An overview of an experimental program for testing large reinforced concrete shear walls
The Seismic Category I Structures Program is being carried out at the Los Alamos National Laboratory under sponsorship of the US Nuclear Regulatory Commission (NRC), Office of Nuclear Regulatory Research. In the class of structure being investigated, the primary lateral load-resisting structural element is the reinforced concrete shear wall. Previous results from microconcrete models indicated that these structures responded to seismic excitations with initial frequencies that were reduced by factors of 2 or more over those calculated based on an uncracked cross-section strength-of-materials approach. Furthermore, though the structures themselves were shown to have sufficient reserve margins, the equipment and piping are designed to response spectra that are based on uncracked cross-sectional member properties, and these spectra may not be inappropriate for actual building responses. The current phase of the program is aimed at verification of these conclusions using conventional concrete structures to demonstrate that previous microconcrete results can be scaled to prototype structures. A new configuration of a shear wall structure was designed and tested to investigate the analytical-experimental differences observed during the previous model testing. Shear wall height-to-length aspect ratios were to vary from 1 to 0.25. Percentage steel ratios were to vary from 0.25% to 0.6% by area, in both horizontal and vertical directions. The test structures are shown in Fig. 1. TRG-1 and -2 were constructed with microconcrete. TRG-3, -4, -5, and -6 were constructed with conventional (19-mm aggregate) concrete. 11 refs., 4 figs.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 5960449
- Report Number(s):
- LA-UR-89-1120; CONF-890855-7; ON: DE89009250
- Resource Relation:
- Conference: 10. international conference on Structural Mechanics in Reactor Technology (SMIRT), Anaheim, CA, USA, 14-18 Aug 1989; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
Similar Records
The Seismic Category 1 Structures Program: Results for FY 1985
The Seismic Category 1 Structures Program
Related Subjects
36 MATERIALS SCIENCE
42 ENGINEERING
NUCLEAR POWER PLANTS
SEISMIC EFFECTS
REINFORCED CONCRETE
MECHANICAL PROPERTIES
STRESSES
DYNAMICS
WALLS
ASPECT RATIO
BENDING
CRACKS
DAMPING
DEFORMATION
EXPERIMENTAL DATA
MECHANICAL TESTS
REACTOR SAFETY
SHEAR
STRUCTURAL MODELS
BUILDING MATERIALS
CONCRETES
DATA
INFORMATION
MATERIALS
MATERIALS TESTING
MECHANICS
NUCLEAR FACILITIES
NUMERICAL DATA
POWER PLANTS
REINFORCED MATERIALS
SAFETY
TESTING
THERMAL POWER PLANTS
220900* - Nuclear Reactor Technology- Reactor Safety
360603 - Materials- Properties
420200 - Engineering- Facilities
Equipment
& Techniques