城市地铁复杂环境下盾构施工质量控制研究
发布时间：2018-12-12 04:55
【摘要】：随着我国经济实力的不断提高,为了缓解日益增长的交通压力,地铁的施工在诸多城市建设发展中扮演着重要角色。由于地铁线路的规划施工滞后于城市的发展速度,因此造成现阶段的地铁施工中经常出现新建地铁线路为不得不穿越既有市政桥梁、管线的现象,同时为避让某些特大风险源而出现隧道小净间距或小半径施工的状况。对于既有市政桥梁、市政管线、城市建(构)筑物,在规划阶段进行地铁线路选线时应尽量绕避,以保证既有和新建结构的安全,避免出现小半径、小间距及穿越地面构筑物等复杂条件下的盾构施工。但是在条件苛刻,空间局促的情况下,新建地铁线路在复杂条件下施工在所难免,为保证新建地铁结构施工安全,我们将地铁施工中经常遇到的穿越地面构筑物、小净间距、小转弯半径及富水砂层的盾构接收作为质量控制关键技术进行研究,以指导今后类似工程的应用。本文以郑州地铁1号线工程为依托背景,针对盾构施工过程中需要通过的1级风险源,下穿管线群及因建筑物影响而出现的小净距施工,通过理论计算提出解决思路,通过技术措施控制施工质量,通过监测数据反应质量控制情况。合理的质量控制措施为郑州地铁今后遇到类似工程起到指导意义。
[Abstract]:With the continuous improvement of our country's economic strength, subway construction plays an important role in the development of many cities in order to alleviate the increasing traffic pressure. As the planning and construction of subway lines lag behind the speed of urban development, the phenomenon that new subway lines have to cross existing municipal bridges and pipelines often appears in the subway construction at the present stage. At the same time, in order to avoid some extraordinarily large risk sources, the tunnel with small net spacing or small radius construction occurs. For the existing municipal bridges, municipal pipelines, urban construction (construction) buildings, in the planning stage of subway line selection should be as far as possible around, in order to ensure the safety of existing and new structures, to avoid the occurrence of small radius, Shield construction under complex conditions such as small spacing and crossing ground structures. However, in the case of harsh conditions and limited space, it is inevitable that new subway lines will be constructed under complex conditions. In order to ensure the safety of the construction of new subway structures, we will often meet the subways through the ground structures, with small net spacing, in order to ensure the safety of the construction of the new subway structures. The small turning radius and shield receiving of water-rich sand layer are studied as the key technology of quality control to guide the application of similar projects in the future. In this paper, based on Zhengzhou Metro Line 1 project, the author puts forward the solution through theoretical calculation in view of the first grade risk source, the lower pipeline group and the small net distance construction caused by the influence of the building, which need to be passed in the course of shield tunneling construction. The construction quality is controlled through technical measures, and the quality control of data response is monitored. Reasonable quality control measures will guide Zhengzhou Metro to meet similar projects in the future.
【学位授予单位】：石家庄铁道大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U455.43;U231.3
本文编号：2373951
[Abstract]:With the continuous improvement of our country's economic strength, subway construction plays an important role in the development of many cities in order to alleviate the increasing traffic pressure. As the planning and construction of subway lines lag behind the speed of urban development, the phenomenon that new subway lines have to cross existing municipal bridges and pipelines often appears in the subway construction at the present stage. At the same time, in order to avoid some extraordinarily large risk sources, the tunnel with small net spacing or small radius construction occurs. For the existing municipal bridges, municipal pipelines, urban construction (construction) buildings, in the planning stage of subway line selection should be as far as possible around, in order to ensure the safety of existing and new structures, to avoid the occurrence of small radius, Shield construction under complex conditions such as small spacing and crossing ground structures. However, in the case of harsh conditions and limited space, it is inevitable that new subway lines will be constructed under complex conditions. In order to ensure the safety of the construction of new subway structures, we will often meet the subways through the ground structures, with small net spacing, in order to ensure the safety of the construction of the new subway structures. The small turning radius and shield receiving of water-rich sand layer are studied as the key technology of quality control to guide the application of similar projects in the future. In this paper, based on Zhengzhou Metro Line 1 project, the author puts forward the solution through theoretical calculation in view of the first grade risk source, the lower pipeline group and the small net distance construction caused by the influence of the building, which need to be passed in the course of shield tunneling construction. The construction quality is controlled through technical measures, and the quality control of data response is monitored. Reasonable quality control measures will guide Zhengzhou Metro to meet similar projects in the future.
【学位授予单位】：石家庄铁道大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U455.43;U231.3
【引证文献】
相关期刊论文 前1条
1 王海英;;地铁盾构施工控制技术探析[J];建筑技术开发;2017年09期
，本文编号：2373951
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