Blast mitigation effect of the foamed cement-base sacrificial cladding for tunnel structures

Zhao, Huiling; Yu, Huan; Yuan, Yong; He-hua, Zhu

doi:10.1016/j.conbuildmat.2015.07.076

Cited by 64 publications

(16 citation statements)

References 13 publications

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“…For instance, the overrun of planes in airport runways can be effectively stopped through the dynamic crushing of foam concrete as a special part of the runway [15]. In addition, it was found that reasonably designed foam concrete effectively mitigated tunnel lining deformation when subjected to an internal explosion [16].…”

Section: Introductionmentioning

confidence: 99%

CFRP Reinforced Foam Concrete Subjected to Dynamic Compression at Medium Strain Rate

et al. 2019

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Carbon fiber-reinforced polymer (CFRP)-confined foam concrete can be applied in structure protection, e.g., as an impact barrier of bridge piers, in which it is used as the core of the composite impact barrier. Applying CFRP to the foam concrete exterior enhances both the CFRP and the foam concrete, leading to improved compressive performance due to their interaction. In the present study, the carbon-fiber reinforced polymer (CFRP) confining effect on the response and energy absorption of foam concrete subjected to quasi-static and medium-strain-rate dynamic compression was experimentally investigated. The confinement by CFRP changed the response and failure mode of foam concrete specimens from shear in quasi-static load and splitting in dynamic load to crushing, resulting in a significant increase in the load bearing and energy absorption capacity. The composite consisting of CFRP and foam concrete was sensitive to strain rate. In particular, the CFRP–foam concrete interaction led to the remarkably improved resistance and energy absorption capacity of CFRP-confined specimens, which were significantly higher than the sum of those of standalone CFRP and foam concrete.

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Section: Introductionmentioning

confidence: 99%

CFRP Reinforced Foam Concrete Subjected to Dynamic Compression at Medium Strain Rate

et al. 2019

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“…However, the dynamic property of foam concrete is not well studied and only little research was reported, probably due to its limited applications subjected to dynamic load in the past. Zhao et al [6] investigated the protection of foam concrete layer in tunnel as sacrificial cladding, and found that the protection with a reasonable design against an internal explosion is effective.…”

Section: Introductionmentioning

confidence: 99%

Response and Energy Absorption of Concrete Honeycombs Subjected to Dynamic In-Plane Compression: A Numerical Approach

et al. 2019

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Foam concrete exhibits long stress plateau with increasing strain subjected to compression and absorbs a considerable amount of energy, making them promising for building and structure protection. In the present study, hexagonal concrete honeycombs are employed to approximately represent foam concrete, whose response and energy absorption subjected to dynamic in-plane compression are investigated with smooth particle hydrodynamics method. The response modes under low to high velocity crushing are numerically investigated, with which the critical velocity separating quasi-static response and progressive collapse mode is determined. Furthermore, the dynamic energy absorption capacity is examined and discussed.

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“…Tarlochan et al [16] conducted quasistatic compression experimental investigation of composite sandwich cladding structures fabricated from glass fiber, polystyrene foam, and epoxy resin. Zhao et al [17] proposed a foamed cement-based composite functional material as sacrificial cladding to provide the blast mitigation effect and investigated its response with different ingredient proportions and determined the optimized thickness of foamed cement-based sacrificial cladding.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Numerical Simulation on the Reduction Effect of Stress Waves Caused by Water Jet Slotting Near Blasting Source

Kang

et al. 2016

Shock and Vibration

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As one of the most serious “side effects” of blast excavation, blast-induced vibration must be controlled for existing buildings and human beings. This paper proposes a method for blast-induced vibration reduction with water jet assistance according to the cutting characters of low-noised, environment-friendly water jet. The mechanism of vibration-isolation with water jet assistance was analyzed, and the stress wave energy attenuation models were established based on blasting theory and stress wave theory. Influence law on shock wave attenuation by vibration-isolation slot was studied by numerical simulation. Simulation results agree with the theoretical analysis roughly. The results of this study put forward a method for blast-induced vibration near blasting source and provide a certain theoretical basis.

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Blast mitigation effect of the foamed cement-base sacrificial cladding for tunnel structures

Cited by 64 publications

References 13 publications

CFRP Reinforced Foam Concrete Subjected to Dynamic Compression at Medium Strain Rate

CFRP Reinforced Foam Concrete Subjected to Dynamic Compression at Medium Strain Rate

Response and Energy Absorption of Concrete Honeycombs Subjected to Dynamic In-Plane Compression: A Numerical Approach

Analysis and Numerical Simulation on the Reduction Effect of Stress Waves Caused by Water Jet Slotting Near Blasting Source

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