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|Title: ||SIMPLIFIED EARTHQUAKE ANALYSIS OF INTAKE-OUTLET TOWERS|
|Authors: ||CHOPRA, AK|
|Issue Date: ||1991|
|Publisher: ||ASCE-AMER SOC CIVIL ENG|
|Citation: ||JOURNAL OF STRUCTURAL ENGINEERING-ASCE, 117(3), 767-788|
|Abstract: ||A simplified procedure is presented to determine the maximum earthquake forces in intake-outlet towers directly from the design earthquake spectrum without the need for a response-history analysis. All the significant effects of tower-water interaction and tower-foundation-soil interaction are included in the analysis. The hydrodynamic effects of outside and inside water are approximately by added mass functions, which can be determined to a useful degree of accuracy without requiring regorous three-dimensional analysis of the two fluid domains. The simplified response spectrum analysis (SRSA) procedure utilizes convenient methods for computing: (1) The first two natural frequencies and modes of vibration of the tower; and (2) the modifications to the vibration period and the damping ratio of the fundamental vibration mode due to tower-foundation-soil interaction. The procedure is demonstrated to be accurate enough for preliminary design and safety evaluation of towers.|
|Appears in Collections:||Article|
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