Dynamic Response of a Road Viaduct to a Mining Tremor Using Multiple Support Response Spectrum Method

Boroń, Paweł; Dulińska, Joanna

doi:10.1088/1757-899x/471/5/052065

Cited by 2 publications

(2 citation statements)

References 5 publications

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“…[2] emphasizes the detrimental influence of multiple support excitation on the seismic response of arch bridges regardless of their span. According to [5], this non-uniformity effect of ground motion led to significantly greater values of stresses compared to that of the uniform excitation when they observed the response of a concrete viaduct. On the other hand, the significant effect of the variation of ground motion in the seismic response of long-span and high-pier bridges was also observed [3].…”

Section: Discussionmentioning

confidence: 99%

Seismic Response Analysis of Bongo Bridge Subjected to Multiple Support Excitation due to Spatial Variation of Ground Motion

Mariano¹,

Estores²

2022

cea

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Section: Discussionmentioning

confidence: 99%

Seismic Response Analysis of Bongo Bridge Subjected to Multiple Support Excitation due to Spatial Variation of Ground Motion

Mariano¹,

Estores²

2022

cea

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“…The vast majority of multiple-support structures studies refer to a bridge's response to natural seismic shocks [12][13][14][15][16][17][18]. The authors listed the following four reasons for the spatial variability of earthquake ground motion that are taken into consideration during dynamic analyses: wave passage, incoherence, attenuation, and the site effect.…”

Section: Introductionmentioning

confidence: 99%

Advanced Model of Spatiotemporal Mining-Induced Kinematic Excitation for Multiple-Support Bridges Based on the Regional Seismicity Characteristics

2022

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In the paper, an advanced model of spatiotemporal mining-induced kinematic excitation (SMIKE) for multiple-support bridges exposed to mining-induced seismicity is proposed. The uniqueness of this model results from the possibility of its application in any region of mining activity, as it is based on empirical regression functions characterizing such regions. In the model, the loss of coherency resulting from the scattering of waves in the heterogeneous ground, the wave-passage effect originating in different arrival times of waves to consecutive supports, and the site-response effect depending on the local soil conditions are taken into account. The loss of coherency of mining-induced seismic waves is obtained by applying a random field generator based on a spatial correlation function to produce time histories of accelerations on consecutive structure supports based on an originally recorded shock. The deterministic approach is used to account for temporal wave variability. The proposed SMIKE model is applied to assess the dynamic performance of a five-span bridge under a mining-induced shock recorded in the Upper Silesian Coal Basin (USCB), Poland. The first model’s parameter (space scale parameter) is identified on the basis of regression curves defined for the USCB region. The estimation of the second parameter (the mean apparent wave passage velocity) is based on discrete experimental data acquired via the vibroseis excitation registered in the in situ experiment. The impact of the model application on the dynamic performance of the bridge is assessed by comparing the dynamic response levels under SMIKE excitations, classic uniform excitations, and the “traveling wave” model—accounting only for the wave passage effect. The influence of wave velocity occurs to be crucial, modifying (either amplifying or reducing, depending on the location of the analyzed point) the dynamic response level up to a factor of two. The introduction of the space scale parameter changes the results by 20% in relation to the outcomes obtained for the “traveling” wave only.

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Dynamic Response of a Road Viaduct to a Mining Tremor Using Multiple Support Response Spectrum Method

Cited by 2 publications

References 5 publications

Seismic Response Analysis of Bongo Bridge Subjected to Multiple Support Excitation due to Spatial Variation of Ground Motion

Seismic Response Analysis of Bongo Bridge Subjected to Multiple Support Excitation due to Spatial Variation of Ground Motion

Advanced Model of Spatiotemporal Mining-Induced Kinematic Excitation for Multiple-Support Bridges Based on the Regional Seismicity Characteristics

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