Abstract:Taking the construction project of Shayong Bridge in Binhaiwan New District of Dongguan as the background, a design concept of double-limb special-shaped steel-box bowstring butterfly-type arch bridge in the coastal area is introduced. The relevant boundary conditions of the bridge construction are briefly introduced, and the design concept of the bridge is set forth. The schemes are studied from the bridge type layout, main arch, suspender, main girder and other aspects. And the preliminary static analysis is carried out for the whole bridge. The preliminary study on the wind resistance of rigidity suspender is also implemented.