Tunnel portal wall foundation water passing structure at bridge and tunnel joint

The utility model relates to the technical field of water passing structures, in particular to a tunnel portal wall foundation water passing structure at a bridge-tunnel joint, which comprises a tunnel portal end wall, a bridge abutment, an L-shaped wall toe arranged at one end of the tunnel portal end wall, and a water passing box culvert arranged on one side of the L-shaped wall toe and combined with the L-shaped wall toe, one side of the water tank culvert is connected with a bridge abutment, and the water tank culvert is arranged on the L-shaped wall toe. The water passing structure has the advantages that the water passing structure penetrates through a tunnel route main body structure, the limited space between a bridge and a tunnel is reasonably utilized, and the situation that in order to meet the requirement for maintaining the ventilation of a water conservancy structure, large-scale changing and moving of the water conservancy structure or route scheme adjustment are conducted, and consequently mor