The invention discloses a
processing method of highway reconstruction and extension project joint part. The
processing method is characterized in that the
slope angle of an original roadbed is utilized to build a slope step by step, the slope is set to be a slope which downwardly inclines from the edge of the original roadbed to the central direction of the original roadbed, a
geogrid and reinforcing ribs are laid on each step of the slope, layer-by-layer compaction is performed to obtain a new roadbed, and accordingly the new and old roadbeds can effectively
resist longitudinal acting force, the
settling inhomogeneity of the new and old roadbeds is balanced, and pavement
cracking is avoided; gravel piles are arranged on two sides of the joint of the new and old roadbeds and are coordinated with a support beam and fixing rings, so that the possibility of
cracking, caused by transverse acting force, between the new roadbed and the old roadbed is lowered effectively. The method has the advantages that the
settling quantity of the widening roadbed and a pavement during highway reconstruction and extension is reduced effectively,
cracking between the new pavement and the old pavement is avoided, the construction quality of the highway reconstruction and extension is increased, and service life is prolonged.