Seismic fragility curves development for double-column piers of highway bridges applying Cox hazard models of survival analyses

Lu, Guanya; Liu, Ang; Guo, Weizuo; Zhang, Xiyin

doi:10.1016/j.istruc.2022.09.056

Cited by 4 publications

(4 citation statements)

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“…The reports on sleeves placed in the body of prefabricated columns with three collapse damage forms have been published in literature. These damage forms are column bottom damage, sleeve top section damage, and sleeve top and column bottom with double plastic hinge damage (Lu et al, 2022;Zhao et al, 2017;Mian and Xu, 2013), as shown in Figure 3. The damage form of the column with a sleeve in the bearing is approximately the same as that of the cast-in-place column.…”

Section: Seismic Fragility Of Prefabricated Columnsmentioning

confidence: 99%

Section: Grouting Sleeve Connection Prefabricated Column Collapse Jud...mentioning

confidence: 99%

“…It is a quantitative description that is generally expressed in the form of curves. The fragility curves describe the hazard of an earthquake relative to a structure's ability to resist seismic action from the probabilistic perspective (Wang et al, 2023a, b, c;Lu et al, 2022). Generally, four types of structural fragility curves are considered: (1) empirical curves, (2) judgment curves,…”

Section: Introductionmentioning

confidence: 99%

“…The fragility curves describe the hazard of an earthquake relative to a structure’s ability to resist seismic action from the probabilistic perspective (Wang et al. , 2023a, b, c; Lu et al. , 2022).…”

Section: Introductionmentioning

confidence: 99%

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Study on seismic fragility of prefabricated columns connected by grouted sleeves based on IDA method

Wang,

Jia,

Zhao

2024

IJSI

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PurposePrefabricated columns connected by grouted sleeves are increasingly used in practical projects. However, seismic fragility analyses of such structures are rarely conducted. Seismic fragility analysis has an important role in seismic hazard evaluation. In this paper, the seismic fragility of sleeve connected prefabricated column is analyzed.Design/methodology/approachA model for predicting the seismic demand on sleeve connected prefabricated columns has been created by incorporating engineering demand parameters (EDP) and probabilities of seismic failure. The incremental dynamics analysis (IDA) curve clusters of this type of column were obtained using finite element analysis. The seismic fragility curve is obtained by regression of Exponential and Logical Function Model.FindingsThe IDA curve cluster gradually increased the dispersion after a peak ground acceleration (PGA) of 0.3 g was reached. For both columns, the relative displacement of the top of the column significantly changed after reaching 50 mm. The seismic fragility of the prefabricated column with the sleeve placed in the cap (SPCA) was inadequate.Originality/valueThe sleeve was placed in the column to overcome the seismic fragility of prefabricated columns effectively. In practical engineering, it is advisable to utilize these columns in regions susceptible to earthquakes and characterized by high seismic intensity levels in order to mitigate the risk of structural damage resulting from ground motion.

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Section: Seismic Fragility Of Prefabricated Columnsmentioning

confidence: 99%

Section: Grouting Sleeve Connection Prefabricated Column Collapse Jud...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%