Joint torsion resistance model testing device for cemented prestressed assembled pipe gallery

The invention provides a joint torsion resistance model testing device for a cemented prestressed assembled pipe gallery.The bottom end of a cemented prestressed assembled pipe gallery model test piece is fixed on a counter-force pedestal through a fixing device, and then the top end of the cemented prestressed assembled pipe gallery model test piece is stably loaded through a loading device; under the stability of a torsion balance device, the cemented prestressed assembled pipe gallery model test piece undergoes relative torsion until the test piece is damaged, a relation curve between the relative rotation angle and displacement of each pipe joint and the magnitude of load is obtained through an angle measurement result, and the strain of the surface of the model test piece and prestressed tendons is measured through strain gauges; and therefore, the torsion condition, the deformation characteristic and the damage mode of the joint of the cemented prestressed assembled pipe gallery can be clarified. 本发明提供了