Analysis of Vertical Underpinning Design in New Underground Space Under Existing Urban Buildings
In order to ensure the safety of the superstructure during the underground space development of existing buildings,this paper takes a 4-story brick-wood structure building in Guizhou as an example to study the vertical support design of the foundation of the superstructure of the existing building,and simulates the influence of the construction of the new underground space of the existing building on the mechanical response of the superstructure through YJK 3D structural simulation software.By comparing and analyzing the stress and deformation character-istics of the superstructure under three working conditions,the deformation of the superstructure under all working conditions is within the de-sign allowable value,which indicates that the vertical underpinning technology scheme adopted in this project has good construction effect.
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