NEHRP Clearinghouse
- Title
- Cyclic Loading Tests of Masonry Single Piers. Volume 3. Height to Width Ratio of 0.5.
- File
- PB301321.pdf
- Author(s)
- Hidalgo, P. A.; Mayes, R. L.; McNiven, H. D.; Clough, R. W.
- Source
- National Science Foundation, Washington, DC., May 1979, 154 p.
- Identifying Number(s)
- UCB/EERC-79/12
- Abstract
- This report presents the results of eighteen cyclic, in-plane shear tests on fixed ended masonry piers having a height to width ratio of 0.5. These eighteen tests form part of a test program consisting of eighty single pier tests. Previous reports have presented the results of forty-five piers having height to width ratios of 2 and 1 and a subsequent report will present the test results of the remaining seventeen piers. The test setup was designed to simulate, insofar as possible, the boundary conditions the piers would experience in a perforated shear wall of a complete building. Each test specimen was a full scale pier 40 inches high and 80 inches wide. Three types of masonry construction were used; a hollow concrete block and a hollow clay brick type that used an 8 inch wide unit, and a double wythe grouted core clay brick, 10 inch thick wall, that consisted of two wythes 3 1/2 inches thick and a 3 inch grouted core. The variable included in the investigation was the quantity of horizontal reinforcement. All of the piers were fully grouted. The resuls are presented in the form of hysteresis envelopes, graphs of stiffness degradation, energy dissipation and shear distortion, and tabulated data on the ultimate strength and hysteresis indicators. A discussion of these test results is presented but no definitive conclusions are offered. These will be included in a final report at the completion of the eighty tests.
- Keywords
- Masonry; Seismic design; Supports; Buildings; Earthquake engineering; Shear tests; Cyclic loads; Piers; Loads (Forces); Earthquakes; Dynamic structural analysis