Prefabricated support structure for use at tunnel deformation joint

Abstract

The present utility model discloses a prefabricated support structure for use at tunnel expansion joint, which relates to the technical field of expansion joints. The prefabricated support structure for use on a tunnel expansion joint comprises a telescopic box structure arranged in a pre-reserved groove of the tunnel expansion joint, wherein the telescopic box structure can be extended and retracted in the transverse telescopic direction of the tunnel expansion joint. The expansion joint structure is arranged on the telescopic box structure and is supported by the telescopic box structure. The telescopic box structure comprises a first box (1) and a second box (2), with the telescopic structure arranged between the first (1) and the second box (2) to maintain a constant relative vertical height between the first (1) and the second box (2). In the prefabricated support structure of the present utility model, the telescopic box structure supports the expansion joint structure, maintaining horizontal support for the expansion joint structure and ensuring stability of horizontal telescopic displacements under transverse deformation. Prefabrication of the support structure guarantees the efficiency of work on the construction site at the tunnel expansion joint.