Joint structure of precast box culvert unit with anti-sedimentation configuration by inserting precast concrete box culvert unit on both sides of connecting anchor bar

摘要

The present invention relates to a joint structure of a new type of precast box culvert unit, which can prevent the breakage at the joint of the precast box culvert unit due to uneven settlement by increasing the resistance at the joint between the precast box culvert units. . In the present invention, a plurality of the joining structure of the culvert unit 10 which constitutes a precast concrete box culvert by being joined to each other in the longitudinal direction, the filling portion 11 is formed on the joint surface of the culvert units on both sides; The filling portion 11 is formed with a concave insertion portion 30 having a deeper reverse tapered shape; Both ends of the connecting anchor bar 20 are inserted into the insertion portions 30 of the culvert units 10, respectively, and the connecting anchor bars 20 are connected to each other with the joining surfaces of the two culvert units 10 facing each other. ) Is disposed across both culvert units 10; Filling material 13 is injected into the filling portion 11 and the inserting portion 30 while the bonding surfaces of the two culvert units 10 face each other, are filled and cured, and the culvert unit 10 is continuously integrated and integrally coupled. A joint structure of a precast concrete box culvert unit is provided.