Seismic Performance Evaluation of Urban Bridge using Static Nonlinear Procedure, Case Study: Hafez Bridge

Nicknam, Ahmad; Mosleh, Araliya; Hamidi, Hamed

doi:10.1016/j.proeng.2011.07.296

Cited by 6 publications

(4 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nonlinear analyses, especially dynamic analysis, are considered to be reliable and powerful tools in civil engineering practices [47][48][49][50][51]. In nonlinear modeling, beam and column elements were modeled using displacement-based fiber-section as shown in Figure 9.…”

Section: Modeling and Analysismentioning

confidence: 99%

Effect of intensity measures on the response of a 3D-structure under different ground motion duration

Rajabnejad

Hamidi

Naseri

et al. 2021

IJE

View full text Add to dashboard Cite

Section: Modeling and Analysismentioning

confidence: 99%

Effect of intensity measures on the response of a 3D-structure under different ground motion duration

Rajabnejad

Hamidi

Naseri

et al. 2021

IJE

View full text Add to dashboard Cite

“…Bridge damages produce both direct and indirect losses that can be extremely high (Padgett and DesRoches 2007). During the past decades several bridges damaged due to the occurrence of earthquakes (Eshghi and Ahari 2005;Eshghi and Razzaghi 2004;Ellingwood et al 2004;Nicknam et al 2011;Wang and Lee 2009;Yang et al 2015). Hence, the expected seismic performance of bridges attracted several researchers during the last decades (Jara et al 2011(Jara et al , 2013Varum et al 2011;Zhang et al 2008;Lin et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Seismic fragility analysis of typical pre-1990 bridges due to near- and far-field ground motions

Mosleh

Razzaghi

Jara

et al. 2016

Int J Adv Struct Eng

View full text Add to dashboard Cite

Bridge damages during the past earthquakes caused several physical and economic impacts to transportation systems. Many of the existing bridges in earthquake prone areas are pre-1990 bridges and were designed with out of date regulation codes. The occurrences of strong motions in different parts of the world show every year the vulnerability of these structures. Nonlinear dynamic time history analyses were conducted to assess the seismic vulnerability of typical pre-1990 bridges. A family of existing concrete bridge representative of the most common bridges in the highway system in Iran is studied. The seismic demand consists in a set of far-field and nearfield strong motions to evaluate the likelihood of exceeding the seismic capacity of the mentioned bridges. The peak ground accelerations (PGAs) were scaled and applied incrementally to the 3D models to evaluate the seismic performance of the bridges. The superstructure was assumed to remain elastic and the nonlinear behavior in piers was modeled by assigning plastic hinges in columns. In this study the displacement ductility and the PGA are selected as a seismic performance indicator and intensity measure, respectively. The results show that pre-1990 bridges subjected to near-fault ground motions reach minor and moderate damage states. Keywords Concrete bridges Á Seismic vulnerability Á Time history analysis Á Fragility curves Á Far-field Á Near-fault & Araliya Mosleh

show abstract

“…Bridge Corresponding author, Ph.D., E-mail: araliya.mosleh@ua.pt service interruptions may lead to loss of lives and/or economic losses during or after an earthquake event (Sheikh and Tsang 2011, Venkittaraman 2013, Wang et al 2013. During the past decades, several bridges have been damaged due to the occurrence of earthquakes or other natural disaster (Eshghi and Razzaghi 2004, Nicknam et al 2011, Wang and Lee 2009. Hence, the study of the expected seismic performance of bridges has attracted the attention of several researchers and research groups during the last decades (Jara et al 2013a, Jara et al 2013b, Varum et al 2011, Zhang et al 2008.…”

Section: Introductionmentioning

confidence: 99%

Development of fragility curves for RC bridges subjected to reverse and strike-slip seismic sources

Mosleh¹,

Razzaghi²,

Jara³

et al. 2016

Earthquakes and Structures

View full text Add to dashboard Cite

This paper presents a probabilistic fragility analysis for two groups of bridges: simply supported and integral bridges. Comparisons are based on the seismic fragility of the bridges subjected to accelerograms of two seismic sources. Three-dimensional finite-element models of the bridges were created for each set of bridge samples, considering the nonlinear behaviour of critical bridge components. When the seismic hazard in the site is controlled by a few seismic sources, it is important to quantify separately the contribution of each fault to the structure vulnerability. In this study, seismic records come from earthquakes that originated in strike-slip and reverse faulting mechanisms. The influence of the earthquake mechanism on the seismic vulnerability of the bridges was analysed by considering the displacement ductility of the piers. An in-depth parametric study was conducted to evaluate the sensitivity of the bridges' seismic responses to variations of structural parameters. The analysis showed that uncertainties related to the presence of lap splices in columns and superstructure type in terms of integral or simply supported spans should be considered in the fragility analysis of the bridge system. Finally, the fragility curves determine the conditional probabilities that a specific structural demand will reach or exceed the structural capacity by considering peak ground acceleration (PGA) and acceleration spectrum intensity (ASI). The results also show that the simply supported bridges perform consistently better from a seismic perspective than integral bridges and focal mechanism of the earthquakes plays an important role in the seismic fragility analysis of highway bridges.

show abstract

Seismic Performance Evaluation of Urban Bridge using Static Nonlinear Procedure, Case Study: Hafez Bridge

Cited by 6 publications

References 10 publications

Effect of intensity measures on the response of a 3D-structure under different ground motion duration

Effect of intensity measures on the response of a 3D-structure under different ground motion duration

Seismic fragility analysis of typical pre-1990 bridges due to near- and far-field ground motions

Development of fragility curves for RC bridges subjected to reverse and strike-slip seismic sources

Contact Info

Product

Resources

About