本文選題：盾構隧道 + 臨近建筑�。� 參考：《天津大學》2014年碩士論文

【摘要】：中國是人口眾多的大國，隨著城市化率的日益提高，城市環(huán)境面臨著很大的挑戰(zhàn)，因此對于地下空間的需求量和開發(fā)量也日益增大。地鐵作為一種高效的交通工具在我國眾多城市大量興建，盾構隧道施工難免對臨近土體和建筑物造成影響，，已有的工程事故也說明了對盾構隧道施工進行研究的必要性。因此盾構隧道對臨近土體和建筑的研究也越來越多。 對于盾構隧道施工對土體和臨近建筑的研究主要有三種：理論分析法、數(shù)值分析法以及現(xiàn)場實測分析法，其中數(shù)值分析法隨著計算機技術的發(fā)展和普及，被大量應用于隧道及地下工程的研究，用來分析和預測隧道掘進對周圍土體和建筑物的影響。 本文以天津地鐵區(qū)間隧道掘進對土體、臨近淺基礎建筑、臨近橋梁樁基礎三個工程案例為依托，利用有限元分析軟件ABAQUS建立精細化的三維模型，分析盾構掘進對周圍環(huán)境的影響，有限元與實測的對比分析證明了本文所用的方法的合理性。結合工程實測總結盾構穿越造成的地表土體沉降、土體分層沉降、土體水平位移、建筑物沉降及傾斜等規(guī)律。 在此基礎上，利用已有的工程地質參數(shù)和盾構施工參數(shù)，對于在一定掌子面壓力，不同盾殼摩擦情況下盾構隧道掘進對周圍土體豎向位移、水平位移、附加應力的影響，并分析了盾構隧道側穿摩擦樁情況下，樁身內力、變形、樁頂沉降及樁身側摩阻力的變化。結果表明，盾殼摩擦是造成地表沉降和隆起、土體沿隧道掘進方向水平位移的主要原因，并且隨著盾殼摩擦的增大，土體變形增大。同時盾殼摩擦的增大會造成臨近樁基礎樁頂沉降、側移和樁身彎矩增大，施工過程中應采取措施減小盾殼側壁摩擦。
[Abstract]:China is a large country with a large population, with the increasing rate of urbanization, the urban environment is facing a great challenge, so the demand for underground space and the amount of development are also increasing day by day. As a kind of efficient means of transportation, subway is widely built in many cities of our country. The construction of shield tunnel will inevitably affect the adjacent soil and buildings. The existing engineering accidents also show the necessity of research on shield tunnel construction. Therefore, there are more and more researches on adjacent soil and buildings in shield tunnel. There are three kinds of research on soil mass and adjacent buildings in shield tunnel construction: theoretical analysis, numerical analysis and field measurement analysis, among which numerical analysis has been developed and popularized with the development of computer technology. It is widely used in tunnel and underground engineering to analyze and predict the influence of tunneling on surrounding soil and buildings. In this paper, based on three engineering cases of Tianjin subway tunnel tunneling on soil, near shallow foundation building and near bridge pile foundation, a fine three-dimensional model is established by using finite element analysis software ABAQUS. The influence of shield tunneling on the surrounding environment is analyzed. The comparison between finite element method and actual measurement proves the rationality of the method used in this paper. Combined with the engineering measurement, the rules of ground soil settlement, soil layered settlement, horizontal displacement of soil, building settlement and inclination caused by shield tunneling are summarized. On this basis, using the existing engineering geological parameters and shield construction parameters, the influence of shield tunneling on the vertical displacement, horizontal displacement and additional stress of surrounding soil under certain face pressure and different shield shell friction is studied. The variation of the internal force, deformation, settlement of the pile top and friction resistance of the side of the shield tunnel under the condition of friction pile on the side of the shield tunnel are analyzed. The results show that the friction of shield shell is the main cause of ground subsidence and uplift, and the horizontal displacement of soil along the direction of tunneling, and the deformation of soil increases with the increase of shield shell friction. At the same time, the increase of shield shell friction will result in settlement of pile top near pile foundation, lateral displacement and increase of pile bending moment. Measures should be taken to reduce side wall friction of shield shell during construction.
【學位授予單位】：天津大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：U455.43

【參考文獻】

相關期刊論文 前10條

1 劉波;陶龍光;李希平;唐孟雄;;地鐵盾構隧道下穿建筑基礎誘發(fā)地層變形研究[J];地下空間與工程學報;2006年04期

2 李永靖;張向東;;城市地鐵開挖對地表建筑物影響研究(英文)[J];地下空間與工程學報;2006年S2期

3 白廷輝,尤旭東,李文勇;盾構超近距離穿越地鐵運營隧道的保護技術[J];地下工程與隧道;2000年03期

4 王春凱;許愷;周冠南;侯剛;;盾構隧道穿越條基框架結構影響研究[J];城市軌道交通研究;2009年09期

5 姜忻良,趙志民;鏡像法在隧道施工土體位移計算中的應用[J];哈爾濱工業(yè)大學學報;2005年06期

6 吳小羊;;砂性土層中盾構穿越既有建筑的進洞施工技術[J];建筑施工;2012年04期

7 張志強,何川;地鐵盾構隧道近接樁基的施工力學行為研究[J];鐵道學報;2003年01期

8 姜忻良;趙志民;李園;;天津地鐵盾構施工對鄰近工程設施影響的動態(tài)模擬[J];天津大學學報;2006年02期

9 孫謀;劉維寧;;軟土地層盾構近距穿越老式建筑區(qū)掘進參數(shù)分析[J];土木工程學報;2009年12期

10 謝東武;丁文其;李斌;;盾構穿越砌體建筑的模擬預測與監(jiān)控量測[J];土木工程學報;2011年S2期

相關博士學位論文 前3條

1 李志偉;軟土地區(qū)深基坑開挖對鄰近建筑物影響的三維有限元分析[D];天津大學;2011年

2 馬可栓;盾構施工引起地基移動與近鄰建筑保護研究[D];華中科技大學;2008年

3 余佳力;城市隧道建設對地表建筑物的影響研究[D];武漢大學;2012年

本文編號：1847418