本文選題：城軌施工 + 盾構(gòu)機(jī)　； 參考：《華南理工大學(xué)》2014年碩士論文

【摘要】：經(jīng)濟(jì)的發(fā)展導(dǎo)致地下空間不斷被開(kāi)發(fā)。盾構(gòu)施工技術(shù)已越來(lái)越廣泛的被應(yīng)用于各個(gè)城市各類地層的地鐵、隧道、市政管道等工程領(lǐng)域。近30年來(lái)，盾構(gòu)技術(shù)有了飛速的發(fā)展，盾構(gòu)相關(guān)的一系列如壁后同步注漿、盾尾密封、盾構(gòu)始發(fā)及接收的技術(shù)難題得以解決，使得盾構(gòu)技術(shù)有了較快的發(fā)展。地鐵建設(shè)的城市交通極為復(fù)雜、工程用地受到諸多干涉，不易確保。盾構(gòu)要穿越各類地下結(jié)構(gòu)物，如此使得盾構(gòu)施工直徑及長(zhǎng)度越來(lái)越大。盾構(gòu)隧道直徑加大，面臨了盾構(gòu)機(jī)裝配運(yùn)輸?shù)碾y題。解決了裝配運(yùn)輸難題，又面臨了盾體分塊多，現(xiàn)場(chǎng)組裝的難度。由于現(xiàn)場(chǎng)施工環(huán)境差，對(duì)大盾構(gòu)的組裝也造成了一定的難度，需要耗費(fèi)大量的時(shí)間，且仍會(huì)出現(xiàn)諸多質(zhì)量問(wèn)題。盾構(gòu)隧道長(zhǎng)度越大，對(duì)盾構(gòu)機(jī)掘進(jìn)性能的要求越高。盾構(gòu)設(shè)備在施工時(shí)是無(wú)法退出的，施工的結(jié)構(gòu)也無(wú)法重復(fù)。而且管片外徑小于盾構(gòu)外徑，要拆除已拼裝的管片也是相當(dāng)危險(xiǎn)。所以，盾構(gòu)施工的前期工作非常的重要。做好了前期準(zhǔn)備工作，才能降低日后盾構(gòu)機(jī)在掘進(jìn)過(guò)程中的高危風(fēng)險(xiǎn)，確保設(shè)備的安全運(yùn)行，保證隧道結(jié)構(gòu)安全。 我們不斷創(chuàng)新盾構(gòu)施工技術(shù)，卻忽略了決定盾構(gòu)機(jī)性能的重要環(huán)節(jié)——盾構(gòu)機(jī)組裝施工技術(shù)。唯有以高標(biāo)準(zhǔn)控制盾構(gòu)機(jī)組裝質(zhì)量，才能降低大直徑盾構(gòu)機(jī)施工的風(fēng)險(xiǎn)，從而確保盾構(gòu)機(jī)性能，以便在長(zhǎng)距離掘進(jìn)過(guò)程中正常運(yùn)行。盾構(gòu)機(jī)組裝包括盾構(gòu)機(jī)運(yùn)輸、吊裝、定位、螺栓連接、焊接、調(diào)試等關(guān)鍵工序。盾構(gòu)機(jī)自重大，且分環(huán)、分塊多，這為現(xiàn)場(chǎng)定位組裝帶了極大的難度。同時(shí)各片體在吊裝、焊接過(guò)程中極易發(fā)生變形。在同類工程實(shí)際施工中，即便是耗費(fèi)大量的時(shí)間、人力、物力，都沒(méi)有達(dá)到滿意的效果。因此，，為保證盾構(gòu)機(jī)組裝質(zhì)量及使用性能，力爭(zhēng)在最短的時(shí)間內(nèi)創(chuàng)造最大的效益，本課題對(duì)盾構(gòu)機(jī)組裝技術(shù)進(jìn)行探討，研究出一套高效優(yōu)質(zhì)的大盾構(gòu)機(jī)組裝施工新技術(shù)。 本課題通過(guò)工程實(shí)例，以Φ8780mm盾構(gòu)機(jī)為研究對(duì)象，將盾構(gòu)機(jī)組裝的各個(gè)環(huán)節(jié)進(jìn)行分解，從施工實(shí)操、質(zhì)量安全、進(jìn)度保證、成本控制四個(gè)方面對(duì)組裝技術(shù)進(jìn)行研究，理論結(jié)合實(shí)際，總結(jié)出一套先進(jìn)、可操作性強(qiáng)、指導(dǎo)意義大的技術(shù)成果。
[Abstract]:The development of economy leads to the development of underground space. Shield construction technology has been widely used in subway, tunnel, municipal pipeline and other engineering fields. In the past 30 years, the shield technology has been developed rapidly, and a series of technical problems related to shield tunneling, such as simultaneous grouting behind the wall, shield tail seal, starting and receiving of shield, have been solved, which makes the shield technology develop rapidly. Subway construction of urban traffic is extremely complex, engineering land by many interference, not easy to ensure. Shield tunneling is going through all kinds of underground structures, which makes the diameter and length of shield construction larger and larger. The diameter of shield tunnel is enlarged, and it is faced with the difficult problem of assembly and transportation of shield machine. The problem of assembly and transportation is solved, and it is difficult to assemble the shield. Because of the poor construction environment on site, it is difficult to assemble large shield machine, and it needs a lot of time, and there will still be many quality problems. The larger the length of shield tunnel, the higher the requirement of tunneling performance of shield machine. Shield equipment in construction can not be withdrawn, the construction of the structure can not be repeated. And the outer diameter of the segment is smaller than the outer diameter of shield, it is dangerous to remove the assembled segment. Therefore, the shield construction of the early work is very important. In order to reduce the high risk in the tunneling process of shield machine in the future and ensure the safe operation of the equipment and the safety of tunnel structure, the preparatory work can be done well. We constantly innovate the shield construction technology, but neglect the important link that determines the performance of shield machine-the assembly construction technology of shield machine. Only by controlling the assembly quality of shield machine with high standard can the risk of construction of large diameter shield machine be reduced and the performance of shield machine be ensured so that it can run normally during long distance tunneling. Shield machine assembly includes shield machine transportation, hoisting, positioning, bolt connection, welding, debugging and other key processes. The shield machine is self-important, and divided into rings and blocks, which makes it extremely difficult to locate and assemble in situ. At the same time, the pieces are easily deformed during the welding process. In the practical construction of similar projects, even if it takes a lot of time, manpower and material resources, it does not achieve satisfactory results. Therefore, in order to ensure the assembly quality and performance of shield machine, and to create the greatest benefit in the shortest time, this paper discusses the assembly technology of shield machine, and studies a set of new construction technology of large shield machine assembly with high efficiency and high quality. This subject takes 桅 8780mm shield machine as the research object through the engineering example, decomposes each link of the shield machine assembly, carries on the research to the assembly technology from four aspects of construction practice, quality safety, progress guarantee, cost control, etc. Combining theory with practice, a set of advanced, operable and instructive technical achievements are summarized.
【學(xué)位授予單位】：華南理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U455.39

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