jinan international airport terminal expansion project covers an area of 80000㎡, with the length north-south 485m, and east-west 145 ～75m. if we see from the top, the whole building likes like a wild goose spread its wings to fly. v-type joint-shaped trestle and double curved double arc large span steel pipe truss roofing are adopted. for manufacturing of these steel structure, no project can be more difficult than in this at that time in china. this project is awarded the “luban award”.