A STRUCTURE OF PRESTRESSED CONCRETE PAVEMENT AND ITS CONSTRUCTION METHOD

摘要

A prestressed concrete road pavement structure and a construction method of a prestressed concrete road pavement structure are provided to execute new and repair works in a short period of time by prestressing to a concrete pavement of a general road and tensing first and second tendons in the center of a concrete slab, to provide a high quality concrete pavement road without maintenance by restraining the formation of cracks, preventing the breakage of a concrete pavement and extending the service life, and to prevent noise occurrence and lowering of ride comfort and to improve in appearance by constructing a concrete slab of a long span in a construction site and reducing the number of joints. A prestressed concrete road pavement structure for introducing a prestressed concrete pavement method to a general road comprises a concrete slab(10) installed to a road, a tension pocket unit(50) formed between one end and the other end of the concrete slab to penetrate the concrete slab in the vertical direction, a first tendon(20) installed to the inside of the concrete slab to make one end fixed to one end of the concrete slab by an anchorage(45) and the other end extended to the inside of the tension pocket unit, a second tendon(30) installed to the inside of the concrete slab to make one end fixed to the other end of the concrete slab and the other end extended to the inside of the tension pocket unit, and a coupler(40) installed to the inside of the tension pocket unit and connecting the ends of the first and second tendons to keep the first tendon and the second tendon tensed. A construction method of a prestressed concrete road pavement structure comprises the steps of: marking the installation site of a first tendon and a second tendon on a part for concrete pavement to construct a concrete slab on a road; installing a tension pocket unit to form a tension pocket unit on the concrete slab on a part for concrete pavement; installing a first tendon and a second tendon on the installation site of the first tendon and the second tendon, and installing an anchorage coupled to the opposite ends of the first tendon and the second tendon to be located on two ends of a part for concrete pavement, and connecting the two facing ends of the first and second tendons using a coupler in the tension pocket; after installing the first and second tendons, the coupler and the tension pocket, paving concrete on a part for concrete pavement; after curing the concrete, tensing the first and second tendons by pulling at least one end of the first tendon and the second tendon coupled to the coupler after curing the concrete; and tensing the first and second tendons two times.