Pub Date : 2023-03-31DOI: 10.1142/s1793431123500148
Maryam Ziaadini-Dashtekhaki, M. Ghaeini-Hessaroeyeh, S. Hamzehei-Javaran
{"title":"Numerical Investigation of Reducing Wave Propagation Hazard Utilizing an Appropriate Vegetation Area","authors":"Maryam Ziaadini-Dashtekhaki, M. Ghaeini-Hessaroeyeh, S. Hamzehei-Javaran","doi":"10.1142/s1793431123500148","DOIUrl":"https://doi.org/10.1142/s1793431123500148","url":null,"abstract":"","PeriodicalId":50213,"journal":{"name":"Journal of Earthquake and Tsunami","volume":"73 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86400577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-17DOI: 10.1142/s1793431123500100
Batuhan Aykanat, Esin Erturk, A. Altunışık, Mehmet Emin Aslan
{"title":"Field Investigation on Reinforced Concrete and Masonry Buildings Damages after November 23, 2022 Golyaka (Duzce) Earthquake","authors":"Batuhan Aykanat, Esin Erturk, A. Altunışık, Mehmet Emin Aslan","doi":"10.1142/s1793431123500100","DOIUrl":"https://doi.org/10.1142/s1793431123500100","url":null,"abstract":"","PeriodicalId":50213,"journal":{"name":"Journal of Earthquake and Tsunami","volume":"33 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81410728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Multi-Point-Source Describing Large Earthquake Based on Rupture Process Inversion and Image Segmentation","authors":"Jie Wang, Yuan-yuan Liang, Qingwen Sun, Xingmei Zhang, Liang Wang, Shuang Wu, Xiaohan Li, Haitao Yin","doi":"10.1142/s1793431123500112","DOIUrl":"https://doi.org/10.1142/s1793431123500112","url":null,"abstract":"","PeriodicalId":50213,"journal":{"name":"Journal of Earthquake and Tsunami","volume":"34 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84383155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-07DOI: 10.1142/s1793431123500045
A. K. Roy, Tanmoy Konar, A. Ghosh
Pulse-type-near-fault (P-N) earthquake ground excitations can inflict serious damage to structures in built-up areas situated close to seismic faults. The high frequency content, high velocity pulses of long period, and fling effects cause P-N motions to impose large demands on both stiff and flexible structures. Among various passive control devices, the liquid column damper (LCD) is economical and its effectiveness is well-established for flexible structures under far-field earthquake ground motions. In this paper, the compliant form of the LCD (CLCD), which was specially developed to overcome the nonapplicability of the conventional LCD to stiff structures, is investigated for the vibration control of both stiff and flexible structures subjected to P-N ground motions. The study is carried out both in the frequency and in the time domain. Results indicate that the CLCD is successful in mitigating structural response to P-N ground motions. Some of the trends of response reduction with damper parameters are found to be different from those earlier reported for far-field earthquakes. Interestingly, in the case of flexible structures, while the CLCD is found to be fairly effective, the conventional LCD is rendered practically ineffective.
{"title":"Mitigation of Structural Vibrations Due to Pulse-Type-Near-Fault Earthquake by the Compliant Liquid Column Damper","authors":"A. K. Roy, Tanmoy Konar, A. Ghosh","doi":"10.1142/s1793431123500045","DOIUrl":"https://doi.org/10.1142/s1793431123500045","url":null,"abstract":"Pulse-type-near-fault (P-N) earthquake ground excitations can inflict serious damage to structures in built-up areas situated close to seismic faults. The high frequency content, high velocity pulses of long period, and fling effects cause P-N motions to impose large demands on both stiff and flexible structures. Among various passive control devices, the liquid column damper (LCD) is economical and its effectiveness is well-established for flexible structures under far-field earthquake ground motions. In this paper, the compliant form of the LCD (CLCD), which was specially developed to overcome the nonapplicability of the conventional LCD to stiff structures, is investigated for the vibration control of both stiff and flexible structures subjected to P-N ground motions. The study is carried out both in the frequency and in the time domain. Results indicate that the CLCD is successful in mitigating structural response to P-N ground motions. Some of the trends of response reduction with damper parameters are found to be different from those earlier reported for far-field earthquakes. Interestingly, in the case of flexible structures, while the CLCD is found to be fairly effective, the conventional LCD is rendered practically ineffective.","PeriodicalId":50213,"journal":{"name":"Journal of Earthquake and Tsunami","volume":"22 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85372045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-06DOI: 10.1142/s1793431123500070
Yanyan Yu, H. Ding, Yue Zhu, Yi Luo
{"title":"Method for Determining Effective Frequency Range of Coherency Based on Seismic Energy","authors":"Yanyan Yu, H. Ding, Yue Zhu, Yi Luo","doi":"10.1142/s1793431123500070","DOIUrl":"https://doi.org/10.1142/s1793431123500070","url":null,"abstract":"","PeriodicalId":50213,"journal":{"name":"Journal of Earthquake and Tsunami","volume":"8 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72735087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-06DOI: 10.1142/s1793431123500082
S. Yaghmaei‐Sabegh, Shabnam Neekmanesh
{"title":"Non-parametric seismic fragility curves of SDOF systems based on a clustering process","authors":"S. Yaghmaei‐Sabegh, Shabnam Neekmanesh","doi":"10.1142/s1793431123500082","DOIUrl":"https://doi.org/10.1142/s1793431123500082","url":null,"abstract":"","PeriodicalId":50213,"journal":{"name":"Journal of Earthquake and Tsunami","volume":"50 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88535777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-06DOI: 10.1142/s1793431123500094
Guo-huan Liu, Xinyang Li
{"title":"Theoretical solutions for variable ground motions of media-transition canyons with partly filled water subjected to SV-waves incidence","authors":"Guo-huan Liu, Xinyang Li","doi":"10.1142/s1793431123500094","DOIUrl":"https://doi.org/10.1142/s1793431123500094","url":null,"abstract":"","PeriodicalId":50213,"journal":{"name":"Journal of Earthquake and Tsunami","volume":"1 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75857342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-15DOI: 10.1142/s1793431123500069
Xi Zhao, Hua Liu, Zhiyuan Ren, Yunpeng Jiang
The Manila trench in the South China Sea (SCS) is identified as being most susceptible to the future major earthquakes. Once a submarine earthquake occurs, the coastal areas and ocean engineering projects around SCS will be affected. Based on the Sanya new airport project, this paper presents an analysis of tsunami impacts to the project region. A series of numerical simulations of tsunami are carried out and compared under different magnitudes of earthquakes. An extreme tsunami induced by a giant earthquake of M9.3 is simulated and analyzed in detail. The tsunami propagation scenarios and surface elevation in the region are presented. The inundation map and flow velocity distribution are analyzed. The impacts of this human project to the coasts are discussed by comparing tsunami wave height with and without the artificial island. According to the numerical results and relevant analysis, the giant tsunami will have great impacts to the artificial island.
{"title":"Analysis of the Extreme Tsunami Risk to Sanya New Airport in the South China Sea","authors":"Xi Zhao, Hua Liu, Zhiyuan Ren, Yunpeng Jiang","doi":"10.1142/s1793431123500069","DOIUrl":"https://doi.org/10.1142/s1793431123500069","url":null,"abstract":"The Manila trench in the South China Sea (SCS) is identified as being most susceptible to the future major earthquakes. Once a submarine earthquake occurs, the coastal areas and ocean engineering projects around SCS will be affected. Based on the Sanya new airport project, this paper presents an analysis of tsunami impacts to the project region. A series of numerical simulations of tsunami are carried out and compared under different magnitudes of earthquakes. An extreme tsunami induced by a giant earthquake of M9.3 is simulated and analyzed in detail. The tsunami propagation scenarios and surface elevation in the region are presented. The inundation map and flow velocity distribution are analyzed. The impacts of this human project to the coasts are discussed by comparing tsunami wave height with and without the artificial island. According to the numerical results and relevant analysis, the giant tsunami will have great impacts to the artificial island.","PeriodicalId":50213,"journal":{"name":"Journal of Earthquake and Tsunami","volume":"41 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78597250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-11-25DOI: 10.1142/s179343112350001x
P. Nimisha, B. Jayalekshmi, K. Venkataramana
The violent dynamic behavior of liquid under horizontal excitation is a key factor that needs to be addressed in the seismic-resistant design of liquid tanks. Therefore, this study focuses on the slosh response of the liquid medium in a rectangular tank under Imperial Valley 1979, El Centro 1940 and Kobe 1995 ground motions of different frequency ranges. The ground motions records are selected based on the PGA/PGV ratio. For slosh control, a single vertical perforated baffle plate is used as an anti-slosh element with different configurations of perforations. Considering the free surface elevation as the major response parameter, the effect of percentage of perforation of the baffle plate, clear spacing of perforations and offset distance of the perforated plate are investigated by carrying out the pressure-based transient analysis using computational fluid dynamic (CFD). The optimum perforation varies from 10% to 17%, corresponding to the frequency of ground motion in the range of far-resonant to near-resonant conditions. Additionally, “rapid zone” ([Formula: see text]-zone) and “moderate zone” ([Formula: see text]-zone) are identified to pilot the positioning of the perforated baffle plate in liquid tanks. The perforated baffle plate with an optimum range of moderately spaced perforations positioned at the moderate zone of the tank effectively reduces the free surface elevation. Furthermore, the perforated baffle plate is more advantageous during violent sloshing under near-resonant conditions.
液体在水平激励下的剧烈动力行为是储液罐抗震设计中需要考虑的关键因素。因此，本文重点研究了Imperial Valley 1979、El Centro 1940和Kobe 1995三种不同频率范围的地震动作用下矩形槽内液体介质的晃动响应。根据PGA/PGV比值选择地面运动记录。为了控制晃动，使用单个垂直穿孔挡板作为具有不同穿孔配置的防晃动元件。以自由面高程为主要响应参数，采用计算流体力学(CFD)方法，研究了挡流板穿孔百分数、穿孔间隙和穿孔板偏移距离对挡流板变形的影响。最佳射孔率范围为10% ~ 17%，对应于远共振到近共振条件下的地震动频率。此外，还确定了“快速区”([公式:见文]-区域)和“中等区”([公式:见文]-区域)，以指导液罐中穿孔挡板的定位。在水箱的中等区域，穿孔挡板的最佳间距适中，有效地降低了自由表面标高。此外，在近共振条件下，穿孔挡板在剧烈晃动中更有利。
{"title":"Effect of Frequency Content of Seismic Excitation on Slosh Response of Liquid Tank with Baffle Plate","authors":"P. Nimisha, B. Jayalekshmi, K. Venkataramana","doi":"10.1142/s179343112350001x","DOIUrl":"https://doi.org/10.1142/s179343112350001x","url":null,"abstract":"The violent dynamic behavior of liquid under horizontal excitation is a key factor that needs to be addressed in the seismic-resistant design of liquid tanks. Therefore, this study focuses on the slosh response of the liquid medium in a rectangular tank under Imperial Valley 1979, El Centro 1940 and Kobe 1995 ground motions of different frequency ranges. The ground motions records are selected based on the PGA/PGV ratio. For slosh control, a single vertical perforated baffle plate is used as an anti-slosh element with different configurations of perforations. Considering the free surface elevation as the major response parameter, the effect of percentage of perforation of the baffle plate, clear spacing of perforations and offset distance of the perforated plate are investigated by carrying out the pressure-based transient analysis using computational fluid dynamic (CFD). The optimum perforation varies from 10% to 17%, corresponding to the frequency of ground motion in the range of far-resonant to near-resonant conditions. Additionally, “rapid zone” ([Formula: see text]-zone) and “moderate zone” ([Formula: see text]-zone) are identified to pilot the positioning of the perforated baffle plate in liquid tanks. The perforated baffle plate with an optimum range of moderately spaced perforations positioned at the moderate zone of the tank effectively reduces the free surface elevation. Furthermore, the perforated baffle plate is more advantageous during violent sloshing under near-resonant conditions.","PeriodicalId":50213,"journal":{"name":"Journal of Earthquake and Tsunami","volume":"84 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84041995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-11-11DOI: 10.1142/s1793431123500021
A. Habib, U. Yildirim
Base isolation systems have attained significant advancements over the past several decades, with new technologies being developed to enhance the performance of structures when subjected to moderate and severe seismic excitations. The multi-stage friction pendulum is among the most efficient systems owing to its broad range of effective pendula with several regimes that provide excellent energy dissipation abilities. Lately, a new generation of friction pendulum bearings called “Quintuple Friction Pendulum” was introduced to the literature and has since gained the attention of researchers. This isolator’s most significant advantages are the results of its capability to achieve multi-stage adaptive behavior which shows high energy dissipation capability from structures exposed to horizontal forces. Indeed, investigations that outlined the process for nonlinear modeling of structures supported on this type of isolation system are scarce. Thus, this research is intended to illustrate and discuss the approach for developing seismic code compliance finite element models for designing and analyzing reinforced concrete moment frames supported on quintuple friction pendulum bearings for nonlinear response-history analysis in OpenSees and SAP2000. As a part of the study, the nonlinearity of the isolation system and the superstructure will be considered. Moreover, the methods for overcoming essential issues such as damping leakage and isolator’s stiffness correction will be discussed. In general, the results of the discussed numerical examples have shown that both finite element packages are capable of achieving QFP hysteresis behavior as well as computing similar superstructural responses. Furthermore, the illustrated method of overcoming damping leakage provided reliable outcomes compared to the theoretical expectations. As well as the suggested approach for correcting the isolator’s initial stiffness was helpful in terms of accurately capturing the structure’s periods.
{"title":"Modeling Reinforced Concrete Moment Frames Supported on Quintuple Friction Pendulum Bearings for Nonlinear Response History Analysis","authors":"A. Habib, U. Yildirim","doi":"10.1142/s1793431123500021","DOIUrl":"https://doi.org/10.1142/s1793431123500021","url":null,"abstract":"Base isolation systems have attained significant advancements over the past several decades, with new technologies being developed to enhance the performance of structures when subjected to moderate and severe seismic excitations. The multi-stage friction pendulum is among the most efficient systems owing to its broad range of effective pendula with several regimes that provide excellent energy dissipation abilities. Lately, a new generation of friction pendulum bearings called “Quintuple Friction Pendulum” was introduced to the literature and has since gained the attention of researchers. This isolator’s most significant advantages are the results of its capability to achieve multi-stage adaptive behavior which shows high energy dissipation capability from structures exposed to horizontal forces. Indeed, investigations that outlined the process for nonlinear modeling of structures supported on this type of isolation system are scarce. Thus, this research is intended to illustrate and discuss the approach for developing seismic code compliance finite element models for designing and analyzing reinforced concrete moment frames supported on quintuple friction pendulum bearings for nonlinear response-history analysis in OpenSees and SAP2000. As a part of the study, the nonlinearity of the isolation system and the superstructure will be considered. Moreover, the methods for overcoming essential issues such as damping leakage and isolator’s stiffness correction will be discussed. In general, the results of the discussed numerical examples have shown that both finite element packages are capable of achieving QFP hysteresis behavior as well as computing similar superstructural responses. Furthermore, the illustrated method of overcoming damping leakage provided reliable outcomes compared to the theoretical expectations. As well as the suggested approach for correcting the isolator’s initial stiffness was helpful in terms of accurately capturing the structure’s periods.","PeriodicalId":50213,"journal":{"name":"Journal of Earthquake and Tsunami","volume":"126 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84971405","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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