Design and Research of Deep Foundation Pit Close to Ultra High Voltage Power Pipeline in Soft Soil Area

Taking a deep foundation pit project adjacent to the ultra-high voltage power pipeline in Shanghai as the research object, the retaining form of the foundation pit was introduced, and the corresponding protection measures were provided according to the pipeline protection requirements. Through the comparison and analysis of the theoretical calculation value and the actual monitoring value, it can be seen that: (1) the lateral deformation of the enclosure is in the shape of a "fish belly" parabola, and the deformation resistance of the diaphragm wall is better than that of the cast-in-place pile; (2) The surface settlement can reflect the vertical displacement of the pipeline. The construction conditions before foundation pit excavation will have a certain impact on the surrounding roads and pipelines; (3) The measured deformation is larger than the theoretical calculation because the theoretical calculation only considers the deformation of the retaining structure during excavation.