State of the art of creep of concrete filled steel tubular arches

Abstract

The state of the art of creep of Concrete Filled Steel Tubular (CFST) arch bridges including CFST members is presented in this paper. It is delineated that researches on creep of CFST is not mature and need much study compare to creep of plain concrete and reinforced concrete. In comparison with the plain concrete members, creep magnitude in CFST is relatively low but, the duration is longer. Creep has much influence on the deformation, stress redistribution between steel tube and core concrete and to reduce the buckling strength of CFST arches; how to implement the research results on actual arch bridge design is necessary part of research in pending. A good creep prediction model is the urgent essence of today's design works with CFST element.

State of the art on the time-dependent behaviour of composite steel–concrete structures

“…Recent work aimed to evaluate suitable creep models to be used for the service design of composite columns, which can be used for either building or bridge applications, including CFST arch bridges [21]. The use of the B3 model [22] is recommended for the determination of the creep coefficients in unpublished work reported in [23] based on extensive comparisons between numerical and experimental results, while [24,25] suggested the use of the Eurocode 2 [26] for both normal and expansive concretes.…”

Experimental Study on Strength of Connections to Concrete Filled Tubular in Fire

“…Isolated connection tests under fixed loads, either in bending, tension, compression or their combinations cannot capture the changing nature of connection performance and its impact on the adjacent structure's behaviour. Therefore, it is essential to carry out fire tests on structural assemblies consisting of connections and other structural members [5].…”

Experimental Investigation of the Creep Behaviour of Coal by Monitoring Changes of Acoustic Properties

“…The mathematical models are established mainly for two purposes: facilitation of structural analysis and close agreement with experimental data. Based on the effective modulus method [14,15], the rate-of-creep model [16], rate-of-flow model [17], and Arutyunian-Maslov model [18] were proposed to simplify the structural analysis. The B3 model [19] and Double power law [20] were formulated with a view to improve the data fitting and predication.…”