软弱含水地层盾构掘进地表和建筑物沉降研究
发布时间：2019-01-10 09:38
【摘要】：盾构法施工在城市地铁隧道建设中已经非常普遍,控制盾构掘进引起的地表以及建筑物沉降是地铁建设的重要任务。相关沉降可分为施工期间沉降以及后续沉降两部分,如何预测和控制施工期间沉降和后续沉降,是地铁盾构隧道施工的一个重要课题。本文主要针对软弱地层的特性,结合苏州轨道交通2号线盾构隧道工程实例,通过理论预测及方案优化、实测分析总结规律,对盾构隧道施工引起的地表及建筑物后续沉降规律进行了比较深入的研究,主要做了以下工作： (1)从国内外对盾构掘进引起沉降的研究结果出发,分别对盾构掘进引起地表和邻近建筑物沉降进行了研究。研究沉降采用了按时间分段研究的方法,将后续沉降分为施工期间沉降和后续沉降,分别对两类沉降做了相关综述。 (2)研究了盾构掘进期间地表和建筑物的沉降规律。从地层损失理论以及孔隙水压力理论阐述了盾构掘进引起地表沉降的机理,探索了影响地表沉降的因素和规律；同时研究了盾构掘进对邻近建筑物的影响机理,引起沉降的因素,和建筑物受到损害的具体方式。 (3)进行了后续沉降的理论研究,分析盾构掘进引起后续沉降的主要因素,对比了后续沉降的理论计算方法,结合苏州轨道交通2号线工程实例对后续沉降计算方法进行优化,得出适合苏州地区后续沉降的方案。 (4)本文对大量的工程实测数据进行分析,总结出地表和建筑物后续沉降的规律。
[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.
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U455.43;U231.3
本文编号：2406181
[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.
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U455.43;U231.3
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