Applicability of pushover analysis-based seismic performance evaluation procedure for steel arch bridges

Lu, Zhihao; Ge, Hanbin; Usami, Tsutomu

doi:10.1016/j.engstruct.2004.07.013

Cited by 30 publications

(18 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the mathematical basis of the procedure is far from accurate; it is assumed that the nonlinear response of a multi degree-of-freedom structure can be related to the response of an equivalent single degree-of-freedom model (SDOF), which implies that the response is controlled by a single mode; furthermore it is assumed that this modal shape remains constant through the analysis [4]. Although these assumptions are clearly incorrect, if the structure response is dominated by the first mode of vibration the estimated results have been found to be generally accurate compared with rigorous NL-RHA [4,9,10]. Different proposals have been made to overcome the aforementioned shortcomings, briefly described in the following lines.…”

Section: Introductionmentioning

confidence: 92%

“…So far, most of the research is currently focused on buildings and few works address the problem of the applicability of pushover analysis to bridges [9,10,20]; the work of Paraskeva et al [21] proposed key issues to employ MPA to bridges, providing information about the selection of the control point (among other features), and applying the procedure to a strongly curved bridge, where transverse modes present displacements also in longitudinal direction. Nonetheless, no specific studies on this topic about cablestayed bridges have been found by the authors.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Pushover analysis for the seismic response prediction of cable-stayed bridges under multi-directional excitation

Cámara

Suárez

2012

Engineering Structures

View full text Add to dashboard Cite

Cable-stayed bridges represent nowadays key points in transport networks and their seismic behaviour needs to be fully understood, even beyond the elastic range of materials. Both nonlinear dynamic (NL-RHA) and static (pushover) procedures are currently available to face this challenge, each with intrinsic advantages and disadvantages, and their applicability in the study of the nonlinear seismic behaviour of cable-stayed bridges is discussed here. The seismic response of a large number of finite element models with different span lengths, tower shapes and class of foundation soil is obtained with different procedures and compared. Several features of the original modal pushover analysis (MPA) are modified in light of cable-stayed bridge characteristics, furthermore, an extension of MPA and a new coupled pushover analysis (CNSP) are suggested to estimate the complex inelastic response of such outstanding structures subjected to multi-axial strong ground motions.

show abstract

Section: Introductionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Pushover analysis for the seismic response prediction of cable-stayed bridges under multi-directional excitation

Cámara

Suárez

2012

Engineering Structures

View full text Add to dashboard Cite

show abstract

“…The aim of the push-over analysis is to determine, statically, the resistant capacity, ductility, collapse mechanism and security level of the structure, without performing complex nonlinear seismic analysis [7,8]. The ultimate state considered was: ULS71 = 1.15PP + 1.5PN + 1IMP + 1.1QA + LF x VS+ 1VT.…”

Section: Messina Tower Longitudinal Push-over Analysismentioning

confidence: 99%

Seismic analyses of the Messina Bridge project

Hernández¹,

Romera²,

Baldomir³

et al. 2007

WIT Transactions on Engineering Sciences, Vol 58

View full text Add to dashboard Cite

In this paper several preliminary works developed to determine the seismic response of the Messina Bridge project are presented. Firstly the different types of non-linear structural models developed are shown, including global models for the macro-level static and dynamic analysis, and local models for the micro-level analysis. Then, the analyses and several results obtained for static and nonlinear seismic time histories analyses are explained. Finally, the results of the Messina local tower model with a longitudinal push-over analysis are presented.

show abstract

“…Three methods are commonly employed to determine this: nonlinear time history, incremental dynamic, and capacity spectrum analyses, with time history analysis being the most commonly used tool (Banerjee and Shinozuka, 2007;Bignell et al, 2004;Shinozuka et al, 2000a;Mackie and Stojadinović, 2001;Kumar and Gardoni, 2014). Incremental dynamic analysis can also be used to determine the earthquake response of a structure and derive the fragility curve (Lu et al, 2004;Kurian et al, 2006;Liolios et al, 2011). Time history analysis gives more realistic results, but both time history and incremental dynamic analysis are time-consuming and computationally ex-pensive.…”

Section: Introductionmentioning

confidence: 99%

Seismic assessment of a multi-span steel railway bridge in Turkey based on nonlinear time history

Yilmaz

Caglayan²

2018

Nat. Hazards Earth Syst. Sci.

View full text Add to dashboard Cite

Abstract. Many research studies have shown that bridges are vulnerable to earthquakes, graphically confirmed by incidents such as the San Fernando (1971 USA), Northridge (1994 USA), Great Hanshin (1995 Japan), and Chi-Chi (1999 Taiwan) earthquakes, amongst many others. The studies show that fragility curves are useful tools for bridge seismic risk assessments, which can be generated empirically or analytically. Empirical fragility curves can be generated where damage reports from past earthquakes are available, but otherwise, analytical fragility curves can be generated from structural seismic response analysis. Earthquake damage data in Turkey are very limited, hence this study employed an analytical method to generate fragility curves for the Alasehir bridge. The Alasehir bridge is part of the Manisa-Uşak-Dumlupınar-Afyon railway line, which is very important for human and freight transportation, and since most of the country is seismically active, it is essential to assess the bridge's vulnerability. The bridge consists of six 30 m truss spans with a total span 189 m supported by 2 abutments and 5 truss piers, 12.5, 19, 26, 33, and 40 m. Sap2000 software was used to model the Alasehir bridge, which was refined using field measurements, and the effect of 60 selected real earthquake data analyzed using the refined model, considering material and geometry nonlinearity. Thus, the seismic behavior of Alasehir railway bridge was determined and truss pier reaction and displacements were used to determine its seismic performance. Different intensity measures were compared for efficiency, practicality, and sufficiency and their component and system fragility curves derived.

show abstract

Applicability of pushover analysis-based seismic performance evaluation procedure for steel arch bridges

Cited by 30 publications

References 15 publications

Pushover analysis for the seismic response prediction of cable-stayed bridges under multi-directional excitation

Pushover analysis for the seismic response prediction of cable-stayed bridges under multi-directional excitation

Seismic analyses of the Messina Bridge project

Seismic assessment of a multi-span steel railway bridge in Turkey based on nonlinear time history

Contact Info

Product

Resources

About