Theoretical study on earthquake response of a reinforced concrete chimney. [Paradise, KY]

Technical Report · Thu Jun 03 04:00:00 EDT 1976

OSTI ID:6970325

Yang, T Y; Shiau, L C; Lo, H

A detailed dynamic analysis, presented in a series of reports, was conducted on the seismic response and structural safety of key subsystems (steam generator, high pressure steam piping, coal handling equipment, cooling tower, chimney) of Unit no. 3 of TVA at Paradise, Kentucky in order to: (1) determine for the key components the natural frequencies below 50 Hz and the corresponding normal modes; (2) determine response of plant to seismic disturbances; (3) verify through full scale tests results obtained in (1) and determine estimates of damping needed in (2); (4) determine potential failure modes of major structural components; and (5) determine a spare parts policy for a power system so that outages due to damage from seismic disturbances are minimal. Analytical and experimental methods are used. Here, the chimney is modeled and its dynamic responses analyzed by modal superposition. Three assumed values of damping coefficients are applied to its two reinforced concrete shells, yielding data for various stress areas after application of 1940 El Centro earthquake parameters. Stress distribution around flue openings at the worst time is determined from quadrilateral sheet finite element data.

• Research Organization: Purdue Univ., Lafayette, Ind. (USA). School of Aeronautics and Astronautics
• OSTI ID: 6970325
• Report Number(s): PB-274820
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200104* -- Fossil-Fueled Power Plants-- Components
BUILDING MATERIALS
CONCRETES
DYNAMIC LOADS
EARTHQUAKES
FINITE ELEMENT METHOD
FOSSIL-FUEL POWER PLANTS
GROUND MOTION
MATERIALS
MOTION
NUMERICAL SOLUTION
POWER PLANTS
SEISMIC EFFECTS
SEISMIC EVENTS
STACKS
STRESS ANALYSIS
THERMAL POWER PLANTS