Impact-resistant design of RC slabs in nuclear power plant buildings

Li, Z.C.; Jia, P.C.; Jia, Jingjing; Wu, Hao; Ma, Liangliang

doi:10.1016/j.net.2022.05.027

Cited by 11 publications

(1 citation statement)

References 28 publications

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“…The BHTS buffer interlayer, under the energy input of 1.236 kJ pulse, caused only slight plastic deformation of the top and bottom slabs ( Figure 15 e–g), and the crack trend showed a cross-shaped distribution that diverged from the center of impact to the surroundings. Under the energy input of 1.854 kJ, the RC slab underwent obvious plastic deformation, and the top and bottom slabs were damaged to different degrees: The surface of the RC top slab was penetrated with the bottom slab concrete was spalled off, the internal reinforcing structure was exposed, and the scabbing mode ( Figure 16 a–d) appeared [ 12 , 71 , 72 ]. The impact center of the top slab and the bottom slab concrete were annularly damaged, where the top slab concrete was mainly crushed and shear damaged, the bottom slab concrete was mainly tensile fracture, and the cracking trend of the top slab and the bottom slab concrete was still cross-shaped and X-shaped overlapping mode.…”

Section: Resultsmentioning

confidence: 99%

Protective Behaviors of Bio-Inspired Honeycomb Column Thin-Walled Structure against RC Slab under Impact Loading

Wang

Xia

2023

Biomimetics

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In order to protect the reinforced concrete (RC) slab structure from damage under some accidental conditions, such as impacting and explosion, we used bio-inspired honeycomb column thin-walled structure (BHTS) to serve as a buffer interlayer for the concrete structure inspired by the biological structure of beetle’s elytra. The mechanical properties of AlSi10Mg used to fabricate the BHTS buffer interlayer were determined by low- and medium-speed uniaxial compression tests and numerical simulations. Subsequently, based on the drop weight impact test models, the effect of the buffer interlayer on the response of the RC slab under the drop weight tests with different energy input was compared by the impact force and duration, maximum displacement and residual displacement, energy absorption (EA), energy proportion, and other indicators. The results show that the proposed BHTS buffer interlayer has a very significant protection effect on the RC slab under the impact of the drop hammer. Due to its superior performance, the proposed BHTS buffer interlayer provides a promising solution for EA of augmented cellular structures widely used in defensive structural components, such as floor slabs, building walls, etc.

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Section: Resultsmentioning

confidence: 99%