Study on the Effect of Long Strip Foundation Pit Engineering for Neighboring Buildings under Complex Environmental Conditions
To excavate the deep foundation pit in buildings dense area,it will disturb the surrounding soil,cause buildings deformation.This paper takes a long strip foundation pit engineering project in Nanjing as an example.Based on the complex geological conditions and surrounding environmental characteristics,it optimizes engineering design and construction measures to protect the deformation of surrounding buildings.Informatization dynamic monitoring tracks the buildings'deformation of different foundations.A comprehensive comparative analysis of monitoring data from the deep foundation pit and surrounding buildings shows that the design and construction measures effectively controlled the deformation of the deep foundation pit.The monitoring data of the foundation pit are all within the monitoring control limits,while the deformation of different building foundations varies greatly.To address buildings deformation laws of buildings with different basic forms,it is proposed to set up isolation piles to reduce the impact of the construction of the enclosure structure on the surrounding buildings with whole floor foundations and natural foundations.
deep foundation pitssurrounding buildingdifferent foundationdeformation effect