| No back-stays & inclined pylon cable-stayed bridge is a new cable-stayed bridge style. It is the specialty of this style bridge that substitutes the deadweight of inclined pylon for the back stays force to counteract the girder deadweight of main-span. At present, this type bridges are few. So more systematic researches for some crucial problems that will be met in its construction and design, will be helpful for the development of this bridge type. In this paper, some studies on the determining of reasonable construction state, parameter analysis and construction controlling of no back-stays & inclined pylon cable-stayed bridge are carried out based on the Hongshan Bridge, Changsha, Hunan Province, China. 1,This text calculates No back-stays sharp-shaped inclined pylon cable-stayed bridge of Changsha Hongshan Bridge with forward-iteration method, carries on emulation calculation for its two kinds of construction schemes, gets the comparatively rational scheme, and takes rational scheme as the theoretical foundation of construction controlling. 2, Because it is studied less at present about how the parameters which account for No back-stays sharp-shaped inclined pylon cable-stayed bridge effect on whole construction course and completed bridge state, so this text conducts dead-weight of structure, rigidity, and shrinking creep to analyze whose effects on the structure in construction course and completed bridge state. The inclination of the tower is an important parameter in the cable-stayed bridge of leaning tower, so whose effects on completed bridge state structure are analyzed. 3, Changsha Hongshan Bridge is novel in structure and complicate in technology, and such construction controlling of this type is almost unable to draw lessons from other same type bridges at home. This text introduces the basic situation, controlling results and controlling characters of Hongshan Bridge.
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