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Rajaram, Chenna
- Vulnerability Assessment of Marine Structures:A Case Study on Jetty
Abstract Views :231 |
PDF Views:158
Authors
Chenna Rajaram
1,
Ramancharla Pradeep Kumar
2,
Ajay Pratap Singh
3,
Kapil Mohan
3,
Bal Krishna Rastogi
3
Affiliations
1 Earthquake Engineering Research Centre, IIIT-Hyderabad, Hyderabad, IN
2 Department of Civil Engineering, Earthquake Engineering Research Centre, IIIT-Hyderabad, Hyderabad, IN
3 Institute of Seismological Research, Gujarat, IN
1 Earthquake Engineering Research Centre, IIIT-Hyderabad, Hyderabad, IN
2 Department of Civil Engineering, Earthquake Engineering Research Centre, IIIT-Hyderabad, Hyderabad, IN
3 Institute of Seismological Research, Gujarat, IN
Source
International Journal of Earth Sciences and Engineering, Vol 10, No 2 (2017), Pagination: 191-199Abstract
Jetties are one of the most important structures in the coastal area, which can be used for transporting large quantities of goods and raw materials from one place to the other. Their functionality is very much essential because they are lifeline structures of the country. It is observed during the past earthquakes that jetties have been damaged even under mild shaking. Damaged and unserviceable jetties cause delay of export and import business. It directly affects the economy of particular region in terms of business, employment and growth. This clearly indicates the need to design these facilities so that they can withstand natural disasters particularly earthquakes and tsunamis. In this paper, a study has been carried out to find out the damage (D) to the Jetty. The Jetty is modeled using 2D Applied Element Method (AEM) to perform damage analysis of structure. Pushover analysis is done to get base shear vs roof displacement of building using displacement control method. Using the dissipated energy approach, damage is quantified at every displacement level and normalized to 1. A fragility curve has been developed to quantify the damage of Jetty with respect to different peak ground accelerations. The damage values were calculated for the PGA values of KHF Mandvi, NKF Jodiya and KMF Jhangi and found that the Jetty got light damage (D=0.2), and moderate damage (D=0.38 and 0.42) respectively.Keywords
Jetty, Non-Linear Analysis, Fragility Curve, Damage.Full Text
- Correlation Between Building Damage, Ground Motion Parameters and Input Energy: A Novel Ranking Scheme Using Multivariate Analysis
Abstract Views :89 |
PDF Views:55
Authors
Affiliations
1 Department of Civil Engineering, Rajeev Gandhi Memorial College of Engineering and Technology, Nandyal 518 501, India., IN
2 Earthquake Engineering Research Centre, International Institute of Information Technology, Hyderabad 500 032, India., IN
1 Department of Civil Engineering, Rajeev Gandhi Memorial College of Engineering and Technology, Nandyal 518 501, India., IN
2 Earthquake Engineering Research Centre, International Institute of Information Technology, Hyderabad 500 032, India., IN
Source
Current Science, Vol 124, No 2 (2023), Pagination: 190-201Abstract
The present study describes the interdependency between earthquake ground motion parameters and seismic damage to various buildings. A novel ranking procedure between energy, damage and seismic risk has been proposed for buildings subjected to ground motions. Correlation analysis was done between damage to buildings, energy and total energy to confirm the trend of parameters and their influence on total energy ranking. It was found that high peak ground acceleration (PGA) or high energy alone may not lead to extensive damage to the buildings. However, they were affected by the predominant frequency, duration of ground motion and amplitude. A correlation study was performed using over 300 ground motions datasets. It was found that the seismic damage of low-rise buildings had a moderate correlation with root mean square acceleration, characteristic intensity, sustained maximum acceleration and effective design acceleration. Also, a weak correlation was observed between seismic damage of high-rise, tall buildings and (V/H)PGA, Arms. The damage and seismic risk rankings may help change Government policies for retrofitting buildings.Keywords
Buildings, Ground Motion Parameters, Multi-Variate Analysis, Seismic Risk.Full Text
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