Preliminary study of the structure and support forms to mitigate blast and impact loading effects

2010 ◽  
pp. 597-602 ◽  
Author(s):  
H Hao
Keyword(s):  
Impact Loading ◽  
Loading Effects ◽  
Preliminary Study

Numerical Simulation on Concrete Median Barrier for Reducing Concrete Fragment Under Harsh Impact Loading of a 25-ton Truck

2017 ◽  
Vol 139 (2) ◽  
Author(s):  
Jaeha Lee ◽  
Goangseup Zi ◽  
Ilkeun Lee ◽  
Yoseok Jeong ◽  
Kyeongjin Kim ◽  
...  
Keyword(s):  
Impact Loading ◽  
Traffic Accident ◽  
Impact Analysis ◽  
Threshold Value ◽  
Rigid Wall ◽  
Wire Mesh ◽  
Element Size ◽  
Preliminary Study ◽  
The Impact ◽  
Controlling Behaviors

Recently, there was a collision accident involving vehicle–concrete median barrier in South Korea, and unfortunately, passengers on the opposite direction road were killed by the flying broken pieces of concrete generated by the collision. Primarily after this accident, we felt the need for developing an improved concrete median barrier up to level of SB6 impact severity in order to minimize the amount of broken pieces of concrete and any possibility of traffic accident casualty under the impact loading of truck. Accordingly, in this study, several designs of concrete median barriers have been examined, and a preliminary study has been conducted for developing and verifying appropriate collision model. First, type of vehicle was selected based on impact analysis on rigid wall. Then, the effects of element size and other key parameters on the capacity of the concrete median barrier under impact were studied. It was found that the key parameters for controlling behaviors of the median barrier under impact loading were contact option, threshold value, and mesh and boundary conditions. Furthermore, as a parametric study, effect of geometry and amount of wire-mesh or steel rebar in concrete median barrier on impact resistances of median barrier for reducing the collision debris were investigated. The amount of volume loss after the collision of truck was compared for various reinforcement ratios.

Blast and impact loading effects on glass and steel elements and materials

2019 ◽  
Vol 134 ◽  
pp. 384-394 ◽  
Author(s):  
Michael V. Seica ◽  
Jeffrey A. Packer ◽  
David Z. Yankelevsky
Keyword(s):  
Impact Loading ◽  
Loading Effects

scholarly journals Preliminary Study on Beam-To-Column Joints Under Impact Loading

2018 ◽  
Vol 12 (1) ◽  
pp. 112-123 ◽  
Author(s):  
Marina D’Antimo ◽  
Massimo Latour ◽  
Gianvittorio Rizzano ◽  
Jean-François Demonceau ◽  
Jean-Pierre Jaspart
Keyword(s):  
Impact Loading ◽  
Human Error ◽  
Image Correlation ◽  
Experimental Campaign ◽  
Preliminary Study ◽  
European Projects ◽  
The University ◽  
Steel Joints ◽  
Globally Stable ◽  
Robustness Assessment

Background:Recent catastrophic events have pointed out the need to ensure the integrity of structures under “exceptional” events. Since many years, the University of Liège is involved in different activities and projects related to the robustness assessment of structures. The robustness of a structure is the ability of the system to remain globally stable after events not directly accounted for in the design, like impact, fire or consequences of a human error, which should lead to a reasonable damage when compared to the original cause.Objective:The presented preliminary work reports the experimental campaign of different European projects (FREEDAM and ROBUSTIMPACT) carried out or currently ongoing, with the aim of understanding the behaviour of different joint typologies under impact loading protocol.Method:The experimental programmes have mainly regarded static and impact tests on steel joints by the means of a dropping mass using DIC (Digital Image Correlation) for the data acquisition.Conclusions:In the present paper, an overview on the design criteria adopted in the design of the experimental campaign, for the FREEDAM project, is given, and some earliest results are discussed.

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