Experimental study on anti-impact performance of RHST and PCFST columns under lateral impact

2017 ◽  
pp. 415-422
Author(s):  
A.Z. Zhu ◽  
W. Xu ◽  
K. Gao ◽  
H.P. Zhu ◽  
F. Gao
Keyword(s):  
Experimental Study ◽  
Lateral Impact ◽  
Impact Performance

An Experimental Study on the Lateral Impact of Fully Clamped Mild Steel Pipes

1992 ◽  
Vol 206 (2) ◽  
pp. 111-127 ◽  
Author(s):  
N Jones ◽  
S E Birch ◽  
R S Birch ◽  
L Zhu ◽  
M Brown
Keyword(s):  
Experimental Data ◽  
Experimental Study ◽  
Mild Steel ◽  
Failure Modes ◽  
Experimental Results ◽  
Lateral Impact ◽  
Drop Hammer ◽  
Steel Pipes ◽  
Scale Range ◽  
The Impact

This report presents some experimental data that were recorded from 130 impact tests on mild steel pipes in two drop hammer rigs. The pipes were fully clamped across a span which was ten times the corresponding outside pipe diameters which lie between 22 and 324 mm. All of the pipes except five had wall thicknesses of 2 mm approximately and were impacted laterally by a rigid wedge indenter at the mid span, one-quarter span or near to a support. The impact velocities ranged up to 14 m/s and caused various failure modes. Some comparisons between two sets of experimental results indicate that the laws of geometrically similar scaling are almost satisfied over a scale range of approximately five.

Experimental study on residual axial bearing capacity of UHPFRC-filled steel tubes after lateral impact loading

Structures ◽  
2020 ◽  
Vol 26 ◽  
pp. 549-561
Author(s):  
Yongtao Mi ◽  
Zhongxian Liu ◽  
Weiqiang Wang ◽  
Yekai Yang ◽  
Chengqing Wu
Keyword(s):  
Experimental Study ◽  
Bearing Capacity ◽  
Impact Loading ◽  
Lateral Impact ◽  
Steel Tubes

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

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.

scholarly journals Experimental Study on FRP-Strengthened Steel Tubular Members under Lateral Impact

2017 ◽  
Vol 21 (5) ◽  
pp. 04017022 ◽  
Author(s):  
Md Iftekharul Alam ◽  
Sabrina Fawzia ◽  
Xiao-Ling Zhao ◽  
Alex M. Remennikov
Keyword(s):  
Experimental Study ◽  
Lateral Impact

scholarly journals Experimental study of CFRP strengthened steel columns subject to lateral impact loads

2018 ◽  
Vol 185 ◽  
pp. 94-104 ◽  
Author(s):  
Majid M.A. Kadhim ◽  
Zhangjian Wu ◽  
Lee S. Cunningham
Keyword(s):  
Experimental Study ◽  
Impact Loads ◽  
Lateral Impact ◽  
Steel Columns

Mechanism Analysis of Impact Performance for Tubular K-Joint under Lateral Impact Force

2014 ◽  
Vol 638-640 ◽  
pp. 149-152
Author(s):  
Sheng Zhi Song ◽  
Shu Song Sheng ◽  
Jian Jun Wei
Keyword(s):  
Finite Element ◽  
Numerical Analysis ◽  
Impact Force ◽  
Nonlinear Finite Element ◽  
Mechanism Analysis ◽  
Lateral Impact ◽  
Analysis Model ◽  
Impact Performance ◽  
Finite Element Software ◽  
Tubular Joint

Tubular structure can be damaged severely by collision accident. To study the failure mechanism of tubular joint under lateral impact force, typical tubular K-joint is selected as basic theoretical analysis model and it is simulated by nonlinear finite element software ABAQUS. On the base of numerical analysis, the development law of deformation and stress is clarified, and the failure mode of tubular K-joint is analyzed in the course of impacting.

The Influence of Controlled Rolling and Cooling on Microstructure and Mechanical Properties of Marine Steel

2020 ◽  
Vol 1003 ◽  
pp. 47-53
Author(s):  
Hao Xu Wang ◽  
Zhuang Li ◽  
Yi Qin Cai ◽  
Wen Hao Cai ◽  
Li Zhang ◽  
...  
Keyword(s):  
Impact Energy ◽  
Controlled Rolling ◽  
Granular Bainite ◽  
Longitudinal Impact ◽  
Lateral Impact ◽  
Impact Performance ◽  
Fine Grain ◽  
Temperature Impact ◽  
Low Temperature Impact Toughness ◽  
Better Than

A microstructure consisted of granular bainite, upper bainite, acicular ferrite, polygonal ferrite, and a little of pearlite was obtained by controlling rolling and cooling in marine steel. The grain size of the two steels was refined to 5-9 μm. The size of the MA island was about 3-6 μm. Both steels had higher tensile strength, yield strength, elongation and hardness, and the performance of steel B was better than that of steel A. Both steels exhibited large and deep dimples at -80 °C impact fracture. The longitudinal impact energy of the specimens was above 250J, and the steel B even exceeded 300J. Its longitudinal impact performance was better than lateral impact performance. Both steels had achieved good performance due to fine grain strengthening, MA island strengthening, precipitation strengthening and dislocation strengthening caused by controlled rolling and cooling. The alloying element nickel effectively improved the low temperature impact toughness of the experimental steel. Excellent impact energy of both steels was attributed to higher texture strength for RD specimens.

Experimental behaviour of hollow reinforced concrete members with inner octagonal steel tube under lateral impact

2019 ◽  
Vol 22 (15) ◽  
pp. 3328-3340
Author(s):  
Hui Zhao ◽  
Rui Wang ◽  
Chuanchuan Hou ◽  
Dongjie Zhang
Keyword(s):  
Reinforced Concrete ◽  
Load Ratio ◽  
Steel Tube ◽  
Lateral Impact ◽  
Low Velocity ◽  
Impact Performance ◽  
Failure Patterns ◽  
Concrete Members ◽  
Axial Load Ratio ◽  
The Impact

This work investigated the impact performance of hollow reinforced concrete members with inner octagonal steel tube. Experiments on 13 specimens subjected to low-velocity drop weight impact are presented in this article, covering key parameters such as the impact height, boundary condition, axial load ratio and thickness of the inner tube. The dynamic processes, failure patterns, impact force and mid-span deflection histories, and residual mid-span deflections were obtained from the experiments. Flexure-shear was observed as the main failure pattern for all the specimens under impact. It was found that all the key parameters considered had influences on the impact performance of hollow reinforced concrete specimens with inner octagonal steel tube. Effects of these parameters on the impact performance of hollow reinforced concrete members were discussed.

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