Performance of cable-stayed bridge pylons subjected to blast loading

Son, Jin; Lee, Hojung

doi:10.1016/j.engstruct.2010.12.031

Cited by 62 publications

(29 citation statements)

References 14 publications

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“…The incipient and reflected pressure waves were created from explosion of 45.4 kg TNT in the distance of 3.81m and 2.54m, respectively. In this figure, the data obtained from the experiment (Castellano et al, 1990), the numerical results of Son and Lee's study (Son & Lee, 2011) and numerical results of the current study are shown with positive black signs, red dots and blue dash lines, respectively. Results showed that the experimental data and the results of the present study were in an acceptable consistency, and accuracy of the numerical method was confirmed.…”

Section: Incipient and Reflected Pressure Wavesmentioning

confidence: 99%

“…When an incipient wave collides with a rigid body, pressure waves become reflected from the body, which is referred as the reflected pressure wave. Due to conversion of kinetic energy to potential energy, the magnitude of reflected waves is about 8-12 times more than that of the incipient pressure wave (Son & Lee, 2011). …”

Section: Incipient and Reflected Pressure Wavesmentioning

confidence: 99%

“…The aim of this joint study was to determine the magnitude of overpressure caused by explosion in different periods of time. The results of this joint work are known as a benchmark experimental data on blast and used as a validation case in different studies (Baylot et al, 2005;Rickman & Murrell, 2007;Son & Lee, 2011).…”

Section: Introductionmentioning

confidence: 99%

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A parametric study on the effects of surface explosions on buried high pressure gas pipelines

Adibi¹,

Azadi²,

Farhanieh³

et al. 2017

10.5267/j.esm

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Underground gas pipelines are one of the vital parts of each country which surface blasts can break down such pipelines, making destructive explosions and threatening the safety of neighborhood structures and people. In this paper, to enhance the safety of these lines, response of a buried 56-inch diameter high pressure natural gas pipeline to a surface blast was numerically investigated. Besides, the effects of: i) explosive mass, ii) pipeline thickness, iii) burial depth and iv) concrete protective layer on pipeline deformation were parametrically studied. To simulate the problem according to actual explosion events, geometries were modeled in real scales, pipeline properties were predicted with Johnson-Cook strength and failure model and soil strength was determined by Drucker-Prager model. Also, explosive charge and natural gas were modeled with JWL (Jones-Wilkins-Lee) and ideal gas equation of states. For validation of the numerical method, three bench mark experiments were reproduced. Comparison of the numerical results and the experimental data confirmed the accuracy of the numerical method. Results of parametric studies indicated that by increasing the burial depth from 1.4 to 2.2 m, deformation of the pipeline was reduced about 71%. By analyzing the deformation plots, it was found that in a constant explosive mass, burial depth has a greater effect than pipeline thickness on pipeline deformation reduction. It was also shown that using a concrete protective layer may act reversely and increase pipeline destruction. In other words, to enhance the safety of pipelines, a certain thickness of concrete must be used.

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Section: Incipient and Reflected Pressure Wavesmentioning

confidence: 99%

Section: Incipient and Reflected Pressure Wavesmentioning

confidence: 99%

See 1 more Smart Citation

A parametric study on the effects of surface explosions on buried high pressure gas pipelines

Adibi¹,

Azadi²,

Farhanieh³

et al. 2017

10.5267/j.esm

View full text Add to dashboard Cite

show abstract

“…ABAQUS, LY-DYNA), major developments in understanding the structural responses and failure modes of concrete structures under blast load have taken place. Many researchers have conducted comprehensive experimental and numerical investigations related to the effects of explosions on building structures (Tian et al, 2008;Jayasooriya et al, 2011), marine structures (Jin, et al, 2011;Zhang et al, 2011), underground structures (Ma et al, 2011;Li et al, (2013), and bridge structures (Hao et al, 2010;Son et al, 2011). In the modeling of transient loading, it is very critical to describe the propagation velocity of the stress waves correctly.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Shock Response and Dynamic Fracture of a Concrete Dam Subjected to Impact Load

Zhou

et al. 2016

Earth sci. res. j.

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The shock response and dynamic fracture of concrete gravity dams under impact load are the key problems to evaluate the antiknock safety of the dam. This study aims at understanding the effects of impact shock on the elastic response and dynamic fracture of concrete gravity dams. Firstly, this paper uses acceleration records of a concrete gravity dam under impact to establish the correct way to determine the concrete gravity dam of the fundamental frequency and present cut sheets multi-degree-of-freedom dynamic modeling. Under strong impact loading, the constitutive relation of concrete gravity dam and the highest frequency of the impact are uncertain. So, the main advantage of this method is avoiding the use of elastic modulus in the calculation. The result indicates that the calculation method is a reliable computational method for concrete gravity dams subjected to impact. Subsequently, the failure process of dam models was numerically simulated based on ABAQUS commercial codes. Finally, this paper puts forward suggestions for future research based on the results of the analysis. EARTH SCIENCES RESEARCH JOURNAL

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“…Recent advancements in numerical methods have enabled engineers to simulate complicated blast scenarios in a viable, efficient and cost-effective way and subsequently to provide useful reference data for the safeguarding design of critical infrastructures. Accordingly, computer simulations have been used by different researchers to capture the failure mode and dynamic response of cable stayed bridges subjected to hypothetical blast scenarios (Son and Lee 2011.…”

Section: Introductionmentioning

confidence: 99%

The performance of a cable-stayed bridge pylon under close-range blast loads

Hashemi¹,

Bradford²,

Valipour³

2015

Proceedings of the Second International Conference on Performance-Based and Life-Cycle Structural Engineering (PLSE 2015)

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Recent bridge collapses have raised an awareness of, and a concern for, the safety and robustness of bridges subjected to blast loading scenarios. The incident pressure generated by the explosion can cause severe structural damage and a loss of critical structural members, resulting in partial collapse of the bridge. Previously, most relevant research effort has been devoted to understanding the response of buildings under blast loading and to develop guidelines to increase the resistance of such structures, while relatively little research attention has been focused on bridge structures. Recent advancements in numerical methods have enabled the viable and cost-effective simulation of complicated blast scenarios, and hence these methods provide a useful reference for safeguarding design and assessment of critical infrastructure. To reduce the computational costs, previous studies on long span bridges under blast loads typically take advantage of sub-structuring techniques, in which only part of the structure is modelled. However, such oversimplifications can lead to erroneous results. Accordingly, this study is an attempt to simulate the dynamic response of an entire cable-stayed bridge subjected to blast loading based on best practice techniques obtained from the literature. The response of a steel bridge, designed according to the minimum requirements of the Australian Standard AS5100, is investigated when subjected to blast loads ranging from small to large explosions at different positions above the deck using numerical simulations. In addition, the potential effects of blast loads on different structural components (i.e. the deck and pylons) are discussed and possible blast mitigation strategies such as the application of FRP and optimization of the geometry of the pylons are investigated.

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Performance of cable-stayed bridge pylons subjected to blast loading

Cited by 62 publications

References 14 publications

A parametric study on the effects of surface explosions on buried high pressure gas pipelines

A parametric study on the effects of surface explosions on buried high pressure gas pipelines

Numerical Simulation of Shock Response and Dynamic Fracture of a Concrete Dam Subjected to Impact Load

The performance of a cable-stayed bridge pylon under close-range blast loads

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