Menu
Contact Us Search
Organization Title

Evaluation of Seismic Code Provisions Using Strong-Motion Building Records From the 1994 Northridge Earthquake

by Juan C. De la Llera and Anil K Chopra

De la Llera, Juan C., and Anil K Chopra (1995). Evaluation of Seismic Code Provisions Using Strong-Motion Building Records From the 1994 Northridge Earthquake. SMIP95 Seminar on Seismological and Engineering Implications of Recent Strong-Motion Data, p. 25 - 40.

Click on the link below for the full text:

PDF (Adobe PDF (SIZE 493 KB)) - Requires Adobe Acrobat Reader or other PDF viewer.


Abstract

In this investigation the recorded motions in eight buildings obtained during the 1994 Northridge earthquake are studied and used to evaluate seismic code provisions and conventional building analysis techniques. These motions are first subjected to signal processing techniques to identify important building properties such as vibration periods and story stiffnesses. Then, the recorded ground motion in each building is used, in conjunction with a linear model of the structure, to predict the dynamic response of the building. Such response is then compared with the recorded response in order to assess the uncertainty present in the modeling procedure. Besides, a recently proposed improved inelastic model, based on the use of ultimate story shear and torque surfaces, is used to predict the response of buildings and explain conceptually their seismic behavior. Finally, instrumentation and code issues are discussed in light of the results generated in this research.