Seismic Fragility Analysis of Multispan Continuous Girder Bridges with Varying Pier Heights considering Their Bond‐Slip Behavior

Cao, Yang; Liang, Yan; Huai, Chenzi; Yang, Ji Xin; Mao, Ruimin

doi:10.1155/2020/8869921

Cited by 7 publications

(3 citation statements)

References 25 publications

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“…Over the past years, studies on the seismic performance of continuous girder bridges have mostly focused on large-span, new technology continuous girder bridges and the vulnerability under spatial earthquakes. For example, Cao et al [4] investigated the seismic susceptibility of a multi-span continuous girder bridge considering the slip behavior of steel bars by using the incremental dynamic analysis (IDA) method. Similarly, based on numerical simulation and the IDA method, Yuen et al [5] studied the effect of prestress loss on the vulnerability of Post-tensioned Precast Concrete Segmental Bridges (PT-PCSB) under different ultimate states.…”

Section: Introductionmentioning

confidence: 99%

Seismic Vulnerability Analysis of Long-Span Prestressed Concrete Composite Box Girder Bridge with Corrugated Steel Webs under Construction

Wang¹,

Hao³

et al. 2023

Buildings

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In order to address the difficulty in determining the seismic damage probability of continuous girder bridges under construction, the seismic vulnerability analysis method of the construction state is proposed in this study. Firstly, taking a long-span prestressed concrete composite box girder bridge with corrugated steel webs (OSW) as an example, the finite element models (FEMs) of dynamic calculation in different phases of cantilever construction are simulated by OpenSEES. Secondly, by selecting reasonable seismic waves and seismic intensity measures, the non-linear time-history analysis is carried out, followed by the demand parameters and damage indexes suitable for the construction state proposed. Finally, the probabilistic seismic demand model (PSDA) of the continuous box girder bridge during the construction stage is constructed by using the “cloud method”, and the seismic vulnerability curves of the piers and temporary bearings are established to evaluate the seismic performance during the construction stage. The results indicate that the damage probability of piers and temporary bearings increases with the progress of construction. The initial formation of the cantilever structure and the sudden change in the size of the construction segmental girder correspond to a high probability of damage, and seismic protection measures should be strengthened during this construction state. Moreover, significantly higher damage probability of the components under construction compared to the completed bridge after it is built.

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Section: Introductionmentioning

confidence: 99%

Seismic Vulnerability Analysis of Long-Span Prestressed Concrete Composite Box Girder Bridge with Corrugated Steel Webs under Construction

Wang¹,

Hao³

et al. 2023

Buildings

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“…Pan et al [8] proposed a curve fitting method based on the damage index demand to capability ratio model to analyze the seismic vulnerability of New York continuous steel bridges. Cao et al [9] studied the seismic fragility of multispan continuous girder bridges with consideration of the bond-slip behavior using the IDA method. Relatively little research has been done on the seismic vulnerability of bridges during construction.…”

Section: Introductionmentioning

confidence: 99%

Construction Stage Seismic Vulnerability Evaluation of a Continuous Girder Bridge with the Cast‐in‐Place Cantilever Construction Method

Yong

Guo

2021

Advances in Civil Engineering

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To evaluate the vulnerability of bridges at various construction stages under the action of strong earthquakes, the incremental dynamic analysis (IDA) method is applied, and the vulnerabilities of a continuous girder case study bridge with the cast-in-place cantilever construction method, which owns five main construction stages, are evaluated and compared. The results show the following: With the increase in the peak ground acceleration (PGA), the vulnerabilities of bridges at different construction stages all increase. The fragility and vulnerability are mainly determined by the structural mechanical system condition and the mode shapes but not the modal frequency. For the working condition of seismic PGA of 0.4 g, (1) the bridge at the substructure construction stage may only experience slight or moderate damage with the exceedance probability of 8% to 5% and the mean loss ratio being only about 5%; (2) the vulnerabilities of bridges at the middle cantilever construction stage and the long cantilever construction stage are similar, the collapse damage exceedance probability is about 80%, and the mean loss ratio is about 65%; and (3) the vulnerabilities of bridges at the middle span closure construction stage and the bridge completion construction stage are nearly the same, the collapse damage exceedance probability is about 98%, and the mean loss ratio can reach 80%. The research results explore a new method for evaluating the vulnerability of bridges at different construction stages, which can provide suggestions for seismic damage defense and seismic insurance risk evaluation.

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“…Bukan hanya di Indonesia, menjabarkan gempa Northridge 1994 di Amerika Serikat, Gempa Kobe 1995 di Jepang, dan Wenchuan 2005 Gempa di China juga mengakibatkan rusaknya jembatan (Cao et al, 2020). Akibat rusaknya jembatan yang berfungsi sebagai sarana ransportasi akan memblokir lalu lintas dan bahkan mempengaruhi penyelamatan dan rekonstruksi setelah bencana.…”

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Studi Literatur: Pengaruh Gempa Terhadap Jembatan

Mardhiyah

Tarigan²,

Sitanggang³

2022

RADIAL

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Abstrak: Studi Literatur: Pengaruh Gempa Terhadap Jembatan. Kerusakan jembatan akibat gempa bumi menghasilkan kerusakan fisik dan efek ekonomi terhadap sistem transportasi. Faktor gempa bumi dalam memberikan efek kerusakan pada gempa dipengaruhi pula dengan variabel-variabel lainnya, diantaranya Metode, Bentuk Gelagar, Bahan Jembatan, Bentuk dan Panjang Bentang, serta Panjang Total Jembatan. Tujuan penelitian ini adalah untuk melihat perbedaan yang signifikan berdasarkan kriteria yang digunakan oleh penelitian sebelumnya melalui studi literatur hasil penelitian. Dalam penelitian ini akan dijabarkan, hasil-hasil penelitian yang dilakukan oleh peneliti sebelumnya yang dibagi berdasarkan enam variabel penelitian. Metode penelitian yang digunakan adalah metode kualitatif deskriptif. Tahapan penelitian ini dimulai dari pemilihan topik tujuan, mencari dan memilih artikel yang sesuai, menganalisis dan mensintesis litertur, serta mengorganisasikan penulisan argument. Berdasarkan studi literatur yang dilakukan pada keenam variabel penelitian, penjabaran terlengkap mengenai pengaruh gempa terhadap jembatan dijelaskan melalui variabel metode penelitian, bagian-bagian jembatan yang paling menerima pengaruh gempa adalah pilar serta gelagar jembatan. Hasil penelitian ini memberikan informasi bahwa terdapat variabel lainnya yang belum dijabarkan secara rinci sejauh apa pengaruhnya terhadap kerusakan jembatan sebagai akibat dari terjadinya gempa bumi. Merujuk hasil penelitian ini, maka analisis terhadap variabel lainnya sangat dibutuhkan dan berpotensi untuk memberikan hasil dan sudut pandang yang berbeda terkait faktor yang mempengaruhi kerusakan jembatan akibat gempa bumi. Abstract: Literature Study: Effect of Earthquake on Bridges. Damage to bridges during earthquakes results in physical damage and economic effects on the transportation system. The earthquake factor in giving the effect of damage to the earthquake is also influenced by other variables, including the method, the shape of the girder, the bridge material, the shape and length of the span, and the total length of the bridge. The purpose of this study was to see significant differences based on the criteria used by previous studies through a literature study of research results. In this study, the results of research conducted by previous researchers are divided based on six research variables. The research method used is descriptive qualitative method. The stages of this research start from selecting the topic of interest, finding and selecting appropriate articles, analyzing and synthesizing literature, and organizing argument writing. Based on the literature study conducted on the six research variables, the most complete description of the effect of the earthquake on the bridge is explained through the variables of the research method, the parts of the bridge that are most affected by the earthquake are the pillars and bridge girders. The results of this study provide information that there are other variables that have not been described in detail to what extent they affect bridge damage as a result of the earthquake. Referring to the results of this study, analysis of other variables is needed and has the potential to provide different results and perspectives regarding the factors that affect bridge damage due to earthquakes.

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Seismic Fragility Analysis of Multispan Continuous Girder Bridges with Varying Pier Heights considering Their Bond‐Slip Behavior

Cited by 7 publications

References 25 publications

Seismic Vulnerability Analysis of Long-Span Prestressed Concrete Composite Box Girder Bridge with Corrugated Steel Webs under Construction

Seismic Vulnerability Analysis of Long-Span Prestressed Concrete Composite Box Girder Bridge with Corrugated Steel Webs under Construction

Construction Stage Seismic Vulnerability Evaluation of a Continuous Girder Bridge with the Cast‐in‐Place Cantilever Construction Method

Studi Literatur: Pengaruh Gempa Terhadap Jembatan

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