深圳市某大型地铁车站盖挖逆作法设计探讨

深圳市某大型地铁车站盖挖逆作法设计探讨 English Version

(1.广州市市政工程设计研究院，广东广州 510060；2. 广东省水利水电科学研究院，广东广州 510610；3. 广东省岩土工程技术研究中心，广东广州 510641；4. 华南理工大学，广东广州 510640)

详细信息

(1. Guangzhou Municipal Engineering Design & Research Institute, Guangzhou 510060, China; 2. Guangdong Research Institute of Water Resources and Hydropower, Guangzhou 510610, China;3. The Geotechnical Engineering Technology Center of Guangdong Province, Guangzhou 510641, China; 4. South China University of Technology, Guangzhou 510640, China)

摘要: 对一个采用盖挖逆作法的地铁车站进行了施工全过程的模拟计算，较好地反映了使用阶段的结构受力对施工阶段受力的继承关系，从而得到较为准确的内力和变形，并对侧向土压力的选取及不对称结构支撑刚度的修正提出建议，同时计算也表明，采取墙背土压力随开挖过程而变化的方法更合理，对类似设计具有一定参考价值。
- 盖挖逆作法 /
- 计算 /
- 土压力 /
- 不对称结构
Abstract: The whole construction process of a metro station is simulated by using the covered top-down construction method. The calculated results better reflect the inheritance relationship of the structural response between the construction stage and the servile stage, resulting in more accurate internal force and deformation. Besides, some new methods are also proposed to choose the lateral earth pressure and to modify the brace stiffness of the asymmetric structure. It is more reasonable to make the lateral earth pressure vary with the excavation process. It may provide reference for the design of the similar projects.
- covered top-down construction method /
- calculation /
- earth pressure /
- asymmetric structure

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