论文部分内容阅读
对于运营地铁上方开挖的基坑工程,对基坑的支护设计及施工是控制地铁变形的关键,以成都某一地铁上建工程为例,对地铁隧道采取了保护措施,地铁保护施工完后,基坑设计时采用了桩+锚索+支撑的形式进行开挖支护,施工中采取了控制降水水位,分层开挖,原有的地铁保护结构也发挥了减小位移、形成保护屏障的作用,位移变形在预计范围内。
For the excavation of the foundation pit project operating above the subway, the design and construction of the support for the foundation pit is the key to control the deformation of the subway. Taking a certain subway construction project in Chengdu as an example, protective measures have been taken for the subway tunnel. After the design of foundation pit excavation and support using the form of pile + anchor + support, the construction has taken to control the precipitation level, stratified excavation, the original subway protection structure also played to reduce the displacement, the formation of protection The role of the barrier, displacement deformation in the expected range.