【摘要】：盾構(gòu)法施工在城市地鐵隧道建設(shè)中已經(jīng)非常普遍,控制盾構(gòu)掘進(jìn)引起的地表以及建筑物沉降是地鐵建設(shè)的重要任務(wù)。相關(guān)沉降可分為施工期間沉降以及后續(xù)沉降兩部分,如何預(yù)測(cè)和控制施工期間沉降和后續(xù)沉降,是地鐵盾構(gòu)隧道施工的一個(gè)重要課題。本文主要針對(duì)軟弱地層的特性,結(jié)合蘇州軌道交通2號(hào)線盾構(gòu)隧道工程實(shí)例,通過理論預(yù)測(cè)及方案優(yōu)化、實(shí)測(cè)分析總結(jié)規(guī)律,對(duì)盾構(gòu)隧道施工引起的地表及建筑物后續(xù)沉降規(guī)律進(jìn)行了比較深入的研究,主要做了以下工作： (1)從國(guó)內(nèi)外對(duì)盾構(gòu)掘進(jìn)引起沉降的研究結(jié)果出發(fā),分別對(duì)盾構(gòu)掘進(jìn)引起地表和鄰近建筑物沉降進(jìn)行了研究。研究沉降采用了按時(shí)間分段研究的方法,將后續(xù)沉降分為施工期間沉降和后續(xù)沉降,分別對(duì)兩類沉降做了相關(guān)綜述。 (2)研究了盾構(gòu)掘進(jìn)期間地表和建筑物的沉降規(guī)律。從地層損失理論以及孔隙水壓力理論闡述了盾構(gòu)掘進(jìn)引起地表沉降的機(jī)理,探索了影響地表沉降的因素和規(guī)律；同時(shí)研究了盾構(gòu)掘進(jìn)對(duì)鄰近建筑物的影響機(jī)理,引起沉降的因素,和建筑物受到損害的具體方式。 (3)進(jìn)行了后續(xù)沉降的理論研究,分析盾構(gòu)掘進(jìn)引起后續(xù)沉降的主要因素,對(duì)比了后續(xù)沉降的理論計(jì)算方法,結(jié)合蘇州軌道交通2號(hào)線工程實(shí)例對(duì)后續(xù)沉降計(jì)算方法進(jìn)行優(yōu)化,得出適合蘇州地區(qū)后續(xù)沉降的方案。 (4)本文對(duì)大量的工程實(shí)測(cè)數(shù)據(jù)進(jìn)行分析,總結(jié)出地表和建筑物后續(xù)沉降的規(guī)律。
[Abstract]:Shield method has been widely used in urban subway tunnel construction. Controlling the ground surface and building settlement caused by shield tunneling is an important task in subway construction. The relative settlement can be divided into two parts: settlement during construction and subsequent settlement. How to predict and control the settlement and subsequent settlement during construction is an important subject in the construction of metro shield tunnel. This paper mainly aims at the characteristics of soft stratum, combined with the practical example of shield tunneling of Suzhou Rail Transit Line 2, through theoretical prediction and scheme optimization, the law of actual measurement is analyzed and summarized. In this paper, the following works are done: (1) based on the results of the research on the settlement caused by shield tunneling at home and abroad, the following works are done: (1) based on the results of the research on the settlement caused by shield tunneling at home and abroad, the following works have been done: (1) The settlement of surface and adjacent buildings caused by shield tunneling is studied respectively. In this paper, the method of time division is used to study the settlement. The subsequent settlement is divided into the settlement during the construction period and the subsequent settlement, and the two types of settlement are summarized respectively. (2) the settlement law of ground surface and buildings during shield tunneling is studied. Based on the theory of formation loss and pore water pressure, the mechanism of ground subsidence caused by shield tunneling is expounded, and the factors and rules affecting surface subsidence are explored. At the same time, the influence mechanism of shield tunneling on adjacent buildings, the factors causing settlement, and the concrete ways of building damage are studied. (3) the theoretical study of subsequent settlement is carried out, and the main factors of subsequent settlement caused by shield tunneling are analyzed, and the theoretical calculation methods of subsequent settlement are compared. Based on the practical example of Suzhou Rail Transit Line 2, the method of subsequent settlement calculation is optimized, and the scheme suitable for the subsequent settlement in Suzhou area is obtained. (4) in this paper, a large number of engineering measured data are analyzed, and the law of the subsequent settlement of the surface and buildings is summarized.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U455.43;U231.3

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