本文關鍵詞： 沉管隧道 貫通測量 沉放測量 最終接頭　出處：《西南交通大學》2017年碩士論文　論文類型：學位論文

【摘要】：我國沉管隧道技術研究起步較晚,雖然經(jīng)過最近幾十年的發(fā)展,已成功修建了 10余座沉管隧道,但總體而言,與世界發(fā)達國家相比,我國的沉管技術仍相對落后。在此期間,國內(nèi)一些高校和科研機構在沉管隧道測量領域已經(jīng)取得了一定的研究成果,成功指導并修建了一批沉管隧道,但這些沉管隧道大多規(guī)模較小,對貫通測量要求較低。目前,國內(nèi)針對大型沉管隧道貫通測量的研究微乎其微,但沉管隧道貫通測量工作是整個測控系統(tǒng)中的重要組成部分,也是關系到整個沉管隧道能否順利貫通的重要環(huán)節(jié)。一方面,貫通測量通過對已沉管節(jié)進行洞內(nèi)測量,可指導后續(xù)管節(jié)的沉放工作;另一方面,對于預制型最終接頭的沉管隧道,只有通過貫通測量,得到最終接頭模型,才能進行最終接頭的預制及安裝,保證整個沉管隧道工程順利貫通。本文將沉管隧道貫通測量分為洞內(nèi)導線測量和最終接頭測量兩個部分。對于洞內(nèi)導線測量部分:首先,提出了幾種大致可行的測量方案;然后,通過對測角測邊精度、導線邊長、導線網(wǎng)型和加測陀螺方位角等幾個因素進行分析研究,總結出各項因素對沉管隧道橫向貫通誤差的影響值;最后,綜合分析提出了對于不同長度的沉管隧道應選擇哪一種洞內(nèi)導線測量方案,即能使其橫向貫通誤差滿足設計要求。對于最終接頭測量部分:主要研究分析預制型最終接頭,首先提出了四種獲取最終接頭預制模型參數(shù)的測量方法,分別是洞內(nèi)導線法、測量塔法、三維激光掃描法和聲納法;然后對各方法的測量原理及過程進行闡述,并對其測量精度進行分析;最后總結出各方法的優(yōu)缺點及適用范圍,可為工程應用提供參考。本文首先介紹了沉管隧道的歷史及技術發(fā)展、國內(nèi)外針對沉管隧道沉放測量及貫通測量的研究現(xiàn)狀;接著,通過對實際工程的研究學習,總結了沉管隧道建設過程中所需的各項測量工作,并分別對各環(huán)節(jié)測量原理和方法進行闡述;然后,重點探討了貫通測量導線精度分析;最后編寫了滿足課題實驗所需的測量數(shù)據(jù)處理程序,并通過實例驗證其可行性。通過本文的研究,不僅能夠?qū)τ跍y量人員學習了解沉管隧道測量知識提供參考,而且,在沉管隧道工程測量中,也可為施工人員制定貫通測量技術方案提供參考,同時,該研究對于沉管隧道貫通測量的進一步研究具有一定的參考價值。
[Abstract]:Although more than 10 immersed tunnels have been successfully built in recent decades in China, the technical research of immersed tunnels is relatively late, but in general, compared with the developed countries in the world. During this period, some universities and scientific research institutions in China have made certain research achievements in the field of pipe sinking tunnel survey, and have successfully guided and built a number of immersed tube tunnels. However, most of these immersed tunnels are small in scale and low in the requirements of through-through measurement. At present, there is very little research on the through-through measurement of large immersed tunnels in China. However, the penetration measurement of immersed tunnel is an important part of the whole measurement and control system, and it is also an important part of whether the whole immersed tunnel can be smoothly through. On the one hand. Through the measurement of the submersible pipe knots in the hole, can guide the subsequent pipe joint sinking work; On the other hand, the final joint model can be used to preform and install the final joint only through the through measurement for the immersed tunnel of the prefabricated final joint. In this paper, the penetrating measurement of immersed tunnel is divided into two parts: the traverse measurement in the hole and the final joint measurement. The first part is the traverse survey in the tunnel. Several feasible measurement schemes are put forward. Then, through the analysis and study of several factors, such as angle measuring precision, traverse side length, traverse network type and gyroscope azimuth angle, the influence value of each factor on the transversal transfixion error of immersed tunnel is summarized. Finally, a comprehensive analysis is made on which traverse measurement scheme should be chosen for the tunnel with different length. That is to say, the transversal transversal error can meet the design requirements. For the final joint measurement part: the main research and analysis of the prefabricated final joint, first proposed four measurement methods to obtain the parameters of the final joint prefabricated model. Three dimensional laser scanning method and sonar method were used respectively. Then the measurement principle and process of each method are expounded, and its measuring accuracy is analyzed. Finally, the advantages and disadvantages of each method and the scope of application are summarized, which can provide a reference for engineering application. Firstly, the history and technical development of immersed tube tunnel are introduced in this paper. The present situation of research on sinking and pipe-sinking measurement of tunnel at home and abroad; Then, through the research and study of the actual project, the paper summarizes the measurement work needed in the construction of the immersed tunnel, and expounds the measuring principle and method of each link respectively. Then, the accuracy analysis of the traverse is discussed. Finally, the program of measuring data processing is written to meet the need of the subject experiment, and its feasibility is verified by an example. The research in this paper can not only provide reference for surveyors to learn and understand the surveying knowledge of immersed tunnel. In addition, in the engineering survey of immersed tunnel, it can also provide a reference for the constructors to formulate the technical scheme of through-through survey. At the same time, this study has certain reference value for further research on the penetrating measurement of immersed tunnel.
【學位授予單位】：西南交通大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：U459.5;U452.1

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