Suspension bridge prestressed steel strand rock hole anchorage and construction method

The invention provides a suspension bridge prestressed steel strand rock hole anchorage construction method which comprises the following steps: firstly, constructing an inclined shaft and an adit, and simultaneously excavating a front anchor surface and a splay cable saddle buttress foundation pit; then a rear anchor chamber is constructed, the inclined shaft, the adit and the rear anchor chamber are supported, and the rear anchor chamber is communicated to the ground through the inclined shaft; a prestressed pipeline hole is obliquely drilled in the rock anchor body; penetrating prestressed tendon pipelines and prestressed steel strands, and pouring anchor backing plates on the front and rear anchor surfaces; erecting a bracket to construct a splay cable saddle buttress and a front anchor chamber concrete bottom plate; an anchoring system is constructed, and the prestressed steel strands are tensioned; a splay cable saddle is installed, and a main cable strand is erected and tensioned; and grouting is condu