NEHRP Clearinghouse
- Title
- Dynamic Soil-Structure Interaction.
- File
- PB81144503.pdf
- Author(s)
- Shye, K. Y.; Robinson, A. R.
- Source
- National Science Foundation, Washington, DC. Engineering and Applied Science., September 1980, 113 p.
- Identifying Number(s)
- ['UILU-ENG-80-2018', 'STRUCTURAL RESEARCH SER-484']
- Abstract
- The report provides a method for a simple extension of response-spectrum procedures in seismic building analysis to include dynamic soil-structure interaction. The analysis utilizes soil impedance functions for a structural foundation. Most of the computational results refer to a rigid mat foundation. The damping that arises in a soil-structure system will generally be nonclassical. A rapid approximate scheme is developed for computing nonclassical modes of a soil-structure system. The computation, which is extremely effective, uses a classical mode of the structure with its base fixed. The differences of the initial and improved modes give direct measures of the significance of the interaction effects. The response-spectrum approach, which is the most reasonable and convenient for the case of classical damping, is found to be applicable to a soil-structure system, including the nonclassical damping that is present. Several examples are presented to demonstrate the capability of the solution method.
- Keywords
- Earthquake resistant structures; Seismic waves; Equations of motion; Damping; Dynamic response; Ground motion; Earthquake engineering; Finite element analysis; Soil dynamics; Soil structure interactions; Soil mechanics