Showing papers by "Charles R. Farrar published in 1990"

Static load cycle testing of a low-aspect-ratio four-inch wall, TRG-type structure, TRG-5-4 (1. 0, 0. 56)

Abstract: This report is the second in a series of test reports that details the quasi-static cyclic testing of low height-to-length aspect ratio reinforced concrete structures The test structures were designed according to the recommendations of a technical review group for the US Nuclear Regulatory Commission sponsored Seismic Category I Structures Program The structure tested and reported here had 4-in-thick shear and end walls, and the elastic deformation was dominated by shear The background of the program and previous results are given for completeness Details of the geometry, material property tests, construction history, ultrasonic testing, and modal testing to find the undamaged dynamic characteristics of the structures are given Next, the static test procedure and results in terms of stiffness and load deformation behavior are given Finally, results are shown relative to other known results, and conclusions are presented 33 refs, 140 figs, 13 tabs

Static load cycle testing of a very low-aspect-ratio six-inch wall TRG-type structure TRG-6-6 (0. 27, 0. 50)

Abstract: This test report is the third for a series of tests carried out by the Los Alamos National Laboratory under the sponsorship of the United States Nuclear Regulatory Commission's Division of Engineering. This research program has a Technical Review Group that recommended test geometries and sizes for the tests. The quasi-static load cycle testing of a totally shear-dominated structure (bending deformation negligible) made of 6-inch-thick reinforced concrete walls is reported herein. The background of the program and the results that led to this series of experiments is first reviewed for continuity. Next, the geometry of the test structure, the design parameters, and the construction of the structure, including the material property tests, are reported. Both modal analysis and modal testing were done to verify the undamaged dynamic properties of the structure. Finally, the results of the quasi-static cyclic testing are reported in detail. Results are compared with other investigations and with the American Concrete Institute (ACI) 349-85 code predictions. 25 refs., 32 figs., 6 tabs.