美国桥梁抗震规范 中英文对照 翻译稿 NCHRP 12-49 ComprehensiveSpecification for the Seismic Design of Bridges Revised LRFDDesign Specifications (Seismic Provisions) TRANSPORTATION RESEARCH BOARD NAS-NRC PRIVILEGED DOCUMENT This report, not released forpublication, is furnished only for review to members or participants in the work of the National Cooperative Highway Research Program. It is to be regarded as fully privileged, and dissemination of the information included herein must be approved by the NCHRP. THIRD DRAFT OF SPECIFICATIONS ANDCOMMENTARY March 2, 2000
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