Design of Main Bridge of Haixin Bridge in Guangzhou

The Haixin Bridge, a footbridge over Zhujiang River in Guangzhou, is designed echoing the cultural elements of " Guqin (zither) , silk dance and Lingnan show boat" in the Guangdong Province. The main bridge is a half-through steel arch bridge spanning 198. 152 m and featuring its curved deck and skew arch. The footbridge carries two walkways that resemble a fork in each side span and merge to be an integral deck in the central span, with a typical deck width of 15 m. Consisting of round-ended steel boxes with constant depth and variable width, the parabolic arch rises 57. 95 m and inclines 10 eastward, creating a rise-to-span ratio of 1/3. 4. The sections of the arch counting from the arch springing to the deck are composed of UHPC-encased steel boxes. The deck also curves eastward, stretching along a plan curvature radius of 129. 1 m. The central span consists of three-cell steel box girders with variable depths, while the side spans are comprised of split single-cell steel box girders. Radially arranged, the 23 hangers are made of GJ15-19 steel strands, with extrusion type anchorage. The arch is inserted into the skewbacks in the river, which are in turn supported on pile caps measuring 20 m by 20 m, and together with the nine reinforced concrete piles of 3 m diameter to resist the horizontal thrust of the arch. The calculations indicate that the deformation, stiffness walking comfort, wind resistance, seismic performance and collision resistance of the structure all reach the required level. The bridge is a typical precast segmental structure. © 2023 Wuhan Bridge Research Institute. All rights reserved.