Abstract:With the urban development, it is necessary to reconstruct some ground roads into underground roads, while the numerous existing buildings (structures) around severely restrict the construction of underground roads. During the construction of new underground roads, it is necessary to ensure the safety of the foundation pit itself and the normal use of the surrounding existing buildings (structures). For the foundation pit of underground roads in the project located in the complex environmental conditions such as the adjacent retaining wall, underground garage and basement, the supporting measures of “cast-in-place pile + internal bracing”, “double-row pile”, “soil nailing wall” and “sloping + net spraying” are taken in sections. And the calculated values and monitoring values of foundation pit are compared and analyzed. By arranging the construction of the project in the dry season, the adverse impact of the Yangtze River flood on the project can be avoided, which has a certain reference significance for the design and construction of foundation pits in complex environments.
