Research on application of TRD construction method in foundation pit support in flood-flat area of Yangtze River

At present, the construction of deep foundation pits in the flood-flat area of the Yangtze River has some problems, such as large ground settlement, large force and deformation after construction, which seriously affects the overall quality of construction projects. In order to promote the sustainable development of building construction, TRD construction method is introduced to study the construction technology design of deep foundation pit in overshoal area. Taking No. 202 Zhongshan North Road underground garage project as an example, TRD construction method and bored pile were used to calculate and analyze their mechanical characteristics. ABAQUS software is used to simulate the excavation of the foundation pit, and the stress and displacement characteristics of the soil, wall and steel support are studied.