Study on the Influence of Deep Foundation Pit Construction on Shallow Foundation Building Deformation in Soft Soil Area
In order to explore the influence of deep foundation pit construction on the deformation of shallow foundation houses,this paper takes foundation pit engineering in soft soil area as an example,analyzes the deformation and mechanical response of its own supporting structure and the time-history evolution of settlement of adjacent shallow foundation houses during foundation pit construction,and reveals the settlement de-formation mechanism.Through practice,it is found that the structural deformation and mechanical response of foundation pit itself increase first and then tend to be stable,and both are within the range of over-design warning value.After the completion of foundation pit construction,the deformation of adjacent houses is still continuous and higher than that in the construction process.In the end,the average settlement amount of neighboring houses was 276 mm,and the average cumulative variation amount of building incline was 5.5‰,which exceeded the allowable value in the code.Therefore,it was necessary to strengthen the adjacent buildings and the surrounding topsoil layer in time.
Soft soil areaFoundation pit engineeringMonitoring technologyBuilding settlementDeformation control
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