Design and Construction of Hoang van Thu Bridge in Vietnam

Abstract

The Hoang Van Thu Bridge is located in Haiphong, Vietnam. It is the first fly-bird-type concrete filled steel tube (CFST) arch bridge in Vietnam, with the span arrangements of 45 m + 120 m + 45 m. The structural design and construction method of Hoang Van Thu Bridge are mainly introduced in this paper. The main span of the bridge is a half-through CFST truss rib arch, and the two side spans are cantilever steel-shelled concrete half arches. Both the arch axis of the middle span and the two side spans are catenary. Steel-concrete composite structure was employed as the bridge deck systems. The main span CFST arch ribs were divided three segments, the two segments near arch abutments were erected by scaffolding method, and the rest segment was hoisted by crane. The two side spans concrete arch ribs were constructed by scaffolding method. The construction of Hoang Van Thu Bridge is expected to serve as an example for the promotion and application of CFST arch bridge in Vietnam.