The supporting mode of foundation pit in soft stratum should be determined according to the excavation depth and surrounding environment. In the case of complex environment, it is not appropriate to adopt the way of slope excavation, and it is necessary to set up soil retaining structure and water stop curtain. The common support method is mainly pile row support + inner support.
In a soft formationThe foundation pitThe way of enclosure and support should be determined according to the depth of excavation and the environment around the foundation pit. In the case of complex environment, it is not appropriate to adopt the way of slope excavation, and it is necessary to set up soil retaining structure and water stop curtain, and the main common is pile drainage support +Internal support support.
forThe foundation pitIn order to reduce the supporting cost, the center island method can be used to excavate the foundation pit with a large area: first, the underground structure in the middle of the foundation pit is built, and then the support is set on the floor panel of the underground structure, which can greatly reduce the amount of support.
In addition, for the surrounding environment complexThe foundation pitWhen the excavation depth of the foundation pit is deep, the reverse method can be adopted: the floor slab of the underground structure is used as the supporting structure.
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