Abstract
With the rapid development of the domestic high-rise buildings, the scale and depth of deep excavation pit projects are also expanding. More and more deep foundation pit appear in built-up and densely populated areas, which imposes higher requirements on the excavation engineering design. BIM technology, as a new technology in the construction industry, has gradually been used in various fields. In this paper, taking the deep foundation pit project of Changsha Zhongqing Square for example, the BIM software REVIT was used to establish a 3D model of excavation pit supporting. The structural collision checking, simulation of construction process and deepening design of nodes were carried out to provide guidance to building construction. The problems and causes of applying BIM technology in the design of building foundation pits were analyzed and summarized. The expectations on the development of BIM technology in the field of building foundation pits were also made.