非确定性分析方法在岩土地震工程中的应用  

Uncertainty analysis method applied in geotechnical earthquake engineering

作　　者：孙昱[1] 孙军杰[1,2,3] 冯敏杰[1] 

机构地区：[1]中国地震局兰州地震研究所,甘肃兰州730000 [2]中国地震局甘肃省黄土地震工程重点实验室,甘肃兰州730000 [3]甘肃省岩土防灾工程技术研究中心,甘肃兰州730000

出　　处：《世界地震工程》2015年第3期258-265,共8页World Earthquake Engineering

基　　金：中国地震局地震预测研究所基本科研业务费项目(2013IESLZ01);国家自然科学基金项目(51209186)

摘　　要：岩土地震工程属于岩土工程与地震工程的交叉领域。受岩土对象多变性和动力加载复杂性的双重影响,该领域涉及的科学问题,不得不面临更多非确定性的挑战。通过分析岩土地震工程领域中应用非确定性分析方法的研究现状,明晰非确定性分析的难点所在,结合各类非确定性分析方法的内在不足厘定解决岩土地震工程领域非确定性问题的薄弱环节,力求可以为非确定分析方法模型的建立和改进提供一些思路与方向。Geotechnical earthquake engineering is the intersection of geotechnical engineering and earthquake engi- neering. Under the impact of geoteehnieal object polytrope and dynamic loading complexity, scientific issues in the field has to face more uncertain challenges. Few uncertain analysis methods of state design has been applied on geoteehnieal studies, since the research objects of geotechnieal engineering, rock and soil, is far more complex than those in other structural engineering, and has variable characteristics over time and space. In fact, the uncertainty and non-uniqueness is presented widely in theoretical research of earthquake and practical application, and it＇s a major scientific issue in geotechnical earthquake engineering that how to reasonably use limited experiments data for the actual places＇ quantitative evaluation. The uncertain analysis methods can make up some weaknesses of tradi- tional fix-valued methods. Analysis application status of uncertain analysis definite the difficult point. Combined with uncertain analysis deficiency solve the weakness of uncertain problem in geoteehnical earthquake engineering, so as to provide some thoughts or orients for establish and improvement of uncertain analysis method models.

关 键 词：岩土体 地震动 不确定性 非确定性分析 展望 建议 

分 类 号：TU42[建筑科学—岩土工程]