Workshop on Earthquake Site Response and Seismic Code Provisions

1992年11月18-20日，南加州大学，“地震现场反应和地震规范规定”研讨会的目的是研究场地反应对地震地面运动的影响；其目的是为修改现有的地震现场反应设计准则和规范提出建议。它延续了1991年在纽约大学布法罗分校举行的现场效果研讨会。本次研讨会由美国国家科学基金会、美国国家地震工程研究中心（NCEER）、美国地质调查局（USGS）和南加州地震中心（SCEC）。审查建筑规范中使用的土壤类别和场地因素（S因素）的需要源于：(a)对现有场地因素定义的关注，以及(b)现行建筑规范条款（即土壤因素S1至S3）是在1970年代中期制定的（S4是在1985年墨西哥地震后添加的）。近年来关于现场反应效应的广泛研究数据和新知识的积累进一步强调了举办这次研讨会的必要性。它得到参与下列工作的委员会的大力支持：(a) 1994年计划修订《国家减少地震危险方案》（NEHRP）关于制定新建筑物地震条例的建议条款；(b)加州结构工程师协会（SEAOC） 1993年计划修订的“蓝皮书”。讲习班的成果将为这些委员会的活动提供重要的投入和建议。该讲习班涉及岩土工程师、地震学家和结构工程师。计划于1993年3月出版讲习班会议记录。

The objective of this Workshop on Earthquake Site Response and Seismic Code Provisions, November 18-20, 1992, University of Southern California, concerns the effects of site response on earthquake ground motions; the aim is to develop recommendations for modifications to existing design guidelines and codes for earthquake site response. It follows on from the Site Effects Workshop held at the University of New York at Buffalo in 1991. Financial support for this workshop is provided by the National Science Foundation, the National Center for Earthquake Engineering Research (NCEER), the U.S. Geological Survey (USGS) and the Southern California Earthquake Center (SCEC). The need to examine the soil categories and site factors (S factors) used in building code site response provisions arises from: (a) concerns with the existing definitions of site factors, and (b) the fact that current building code provisions (that is, soil factors S1 through S3) were developed in the mid-1970's (S4 was added following the 1985 Mexico earthquake). The need for this workshop is further highlighted by the accumulation in recent years of extensive research data and new knowledge on site response effects. It is strongly supported by committees involved in: (a) the planned 1994 revision of the NEHRP (National Earthquake Hazard Reduction Program) Recommended Provisions for The Development of Seismic Regulations for New Buildings; and (b) by the Structural Engineers Association of California's (SEAOC) 1993 planned revision of the "Blue Book". The results from this workshop will provide essential input and recommendations to these committees' activities. The workshop involves geotechnical engineers, seismologists and structural engineers. It is planned to publish the workshop proceedings in March 1993.