scholarly journals Assessment of Urban Physical Seismic Vulnerability Using the Combination of AHP and TOPSIS Models: A Case Study of Residential Neighborhoods of Mymensingh City, Bangladesh

2018 ◽  
Vol 06 (02) ◽  
pp. 165-183 ◽  
Author(s):  
Md. Shaharier Alam ◽  
Shamim Mahabubul Haque
Keyword(s):  
Seismic Vulnerability

Seismic Vulnerability of Individual Housing: Case Study

2021 ◽  
pp. 127-135
Author(s):  
Mashrap Akhmedov ◽  
Rustam Abirov
Keyword(s):  
Seismic Vulnerability ◽  
Individual Housing

scholarly journals Seismic vulnerability of historic masonry buildings: a case study in the center of Lucca

2018 ◽  
Vol 11 ◽  
pp. 169-176 ◽  
Author(s):  
Sonia Boschi ◽  
Andrea Borghini ◽  
Barbara Pintucchi ◽  
Nicola Zani
Keyword(s):  
Seismic Vulnerability ◽  
Masonry Buildings ◽  
Historic Masonry

Research on seismic vulnerability of buildings and seismic disaster risk: A case study in Yancheng, China

2020 ◽  
Vol 45 ◽  
pp. 101477
Author(s):  
Junxue Zhou ◽  
Sha Li ◽  
Gaozhong Nie ◽  
Xiwei Fan ◽  
Yan Deng ◽  
...  
Keyword(s):  
Seismic Vulnerability ◽  
Disaster Risk ◽  
Vulnerability Of Buildings ◽  
Seismic Disaster

scholarly journals Seismic vulnerability of traditional masonry building a case study of Byasi, Bhaktapur

2017 ◽  
Vol 4 ◽  
pp. 24-30
Author(s):  
Shyam Sundar Basukala ◽  
Prem Nath Maskey
Keyword(s):  
Seismic Vulnerability ◽  
Linear Time ◽  
Fragility Curves ◽  
Time History ◽  
Masonry Building ◽  
Masonry Buildings ◽  
Masonry Structures ◽  
Rapid Visual Screening ◽  
Visual Screening

Historic buildings of Nepal are mainly constructed from masonry structure. Since masonry structures are weak in tension which leads to the failure of structure. So, to avoid possible damage in environment lives and property it is urgent to conduct vulnerability assessments. Seismic vulnerability of historic masonry buildings constructed in Bhaktapur at Byasi area is carried out for the case study. Five load bearing masonry buildings were selected out of 147 buildings considering opening percentage, storey and type of floor for modeling in SAP 2000 V10 Various methods of rapid visual screening (FEMA 154, EMS 98) are used to determine the vulnerability of the selected building. The Selected Building response is carried out by linear time history analysis. The seismic vulnerability of masonry structures is determined in terms of fragility curves which represent the probability of failure or damage due to various levels of strong ground motions for different damage state slight, moderate, extensive and collapse. From the result of Rapid Visual Screening (RVS) and Fragility curves of the buildings it is found that whole, buildings are found vulnerable from future earthquake.

Seismic vulnerability of domes: a case study

2018 ◽  
Vol 13 (5) ◽  
pp. 679-689 ◽  
Author(s):  
Concetta Cusano ◽  
Claudia Cennamo ◽  
Maurizio Angelillo
Keyword(s):  
Seismic Vulnerability

scholarly journals Performance of Logistic Regression and Support Vector Machines for Seismic Vulnerability Assessment and Mapping: A Case Study of the 12 September 2016 ML5.8 Gyeongju Earthquake, South Korea

2019 ◽  
Vol 11 (24) ◽  
pp. 7038 ◽  
Author(s):  
Jihye Han ◽  
Soyoung Park ◽  
Seongheon Kim ◽  
Sanghun Son ◽  
Seonghyeok Lee ◽  
...  
Keyword(s):  
Logistic Regression ◽  
South Korea ◽  
Vulnerability Assessment ◽  
Seismic Vulnerability ◽  
Spatial Databases ◽  
Support Vector ◽  
Seismic Vulnerability Assessment ◽  
The Common ◽  
Gyeongju Earthquake

In this study, we performed seismic vulnerability assessment and mapping of the ML5.8 Gyeongju Earthquake in Gyeongju, South Korea, as a case study. We applied logistic regression (LR) and four kernel models based on the support vector machine (SVM) learning method to derive suitable models for assessing seismic vulnerabilities; the results of each model were then mapped and evaluated. Dependent variables were quantified using buildings damaged in the 9.12 Gyeongju Earthquake, and independent variables were constructed and used as spatial databases by selecting 15 sub-indicators related to earthquakes. Success and prediction rates were calculated using receiver operating characteristic (ROC) curves. The success rates of the models (LR, SVM models based on linear, polynomial, radial basis function, and sigmoid kernels) were 0.652, 0.649, 0.842, 0.998, and 0.630, respectively, and the prediction rates were 0.714, 0.651, 0.804, 0.919, and 0.629, respectively. Among the five models, RBF-SVM showed the highest performance. Seismic vulnerability maps were created for each of the five models and were graded as safe, low, moderate, high, or very high. Finally, we examined the distribution of building classes among the 23 administrative districts of Gyeongju. The common vulnerable regions among all five maps were Jungbu-dong and Hwangnam-dong, and the common safe region among all five maps was Gangdong-myeon.

Probabilistic Assessment of a 70-Year Old Pipeline Subject to Seismic Deformation

2006 ◽  
Author(s):  
Robert W. Warke ◽  
James D. Hart ◽  
Ben H. Thacker
Keyword(s):  
Seismic Vulnerability ◽  
Limit State ◽  
Probabilistic Assessment ◽  
Weld Joints ◽  
Natural Gas Pipeline ◽  
Flaw Sizing ◽  
Probability Estimates ◽  
Seismic Deformation ◽  
State Functions

This paper presents an assessment case study on several segments of buried natural gas pipeline constructed in 1936 with ‘bell-bell-chill ring’ (BBCR) style girth weld joints, and currently operating in a seismically active region of North America. Seismic vulnerability was evaluated in terms of girth weld fracture and plastic collapse probabilities for specified hazards of varying severity and likelihood. Monte Carlo simulations performed in NESSUS® provided failure probability estimates from distributed inputs based on PIPLIN deformation analyses, nondestructive and destructive flaw sizing, residual stress measurements, weld metal tensile and CTOD tests, and limit state functions based on published stress intensity and collapse solutions.

scholarly journals Assessment of the Peak Response of a 5MW HAWT Under Combined Wind and Seismic Induced Loads

2017 ◽  
Vol 11 (1) ◽  
pp. 441-457 ◽  
Author(s):  
Alberto Maria Avossa ◽  
Cristoforo Demartino ◽  
Francesco Ricciardelli
Keyword(s):  
Wind Turbines ◽  
Large Scale ◽  
Seismic Vulnerability ◽  
Specific Model ◽  
Demand Model ◽  
Horizontal Axis Wind Turbine ◽  
Ground Acceleration ◽  
Peak Response ◽  
Wind Actions

Background and Objective:The rapid growth of the wind energy industry has brought the construction of large-scale wind turbines with the aim of increasing their performance and profits to areas characterized by high seismic hazard. Previous research demonstrated the seismic vulnerability of large-scale wind turbines when seismic and wind actions are considered simultaneously in the demand model. In this study, the response of the supporting structure of a land-based horizontal axis wind turbine under the combined effects induced by wind and earthquake is presented.Method:Using a decoupled approach, numerical simulations of the wind and seismic loads effects are performed separately using a specific model for the aerodynamic damping and then joined. Both simulations are done using free open-source software that are FAST simulating the aerodynamic response of the rotor and OpenSees simulating the dynamic behaviour of the tower. The fitted generalized extreme value distributions of the multi-hazard peak response in terms of base moment and shear, total drift, and top rotation are calculated for different seismic and wind load intensities by means of Monte Carlo simulations. The analyses are referred to the specific case study of a land-based wind generator.Results and Conclusion:The maximum demand is associated with the operational rated scenario and for high values of the peak ground acceleration, only the parked condition leads to larger values of the response if compared to others. The analyses showed that it is essential to consider the combined seismic and wind actions in the demand model to derive a complete multi-risk analysis of the land-based structures.

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