本文關(guān)鍵詞：礦山法與盾構(gòu)組合施工地鐵隧道管片的受力及變形研究　出處：《武漢工程大學(xué)》2015年碩士論文　論文類(lèi)型：學(xué)位論文

  更多相關(guān)文章： 空推 管片 上浮 錯(cuò)臺(tái)

【摘要】：近年來(lái),我國(guó)經(jīng)濟(jì)與現(xiàn)代化建設(shè)快速發(fā)展,城市軌道交通的發(fā)展步伐也不斷加快,且城市軌道交通在很多城市的建設(shè)中被重視,并納入城市規(guī)劃和建設(shè)中。伴隨我國(guó)城市軌道交通隧道的工程建設(shè)步伐不斷加快,由于地鐵隧道的施工地質(zhì)條件也越來(lái)越復(fù)雜,所以施工中常常需要對(duì)兩種施工工法進(jìn)行組合使用,才能更好地解決施工中會(huì)遇到的各種困難,比如,可以額解決硬巖段的掘進(jìn)困難,同時(shí)在軟巖段施工的風(fēng)險(xiǎn)大大降低。盾構(gòu)機(jī)的拆卸、吊出以及再始發(fā)等工作不需要在硬巖段中設(shè)置,大大降低了施工場(chǎng)地的局限性,大大方便施工組織。但是兩種工法的結(jié)合也會(huì)隨之出現(xiàn)一些問(wèn)題,如管片縱向壓緊力不足,出現(xiàn)滲漏水,管片錯(cuò)臺(tái);管片會(huì)在回填后產(chǎn)生上浮,降低盾構(gòu)機(jī)姿態(tài)控制發(fā)生的性能等問(wèn)題。為解決盾構(gòu)通過(guò)礦山法施工帶來(lái)的問(wèn)題,本文以武漢地鐵三號(hào)線(xiàn)由王家灣到宗關(guān)的區(qū)間段為背景,通過(guò)ANSYS有限元的計(jì)算軟件,對(duì)管片在盾構(gòu)機(jī)空推礦山后形成的隧道進(jìn)行模擬分析,分析管片縱向應(yīng)力的變化規(guī)律以及管片豎向受力情況。并且結(jié)合理論計(jì)算,運(yùn)用數(shù)學(xué)與力學(xué)知識(shí)分析管片上浮及錯(cuò)臺(tái)規(guī)律。通過(guò)理論計(jì)算與有限元軟件的模擬分析,得到了管片在盾構(gòu)通過(guò)礦上法隧道中的縱向應(yīng)力與據(jù)盾尾距離的變化規(guī)律,同時(shí)得出管片豎向受力與上浮關(guān)系以及管片上浮與錯(cuò)臺(tái)據(jù)盾尾距離的關(guān)系。將理論計(jì)算結(jié)果與有限元軟件得到的結(jié)果比較,相互驗(yàn)證提高研究結(jié)果的可信度。本文得到的結(jié)論對(duì)盾構(gòu)通過(guò)礦上法隧道施工具有一定指導(dǎo)意義。
[Abstract]:In recent years, with the rapid development of economy and modernization in China, the development of urban rail transit has been accelerated, and urban rail transit has been attached importance to in the construction of many cities. And into urban planning and construction. With the rapid pace of construction of urban rail transit tunnels in China, the construction geological conditions of subway tunnels are becoming more and more complex. Therefore, it is often necessary to combine the two construction methods in order to better solve the difficulties encountered in construction, for example, can solve the hard rock excavation difficulties. At the same time, the risk of construction in soft rock segment is greatly reduced. The disassembly, lifting and re-starting of shield machine do not need to be set in the hard rock section, which greatly reduces the limitation of construction site. But the combination of the two methods will lead to some problems, such as insufficient longitudinal compression force, leakage water, staggered pipe; The segment will rise after backfilling and reduce the performance of shield machine attitude control. In order to solve the problems caused by shield tunneling through mine construction. Based on the section of Wuhan Metro Line 3 from Wangjiawan to Zongguan, this paper simulates and analyzes the tunnel formed after the shield machine pushes the mine through ANSYS finite element calculation software. The variation law of longitudinal stress of segment and the vertical force of segment are analyzed, and the theoretical calculation is carried out. Mathematical and mechanical knowledge is used to analyze the rule of segment floating and stagger. Theoretical calculation and finite element software simulation analysis are carried out. The variation law of longitudinal stress and shield tail distance in shield tunneling is obtained. At the same time, the relationship between vertical force and floating and the distance between segment floating and staggered shield tail are obtained. The theoretical results are compared with the results obtained by finite element software. Mutual verification improves the reliability of the research results. The conclusions obtained in this paper have a certain guiding significance for shield tunneling construction.
【學(xué)位授予單位】：武漢工程大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：U455.4;U231.3

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