Seismic fragility analysis of reinforced concrete piers in spatially curved urban flyover

Xu, Tengfei; Zhang, Ziyang; Li, Yaping; Deng, Kailai; Chen, Weiting; Liang, Huanwei; Wang, Jianming

doi:10.1016/j.istruc.2020.08.018

Cited by 8 publications

(2 citation statements)

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“…Many scholars have performed fragility evaluation analyses of RC structures. Xu et al (2020) analyzed the seismic fragility of a representative spatially curved flyover and developed a probabilistic seismic demand model based on the peak stress of each column considering eight seismic attack angles of action to obtain the damage probability of columns. The research results showed that the probability of significant damage to a spatially curved bridge was sensitive to the attack angles of seismic action.…”

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: Introductionmentioning

confidence: 99%

“…Consequently, the complete structural failure process (i.e. from the elastic to elastic-plastic state until collapse) is considered (Xu et al. , 2020).…”

Section: Introductionmentioning

confidence: 99%