Development of pressure-impulse models and residual capacity assessment of RC columns using high fidelity Arbitrary Lagrangian-Eulerian simulation

Abstract Pressure-Impulse (P-I) models as graphical representations are frequently adopted to evaluate damage of structures subjected to extreme loads. The main objectives of this research is to derive analytical formulas to propose pressure (P0) and impulsive (I0) asymptotes of RC columns at different levels of damages, and to develop P-I models and empirical equations of RC columns for prediction and assessment of blast induced damages using an advanced numerical modeling approach. An innovative technique to predict the residual capacity of RC columns when subjected to detonation events is essential to measure the column axial capacity after blast loads. This study can offer a methodology for a reliable, simple and accurate dynamic analysis to study the residual capacity of columns under blast detonation. Available literature mainly focused on the simulation of explosion loads by using simplified pressure time histories to develop P-I curves and rarely simulated the actual explosive. Therefore, there is a gap in the literature concerning general relation between blast damage of columns with different explosive loading conditions for a reliable and quick evaluation of column behavior subjected to blast loading. In this paper, the Arbitrary Lagrangian Eulerian (ALE) technique is implemented to simulate high fidelity blast pressure propagations. The numerical model is calibrated and validated by comparing the results from blast field tests performed by other researchers. To develop the designated P-I curves, damage assessment criteria are used based on the residual capacity of column. Intensive investigations are implemented to assess the effect of column dimension, concrete and steel properties, reinforcement ratio and axial load index on the P-I diagram of RC columns. The produced P-I models can be applied by designers to predict the damage of new columns and to assess existing columns subjected to different blast load conditions.

[1]  Vincent Denoël,et al.  Pressure–impulse diagram of a beam developing non-linear membrane action under blast loading , 2015 .

[2]  Chengqing Wu,et al.  Derivation of normalized pressure impulse curves for flexural ultra high performance concrete slabs , 2013 .

[3]  Qingming Li,et al.  Pressure-Impulse Diagram for Blast Loads Based on Dimensional Analysis and Single-Degree-of-Freedom Model , 2002 .

[4]  J. Małachowski,et al.  Numerical and experimental testing of vehicle tyre under impulse loading conditions , 2016 .

[5]  Werner Riedel,et al.  Residual load capacity of exposed and hardened concrete columns under explosion loads , 2013 .

[6]  Mohd Shahir Liew,et al.  Single-Degree-of-Freedom Based Pressure-Impulse Diagrams for Blast Damage Assessment , 2014 .

[7]  T. Łodygowski,et al.  Masonry wall behaviour under explosive loading , 2019, Engineering Failure Analysis.

[8]  Łukasz Mazurkiewicz,et al.  Optimization of protective panel for critical supporting elements , 2015 .

[9]  Azrul A Mutalib,et al.  Development of P-I diagrams for FRP strengthened RC columns , 2011 .

[10]  John Hetherington,et al.  Blast and ballistic loading of structures , 1994 .

[11]  Chunwei Zhang,et al.  Effects of axial load on nonlinear response of RC columns subjected to lateral impact load: Ship-pier collision , 2018, Engineering Failure Analysis.

[12]  L. Javier Malvar,et al.  Review of Strain Rate Effects for Concrete in Tension , 1998 .

[13]  L. Malvar,et al.  A PLASTICITY CONCRETE MATERIAL MODEL FOR DYNA3D , 1997 .

[14]  Ali Toghroli,et al.  Large deflection behavior effect in reinforced concrete columns exposed to extreme dynamic loads , 2020, Frontiers of Structural and Civil Engineering.

[15]  L. Malvar REVIEW OF STATIC AND DYNAMIC PROPERTIES OF STEEL REINFORCING BARS , 1998 .

[16]  Ebuka Nwankwo,et al.  Pressure-Impulse Diagrams for Blast Loaded Continuous Beams Based on Dimensional Analysis , 2013 .

[17]  Hong Hao,et al.  Reliability analysis of direct shear and flexural failure modes of RC slabs under explosive loading , 2002 .

[18]  Matteo Colombo,et al.  Pressure--impulse diagrams for RC and FRC circular plates under blast loads , 2012 .

[19]  Azrul A Mutalib,et al.  Numerical analysis of FRP-composite-strengthened RC panels with anchorages against blast loads , 2011 .

[20]  A. Mutalib,et al.  Investigation into Damage Criterion and Failure Modes of RC Structures When Subjected to Extreme Dynamic Loads , 2020, Archives of Computational Methods in Engineering.

[21]  Bing Li,et al.  Residual Strength of Blast Damaged Reinforced Concrete Columns , 2010 .

[22]  Mohamed H. Mussa,et al.  Assessment of damage to an underground box tunnel by a surface explosion , 2017 .

[23]  Azrul A Mutalib,et al.  Pressure–Impulse (P–I) Diagrams for Reinforced Concrete (RC) Structures: A Review , 2019 .

[24]  Ganesh Thiagarajan,et al.  Study of Pressure-Impulse Diagrams for Reinforced Concrete Columns Using Finite Element Analysis , 2013 .

[25]  Hong Hao,et al.  Numerical derivation of pressure-impulse diagrams for prediction of RC column damage to blast loads , 2008 .

[26]  S. H. Perry,et al.  Compressive behaviour of concrete at high strain rates , 1991 .

[27]  Simon K. Clubley,et al.  Residual axial capacity of reinforced concrete columns subject to internal building detonations , 2016 .

[28]  James T. Baylot,et al.  Effect of responding and failing structural components on the airblast pressures and loads on and inside of the structure , 2007 .

[30]  Chunwei Zhang,et al.  Nonlinear dynamic behavior of simply-supported RC beams subjected to combined impact-blast loading , 2019, Engineering Structures.

[31]  Cheng-Wei Hung,et al.  Numerical Simulation of Near-Field Explosion , 2013 .

[32]  Paweł Baranowski,et al.  Blast loading influence on load carrying capacity of I-column , 2015 .