Response of high-strength reinforced concrete beams under shock-tube induced blast loading

Li, Yang; Algassem, Omar; Aoude, Hassan

doi:10.1016/j.conbuildmat.2018.09.005

Cited by 41 publications

(10 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…13 Figure 5c shows a schematic of the load-transfer device at rest and during testing. 6,13 The beams were connected to the end-frame using pin-pin supports, while dynamic reactions were captured using load-cells at the supports. Displacements were recorded using a linear variable differential transducer (LVDT) placed at mid-height of the specimen, with data also captured using a high-speed camera at 2000 frames/second.…”

Section: Blast Loading Testmentioning

confidence: 99%

“…To link the tests to actual blast conditions, the scaled distance (Z) for each blast test is reported in Table 4. For instance, Blast 2 approximates the shockwave generated by a blast having a scaled distance of 6.7 m/kg 1/3 , corresponding to 400 kg of TNT at a standoff of 50 m. 6 3 | EXPERIMENTAL RESULTS…”

Section: Blast Loading Testmentioning

confidence: 99%

“…While previous blast research has primarily focused on civilian and military buildings, critical bridges, transportation assets and parking garages are also vulnerable to blast loads. 5,6 In fact, an analysis conducted by the U.S. State Department has highlighted that transportation infrastructure has been an attractive target of terrorist attacks due to its socio-economic impact. 5 In addition, these structures are more difficult to protect against these threats than buildings.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Blast performance and analysis of reinforced concrete beams subjected to corrosion of the longitudinal reinforcement

Njeem

Aoude

Martı́n-Pérez

et al. 2022

Structural Concrete

Self Cite

View full text Add to dashboard Cite

This research has investigated the effect of reinforcement corrosion on the flexural response of reinforced concrete beams subjected to blast loading. Five beams, with and without corrosion, were tested under blast loads using a shock‐tube. The corroded specimens were subjected to an accelerated corrosion regime prior to testing, with a mass loss of up to 22% in the longitudinal steel reinforcement over the mid‐span or full‐span regions. A companion set of two beams was tested under quasi‐static four‐point bending. The results from the static tests show that corrosion of the longitudinal reinforcement decreased the strength and ductility, and ultimately changed the failure mode from ductile to brittle. Under blast loading, the steel corrosion increased maximum displacements and support rotations, reduced blast capacity, increased damage and fragmentation, and led to more brittle failure as the % mass loss increased. The effects of corrosion on blast response were moderate when the steel was corroded over the full‐span region. Furthermore, the blast response of the beams was predicted using dynamic inelastic single‐degree‐of‐freedom (SDOF) analysis, with the resistance functions developed using 2D finite element modeling, while accounting for the reduction in steel stress–strain properties and corrosion‐induced cracking. The SDOF analysis showed acceptable results in terms of ability to predict maximum displacements of the flexural‐governed beams (corroded and un‐corroded).

show abstract

Section: Blast Loading Testmentioning

confidence: 99%

Section: Blast Loading Testmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Blast performance and analysis of reinforced concrete beams subjected to corrosion of the longitudinal reinforcement

Njeem

Aoude

Martı́n-Pérez

et al. 2022

Structural Concrete

Self Cite

View full text Add to dashboard Cite

show abstract

“…Blast loading response is an essential aspect of civilian and military structures that are likely to be subjected to accidental explosions and terrorist attacks (Chen et al, 2011;Jones, 1990). These extreme events demand a better understanding of structural behavior especially for appraising their safety (Biju et al, 2017;Jahami et al, 2019;Lee & Kwak, 2018;Li et al, 2018;Liu et al, 2018;Magnusson & Hallgren, 2004;Magnusson et al, 2010;Temsah et al, 2018;Young Lee et al, 2018;Zhang et al, 2013). Numerous experimental and numerical studies have been carried out in which damage of blast-loaded structural components is appraised (Guzas & Earls, 2011;Kirsch & Bogomolni, 2007;Nawar et al, 2021;Portioli, 2020;Tian et al, 2020;Wu et al, 2020;Yu et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

An Improved Linear Complementarity Solver for the Dynamic Analysis of Blast Loaded Structures

Khan

Tariq

Ullah

et al. 2022

Int J Concr Struct Mater

View full text Add to dashboard Cite

The linear complementarity problem (LCP) approach, expedited by using the simple rigid–plastic theory, has been utilized successfully in predicting the numerical response of the ductile steel or concrete structures subjected to short-duration, high-intensity dynamic loads. The current study attempts to improve the computational stability of this powerful technique while determining the response of skeletal structures under blast loading. The performance of the Lemke LCP solver is amplified by introducing an automatic time-stepping scheme to efficiently trace the complex dynamic response using either lumped mass or continuous mass discretization. The computational efficiency of this solver is tested against carefully chosen three numerical examples, and the acquired results are in good agreement with the derived closed-form solution and results from other sources.

show abstract

“…In [5] an experimental investigation is accomplished to assess the strain rate effect on HSC under dynamic loading, in which a noticeably rate dependency is remarked. In [6] an experimental program is carried out to test the performance of HSRC beams under quasi-static and blast loads. The main conclusion of the study is that the concrete strength does not significantly affect the specimen behavior under blast loads.…”

Section: Introductionmentioning

confidence: 99%

Reassessment of the flexural behavior of high-strength reinforced concrete beams under short-term loads

Tamayo

Garcia

2021

SN Appl. Sci.

View full text Add to dashboard Cite

This work aims at describing the behavior of high-strength reinforced concrete (HSRC) beams under short-term ultimate loads with concrete compressive strengths higher than 50 MPa. A plastic approach besides a cross sectional analysis is employed to primarily trace the nonlinear response of nineteen HSRC simply supported beams for which experimental results are available. This proposed theoretical approach is able to acceptably match the experimental data with minor overestimation of flexural moments. Closed-form expressions to evaluate ductility indexes regarding deflections and curvatures as well as plastic rotation capacities are also proposed herein. Predictions of the National Brazilian Regulation for design of concrete structures NBR6118 in terms of ultimate flexural moments are also computed for comparison. A complete assessment of ductility in which plastic rotation capacities are computed for the studied beams is also given. It is found that the flexural ductility of a member could be increased with the use of high strength concrete. The use of a maximum tension steel ratio to guarantee a minimum flexural of ductility is highlighted.

show abstract

Response of high-strength reinforced concrete beams under shock-tube induced blast loading

Cited by 41 publications

References 27 publications

Blast performance and analysis of reinforced concrete beams subjected to corrosion of the longitudinal reinforcement

Blast performance and analysis of reinforced concrete beams subjected to corrosion of the longitudinal reinforcement

An Improved Linear Complementarity Solver for the Dynamic Analysis of Blast Loaded Structures

Reassessment of the flexural behavior of high-strength reinforced concrete beams under short-term loads

Contact Info

Product

Resources

About