Application of concrete filled steel tubular arch bridges in China

摘要

China is a mountainous developing country, in which a lot of streams and rivers rush throughrndeep valleys. Arch bridges are economically applicable to span river valleys and deep ravines with high-gradientrnrocky riverbank and fast water flow. Concrete-Filled Steel Tubes (CFST) are ideal structural solution for archrnbridges in China because of their high compressive strength as well as efficiency in construction. This paperrnconducted an extensive survey of the standing CFST arch bridges in China. The design of this kind of bridge,rnincluding the structural information of the bridge, the geometries and material properties of the arch, and thernconstruction method of the arch are discussed. Typical CFST arch bridges were introduced in more details.rnSuggestions on the design of this kind of bridges were brought forward.