NEHRP Clearinghouse
- Title
- Performance of Masonry-Infilled R/C Frames under In-Plane Lateral Loads.
- File
- PB95174025.pdf
- Author(s)
- Mehrabi, A. B.; Shing, P. B.; Schuller, M. P.; Noland, J. L.
- Source
- National Science Foundation, Arlington, VA., October 1994, 272 p.
- Identifying Number(s)
- CU/SR-94/6
- Abstract
- A comprehensive study has been conducted to evaluate the safety of existing masonry infilled reinforced concrete structures under earthquake loadings. Fourteen 1/2-scale frame specimens were tested to evaluate the influence of the relative strength and stiffness of an infill with respect to those of the bounding frame, the lateral load history, the panel aspect ratio, the magnitude and distribution of vertical loads, and the adjacent infilled bays on the performance of these structures. The experimental results show that the addition of infill panels results in a major improvement in the strength and energy-dissipation capability of these frames. The test results have been extrapolated to obtain the dynamic properties of the prototype structure and, thereby, to study its performance under seismic loadings. The results have demonstrated a remarkable improvement of structural performance due to the infill.
- Keywords
- Infilled panels; Reinforced concrete; Lateral loads; Prototypes; Displacement; Shear stresses; Cyclic loads; Masonry; Finite element method; Failure modes; Strain gages; Stress strain relations; Structural failure; Algorithms; Earthquake damage; Concrete structures; Cracks; Structural components; Wall loading; Structural analysis; Cracking (Fracturing); Frames; Dynamic response; Earthquake engineering