The Yangyinguan Bridge is located at K32+497 of G244 National Road in Baoji City, Shaanxi Province. The bridge has a total length of 26 meters and a deck width of 15 meters. The superstructure is a 2-span 13-meter prestressed concrete hollow slab with continuous deck. The pier adopts single row column pier, with 2 piles in transverse. Bored pile foundation, with a diameter of 120 centimeters were used. The bridge deck pavement includes 9cm asphalt concrete, ATR-1 waterproof layer and 10cm C40 concrete. 0.5 meters rigid anti-collision railings are set on both sides of the bridge. On both sides of the bridge, two grade flat approach slab and concrete buried plate are set, and the length is 3 meters. The bridge is equipped with two abutments and 6cm width expansion joints are reserved at the abutments. The bridge is an deck-extension abutment bridge, i.e., the expansion joint between the main beam and the abutment is retained, the expansion device at the bridge deck is eliminated, and the deformation of the main beam due to temperature change is led to the approach slab and the junction roadway. Thus, it can improve driving comfort, reduce jumping and contribute to driving safety
The Yangyinguan bridge was constructed by Baoji Highway Administration and designed by Xi'an Highway Research Institute. The School of Civil Engineering of Fuzhou University is responsible for the scientific research project with the bridge as the background, and has guided the design of the bridge and carried out research on the bridge structure. The bridge was completed and opened to traffic in July 2018.
(a) Side view of the bridge
(b) Pavement