Seismic Energy Loss in Semi-rigid Steel Frames Under Near-Field Earthquakes

Sharma, Vijay; Shrimali, Mahendra Kumar; Bharti, Shiv Dayal; Datta, T. K.

doi:10.1007/978-981-15-8138-0_33

Cited by 13 publications

(9 citation statements)

References 10 publications

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“…, 2019; Sharma et al. , 2020a, b, c); therefore, PGA is selected as the IM of ground motion in this paper. Shome et al.…”

Section: Nonlinear Fe Model For Offshore Rc Piermentioning

confidence: 99%

“…, 2019; Sharma et al. , 2020a, b, c; 2021a, b, c). Especially, bridge structures are vital nodes in transportation engineering due to their large size, high capital investment and ability to overcome topographical obstacles such as rivers and oceans.…”

Section: Introductionmentioning

confidence: 99%

“…On the basis of nonlinear time-history analysis, some scholars use the linear regression analysis method to establish probabilistic seismic demand model or use Incremental Dynamic Analysis (IDA[1]) method to directly calculate the exceeding probability (EP) of different earthquake intensity levels without regression analysis, and then establish the seismic fragility curves (Ajamy et al. , 2018; Brunesi et al ., 2018; Sharma et al. , 2021).…”

Section: Introductionmentioning

confidence: 99%

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Analysis of time-varying seismic fragility of rigid frame pier of offshore bridge

Liang

Wei

et al. 2022

IJSI

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PurposeAlthough mechanical behavior of rigid frame pier has been clearly recognized, their time-varying seismic performance are yet to be well characterized due to some offshore piers that are eroded by chloride ion and located in earthquake-prone area. In this study, the time-variant seismic fragility analysis was conducted to evaluate seismic performance of rigid frame pier under four damage states with considering the time-varying characteristics of the material.Design/methodology/approachThis paper establishes the nonlinear finite element model for the investigated offshore reinforcement concrete (RC) pier with considering the time-varying durability damage of the materials and defines the damage state, damage position and damaged index of the offshore RC pier. It also analyzes the time-varying seismic fragility of the offshore RC pier by using the capacity demand ratio method in the whole life cycle.FindingsThe results show that chloride induced corrosion has a significant effect on the rigid frame pier and bending capacity of top section is less than that of bottom section. The rate of decline accelerates after the service life reaching 30 years under the coupling of the earthquake and the environmental erosion. In the early years of service, the seismic fragility of the structure changed slowly.Originality/valueThis paper analyzes the influencing factors of seismic performance of rigid structure pier, and analyzes the seismic capacity and seismic performance of rigid structure pier under different service periods.

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“…, 2019; Sharma et al. , 2020a, b, c); therefore, PGA is selected as the IM of ground motion in this paper. Shome et al.…”

Section: Nonlinear Fe Model For Offshore Rc Piermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analysis of time-varying seismic fragility of rigid frame pier of offshore bridge

Liang

Wei

et al. 2022

IJSI

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“…In general, distributed plasticity approaches are more accurate but also more complicated and computationally expensive than plastic hinge approaches [ 22 ]. Researchers have mainly focused on developing analysis methods for static problems rather than dynamic problems [ 9 , 12 , 14 , 18 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 ].…”

Section: Introductionmentioning

confidence: 99%

“…Recently, Sharma et al. (2020) [ 38 ] researched dynamic responses of rigid and semi-rigid steel frames under near- and far-field earthquakes.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear time-history earthquake analysis for steel frames

Nguyen

Tran

Nguyen

2021

Heliyon

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This study presents a simple, efficient, accurate method for nonlinear time-history earthquake analysis of spatial steel frames. The proposed new fiber plastic hinge method simulating only one element for each member captures the time-history dynamic behavior of steel frames as accurately as sophisticated plastic zone methods. Stability functions and the geometric stiffness matrix are employed for predicting the second-order effects that aim to minimize computational time and computer resources. Residual stresses are considered through two fiber plastic hinges by assigning initial stress values. A numerical integration procedure using Newmark integration combined with the Newton-Raphson balanced iteration algorithm is developed to find a solution to nonlinear dynamic equilibrium equations of the structural system. Shear deformation effects are also considered in the dynamic analysis. The proposed software, named Direct Advanced Analysis and Design (DAAD), is proved to be accurate and reliable as compared with the analysis results generated by expensive commercial Finite Element Analysis (FEA) software packages. The proposed DAAD program can be improved for performance-based direct design and analysis.

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