NEHRP Clearinghouse
- Title
- Semi-Empirical Analysis of Strong-Motion Peaks in Terms of Seismic Source, Propagation Path and Local Site Conditions.
- File
- PB93150266.pdf
- Author(s)
- Kamiyama, M.; O'Rourke, M. J.; Flores-Berrones, R.
- Source
- National Science Foundation, Washington, DC.; New York State Science and Technology Foundation, Albany., September 9, 1992, 168 p.
- Identifying Number(s)
- NCEER-92-0023
- Abstract
- The purpose of the report is to derive a new type of semi-empirical expression for scaling strong-motion peaks in terms of seismic source, propagation path and local site conditions. Peak acceleration, peak velocity and peak displacement are analyzed in a similar fashion because they are interrelated. However emphasis is placed on the peak velocity which is a key ground motion parameter for lifeline earthquake engineering studies. With the help of seismic source theories, the semi-empirical model is derived using strong motions obtained in Japan. In the derivation, statistical considerations are used in the selection of the model itself and the model parameters. Earthquake magnitude M and hypocentral distance r are selected as independent variables and the dummy variables are introduced to identify the amplification factor due to individual local site conditions. The resulting semi-empirical expressions for the peak acceleration, velocity and displacement are then compared with strong-motion data observed during three earthquakes in the U.S. and Mexico.
- Keywords
- ; Sites; Seismic waves; Regression analysis; Displacement; Mathematical models; Magnitude; Soil pressure; Strains; Comparison; Mexico; Seismology; United States; Ground motion; Earthquake engineering; Wave propagation; Velocity measurement; Accelerometers; Earthquakes