深圳地鐵5號線翻靈區(qū)間盾構(gòu)施工的關(guān)鍵技術(shù)問題及綜合對策研究
發(fā)布時間：2018-10-23 20:38
【摘要】：隨著城市建設(shè)的蓬勃發(fā)展和地下空間的不斷開拓,經(jīng)過豐富工程實踐的檢驗,盾構(gòu)工法以其地質(zhì)適應(yīng)性強、施工速度快、對周邊環(huán)境干擾小等優(yōu)點已成為修建地鐵隧道、越江公路隧道和輸水管隧道等城市地下工程施工工法的首選。為了滿足在城市繁華地區(qū)及特殊地下工程的施工,大量的新型盾構(gòu)施工技術(shù)應(yīng)運而生。就目前我國盾構(gòu)技術(shù)的使用情況而言,各種施工問題的解決、新技術(shù)的開發(fā)將成為當務(wù)之急,結(jié)合工程實際發(fā)展我國的盾構(gòu)技術(shù)是一個極具長遠意義的研究課題。本文以深圳地鐵5號線翻身站~靈芝站區(qū)間盾構(gòu)隧道為工程背景,針對土壓平衡盾構(gòu)近距離穿越建(構(gòu))筑物、盾構(gòu)隧道管片接縫防水、盾構(gòu)施工運輸組織和盾構(gòu)機空推礦山法區(qū)段等關(guān)鍵技術(shù)問題及其潛在的不利影響開展研究,并結(jié)合工程實際情況提出了相應(yīng)的綜合施工對策。(1)針對盾構(gòu)隧道施工對鄰近建(構(gòu))筑物基礎(chǔ)(以群樁基礎(chǔ)為主)的影響開展研究,以隧道開挖方位作為關(guān)鍵影響因素,分別在隧道埋深以及隧道與樁基水平距離不同的情況下,采用理論分析結(jié)合數(shù)值模擬的手段研究盾構(gòu)施工對群樁基礎(chǔ)的影響規(guī)律,并提出盾構(gòu)隧道近距離穿越建(構(gòu))筑物的施工安全控制對策。(2)通過對國內(nèi)現(xiàn)有盾構(gòu)隧道工程案例的調(diào)研分析,從管片接頭構(gòu)造形式、彈性橡膠密封墊的防水參數(shù)及材質(zhì)等方面,結(jié)合深圳地鐵5號線翻靈區(qū)間隧道工程的實際情況,提出了適用于本工程的盾構(gòu)隧道管片接縫防水措施。(3)對影響土壓平衡盾構(gòu)運輸效率的因素及盾構(gòu)施工運輸組織面臨的問題進行分析,通過主要施工材料的選擇及用量計算,確定了運輸設(shè)備選型及運輸組織方案,從提高設(shè)備運輸能力及合理組織運輸方案兩個方面提出相應(yīng)的運輸優(yōu)化措施。(4)針對盾構(gòu)機空推礦山法區(qū)段施工可能出現(xiàn)的盾構(gòu)機姿態(tài)難以控制、盾構(gòu)機卡殼、管片接縫滲漏水、管片破損開裂及上浮等施工風險問題,提出相應(yīng)的施工對策,既可縮短工期,降低工程成本,同時有效降低了施工風險。本文結(jié)合深圳地鐵5號線翻靈區(qū)間隧道工程實例,針對盾構(gòu)施工的流程及特殊地段的施工問題,提出了土壓平衡盾構(gòu)綜合施工對策,不僅完善了盾構(gòu)施工安全控制技術(shù),減小了施工難題處理不當對隧道結(jié)構(gòu)服役期安全的不利影響,同時確保了工程安全順利進行,取得了良好的社會效益和經(jīng)濟效益,對今后類似工程具有參考價值和借鑒意義。
[Abstract]:With the vigorous development of urban construction and the continuous development of underground space, through the examination of rich engineering practice, shield tunneling has become the construction of subway tunnel because of its advantages of strong geological adaptability, fast construction speed and little interference to the surrounding environment. The first choice of construction method for urban underground engineering such as cross-river highway tunnel and aqueduct tunnel. In order to meet the needs of the construction of special underground projects in prosperous areas of cities, a large number of new shield construction techniques emerged as the times require. As far as the application of shield technology in our country is concerned, the solution of various construction problems and the development of new technology will become an urgent matter. It is a very significant research topic to develop shield technology in our country in combination with the engineering practice. In this paper, based on the engineering background of shield tunneling between Ganoderma station and overturning station of Shenzhen Metro Line 5, aiming at earth-pressure balance shield tunneling passing through the building (construction) in close distance, the segment joint of shield tunnel is waterproof. Carrying out research on key technical problems such as transportation organization of shield construction and air pushing mine section of shield machine and its potential adverse effects, Combined with the actual situation of the project, the corresponding comprehensive construction countermeasures are put forward. (1) in view of the influence of shield tunnel construction on the adjacent building (pile group foundation), the tunnel excavation orientation is taken as the key influencing factor. Under the condition of different tunnel depth and horizontal distance between tunnel and pile foundation, the influence of shield construction on pile group foundation is studied by means of theoretical analysis and numerical simulation. And put forward the construction safety control countermeasures of shield tunneling through the building (construction) in close distance. (2) through the investigation and analysis of the existing shield tunnel engineering cases in China, from the segment joint construction form, The waterproofing parameters and materials of elastic rubber gasket, combined with the actual situation of Shenzhen Metro Line 5 tunnel project, The waterproofing measures for segment joint of shield tunnel are put forward. (3) the factors affecting the transportation efficiency of shield tunneling with earth pressure balance and the problems faced by shield construction transportation organization are analyzed, and the selection of main construction materials and the calculation of the amount of construction materials are carried out. The selection of transportation equipment and the transportation organization plan are determined. This paper puts forward the corresponding transportation optimization measures from the aspects of improving the transportation capacity of equipment and organizing the transportation scheme reasonably. (4) aiming at the difficulty of controlling the posture of shield machine which may appear in the construction of air pushing mine section of shield machine, the clamping of shield machine, the leakage of joint of pipe piece, etc. This paper puts forward the corresponding construction countermeasures, which can not only shorten the construction period, reduce the project cost, but also effectively reduce the construction risk. In this paper, based on the example of Shenzhen Metro Line 5 tunnel, aiming at the process of shield construction and the construction problems in special section, the comprehensive construction countermeasures of earth pressure balance shield tunneling are put forward, which not only perfect the safety control technology of shield construction, but also improve the safety control technology of shield construction. It reduces the adverse effect of improper handling of construction problems on the safety of tunnel structure during the service period, at the same time ensures the safety and smooth progress of the project, obtains good social and economic benefits, and has reference value and reference significance for similar projects in the future.
【學位授予單位】：石家莊鐵道大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U455.43
本文編號：2290398
[Abstract]:With the vigorous development of urban construction and the continuous development of underground space, through the examination of rich engineering practice, shield tunneling has become the construction of subway tunnel because of its advantages of strong geological adaptability, fast construction speed and little interference to the surrounding environment. The first choice of construction method for urban underground engineering such as cross-river highway tunnel and aqueduct tunnel. In order to meet the needs of the construction of special underground projects in prosperous areas of cities, a large number of new shield construction techniques emerged as the times require. As far as the application of shield technology in our country is concerned, the solution of various construction problems and the development of new technology will become an urgent matter. It is a very significant research topic to develop shield technology in our country in combination with the engineering practice. In this paper, based on the engineering background of shield tunneling between Ganoderma station and overturning station of Shenzhen Metro Line 5, aiming at earth-pressure balance shield tunneling passing through the building (construction) in close distance, the segment joint of shield tunnel is waterproof. Carrying out research on key technical problems such as transportation organization of shield construction and air pushing mine section of shield machine and its potential adverse effects, Combined with the actual situation of the project, the corresponding comprehensive construction countermeasures are put forward. (1) in view of the influence of shield tunnel construction on the adjacent building (pile group foundation), the tunnel excavation orientation is taken as the key influencing factor. Under the condition of different tunnel depth and horizontal distance between tunnel and pile foundation, the influence of shield construction on pile group foundation is studied by means of theoretical analysis and numerical simulation. And put forward the construction safety control countermeasures of shield tunneling through the building (construction) in close distance. (2) through the investigation and analysis of the existing shield tunnel engineering cases in China, from the segment joint construction form, The waterproofing parameters and materials of elastic rubber gasket, combined with the actual situation of Shenzhen Metro Line 5 tunnel project, The waterproofing measures for segment joint of shield tunnel are put forward. (3) the factors affecting the transportation efficiency of shield tunneling with earth pressure balance and the problems faced by shield construction transportation organization are analyzed, and the selection of main construction materials and the calculation of the amount of construction materials are carried out. The selection of transportation equipment and the transportation organization plan are determined. This paper puts forward the corresponding transportation optimization measures from the aspects of improving the transportation capacity of equipment and organizing the transportation scheme reasonably. (4) aiming at the difficulty of controlling the posture of shield machine which may appear in the construction of air pushing mine section of shield machine, the clamping of shield machine, the leakage of joint of pipe piece, etc. This paper puts forward the corresponding construction countermeasures, which can not only shorten the construction period, reduce the project cost, but also effectively reduce the construction risk. In this paper, based on the example of Shenzhen Metro Line 5 tunnel, aiming at the process of shield construction and the construction problems in special section, the comprehensive construction countermeasures of earth pressure balance shield tunneling are put forward, which not only perfect the safety control technology of shield construction, but also improve the safety control technology of shield construction. It reduces the adverse effect of improper handling of construction problems on the safety of tunnel structure during the service period, at the same time ensures the safety and smooth progress of the project, obtains good social and economic benefits, and has reference value and reference significance for similar projects in the future.
【學位授予單位】：石家莊鐵道大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U455.43
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