Geotechnical Reconnaissance of the Effects of the January 17, 1995 Hyogo Nanbu Earthquake, Japan

1995 年 1 月 17 日日本兵库县南部地震影响的岩土勘察

• 批准号: 9520204
• 负责人: Nicholas Sitar
• 金额: $ 5万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-03-01 至 1996-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9520204&HistoricalAwards=false
• 关键词: Geotechnical; Reconnaissance; Effects; January; 17

9520204 Sitar The January 17, 1995, Hyogo Nanbu Earthquake in Japan caused extensive damage in the port city of Kobe, in adjacent Osaka, and even in more distant Kyoto. Over 5000 people died, with thousands of dwellings and other structures destroyed, and with close to 300,000 people displaced. Preliminary damage estimates place this event as the most costly natural disaster in Japan in this century. The geologic setting, topography, and the level and the type of development in the affected area suggest that there is a great similarity to the San Francisco Bay area, and specifically to the region along the Hayward Fault. It is also apparent that the geotechnical aspects of the earthquake are quite significant. Experience from the two most recent California earthquakes, Loma Prieta and Northridge, shows that it is critical that as much information as possible be gathered and documented in the immediate aftermath of an event, since the geotechnical data is often highly perishable. The objective of this research effort is to perform a geotechnical reconnaissance of the affected region, and to gather and document as much data associated with the geotechnical aspects of the earthquake as logistically possible. Particular focus is directed towards assessing the following: (1) liquefaction and ground compaction, and associated ground displacement, (2) effect of local soil conditions on ground surface shaking characteristics and damage patters, (3) seismic response of natural slopes, (4) the seismic response of earth structures, and structural fills, (5) the influence of soil conditions on the performance of port facilities, and (6) the effect of surface rupture on damage to structures and lifelines. The reconnaissance is being planned in cooperation with the leading geotechnical earthquake engineers in Japan. The team will promptly report its findings tot he U.S. research community; especially via new Internet Mosaic servers at the University of Southern Ca lifornia and the University of California at Berkeley - servers set up specifically to share information within the geotechnical earthquake engineering community. ***

9520204西塔1995年1月17日，日本兵库县南部发生地震，在港口城市科比、邻近的大坂，甚至更远的京都造成了广泛的破坏。 5000多人死亡，数千所住房和其他建筑被毁，近30万人流离失所。 初步的损失估计将这一事件列为日本在本世纪损失最惨重的自然灾害。 受影响地区的地质背景、地形、发展水平和类型表明，与旧金山弗朗西斯科湾地区，特别是海沃德断层沿着地区有很大的相似性。 同样明显的是，地震的岩土工程方面是相当重要的。 最近两次加州地震（洛马普列塔和北岭地震）的经验表明，在地震发生后立即收集和记录尽可能多的信息至关重要，因为岩土工程数据往往极易损坏。 这项研究工作的目的是对受影响地区进行岩土工程勘察，并收集和记录尽可能多的与地震岩土工程方面相关的数据。 特别侧重于评估以下方面：（1）液化和地面压实，以及相关的地面位移，（2）当地土壤条件对地面振动特性和破坏模式的影响，（3）天然斜坡的地震反应，（4）土结构和结构填料的地震反应，（5）土壤条件对港口设施性能的影响;（6）地表破裂对结构和生命线损坏的影响。 正在与日本主要的岩土地震工程师合作规划勘察工作。 该小组将立即向美国研究界报告其发现，特别是通过南加州大学和加州大学伯克利分校的新Internet Mosaic服务器--专门为在岩土地震工程界共享信息而设立的服务器。 ***