Prestressed anchor rod support simulation method

The invention relates to a pre-stressed anchor support simulation method, which belongs to the field of roadway surrounding rock control, and comprises the following steps: simulating an anchor rod by using an anchor structure unit, and respectively generating a surrounding rock action section anchor rod, a tray action section anchor rod and a tray outer side section anchor rod; the surrounding rock action section anchor rod, the tray action section anchor rod and the tray outer side section anchor rod are sequentially connected; setting material parameters for all anchor structure units; material parameters of the anchor structure unit with the ID being 1 are set; generating a grid in the range of the anchor structure unit of which the ID is 2, and naming the grid as plate; generating an interface of which the ID is 10 on the inner side surface of the plate grid; setting an interface material parameter of which the ID is 10; setting a'plate 'grid constitutive model and material parameters; applying a pulling