Design scheme of steel structure of reverse building method is adopted in the Guangzhou Mingsheng Square Project, long span steel arch truss structure is applied to transition story in building engineering, which is a new try.

Ultimate load-carrying capacity of steel-tube truss rib arch bridge;

The mass-concrete is poured in multi-stage partition,and reinforced by rebar and nuts during construction of dumbbell steel pipe arch rib.

With steel tube arch rib concrete construction of Haikou Extra Large Bridge as an example,detailed description of concrete press-casting of steel tube arch was given.

As a key working procedure in concrete-filled steel tube arch bridge,the quality of manufacturing and precasting of steel tube arch rib should be paid much attention,and should be manufactured in factories do the best we can if conditions permitted.

The conceptual design for erecting the steel tube arch ribs of the bridge with vertical rotation method, and the process flow, key points to the construction techniques to be used in the erection are elaborated in detail.