Vulnerability Assessment of Coastal Structure: A Case Study on Light Houses

Vulnerability Assessment of Coastal Structure: A Case Study on Light Houses

Lighthouses are the road signs of the ocean. They guide sailors through dangerous waters. Each lighthouse design is based on the land it is built on, its purpose, and the technology available. The Geometry of the lighthouses is round, square, octagonal, or conical in shape. These lighthouses need to...

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Bibliographic Details
Published in:Journal of the Institution of Engineers (India). Series A, Civil, architectural, environmental and agricultural Engineering Vol. 98; no. 1-2; pp. 135 - 153
Main Authors: Chenna, Rajaram, Teegala, Ashwini Reddy, Kummara, Renuka Devi, Ramancharla, Pradeep Kumar
Format: Journal Article
Language:English
Published: New Delhi Springer India 01-06-2017
Springer Nature B.V
Subjects:
Civil Engineering
Coastal environments
Coastal structures
Damage
Earthquake construction
Earthquakes
Energy consumption
Energy dissipation
Engineering
Fragility
Lighthouses
Normalizing
Original Contribution
Sailors
Ships
Traffic signs
Lighthouse
Fragility curve
Nonlinear analysis
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Summary:Lighthouses are the road signs of the ocean. They guide sailors through dangerous waters. Each lighthouse design is based on the land it is built on, its purpose, and the technology available. The Geometry of the lighthouses is round, square, octagonal, or conical in shape. These lighthouses need to be in operation 24 × 7 guiding the ships coming towards the coast. However, these lighthouses got affected during past earthquakes. The main objective of this work is to perform the nonlinear time history analysis of Navadra, Kachchigadh and Dwaraka point lighthouses subjected to eight ground motions. Since most of the Gujarat state is under Zone-III, IV and V, the analysis is carried out by normalizing them to respective zone factors as suggested by Bureau of Indian Standards IS 1893 (part-1): 2002. Using energy dissipation approach, damage is quantified at every displacement level. A fragility curve has been developed to quantify the damage of the above lighthouses with respect to different peak ground accelerations. Based on the fragility analysis of lighthouses, the following conclusions are drawn. It is concluded that the damage of the Navadra lighthouse at Mandi, Jodiya and Jhangi is 0.2, 0.08 and 0.68 respectively.
ISSN:2250-2149
2250-2157
DOI:10.1007/s40030-017-0194-2