Article
Geosciences, Multidisciplinary
Goutam Kashyap Boruah, Santanu Baruah, Sangeeta Sharma, Anurup Gohain Barua, Saurabh Baruah
Summary: An attempt has been made to estimate the site amplification factors of different geomorphological units in Shillong city, northeastern India, based on the distribution of peak ground acceleration (PGA) due to maximum credible earthquakes that originated in nearby major faults. The study found that the highly dissected land exhibited the maximum amplification, while the high plateau segment had the least amplification. Additionally, the effective ground motion on the surface increased with the magnitude of the earthquake.
JOURNAL OF EARTH SYSTEM SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Ebru Harmandar
Summary: This article assesses the seismic hazard of the Fethiye region through probabilistic seismic hazard analysis and generates hazard curves. These results will serve as a basis for future seismic risk mapping.
ACTA GEOLOGICA SINICA-ENGLISH EDITION
(2022)
Article
Engineering, Geological
Yan Zhang, Fabio Romanelli, Franco Vaccari, Antonella Peresan, Changsheng Jiang, Zhongliang Wu, Shanghua Gao, Vladimir G. Kossobokov, Giuliano F. Panza
Summary: This study conducted a first-order seismic zoning based on Neo-deterministic Seismic Hazard Assessment in the seismically active China Seismic Experimental Site area. The results indicated high seismic hazard in the region, particularly around main fault zones. This zoning findings may support preparedness actions and site-specific studies.
ENGINEERING GEOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Ravindra K. Gupta, Mohit Agrawal, S. K. Pal, M. K. Das
Summary: The Nirsa block, a coal mining area and industrial town situated at the border between Jharkhand and West Bengal in India, faces significant seismic risk. By characterizing the top surficial layers using ambient noise data, researchers found that the bedrock depth ranges from 2.7-19.5 meters and Vs30 values vary from 250-950 m/s, with fundamental resonance frequencies between 2-23 Hz. The study also revealed a good correlation between fundamental resonance frequency, peak HVSR amplitude, bedrock depth, and Vs30 values.
Article
Geosciences, Multidisciplinary
Yushi Wang, Yi Ding, Xiaojun Li
Summary: The scaling ratios for spectral accelerations (Sa) under different site condition classifications were quantified through an integrated approach. This approach incorporated scaling ratios for peak ground acceleration, scaling ratios for PGA-normalized Sa, and non-linear decay exponents, which were derived from a combination of recent studies, numerical simulations, and observation data. The resulting scaling ratios for Sa provide more reliable and reasonable estimates of the seismic site effect in China.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Environmental Sciences
Ravindra K. Gupta, Mohit Agrawal, Rashid Shams, S. K. Pal
Summary: We conducted one dimensional equivalent linear site response analysis on 11 soil profiles in Dhanbad city. Shear wave velocity models obtained from destructive and non-destructive surveys were used to examine the impact of subsoil on earthquakes at the ground surface. The results revealed the composition of alluvium deposits in Dhanbad city, such as silty sand, sandy clay, silt + sand, and sand + clay mixture. The findings provide valuable insights for Indian government agencies to mitigate earthquake effects and build a resilient society.
ENVIRONMENTAL EARTH SCIENCES
(2023)
Article
Geochemistry & Geophysics
Sheri Molnar, Thomas Foulon, Hema Sharma, Martin Ross, Michel Parent
Summary: Charlevoix, Quebec, the most seismically active region in eastern Canada, has significant earthquake site effect potential. Through single-station microtremor measurements and seismic array testing, researchers have studied the seismic site conditions and material properties in the Du Gouffre and Malbaie river valleys, and identified differences in their geological features.
SEISMOLOGICAL RESEARCH LETTERS
(2023)
Article
Engineering, Geological
Junju Xie, Kewei Li, Xiaojun Li, Zhao An, Pengfei Wang
Summary: Classification of engineering sites is essential for seismic fortification in seismic design codes. This study aims to develop a consistent VS30-based site classification method for Chinese sites, allowing the connection with international communities and the utilization of well-established models. Through data analysis, it is found that the VS30 parameter is effective in differentiating Chinese site classes, leading to the development of a new classification method.
ENGINEERING GEOLOGY
(2023)
Article
Environmental Sciences
Dalia Munaff Naji, Muge K. Akin, Ali Firat Cabalar
Summary: This study presents a seismic site classification map for Kahramanmaras city in southern-central Turkey using geophysical tests, following NEHRP standards. The obtained data from field studies and measurements were used to describe subsurface conditions and classify seismic sites. The results show that the study area is predominantly categorized as soil site class C, with smaller areas classified as soil site class D and B.
ENVIRONMENTAL EARTH SCIENCES
(2021)
Article
Multidisciplinary Sciences
Saleh Qaysi, Hassan Alzahrani, Kamal Abdelrahman
Summary: The study indicates that the Al-Sokhna area is prone to frequent seismic activity, which may affect the construction of an electric power plant. Multiple earthquake prone zones were identified within a 300 km radius, highlighting the need for earthquake-resistant structures in the design process.
JOURNAL OF KING SAUD UNIVERSITY SCIENCE
(2021)
Article
Geosciences, Multidisciplinary
Thanop Thitimakorn, Rungroj Arjwech, Sasikan Kupongsak
Summary: The shear-wave velocity (Vs) of soils in Nakhon Nayok City, Central Thailand were determined using the Multi-Channel Analysis of Surface Wave technique. The results showed that the city has NEHRP site classes C, D, and E, with soil class C found in the north and most of the residential area positioned on soil classes D and E. The amplification value of the soil in the study area ranged from 1.4 to 3.9, with higher values in the central and southwestern parts which consist of soft sediments.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Engineering, Geological
Khalid Mahmood, Bakht Zamin, Shahid Iqbal, Zia-Ur-Rehman, Sher Afzal, Muhammad Safdar, Qaiser Iqbal, Arshad Ali
Summary: This study evaluates the impact of local site conditions on seismic hazard and provides improved and site-specific values of ground acceleration for the new Balakot town in Pakistan.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2022)
Article
Engineering, Civil
Yin Cheng, Jianfeng Wang, Yingbin Zhang, Fabrizio Mollaioli
Summary: This study develops a correlation model to consider the joint consideration of multiple intensity measures (IMs) in earthquake engineering applications. The results show a strong correlation between the spectral amplitudes at the same period, and the correlation decreases as the period difference increases. This model can explicitly consider the ground motion characteristics in earthquake engineering applications.
JOURNAL OF EARTHQUAKE ENGINEERING
(2023)
Article
Geosciences, Multidisciplinary
Saikat Kuili, Ravi S. Jakka
Summary: This study addresses the uncertainty problem in seismic site classification by implementing stochastic approaches. An approximate method and two simulation approaches are utilized to obtain reliable seismic site classes. Field measurements from high strain soil tests are used to estimate the necessary parameters, resulting in 324 seismic site class outcomes. The study highlights the data scatter in routine geotechnical investigations and proposes a novel methodology for reliable seismic site classification.
Article
Engineering, Geological
John D. Thornley, Utpal Dutta, John Douglas, Zhaohui (Joey) Yang
Summary: The use of HVSR in characterizing sites and its relationship with VS30 has been studied extensively. This study compared measured VS30 and HVSR results in Anchorage, Alaska, developed a regional model, and created a VS30 contour map for the city incorporating data from various sources.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2021)
Article
Engineering, Geological
Jitesh T. Chavda, Soumyaranjan Mishra, Goudappa R. Dodagoudar
INTERNATIONAL JOURNAL OF PHYSICAL MODELLING IN GEOTECHNICS
(2020)
Article
Engineering, Geological
N. Aarthi, G. R. Dodagoudar
Summary: Strength characteristics of loose to medium dense sand deposits can be improved by using sand compaction piles (SCPs), as validated by laboratory tests and finite element analysis. By varying the properties of the sand deposit and geometrical parameters of the SCP, the ultimate bearing capacity can be increased, demonstrating the effectiveness of SCPs in enhancing the settlement response.
INTERNATIONAL JOURNAL OF GEOMECHANICS
(2021)
Article
Materials Science, Multidisciplinary
Vaibhav R. Chate, Vinayak G. Mutalik Desai, G. R. Dodagoudar, Jose Roberto Guimaraes, Raviraj M. Kulkarni
Summary: The development of Titania decorated on graphene oxide nano-sheets (TiO2-GO-N) and its characterization were conducted with various techniques. Experimental results showed that the highest photocatalytic efficiency of nearly 92% for the initial Congo red dosage of 15 x 10(-3) mmol/l was observed at a pH of 4.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Engineering, Geological
B. S. Deviprasad, Ramanandan Saseendran, G. R. Dodagoudar
Summary: This study conducted a reliability analysis of a bridge pier with a rocking shallow foundation using the Monte Carlo simulation technique. The influence of the bridge pier's performance level on the failure probability was considered. The results showed that the bridge pier-RSF system suffered minimal damage during a moderate earthquake and effectively enhanced the seismic performance during a strong earthquake.
INTERNATIONAL JOURNAL OF GEOMECHANICS
(2022)
Review
Green & Sustainable Science & Technology
Akshay Sakhare, Hafsa Farooq, Sanjay Nimbalkar, Goudappa R. Dodagoudar
Summary: This study investigates the behavior of an integral abutment bridge with the transition zone subjected to train loading. The results indicate that the thickness of the transition zone and the material properties of the backfill have a greater effect on the overall track response.
Article
Engineering, Geological
Jitesh T. Chavda, Goudappa R. Dodagoudar
Summary: In this study, 1g model tests were conducted to investigate the load-penetration response and soil flow mechanism around the cutting edge of a circular open caisson. The results provide important insights into the interaction between the cutting edge and soil during the sinking operation.
INTERNATIONAL JOURNAL OF PHYSICAL MODELLING IN GEOTECHNICS
(2022)
Article
Engineering, Geological
Jitesh T. Chavda, G. R. Dodagoudar
Summary: This study evaluates the bearing capacity factors of the cutting face of open caissons using finite element method. Different configurations of the cutting edge, soil properties, and depth of sinking are taken into consideration. The results are presented in ready-to-use charts and tables for design purposes.
INTERNATIONAL JOURNAL OF GEOTECHNICAL ENGINEERING
(2022)
Article
Engineering, Geological
B. S. Deviprasad, Ramanandan Saseendran, G. R. Dodagoudar
Summary: This study conducts a fragility analysis of the bridge pier-RSF system using the Monte Carlo simulation technique. The results show that the system is more vulnerable to damage under pulse-type ground motions.
BULLETIN OF EARTHQUAKE ENGINEERING
(2022)
Article
Engineering, Geological
Divya Priya Balasubramani, G. R. Dodagoudar
Summary: In this study, a 3D site characterisation model is developed to evaluate the spatial variability of corrected SPT 'N' values in the subsurface of Chennai City. It is found that the ordinary kriging method provides more accurate estimates compared to the simple kriging method. The estimated values can help in interpreting subsurface information and making informed decisions for future development and management of Chennai City.
GEOMECHANICS AND GEOENGINEERING-AN INTERNATIONAL JOURNAL
(2022)
Article
Engineering, Geological
Jitesh T. Chavda, G. R. Dodagoudar
Summary: This study examines the variation of bearing capacity factors of ring footings with different inner and outer radius ratios using finite element analysis. Guidelines are provided on the proper choice of ultimate bearing capacity equation, the effects of Young's modulus and Poisson's ratio, and the dependency of N-gamma' on the width of ring footing. An ultimate bearing capacity equation for ring footings is proposed based on observations from FE results and the expressions of circular and strip footings.
INTERNATIONAL JOURNAL OF GEOTECHNICAL ENGINEERING
(2021)
Proceedings Paper
Engineering, Civil
B. Divya Priya, G. R. Dodagoudar
APPLICATIONS OF GEOMATICS IN CIVIL ENGINEERING
(2020)
Article
Engineering, Geological
V Sundaravel, G. R. Dodagoudar
INTERNATIONAL JOURNAL OF GEOSYNTHETICS AND GROUND ENGINEERING
(2020)
Article
Engineering, Civil
Ramanandan Saseendran, G. R. Dodagoudar
GEOMECHANICS AND ENGINEERING
(2020)
Article
Engineering, Civil
B. S. Deviprasad, G. R. Dodagoudar
GEOMECHANICS AND ENGINEERING
(2020)
Article
Engineering, Geological
Adarsh S. Chatra, G. R. Dodagoudar, V. B. Maji
INTERNATIONAL JOURNAL OF GEOTECHNICAL ENGINEERING
(2019)