Seismic Performance of RCC Elevated Liquid Storage Tank

Authors

  • Rahul Paikrao

Abstract

As compared to other Civil Engineering structures elevated liquid storage tank is the 2nd most vulnerable structure under earthquake excitation, reason is more the flexibility and more the mass causes the longer time periods. In most of the cases it is almost equal to or up to 4 seconds. This paper compares the seismic analysis of Intz, Circular and Rectangular shape elevated liquid storage tanks of capacity 250m3 in accordance with IS: 1893- (Part-2) 2014. To study the effect of shape on seismic performance of elevated liquid storage tank (assumed liquid as water). The analysis is carried out for elevated liquid storage tanks of shape Circular, Intz and Rectangular in seismic Zone-IV and  Zone-V and on three different soil types i.e (hard rock, medium soil, soft soil) with two different tank-fill conditions - tank full and tank empty. Further, three different staging heights are also considered in this study. A Programme is formulated in Microsoft Excel software package using IS: 1893- (Part-2) 2014 and GSDMA (Gujarat State Disaster Management Authority) guidelines given by IIT Kanpur. The parameters of comparison include natural time period, lateral stiffness, base shear, base moment at the base of staging, vertical ground acceleration, hydrodynamic pressure, sloshing wave height. The present study will be helpful to Civil Engineers to understand the effect of container shape on seismic performance of elevated liquid storage tanks.

References

George W. Housner, (1963) “The Dynamic Behaviour of Water Tank” Bulletin of the Seismological Society of America. Vol. 53, No. 2, pp. 381-387.

W.H.Boyce,(1973) “Vibration test on simple water tower” , SWCEE ,Rome, Italy, vol-1-pp. 220-225

Jain Sudhir K.,Sameer U.S.,(1990) “Seismic design of frame staging for elevated water tank” 9th Symposium on earthquake

engineering (9SEE-90), Roorkey, December 14-16, Vol-1., pp. 4.114-4.120.

Sudhir K. Jain and M. S. Medhekar, (1993) “Proposed provisions for a seismic design of liquid storage tanks” Journals of structural engineering Vol.-20, No.-03.

Sudhir K Jain & Sajjed Sameer U,(1993) “ A review of requirements in Indian codes for a seismic design of elevated water tanks” bridge and structural engineer Vol-XXIII .No 01.

IS 1893 (part -2):2014

IITK-GSDMA guidelines for seismic design of liquid storage tanks.

Jai Krishna and A.R.Chandrashekharan elements of earthquake Engineering.

Suchita Hirde, Asmita Bajare, Manoj Hedaoo – (2011) “Seismic performance of elevated water tanks”. International Journal of Advanced Engineering Research and Studies IJAERS, Vol. I, Issue I ,2011, pp.78-87.

Suchita K.Hirde, U.L.Raygandhi-shaha-(2015) “Seismic behaviour of rc elevated service reservoirs supported on frame type staging and shaft type staging” Journal of Structural Engineering. Vol. 42, No. 4, October - November 2015 pp. 78-84.

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Published

2020-03-05

Issue

Vol. 7 No. 1 (2020)

Section

Research Article

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