A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention discloses a chain type butt strap structure based on a seamless bridge. The chain type butt strap structure comprises a bridge abutment, a girder, a bridge deck and two or more butt straps, wherein the bridge abutment, the girder and the bridge deck form the main bridge section, and the butt straps are arranged at the end of the main bridge section in parallel and in the length direction of the main bridge section. Expansion joints are formed between the main bridge section and the butt strap closest to the main bridge section and between every two adjacent butt straps. The main bridge section and the butt strap closest to the main bridge section and every two adjacent butt straps are connected through dumbbell-shaped-structure steel bars, each dumbbell-shaped-structure steel bar is composed of a linear steel bar and two annular steel bars connected to the two ends of the linear steel bar, and the two annular steel bars are fixed inside the main bridge section and the butt strap or respectively fixed inside two butt straps. According to the invention, cracks in the joints of the butt straps at the rear part and the bridge abutment of the seamless bridge and pavement cracks in the joints of the tail ends of the butt straps and a roadbed can be eliminated, the stress performance of the butt straps of the seamless bridge can be effectively improved, and therefore the drive comfort of vehicles can be improved.
The invention discloses a chain type butt strap structure based on a seamless bridge. The chain type butt strap structure comprises a bridge abutment, a girder, a bridge deck and two or more butt straps, wherein the bridge abutment, the girder and the bridge deck form the main bridge section, and the butt straps are arranged at the end of the main bridge section in parallel and in the length direction of the main bridge section. Expansion joints are formed between the main bridge section and the butt strap closest to the main bridge section and between every two adjacent butt straps. The main bridge section and the butt strap closest to the main bridge section and every two adjacent butt straps are connected through dumbbell-shaped-structure steel bars, each dumbbell-shaped-structure steel bar is composed of a linear steel bar and two annular steel bars connected to the two ends of the linear steel bar, and the two annular steel bars are fixed inside the main bridge section and the butt strap or respectively fixed inside two butt straps. According to the invention, cracks in the joints of the butt straps at the rear part and the bridge abutment of the seamless bridge and pavement cracks in the joints of the tail ends of the butt straps and a roadbed can be eliminated, the stress performance of the butt straps of the seamless bridge can be effectively improved, and therefore the drive comfort of vehicles can be improved.
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