Li Dong, Meixu Deng, Yi Zhang, and Songhui Li. Pseudo-static Test of Vehicle Load on New Type of Penetrating Abutment Slab Connection Structure. Dynamic Systems and Applications 29 (2020) No. 8, 2619 – 2634

https://doi.org/10.46719/dsa20202986

ABSTRACT.
In order to solve the problem of bump at bridge head fundamentally, a new through-bridge abutment strap connection structure was proposed to cover the shortage in traditional bridgehead strap connection. Through performing full scale model test to sections of new through-bridge abutment strap connection structure, the engineering applicability of such new structure from perspectives of bearing capacity and deformation requirements, the design principle of “strong abutment, weak connection” and the damage of embedded rigid permeable plate were verified. According to results, under the quasi-static condition of vehicle load, the new abutment strap structure meets the bearing capacity and deformation requirements under design load. When the loading level exceeds the designed vehicle load, the rebar at joint part yields and is damaged, but the concrete on abutment still works. Such damage conforms to design principle of “strong abutment, weak connection” and there is safety stock to some extent. During continuous loading, the strain produced by embedded rigid permeable plate is less than the failure strain. Therefore, it can meet the force requirement of the component.

Keywords: highway bridge; bump at bridge head; through-bridge abutment; slap connection; full scale model test.