Construction method of preformed holes for foundation bolts of bridge support

The present invention discloses a method for construction of bridge bearing bolt aside hole, comprising the steps of :( a) determine a good holes for pouring cap to be located in the position of the beam or pier, leaving aside hole gap; (ii ) to determine the relative or pier cap beams reinforced upper bearing bolt holes for the location of the center; (iii) the production of steel sleeve; (iv) production of fixed skeleton; (v) to be mounted on the fixed frame beams pouring cap or above the pier reinforcement layer; (f) fixed steel sleeve insert skeleton ring; and (vii) pouring concrete after the final setting drawn steel sleeve, remove or retain the fixed skeleton; (viii) by a pre support cushion stone left longitudinal bars, banding support cushion stone steel mesh, the secondary insert steel sleeve, pouring concrete support pad stone; less ① step of the present invention, the operation is simple; ② steel sleeve can be reused; ③ support seat bolt holes for mounting position accuracy deviation is small; ④ The steel sleeve is withdrawn hole surface roughness, good adhesion, post-grouting dense high.