Seismic response of concrete bridge of Lanzhou-Xinjiang high-speed railway under the near-fault strong earthquake

Yan, Wujian; Xinxin, Tian; Wu, Zhijian; Wang, Ping; Lin, Kwei-Jay

doi:10.1016/j.istruc.2023.02.039

Cited by 8 publications

(1 citation statement)

References 14 publications

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“…Most modern infrastructures, such as bridges, power plants, and TV towers, are made of concrete and are exposed to various actions: earthquakes, climate change, aggressive environments, live load increases, wars, and terrorist threats [4,[12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27]. Urban warfare has contributed to the increasing presence of explosive materials in populated areas.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of the Explosion Effects on Reinforced Concrete Slabs with Fibers

Kušter Marić,

Ivanović,

Fusić

et al. 2024

Buildings

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In today’s world, concrete structures are exposed to various influences, including explosive actions. With the increasing use of fiber-reinforced concrete (FRC), it is essential to investigate its response to blast effects. As there are few studies on this topic worldwide, this research is dedicated to the question of how blast effects affect the damage and properties of six different types of reinforced concrete (RC) slabs. These samples differ in concrete classes (C30/37 and C50/60) and in the type of fibers added (steel and polypropylene). Visual inspections and non-destructive measurements are carried out before and after blasting. The damaged area of the concrete surface is determined by visual inspection, while non-destructive measurements evaluate parameters such as the rebound value of the Schmidt hammer, the electrical resistivity of the concrete, the velocity of the ultrasonic wave, and the dynamic modulus of elasticity. Equal amounts of explosives are applied to five of the RC slabs to enable a comparative analysis of the resulting damage. Based on the comparison of the measured data from these five RC slabs, conclusions are drawn regarding the effects of the explosive impacts on conventionally reinforced concrete slabs compared to those with added fibers. In addition, one of the RC slabs with steel fibers is exposed to approximately three times the amount of explosives to assess the extent of increased damage and to evaluate the suitability of military standards in the calculation of explosive charges for blasting RC elements with fibers.

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