pipelines are passed under the existing structure. According to the actual construction procedure, the three-dimensional calculation model is established by the finite element software. The vertical displacement and horizontal displacement of existing bridge piles and pipelines are analyzed by excavation and grouting of shallow excavation method. (3) through collecting field monitoring data, and comparing with numerical simulation data, the paper analyzes the effect of tunnel excavation and grouting reinforcement on the vertical displacement and horizontal displacement of existing bridge piles and pipelines. It is proved that the calculation model is accurate and reliable. (4) the effectiveness of grouting reinforcement is proved by comparing grouting reinforcement with non-grouting reinforcement and the different effects of shallow tunneling on existing structures.
【學(xué)位授予單位】：中國(guó)地質(zhì)大學(xué)(北京)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：U456.3;U231.3

【參考文獻(xiàn)】

相關(guān)期刊論文 前2條

1 路德富;;水平高壓旋噴注漿技術(shù)在城市淺埋隧道預(yù)支護(hù)中的應(yīng)用[J];探礦工程(巖土鉆掘工程);2008年02期

2 張頂立,黃俊;地鐵隧道施工拱頂下沉值的分析與預(yù)測(cè)[J];巖石力學(xué)與工程學(xué)報(bào);2005年10期

相關(guān)博士學(xué)位論文 前1條

1 杜彬;地鐵車站淺埋暗挖法施工對(duì)鄰近樁基的影響及控制措施[D];北京交通大學(xué);2007年

，

本文編號(hào)：2136206