In this paper

a new type of support form-shear bond supporting system

which is composed of vertical and oblique piles

is put forward for deep and large foundation pit construction. Through model test

the horizontal displacement of pile top and internal force of pile body are measured at different excavation depths for shear bond group and single row cantilever pile group

respectively. Finite element numerical simulation is carried out at the same time. The results show that the maximum horizontal displacement of the pile top in shear bond group is about 1/10 of that in cantilever group

and the maximum bending moment of the pile in shear bond group is about half of that in cantilever group. Shear bond supporting system has greater stiffness

and it can effectively reduce the displacement of pile top and the maximum bending moment of pile body. It consumes less material

is able to support deeper excavation

and occupies less space

which will not hinder the construction of the main basement. Therefore

it can save time and cost

and provide a new idea for deep foundation pit supporting.