Damage assessment of circular bridge pier incorporating high-strength steel reinforcement under near-fault ground motions

Baig, Mirza Aamir; Ansari, Md. Imteyaz; Islam, Nazrul; Umair, Mohammad

doi:10.1016/j.matpr.2022.04.964

Cited by 11 publications

(4 citation statements)

References 25 publications

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“…The increase in the value of the L/D produced an increase in lateral displacement and a reduction in the basal shear force, as well as the piers with L/D between 3.8 and 5.4, failed due to flexion, the shorter piers with an L/D around 2.2 fell per shear; according to the works developed in this regard by (Tran et al 2020, andAamir Baig et al 2022). The nominal L/D analyzed 4, 6, 8,10.…”

Section: Geometrymentioning

confidence: 98%

Displacement-based seismic performance of RC bridge pier

Taipe,

Fernandez-Davila

2023

ABEN

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To correctly manage the road infrastructure before and after an earthquake, it is necessary to estimate and even predict the seismic performance of the bridge. The quantification of the bridge's seismic performance response was present in terms of displacement and also based on previous research of reinforced concrete bridge pier models. The displacement did define from a force lateral-displacement response diagram corresponding to the capacity curve, calculated through a non-linear static pushover analysis of the reinforced concrete bridge pier model for each limit state, from intact state to collapse. Thus, six defined displacements correspond to the cracking displacement, the yielding displacement, the spalling displacement, the crushing displacement, the buckling displacement, and the fracturing displacement. The six defined limit states correspond to the cracking limit state, the yielding limit state, the spalling limit state, the crushing limit state, the buckling limit state, and the fracturing limit state. Also, parametric analysis did carry out to evaluate the influence, relative importance, and trend of the input parameters in response to the seismic performance of the reinforced concrete bridge pier model. Eleven input parameters did analyze as the concrete compressive strength, the yield stress of reinforcing steel, the concrete cover thickness, the pier aspect ratio, the configuration of the transverse reinforcement, the spacing of the transverse reinforcing steel, the transversal diameter of the transverse reinforcing steel, the longitudinal reinforcement ratio, the transversal diameter of the longitudinal reinforcing steel, the axial load ratio, and coefficient of subgrade reaction.

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Section: Geometrymentioning

confidence: 98%

Displacement-based seismic performance of RC bridge pier

Taipe,

Fernandez-Davila

2023

ABEN

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“…For most ordinary RC bridge piers where bending failure is anticipated under earthquakes, the quantities related to section curvature at the pier base are naturally selected as the damage measure, for it can theoretically reflect the piers' seismic damage. Accordingly, the corresponding thresholds of section-curvature-related quantities for dividing damage states are studied and provided [4][5][6] . However, the section-curvature-related damage measure could not embrace the shear damage.…”

Section: Background and Motivationmentioning

confidence: 99%

A measure for multiple bends and shear damage of RC rigid-frame bridge tall piers: application to seismic fragility analysis

MEI,

Liu,

et al. 2023

Preprint

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The reinforced-concrete (RC) rigid-frame bridges with tall hollow piers were widely constructed in Southwestern China with many seismic activities. For such bridges, the seismic damages would be underestimated because of the tall piers’ multiple bends caused by their high-mode shapes that can be activated under earthquakes. Moreover, the seismic damage assessment can be incorrect if we ignore the tall piers’ shear damages caused by their vastly weakened sectional areas and multiple bends. With this respect, this paper presents a fragility analysis for such bridges. A novel seismic damage measure (piecewise drift ratio, PDR) involving shear effects and multiple bends is proposed and experimentally validated. Damage states congruent to the PDR are provided by statistically acquiring from the 40 existing tests of hollow piers. A finite element (FE) model of an RC rigid-frame bridge with two tall piers was established and adequately calibrated based on the model-updating hybrid tests. To provide more comprehensive assessments of the damage measures and the seismic fragility, the ground motions were selected and divided into four categories by identifying their first two frequencies and their amplitude ratio. Both the 5% damped spectral acceleration of the fundamental period (Sa(T1, 5%)) and the peak ground acceleration (PGA) are adopted as the demand parameter to develop the seismic demand models (PSDMs). Results show the effectiveness of the proposed PDR, provide the more adverse types of ground motions, and reveal the high exceedance probability of the complete damage state of tall piers.

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“…They are deformationrelated and energy-related damage indices [39]. Depending on the maximum displacement demand or drift demand [40], damage indicators are defined in the first category and the second category is based on hysteresis energy dissipation [41]. Furthermore, the combination of deformation and energy dissipations [42] are also available in the literature.…”

Section: Damage Distributionsmentioning

confidence: 99%

A Reliability-Based Framework for Damage Accumulation Due to Multiple Earthquakes: A Case Study on Bridges

et al. 2023

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Damage accumulation due to multiple seismic impacts over time has a significant effect on the residual service life of the bridge. A reliability-based framework was developed to make decisions in bridge maintenance activities. The feature of the framework enables quantifying the time-dependent probability of failure of bridges due to the impact of multiple earthquakes and progressive deterioration. To estimate the reliability of the bridge systems, the probability of failure of the bridge was used. Two case studies were utilised to demonstrate how the method can be applied to the real world. Results show that the accumulated damage caused by multiple earthquakes and progressive deterioration significantly impact the remaining useful life of the bridge. Furthermore, the soil conditions predominantly influence the progressive deterioration and reduce the service life of the bridge. Overall, the proposed framework enables the sustainable decision-making process for bridge maintenance activities. The results reveal the necessity of including the combined impact in the bridge maintenance system and that there is a more than 40% increase in the probability of failure, due to the combined effect of progressive deterioration and earthquake impacts, compared to the impact only due to seismic loads for the considered case study bridge.

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Damage assessment of circular bridge pier incorporating high-strength steel reinforcement under near-fault ground motions

Cited by 11 publications

References 25 publications

Displacement-based seismic performance of RC bridge pier

Displacement-based seismic performance of RC bridge pier

A measure for multiple bends and shear damage of RC rigid-frame bridge tall piers: application to seismic fragility analysis

A Reliability-Based Framework for Damage Accumulation Due to Multiple Earthquakes: A Case Study on Bridges

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