- Author
- Cheok, G. S. | Stone, W. C. | Lew, H. S.
- Title
- Partially Prestressed and Debonded Precast Concrete Beam-Column Joints.
- Coporate
- National Institute of Standards and Technology, Gaithersburg, MD
- Book or Conf
- U.S./Japan Joint Technical Coordinating Committee. Precast Seismic Structural Systems. 3rd Meeting. Fourth (4th) Phase of the UJNR Panel on Wind and Seismic Effects Large Scale Test Program. (JTCC-PRESS). November 18-20, 1992, San Diego, CA, 1-9 p., 1992
- Keywords
- joints | scale models | tests | precast concrete | boundary conditions | beam cross sections | failure mode | displacement ductility | connection strength | energy absorption
- Abstract
- The experimental test results from three 1/3-scale model precast concrete beam-to-column connections is summarized. These tests are part of a multi-phased test program being conducted at the National Institute of Standards and Technology. The objective of the test program is to develop guidelines for an economical precast beam-to-colum connection for regions of high seismicity. The test specimens were interior connections designed using the Uniform Building Code [ICBO, 1985 and 1988] criteria for seismic Zones 2 and 4 as design guidelines. Partially debonded strands were employed in two of the specimens and while the third combined low strength steel with post-tensioning steel. Specimens were subjected to reversed cyclic loading according to a prescribed displacement history. Comparisons are made between the behavior of these precast specimens with previous precast and monolithic specimens which were tested earlier. The comparisons were based on connection strength, connection ductility, and energy absorption characteristics.