Restrainer Design Preocedures for Multi-Span Simply-Supported Bridges

摘要

The 1971 San Fernando Earthquake in California caused highway bridges to collapse211u001ebecause of excessive longitudinal movement at expansion joints and supports. 211u001eSince then, the California Department of Transportation (Caltrans) has installed 211u001elongitudinal cable restrainers to prevent such collapse. In the study presented 211u001ein this report, two existing design methods, the Caltrans and AASHTO methods, 211u001ewere evaluated for simply-supported bridges. In addition, three new design 211u001emethods for restrainers were proposed and evaluated. The adequacy of the design 211u001emethods was determined using nonlinear response history analyses of a large