NEHRP Clearinghouse
- Title
- Three-Dimensional Response of a Bridge Structure Subjected to Traveling Rayleigh Waves, SV-Waves, and P-Waves.
- File
- PB81103558.pdf
- Author(s)
- Werner, S. D.; Lee, L. C.
- Source
- National Science Foundation, Washington, DC. Engineering and Applied Science., May 1980, 208 p.
- Identifying Number(s)
- AA-R-7911-5008
- Abstract
- Results are reported of a research program which investigated the three-dimensional response of structures to spatially varying seismic excitations. A methodology, named CAST-1, was developed to analyze the three-dimensional response of a single-span bridge on an elastic half-space subjected to traveling Rayleigh waves, SV-waves, and P-waves with arbitrary excitation frequencies and angles of incidence. These analyses, when considered with those for SH-waves conducted earlier, show how the bridge response is influenced by each of the various types of seismic waves that propagate through an elastic half-space. Results from bridge analyses demonstrate that nonvertically incident seismic waves induce resonant responses that are different from those induced by vertically incident seismic waves. In addition, important non-resonant response characteristics are seen to be dependent on the wave type, excitation frequency, an the angles of horizontal and vertical incidence of the seismic waves.
- Keywords
- Bridges (Structures); Seismic waves; Mathematical models; Dynamic response; CAST-1 computer program; Computer programming; Soil structure interactions; Earthquakes; Dynamic structural analysis