CIRCULAR DOUBLE SKIN STAINLESS STEEL TUBULAR COLUMN FILLED WITH UHPFRC SUBJECTED TO IMPACT LOAD

Mapping Intimacies ◽

10.37516/global.j.civ.eng.2021.0143 ◽

2021 ◽

pp. 1-11

Author(s):

KHALID ABDEL NASER ABDEL RAHIM

Keyword(s):

Smart Materials ◽

Impact Loading ◽

Failure Modes ◽

Impact Load ◽

Steel Tube ◽

Fiber Reinforced Concrete ◽

Lateral Impact ◽

Transverse Impact ◽

Residual Displacements ◽

Double Skin

Concrete filled steel tube (CFST) column is an important type of structural member and its protective design is essential to enhance its structural performance under various dynamic loads. Previously carried out studies on CFST columns tried to determine how to improve their structural response under various loadings, such as axial compression, lateral impact, blast, seismic, etc. Apart from investigations on transverse impact loading, the majority of the other studies on CFST under various loads established solutions and protective measures. Therefore, this study aim is to improve the performance of CFST under transverse impact loads. The geometrical and mechanical properties, boundary conditions, impact loading and dynamic explicit analysis employed in that study. This paper proposes a novel design in terms of cross-sectional configuration and smart materials to be applied on the CFST in order to improve its performance under lateral impact loading. The proposed investigation is exclusively numerical and its results were verified with the experimental results from literature. The considered three main variables were including (1) concrete-filled double skin steel tubular – CFDST with both first sandwich layer and internal carbon steel tube filled with normal strength concrete – NSC, (2) CFDST with first sandwich layer filled with Ultra High-Performance Fiber-Reinforced Concrete – UHPFRC. a. The parameters including failure modes, maximum mid-span deflection, and residual displacements were presented.

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Behavior of Rectangular-Sectional Steel Tubular Columns Filled with High-Strength Steel Fiber Reinforced Concrete Under Axial Compression

Materials ◽

10.3390/ma12172716 ◽

2019 ◽

Vol 12 (17) ◽

pp. 2716 ◽

Cited By ~ 6

Author(s):

Shiming Liu ◽

Xinxin Ding ◽

Xiaoke Li ◽

Yongjian Liu ◽

Shunbo Zhao

Keyword(s):

Energy Dissipation ◽

Bearing Capacity ◽

Failure Modes ◽

Steel Fiber ◽

Volume Fraction ◽

Local Buckling ◽

Steel Tube ◽

Fiber Reinforced Concrete ◽

Steel Fiber Reinforced Concrete ◽

Energy Dissipation Capacity

This paper studies the effect of high-strength steel fiber reinforced concrete (SFRC) on the axial compression behavior of rectangular-sectional SFRC-filled steel tube columns. The purpose is to improve the integrated bearing capacity of these composite columns. Nine rectangular-sectional SFRC-filled steel tube columns and one normal concrete-filled steel tube column were designed and tested under axial loading to failure. The compressive strength of concrete, the volume fraction of steel fiber, the type of internal longitudinal stiffener and the spacing of circular holes in perfobond rib were considered as the main parameters. The failure modes, axial load-deformation curves, energy dissipation capacity, axial bearing capacity, and ductility index are presented. The results identified that steel fiber delayed the local buckling of steel tube and increased the ductility and energy dissipation capacity of the columns when the volume fraction of steel fiber was not less than 0.8%. The longitudinal internal stiffening ribs and their type changed the failure modes of the local buckling of steel tube, and perfobond ribs increased the ductility and energy dissipation capacity to some degree. The compressive strength of SFRC failed to change the failure modes, but had a significant impact on the energy dissipation capacity, bearing capacity, and ductility. The predictive formulas for the bearing capacity and ductility index of rectangular-sectional SFRC-filled steel tube columns are proposed to be used in engineering practice.

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Study on the Impact Response of Concrete Filled FRP-Steel Tube Structures

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.368-373.549 ◽

2011 ◽

Vol 368-373 ◽

pp. 549-552

Author(s):

Chen Chen ◽

Ying Hua Zhao ◽

Chun Yang Zhu ◽

Li Wei

Keyword(s):

Impact Load ◽

Steel Tube ◽

Fiber Reinforced Polymer ◽

Experimental Result ◽

Lateral Impact ◽

Steel Tubes ◽

Impact Performance ◽

Reinforced Polymer ◽

The Impact ◽

Frp Sheet

This paper studies the impact performance of concrete filled FRP-steel tube which is a composed structure made by filling concrete into steel tube and wrapping outside with fiber reinforced polymer (FRP) sheet. Numerical simulations have been conducted to study the dynamic response of fixed-pined supported beams of concrete filled FRP-steel tubes. The finite element models of concrete filled FRP-steel tubes are established to analyse its lateral impact dynamic characteristics under different loading situations, with respective kinds of FRP and thicknesses of steel tubes. The impact force and displacement histories were recorded. Comparing to the traditional concrete filled steel tube structure, the concrete filled FRP-steel tube indicates a promising structure with more advantages in the mechanical and constructional performance. Especially with its higher loading-carrying capacity and better toughness, it is more adaptable for the structures subjected to accidental impact load. Analytical solution is compared with experimental result to show the correctness and the effectiveness of present study.

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Performance of hollow steel tube bollards under quasi-static and lateral impact load

Thin-Walled Structures ◽

10.1016/j.tws.2014.11.024 ◽

2015 ◽

Vol 88 ◽

pp. 41-47 ◽

Cited By ~ 18

Author(s):

Soheila Maduliat ◽

Tuan Duc Ngo ◽

Phuong Tran ◽

Raymond Lumantarna

Keyword(s):

Impact Load ◽

Steel Tube ◽

Lateral Impact

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Collapse Behaviour of a Concrete-Filled Steel Tubular Column Steel Beam Frame under Impact Loading

Advances in Materials Science and Engineering ◽

10.1155/2021/6637014 ◽

2021 ◽

Vol 2021 ◽

pp. 1-15

Author(s):

Lian Song ◽

Hao Hu ◽

Jian He ◽

Xu Chen ◽

Xi Tu

Keyword(s):

Finite Element ◽

Impact Loading ◽

Mechanical Performance ◽

Impact Load ◽

Frame Structure ◽

Actual Condition ◽

Transverse Impact ◽

Time Curve ◽

Finite Element Software ◽

The Impact

The progressive collapse of a concrete-filled steel tubular (CFST) frame structure is studied subjected to impact loading of vehicle by the finite-element software ABAQUS, in the direct simulation method (DS) and alternate path method (AP), respectively. Firstly, a total of 14 reference specimens including 8 hollow steel tubes and 6 CFST specimens were numerically simulated under transverse impact loading for verification of finite-element models, which were compared with the existing test results, confirming the overall similarity between them. Secondly, a finite-element analysis (FEA) model is established to predict the impact behaviour of a five-storey and three-span composite frame which was composed of CFST columns and steel beams under impact vehicle loading. The failure mode, internal force-time curve, displacement-time curve, and mechanical performance of the CFST frame were obtained through analyzing. Finally, it is concluded that the result by the DS method is closer to the actual condition and the collapse process of the structure under impact load can be relatively accurately described; however, the AP method is not.

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Investigation of the effect of impact load on concrete-filled steel tube columns under fire

Frattura ed Integrità Strutturale ◽

10.3221/igf-esis.54.22 ◽

2020 ◽

Vol 14 (54) ◽

pp. 317-324

Author(s):

Ali Golsoorat Pahlaviani ◽

Ali Mohammad Rousta ◽

Peyman Beiranvand

Keyword(s):

Impact Load ◽

High Strength ◽

Concrete Columns ◽

Steel Tube ◽

Lateral Impact ◽

Concrete Filled Steel Tube ◽

Axial Strength ◽

High Rise ◽

Working Space ◽

Cfst Columns

Concrete-filled steel tube (CFST) columns are increasingly used in the construction of high-rise buildings which require high strength and large working space especially at lower stories. As compared to reinforced concrete columns, existence of the exterior steel tube not only bears a portion of axial load but also most importantly provides confinement to the infill concrete.with the confinement provided by the steel tube, axial strength of the infill concrete can be largely enhanced.this paper presents the investigation effect of impact load on concrete-filled steel tube columns under fire by numerical simulations using ABAQUS software.the results indicate that the CFST sections with larger confinement factor ξ=1.23 behaved in a very ductile manner under lateral impact. And the sections with smaller confinement factor ξ=0.44 generally behaved in a brittle mechanism.

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