Technology analysis and construction design of skew-arch bidge structures with especially large height ratio at phat tich bridge in bac ninh province

Abstract

The Phat Tich bridge across the Duong River in Bac Ninh Vietnam is designed in the form of an arch - hanging cables with a special structure of diagonal arches on the ground, supporting the bridge deck system with pre-stressed reinforced concrete (PC). Due to architectural and aesthetic requirements, the bridge arch was designed with a high height ratio, leading to difficulties and complications in design and construction technology. During the bridge construction process, many different technological options had to be analyzed and compared to choose a feasible option, ensuring economic-technical and safety criteria. The article introduces the process of analysis, technology selection and some main calculation contents in the design and construction step for the construction of Phat Tich bridge.

Keywords: Arch bridge - suspension cables; prestressed reinforced concrete beams; analysis and selection of construction technology; calculation of temporary auxiliary works for construction.