【摘要】：由于大中型城市目前的地面交通設(shè)施已進(jìn)入飽和狀態(tài),交通系統(tǒng)已經(jīng)逐漸向地下拓展,尤其是一線城市,地鐵交通已經(jīng)成為人們出行必不可少的交通工具,隨之而來的盾構(gòu)隧道施工也成了地下結(jié)構(gòu)施工的重要方式。盾構(gòu)施工下穿鐵路時(shí),不可避免會(huì)帶來一定程度的地面、鐵路軌道路基沉降,若沉降超出鐵路軌道標(biāo)準(zhǔn)允許范圍,可能導(dǎo)致地面不均勻沉降及鐵路橫向縱向的位移,存在安全隱患。因此,在盾構(gòu)隧道下穿鐵路施工時(shí),要重視鐵路路基加固措施,并制定有效的施工技術(shù)措施,通過對(duì)土層和鐵路地基實(shí)時(shí)沉降監(jiān)測,進(jìn)而調(diào)整和優(yōu)化施工技術(shù)參數(shù),減少盾構(gòu)工作時(shí)隧道周圍土層受到的影響,從而滿足鐵路遠(yuǎn)近期的路基沉降要求,確保鐵路軌道幾何狀態(tài)達(dá)標(biāo)及線路運(yùn)輸安全,是一個(gè)值得深入研究的課題。本文以上海軌道交通17號(hào)線地鐵盾構(gòu)下穿滬杭鐵路工程施工為背景,采用數(shù)值模擬三維建模計(jì)算研究,用經(jīng)驗(yàn)公式驗(yàn)證對(duì)比,并在整個(gè)盾構(gòu)推進(jìn)過程中對(duì)鐵路軌道及路基變形進(jìn)行現(xiàn)場施工監(jiān)測。通過數(shù)值模擬與實(shí)測數(shù)據(jù)對(duì)比,數(shù)值模擬與經(jīng)驗(yàn)公式驗(yàn)證對(duì)比分析及盾構(gòu)下穿施工控制效果,主要取得以下成果:根據(jù)理論計(jì)算結(jié)果,提出盾構(gòu)穿越鐵路路基段施工的具體保護(hù)措施,研究適用上海地區(qū)特殊土質(zhì)的各項(xiàng)施工參數(shù)�？偨Y(jié)鐵路路基沉降規(guī)律,進(jìn)而有利于鐵路運(yùn)輸企業(yè)對(duì)施工方實(shí)施標(biāo)準(zhǔn)化方案評(píng)審,進(jìn)行施工安全監(jiān)控。從而滿足鐵路路基遠(yuǎn)近期沉降的要求,滿足鐵路運(yùn)營的安全目標(biāo)。為地鐵下穿鐵路施工提供技術(shù)指導(dǎo)和建議,特別是類似上海地區(qū)地質(zhì)結(jié)構(gòu)的工程。
[Abstract]:As the ground transportation facilities in large and medium-sized cities are now saturated, the transportation system has gradually expanded underground, especially in first-tier cities. Subway traffic has become an essential means of transportation for people to travel. The following shield tunnel construction has become an important way of underground structure construction. When the shield tunneling is going through the railway, it will inevitably bring about a certain degree of subgrade settlement of the railway track. If the settlement exceeds the allowable range of the railway track standard, it may lead to the uneven settlement of the ground and the lateral and longitudinal displacement of the railway. There are hidden dangers to safety. Therefore, in the construction of railway under shield tunnel, attention should be paid to the reinforcement measures of railway subgrade, and effective construction technical measures should be formulated. Through monitoring the real time settlement of soil layer and railway foundation, the construction technical parameters should be adjusted and optimized. To reduce the influence of the soil around the tunnel during shield tunneling, so as to meet the roadbed settlement requirements of the railway in the near future, to ensure that the railway track geometry state standard and line transportation safety, is a subject worthy of further study. In this paper, based on the construction of Shanghai Rail Transit Line 17 subway shield tunneling through Shanghai-Hangzhou Railway, the three-dimensional modeling and calculation of numerical simulation is used, and the comparison is verified by empirical formula. Field construction monitoring of railway track and roadbed deformation is carried out during the whole shield tunneling process. Through the comparison of numerical simulation and measured data, numerical simulation and empirical formula to verify the comparative analysis and shield tunneling construction control effect, the main achievements are as follows: according to the theoretical calculation results, The concrete protection measures of shield tunneling through railway subgrade section are put forward, and the construction parameters suitable for special soil quality in Shanghai area are studied. Summing up the settlement law of railway subgrade, it is helpful for railway transportation enterprises to carry out standardization scheme evaluation and construction safety monitoring. In order to meet the requirements of railway roadbed settlement in the near future, meet the safety objectives of railway operation. This paper provides technical guidance and suggestions for the construction of subway underpass railway, especially for the similar geological structure in Shanghai area.
【學(xué)位授予單位】：中國鐵道科學(xué)研究院
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：U455.43

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 洪開榮;陳饋;馮歡歡;;中國盾構(gòu)技術(shù)的創(chuàng)新與突破[J];隧道建設(shè);2013年10期

2 胡相鈺;;盾構(gòu)下穿鐵路箱涵施工變形控制技術(shù)研究[J];鐵道建筑;2013年02期

3 張舵;;地鐵盾構(gòu)區(qū)間穿越既有鐵路技術(shù)措施研究[J];鐵道標(biāo)準(zhǔn)設(shè)計(jì);2013年02期

4 陳小娟;;南京地鐵三號(hào)線白雨區(qū)間下穿寧蕪鐵路沉降控制分析[J];黑龍江交通科技;2012年02期

5 莫振澤;李海波;李建朋;王長柏;鄒飛;朱小明;楊風(fēng)威;;地層加固對(duì)盾構(gòu)隧道下穿城際鐵路影響的三維數(shù)值模擬[J];中外公路;2011年04期

6 蘇卜坤;石玉華;張洪彬;;地鐵盾構(gòu)施工對(duì)上部房屋的影響及加固效果分析[J];人民珠江;2010年S1期

7 王慶國;孫玉永;;旋噴樁加固對(duì)控制盾構(gòu)下穿鐵路變形數(shù)值分析[J];地下空間與工程學(xué)報(bào);2008年05期

8 吳笑偉;;國內(nèi)外盾構(gòu)技術(shù)現(xiàn)狀與展望[J];建筑機(jī)械;2008年15期

9 曹劍峰;韋凱;;軟土地區(qū)盾構(gòu)下穿鐵路地表變形規(guī)律研究[J];甘肅科技;2008年04期

10 呂培林;周順華;;軟土地區(qū)盾構(gòu)隧道下穿鐵路干線引起的線路沉降規(guī)律分析[J];中國鐵道科學(xué);2007年02期

相關(guān)會(huì)議論文 前1條

1 王根;王林;;基于ANSYS盾構(gòu)區(qū)間下穿京廣鐵路施工的沉降分析[A];運(yùn)營安全與節(jié)能環(huán)保的隧道及地下空間暨交通基礎(chǔ)設(shè)施建設(shè)第四屆全國學(xué)術(shù)研討會(huì)論文集[C];2013年

，

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