Engineering geological characteristics of the 1998 Adana-Ceyhan earthquake, with particular emphasis on liquefaction phenomena and the role of soil behaviour
Engineering geological characteristics of the 1998 Adana-Ceyhan earthquake, with particular emphasis on liquefaction phenomena and the role of soil behaviour
复制标题
1998 年阿达纳-杰伊汉地震的工程地质特征，特别强调液化现象和土壤行为的作用
DOI：
10.1007/s100640000053
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
H. Sonmez
中科院分区：
文献类型：
--
作者：
R. Ulusay;Ömer Aydan;H. Kumsar;H. Sonmez
1998年6月27日，土耳其南部发生了阿达纳-杰伊汉地震（Ms=6.2），造成145人死亡，杰伊汉镇及其附近定居点的建筑物遭到广泛破坏。发生了土壤液化、侧向扩展引起的地面破坏和罗克瀑布。阿达纳地区的特点是具有三角洲形状的大型冲积盆地。盆地大部分为第四纪新近全新世沉积物。最近沉积物的快速沉积和整个盆地非常浅的地下水位创造了有利于液化的条件。地震引起的土壤液化和液化评估的基础上，现场性能数据的初步调查的结果，连同有关的土壤的可能贡献的损害持续的建筑物的评价。液化敏感性分析的结果表明，液化场地的数据在现场性能评估方法建议的经验范围内。研究还表明，浅砂层应该已经液化，现场观察到的表面破坏可以通过可液化沉积物厚度与上覆不可液化土壤之间关系的界限来预测。根据实际地震强震记录的加速度反应谱进行的现场反应分析表明，土壤特性是地震造成建筑物损坏的最重要因素之一。
The Adana-Ceyhan earthquake (Ms=6.2) occurred in the southern part of Turkey on 27 June 1998 and resulted in the loss of 145 lives and extensive damage to buildings in Ceyhan town and the settlement areas in its vicinity. Soil liquefaction, ground failure due to lateral spreading and rock falls occurred. The area of Adana is characterised by a large alluvial basin with a delta shape. Most of the basin is filled with Quaternary recent Holocene deposits. The recent rapid deposition of sediments and the very shallow groundwater table throughout the basin create conditions conducive to liquefaction. The results of a preliminary investigation of soil liquefaction caused by the earthquake and liquefaction assessments based on field performance data are presented together with evaluations concerning the likely contribution of the soils to the damage sustained by buildings. The results of the liquefaction susceptibility analysis indicated that the data from the liquefied sites were within the empirical bounds suggested by the field-performance evaluation method. It was also shown that shallow sand layers should have liquefied and the surface disruption observed on the site could be predicted by the bounds used for the relationships between the thickness of liquefiable sediments and the overlying non-liquefiable soil. Site-response analyses based on acceleration response spectra from the actual earthquake's strong motion records revealed that soil behaviour was one of the most significant factors in the damage to buildings caused by the earthquake.