Seismic Investigation of RC Elevated Water Tank for Different Types of Staging Patterns
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International Journal of Engineering Trends and Technology (IJETT) |  |
| © 2014 by IJETT Journal | ||
| Volume-14 Number-1 |
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| Year of Publication : 2014 | ||
| Authors : Ankush N. Asati , Dr. Mahendra S.Kadu |
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 10.14445/22315381/IJETT-V14P202 |
Citation
Ankush N. Asati , Dr. Mahendra S.Kadu. "Seismic Investigation of RC Elevated Water Tank for Different Types of Staging Patterns", International Journal of Engineering Trends and Technology (IJETT), V14(1),4-7 Aug 2014. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group
Abstract
As known from past upsetting experiences, adequately designed elevated water tanks were heavily damaged or collapsed during earthquakes. This might be due to the lack of knowledge regarding the behaviour of supporting system of the tank; and also due to improper geometrical selection of staging patterns. For certain proportions of the tank and the structure, the sloshing of the water during earthquake may one of the dominant factor. In this paper, the seismic behavioural effect of elevated circular water tank is studied for constant capacity and constant number of columns; for various types of staging arrangement in plan, and variation in number of stages in elevation by using finite element method based software SAP2000. Two mass idealizations suggested by Gujarat State Disaster Management Authority (GSDMA) guideline are considered here. Total nine combinations were analysed using Response Spectrum Method (RSM) and results are presented. Radial arrangement with six staging levels is found to be best for ten numbers of columns.
References
(1) Chirag N. Patel, Burhan K. Kapetawala, FI. S. Patel (2013) "Influence of Frame Type Tapered Staging on Displacement of Elevated Water Tank", GIT-Journal of Engineering and Technology, Sixth volume, ISSN 2249-6157.
(2) George W. Housner (1963) "The dynamic behavior of water tanks" Bulletin of the Seismological Society of America. Vo1. 53, No. 2, pp. 381-387.
(3) IS: 11682-1985 "Criteria for design of RCC staging for overhead water tanks", Bureau of Indian Standards, New Delhi.
(4) IS: 1893-2002 (Part I) "Criteria for Earthquake Resistant Design of Structure", Bureau of Indian Standards, New Delhi.
(5) IS: 1893-2002 (Part II) "Criteria for Earthquake Resistant Design of Structure (Liquid Retaining Tanks)", Bureau of Indian Standards, New Delhi.
(6) Structural Analysis Program SAP2000. "User`s manual, Computers and Structures", Inc. Berkley, Calif.
(7) Sudhir K. Jain, O R, Jaiswal (2007) "IITK-GSDMA Guidelines for Seismic Design of Liquid Storage Tanks".
Keywords
Elevated water tank, Response spectrum analysis, SAP 2000, Two mass model.