Experimental investigation on lateral impact response of concrete-filled double-skin tube columns using horizontal-impact-testing system

Aghdamy, Sanam, Thambiratnam, David, & Dhanasekar, Manicka (2016) Experimental investigation on lateral impact response of concrete-filled double-skin tube columns using horizontal-impact-testing system. Experimental Mechanics, 56(7), pp. 1133-1153.

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Abstract

This paper presents an experimental investigation on the lateral impact performance of axially loaded concrete-filled double-skin tube (CFDST) columns. These columns have desirable structural and constructional properties and have been used as columns in building, legs of off shore platforms and as bridge piers. Since they could be vulnerable to impact from passing vessels or vehicles, it is necessary to understand their behaviour under lateral impact loads. With this in mind, an experimental method employing an innovative instrumented horizontal impact testing system (HITS) was developed to apply lateral impact loads whilst the column maintained a static axial pre-loading to examine the failure mechanism and key response parameters of the column. These included the time histories of impact force, reaction forces, global lateral deflection and permanent local buckling profile. Eight full scale columns were tested for key parameters including the axial load level and impact location. Based on the test data, the failure mode, peak impact force, impact duration, peak reaction forces, reaction force duration, column maximum and residual global deflections and column local buckling length, depth and width under varying conditions are analysed and discussed. It is evident that the innovative HITS can successfully test structural columns under the combination of axial pre-loading and impact loading. The findings on the lateral impact response of the CFDST columns can serve as a benchmark reference for their future analysis and design.

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ID Code: 94747
Item Type: Journal Article
Refereed: Yes
Keywords: Experimental testing, Lateral impact, Concrete-filled double-skin tube (CFDST), Horizontal impact, Axial pre-loading
DOI: 10.1007/s11340-016-0156-z
ISSN: 1741-2765
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Structural Engineering (090506)
Divisions: Current > Schools > School of Civil Engineering & Built Environment
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Facilities: Banyo Pilot Plant
Copyright Owner: Copyright 2016 Springer New YorK LLC
Deposited On: 12 Apr 2016 01:58
Last Modified: 22 Sep 2016 23:36

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