Reinforcing structure for gas pipeline to transversely penetrate through subway deep foundation pit

The invention relates to the technical field of foundation pit construction, in particular to a reinforcing structure for a gas pipeline to transversely penetrate through a subway deep foundation pit, which comprises an excavation support reinforcing structure, a construction period reinforcing structure, a maintenance reinforcing structure and a backfill support reinforcing structure. The gas pipeline deformation caused in the excavation process is avoided; the gas pipeline maintenance unit comprehensively inspects the exposed gas pipeline and reinforces the detection defect part, so that the gas pipeline is in a good state; the backfill supporting and reinforcing structure comprises a backfill layer isolation lower plate arranged on the lower side of the gas pipeline, a second bracket matched with the first bracket is arranged at the upper end of the backfill layer isolation lower plate, a lifting supporting body is arranged between the upper end of the second bracket and the first bracket, and reinforcing