BART SEISMIC RETROFIT ENVIRONMENTAL ASSESSMENT

By J. MITII

CONTENTS EXECUTIVE SUMMARY EARTHQUAKE INPUT LINEAR RESPONSE ANALYSIS NONLINEAR RESPONSE ANALYSIS OBSERVATIONAL EVIDENCE SEISMIC PERFORMANCE CRITERIA INTRODUCTION THE HAZARD OF DAMS SEISMIC SAFETY OF CONCRETE DAMS SCOPE OF THE REPORT EARTHQUAKE EXCITATION CONCEPTS PRESENT STATUS OF KNOWLEDGE STATUS OF STRONG-MOTION INSTRUMENT NETWORKS RESEARCH NEEDS ANALYSIS OF LINEAR RESPONSE PRELIMINARY COMMENTS STATIC ANALYSIS DYNAMIC ANALYSIS PRESENT KNOWLEDGE AND CAPABILITIES NONLINEAR ANALYSIS AND RESPONSE BEHAVIOR CHARACTERISTICS OF NONLINEAR BEHAVIOR MATERIAL MODELS AND RESPONSE ANALYSIS CRITERIA FOR SAFETY EVALUATION SUMMARY OF RECENT RESEARCH EXPERIMENTAL AND OBSERVATIONAL EVIDENCE EARTHQUAKE EXPERIENCE FIELD VIBRATION TESTS: FORCED AND AMBIENT MODEL TESTS RECOMMENDED CRITERIA FOR EVALUATING SEISMIC PERFORMANCE BACKGROUND PRELIMINARY CONSIDERATIONS GUIDELINES FOR EVALUATING RESULTS FROM LINEAR ANALYSES GUIDELINES FOR EVALUATING RESULTS FROM NONLINEAR ANALYSES GUIDELINES FOR EVALUATING FOUNDATION STABILITY STABILITY FOLLOWING FAULT DISPLACEMENT EVALUATION OF CRITERIA REFERENCES