日本公路桥梁抗震规范2002.pdf

2002 SEISMIC DESIGN SPECIFICATIONS FOR HIGHWAY BRIDGES by Shigeki UNJOH, Sho-ichi NAKATANI2), Kei-ichi TAMURA3) Jiro FUKUI4) and Jun-ichi HOSHIKUMA5)) ABSTRACT 1. INTRODUCTION This paper presents the revised Seismic Design Seismic design methods for highway bridges in Specifications of Highway Bridges, Japan Road Japan has been developed and improved based on Association (JRA), in 2002 [1]. The revised the lessons learned from the various past bitter specifications are based on the Performance-based experiences after the Great Kanto Earthquake Design Code Concept and the improved (M7.9) in 1923. By introducing the various knowledges on the seismic design methods for provisions for preventing serious damage such as highway bridges are also included. According to the design method against soil liquefaction, design the Performance-based Design Code Concept, the detailing including the unseating prevention design requirements are clearly specified and the devices, a number of highway bridges which existing detailed design methods including the suffered complete collapse of superstructures was analytical methods and the allowable limits are only a few in the recent past earthquakes. specified as verification methods and the However, the Hyogo-ken-Nanbu Earthquake of examples of acceptable solutions. The designers January 17, 1995, caused destructive damage to can modify or select other verifica