** Dmall

　Chief of Project: Li Genhua
　Shanghai People's Square Underground Garage is in the southwest of the center of Shanghai -- People's Square. It is a two-story structure, which has only columns and plates without beams. It connects with the Hongkong Shopping Street and People's Square Station of Subway No.1 in the east. The whole project is 174 meters long, 145 meter wide and 11.2 meters deep and the architectural area is 49,557 square meters. When it was constructing, we only used the constructing seam without any other kind of seams and we used "Central Island Digging Plan".
　This project is a large civil air defence work with dual utilization of peacetime and wartime. The first floor is a large shopping center named "Dmall". There are department stores, restaurants, pleasure ground and many kinds of facility rooms in it. The second floor is a garage, which is opened to the whole society. This garage can hold 591 cars.
　This project is a perfect combination of plane distribution and Greenland, and it is also a perfect combination of the traffic nets of ground and underground. We made different ways for people, cars and goods. The central road is designed as a refuge vinculum in order to resolve the difficulties in the use of underground space. In order to ameliorate the inside environment, we used a circular transparent space whose diameter is 20 meters and in the wartime, we will block up the necessary parts to meet the requirement of civil defence.