Taking the single-level

single-span steel frame jointing with cantilever section as the research object

this paper describes the physical simulation experiment of the deformation due to surface mining and studies the additional stress and deformation of the steel frame splice joints under the action of the horizontal deformation on the ground.The main research result is the curve of internal force and the deformation of splice plate on web and upper and lower flanges

which belong to the splice joint under the horizontal stretching and the horizontal compression.We analyze the reason of the variation of deformation value located in the middle of the upper and lower flanges and web with the load increasing on the test.The results show that the surface horizontal stretch is the most unfavorable action;although the jointing nodes will produce deformations

they are still in the elastic deformation stage to a large extent

and will recover after unloading

so the splice joints show good anti-deformation performance.Finally

we suggest that steel frame with the beam section

which is connected by splicing joints with high-strength bolts can well absorb deformation energy

when new or reinforced steel building structures are located in the ground deformation areas.