Commencement time：2005-3-15

Completion time：2006-5-5

Introduction：The project is located in Tianjin Nanjiang Port Area, and is the underground envelope structure project, including 2 circular underground diaphragm walls and 432 cast-in-place piles. The envelope structure of the wagon tippler shed adopts the form of reinforced concrete underground diaphragm wall. The inner diameter of diaphragm wall foundation pit is 50m, the wall perimeter is 161 linear meters, the wall thickness is 1m, the wall bottom elevation is -25.0m, the wall top elevation is 3.2m, and the wall depth is 28.2m. The bored pile is arranged in the diaphragm wall, and there are 216 bored piles within the range of each diaphragm wall.