The probabilistic seismic assessment of aged concrete arch bridges: The role of soil-structure interaction

Homaei, Farshad; Yazdani, Mahmoud

doi:10.1016/j.istruc.2020.09.038

Cited by 26 publications

(4 citation statements)

References 48 publications

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“…Masonry unit and mortar is considered as a homogenized domain in the macro modelling [19]. When the literature is reviewed, it can be seen that macro-modelling was used to model full-scale historical structures because of its low computational effort [20][21][22][23].…”

Section: Description Of the Bridge And Structural Analysismentioning

confidence: 99%

Dynamic Analysis of Historical Masonry Arch Bridges under Different Earthquakes: The Case of Murat Bey Bridge

YILMAZ

Sayın

Özmen

2022

Turkish Journal of Science and Technology

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Historical structures which are cultural heritage have been frequently damaged or ruined because of unexpected events such as earthquakes. Masonry arch bridges constitute a significant part of historical structures. In this study, the single-span Murat Bey Bridge in the province of Kütahya, built in 1460, was selected as a numerical application. Three dimensional finite element model of the bridge was generated with SAP2000 finite element program. The dynamic characteristics of the bridge were obtained by modal analysis method. Firstly, static analysis of the bridge under its own weight was carried out. Then, time-history analysis method was used for seismic evaluation of the bridge. For this purpose, the acceleration records of the 1998 Adana, 2003 Bingöl, 2011 Van and 2020 Elazığ earthquakes were taken into consideration. As a result of the dynamic analyses carried out, the displacement and stress graphs occurring on the bridge were examined. The highest displacement and stress values on the historical bridge were obtained from the acceleration records of the 2011 Van earthquake.

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Section: Description Of the Bridge And Structural Analysismentioning

confidence: 99%

Dynamic Analysis of Historical Masonry Arch Bridges under Different Earthquakes: The Case of Murat Bey Bridge

YILMAZ

Sayın

Özmen

2022

Turkish Journal of Science and Technology

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“…Yapılan analizlerde ANSYS sonlu elemanlar programını kullanmışlardır. Homaei ve Yazdani [16], yaptıkları çalışmada tarihi kemerli beton demiryolu köprülerinde yapı zemin etkileşiminin dikkate alındığı durumda yapının sismik tepkilerinin nasıl değiştiğini araştırmışlardır. Dinamik analizlerde artımsal dinamik analiz metodunu kullanmışlardır.…”

Section: Introductionunclassified

Farklı Sönüm Tipleri Altında Tarihi Yığma Köprülerin Sismik Tepkilerinin Değerlendirilmesi

AKIN

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Özmen

2022

Fırat Üniversitesi Mühendislik Bilimleri Dergisi

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Öz: Tarihi yapıların kültürel mirasımız içinde önemi büyüktür. Kültürel ve yapısal anlamda büyük öneme sahip mühendislik yapılarından biride tarihi yığma köprülerdir. Bu köprüler, geçmişten günümüze kadar önemini yitirmeden gelen, insanlığa ulaşım açısından büyük kolaylıklar sağlayan yapılardır. Tarihi yapıların korunması ve onarılması için yapılacak olan çalışmalarda bu yapıların yapısal davranışları belirlenmelidir. Bu çalışmada, tarihi yığma bir köprünün farklı sönüm tipleri altında sismik tepkisi incelenmiştir. Bu amaçla kütle orantılı sönüm, rijitlik orantılı sönüm ve Rayleigh sönümü dikkate alınmıştır. Sayısal örnek olarak tek açıklıklı tarihi yığma bir köprü seçilmiştir. Köprünün sonlu eleman modeli üç boyutlu katı elemanlarla oluşturulmuştur. Dinamik analizler için SAP2000 sonlu elemanlar programı kullanılmıştır. Köprünün bulunduğu konumda dikkate alınarak dinamik analizler için 1992 Tunceli depreminin ivme kayıtları kullanılarak farklı sönüm tipleri altında köprünün sismik tepkisi değerlendirilmiştir.

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“…In recent times, seismic assessment has been essential for post-earthquake [1] and pre-earthquake decision-making analysis [2]. The seismic analysis is fundamental for network capacity management [3] and post-earthquake repair [4]. In civil engineering structures, the use of structural control systems is an increasing trend [5], where the reason for applying structural control systems is to decrease the structural vibrations to provide a comfortable and safe life to people [6].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Analysis of Soil-Structure Interaction using Ensemble-based Modified Ant Lion Optimization Algorithm

Ramaiah¹,

Kumar²

2022

Int. J. Adv. Sci. Eng. Inf. Technol.

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In recent decades, the analysis of dynamic characteristics of Soil-Structure Interaction (SSI) has become an emerging research topic, where the SSI is defined as the structure's motion and the soil's response. The SSI is an important problem in solid and monstrous structures, which are built on delicate ground that changes the dynamic properties of the structures. The main objective of this research article is to propose an ensemble machine-learning algorithm for predicting the dynamic response and characteristics of SSI problems. After collecting the data from 57 structures, the data pre-processing is accomplished using Min-Max Normalization (MMN) and Max Normalization (MN) techniques that superiorly rescale the unstructured data for better prediction. Further, the data optimization is carried out using the Modified Ant Lion Optimization (MALO) algorithm that effectively optimizes the dimensionality of the data, where this process reduces the computational complexity and improves the prediction accuracy of dynamic characteristics in SSI modeling. Finally, the optimized data is given as the input to the ensemble classifier, which is a combination of Support Vector Machine (SVM) and ID3 for classifying the dynamic characteristics related to SSI, which are period Lengthening (PL), Super Structure Acceleration (SSA) and Pile Head Acceleration (PHA). The simulation results confirmed that the ensemble-based MALO algorithm improved performance in predicting the dynamic response and characteristics of SSI problems by error value. Whereas the proposed algorithm, on average, reduced 0.01-to-0.5 error value compared to the existing machine learning algorithms.

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The probabilistic seismic assessment of aged concrete arch bridges: The role of soil-structure interaction

Cited by 26 publications

References 48 publications

Dynamic Analysis of Historical Masonry Arch Bridges under Different Earthquakes: The Case of Murat Bey Bridge

Dynamic Analysis of Historical Masonry Arch Bridges under Different Earthquakes: The Case of Murat Bey Bridge

Farklı Sönüm Tipleri Altında Tarihi Yığma Köprülerin Sismik Tepkilerinin Değerlendirilmesi

Dynamic Analysis of Soil-Structure Interaction using Ensemble-based Modified Ant Lion Optimization Algorithm

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