Railway bridge lower pipeline protection structure

The utility model relates to the technical field of railway bridge underground protection, in particular to a railway bridge lower pipeline protection structure, which is mainly applied to flammable and explosive pipeline protection and is characterized by comprising a beam body and retaining walls arranged on two sides of the bottom of the beam body, the beam body is supported above the retaining walls, steel sheet piles are arranged at the bottoms of the retaining walls, and the steel sheet piles are connected with the beam body. The beam body, the retaining wall and the steel sheet piles define a protection area of the pipeline. The device has the advantages that the device can span dense pipelines, the span is large, construction is convenient and fast, railway safety is guaranteed, and pipeline maintenance and overhaul are convenient; and the structure is simple and reasonable, various pipelines can be effectively protected, and the device is suitable for popularization. 本实用新型涉及铁路桥梁地下防护技术领域，尤其是一种铁路桥梁下管线防