铁路地下车站大型深基坑支护设计与变形控制研究的中期报告.docx

铁路地下车站大型深基坑支护设计与变形控制研究的中期报告 摘要： 随着城市化进程的加速，城市地铁建设水平不断提高。然而，由于地下车站建设深基坑施工存在许多不确定因素，如复杂的地质条件、地下水的影响等，使得深基坑施工和地下车站建设过程出现了许多问题。因此，对于铁路地下车站大型深基坑支护设计与变形控制进行研究意义深远。本文对于该研究进行中期报告。 本文针对铁路地下车站大型深基坑施工过程，采用了大量的现场观测方法和数值模拟方法。在现场观测方面，采用了位移、变形、应力等多种测试手段，对基坑施工过程中的变形情况、土体应力变化情况进行了详细记录与分析。在数值模拟方面，采用了有限元软件对于基坑受力行为进行了模拟与分析。 研究结果表明：对于铁路地下车站大型深基坑支护设计与变形控制，应该充分考虑地质条件和地下水的影响，采用合理的支护结构和加固措施，控制基坑变形，并对于施工过程中的变形情况进行实时监测和调整。同时，数值模拟分析为支护设计提供了重要的参考依据。 关键词：铁路地下车站；大型深基坑；支护设计；变形控制；数值模拟。 Abstract: With the acceleration of urbanization, the construction level of urban subway has been continually improved. However, due to many uncertain factors in deep foundation pit construction of underground station, such as complex geological conditions and the influence of underground water, there have been many problems in the process of deep foundation pit construction and underground station construction. Therefore, the research on the design of large-scale deep foundation pit support and deformation control of railway underground station is of great significance. This paper reports on the mid-term research on this topic. In this research, many on-site observation methods and numerical simulation methods were used to investigate the construction process of large-scale deep foundation pit in railway underground station. In terms of on-site observations, displacement, deformation, stress and other testing methods were used to record and analyze the deformation and stress changes of soil during the construction process. In terms of numerical simulation, finite element software was used to simulate and analyze the stress behavior of foundation pit. The research results show that for the design of large-scale deep foundation pit support and deformation control of railway underground station, geological conditions and the influence of underground water should be fully considered. Rational support structures and reinforcement measures should be adopted to control the deformation of foundation pit, and the deformation