Influence of Supports on the Low-Velocity Impact Response of Square RC Slab of Standard Concrete and Ultra-High Performance Concrete: FEM-Based Computational Analysis

Anas, S.M.; Shariq, Mohd; Alam, Mehtab; Yosri, Ahmed M.; Deifalla, Ahmed Farouk; AbdelMongy, Mohamed

doi:10.3390/buildings13051220

Cited by 22 publications

(6 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are also studies focused on the impact behaviors of a concrete beam consisting of additive materials like polypropylene or steel fibers [37][38][39][40][41]. Recent comprehensive studies related to impulsive loads such as impact and blast effects were also taken place in the literature [42][43][44][45].…”

Section: Introductionmentioning

confidence: 99%

Numerical Evaluation on Impact Behavior of Seismically and Non-Seismically Detailed RC Beams

2024

IJSCER

View full text Add to dashboard Cite

There is an increasing tendency among structural engineers to consider impulsive loads, such as impact and blast loads, in the design of RC members since these loads acting for short time intervals may lead to severe damage to structural elements or even collapse the whole structure. In contrast, the traditional design primarily considers the static loads and the dynamic loads like earthquake and wind effects, disregarding impulsive loads. At this point, it is critical to determine the dynamic response and failure characteristics of existing RC beams designed without special precautions against impact effects since these beams may expose impact load in their service period. The present study intends to reveal the impact resistance and general impact behavior of seismically and non-seismically designed RC beams. For this purpose, an improved finite element code, including the erosion algorithm and considering the strain-rate effects for concrete and steel material, has been established to evaluate the impact response of RC beams, and it has been verified with experimental data provided by a previously published study. Then, using verified finite element code, a parametric study was conducted where the effects of the shear reinforcement ratio, the application point of impact load, and the applied input impact energy on the dynamic responses and damage patterns of the RC beams. Results from numerical analysis were evaluated in detail, and interpretations related to the impact behavior of seismically and non-seismically designed RC beams were made.

show abstract

Section: Introductionmentioning

confidence: 99%

Numerical Evaluation on Impact Behavior of Seismically and Non-Seismically Detailed RC Beams

2024

IJSCER

View full text Add to dashboard Cite

show abstract

“…Blast intensity, distance, and column shape affected the damage, highlighting the need to consider blast loading in column design [9]. In 2023, Anas [10] use FEM to examine how support conditions (simply vs. three-edge) and material (standard vs. UHPC) affect square RC slabs under low-velocity impacts (displacement, stress/strain, cracks, failure). This informs design for such impacts.…”

Section: Introductionmentioning

confidence: 99%

Response of Single Plane Reinforced Concrete Cable-Stayed Bridge with Prestressed Deck under Blast Load

Elansary,

Khalil,

Hasan

2024

JES. Journal of Engineering Sciences

View full text Add to dashboard Cite

Studies on cable-stayed bridges exposed to blast loads encounter significant challenges arising from the complex interaction among different structural elements. Despite extensive investigation into how buildings respond to explosive loads, there is limited literature on the dynamic response of prestressed concrete bridge decks to blast loads. Single plane cable stayed bridges are very sensitive to cable loss or degradation. This study investigates the response of a prestressed concrete cable-stayed bridge with a single plane under blast loads, utilizing a comprehensive Finite Element (FE) model that incorporates nonlinear effects. The investigation considers blast weights of 230 kg, 680 kg, and 2270 kg of TNT. The analysis reveals that even small explosions cause damage to the deck, with more significant effects observed under higher blast loads, resulting in a damaged region measuring 12 m x 10 m with a 2270 kg TNT weight. Forces in cables near the detonation point increase by 19% during a 2270 kg TNT explosion. Notable changes are observed in pylon moments under different explosion charges. Maximum Bending Moment (BM) values are observed at the base under dead loads, while BMs at mid-height increase under various blast weights, with no discernible change at the base. This study provides valuable insights for designers, emphasizing the importance of incorporating explosion-resistant design principles into cable-stayed bridges.

show abstract

“…Columns play a crucial role in the construction industry [8][9][10][11][12]. If any of these elements were to malfunction on a localized level, it could result in the complete failure of the entire framework, especially if the construction does not have redundant load pathways [13][14][15][16][17][18][19]. Structural engineers go to great lengths to design columns with an adequate safety factor against service loads.…”

Section: Introductionmentioning

confidence: 99%

Numerical Modeling of Steel Column for its Response to Large Explosive Loading using CEL-FEM Approach

Anas,

Alam,

Kanaan

et al. 2023

E3S Web Conf.

Self Cite

View full text Add to dashboard Cite

In the past few decades, there has been a growing public concern regarding the protection of infrastructures against extreme events, specifically explosive detonations. Traditional structural design has predominantly focused on accounting for gravity, seismic, and wind loads as the primary factors to consider. The rise in subversive attacks has led to a heightened focus on blast load and its impact on infrastructures. Unconfined, surface explosions are a common type of terrorist attack that occurs outside of buildings. This has necessitated a greater understanding of the effects these explosions can have on structures. A comprehensive numerical model was created in Abaqus for a steel column measuring 2.41m in length and having a W150x24 cross-section. The model was then subjected to a powerful explosion equivalent to 100kg-TNT, with a standoff distance of 10.30m. To achieve this, an Eulerian-Lagrangian approach coupled with the Finite-element method (CEL-FEM) was employed. A thorough investigation was conducted by modifying the explosion's altitude (i.e., blast height), and the subsequent dynamic responses were analyzed and discussed. The outcomes of this investigation significantly enhance our comprehension of how steel columns respond when subjected to intense explosive forces.

show abstract

Influence of Supports on the Low-Velocity Impact Response of Square RC Slab of Standard Concrete and Ultra-High Performance Concrete: FEM-Based Computational Analysis

Cited by 22 publications

References 41 publications

Numerical Evaluation on Impact Behavior of Seismically and Non-Seismically Detailed RC Beams

Numerical Evaluation on Impact Behavior of Seismically and Non-Seismically Detailed RC Beams

Response of Single Plane Reinforced Concrete Cable-Stayed Bridge with Prestressed Deck under Blast Load

Numerical Modeling of Steel Column for its Response to Large Explosive Loading using CEL-FEM Approach

Contact Info

Product

Resources

About