Layout structure for integration of train depot and junction station of urban rail

The invention provides a layout structure for integration of a train depot and a junction station of an urban rail. The layout structure is composed of the junction station, a main line, a turn line, a release line, a lead line, a testing line, a train washing workshop, a parking train examination shop, a plant un-wheeling repair shop, an internal combustion adjustment engine shop, an engineering garage, related lines and turnout junctions, a comprehensive office building, a hazardous material storage and a guardroom erected on the ground. In the structure, the junction station, the turn line, the release line, a train washing line and the parking train examination shop are arranged in a tandem feed-through manner, a return section train starts from a station and enters the train washing workshop for washing through an entry line, and after washing, the return section train can directly enter the parking train examination for storage or enter the plant un-wheeling repair shop for inspection and repair. The le