Zhi-Cheng Yang, Wei Li, Yu-Feng Cheng, Lin-Hai Han
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引用次数: 0
Abstract
This paper investigates the seismic performance of the grouted concrete-filled double skin steel tubular (CFDST) column base. Two column base specimens are tested under compression and lateral cyclic load, with analysis focused on investigating the failure modes, load-displacement relationship, strain distribution, deformation patterns, and the degradation of strength and stiffness. A finite element model is established, validated and employed for analysing the deformation and internal force. Three types of failure modes are identified, namely, the flexural failure at the CFDST column, the pullout failure of the grout, and the punching shear failure of the grout. These failure modes vary depending on parameters such as the embedment depth and the compressive strength of the grout. At shallow embedment depths, pullout failure at the grout becomes more prominent. Conversely, insufficient compressive strength of the grout enhances the risk of punching shear failure at the grout. A design method is proposed by parametric analysis, encompassing the flexural resistance calculation and structural detailing recommendations.
期刊介绍:
Engineering Structures provides a forum for a broad blend of scientific and technical papers to reflect the evolving needs of the structural engineering and structural mechanics communities. Particularly welcome are contributions dealing with applications of structural engineering and mechanics principles in all areas of technology. The journal aspires to a broad and integrated coverage of the effects of dynamic loadings and of the modelling techniques whereby the structural response to these loadings may be computed.
The scope of Engineering Structures encompasses, but is not restricted to, the following areas: infrastructure engineering; earthquake engineering; structure-fluid-soil interaction; wind engineering; fire engineering; blast engineering; structural reliability/stability; life assessment/integrity; structural health monitoring; multi-hazard engineering; structural dynamics; optimization; expert systems; experimental modelling; performance-based design; multiscale analysis; value engineering.
Topics of interest include: tall buildings; innovative structures; environmentally responsive structures; bridges; stadiums; commercial and public buildings; transmission towers; television and telecommunication masts; foldable structures; cooling towers; plates and shells; suspension structures; protective structures; smart structures; nuclear reactors; dams; pressure vessels; pipelines; tunnels.
Engineering Structures also publishes review articles, short communications and discussions, book reviews, and a diary on international events related to any aspect of structural engineering.