登录
注册
E-alert
登录
注册
E-alert
STUDY ON CALCULATION METHODS OF BEARING CAPACITY RELIABILITY OF REINFORCED CLAY FOUNDATION
-
摘要: 在给出加筋条形地基概率可靠度分析极限状态功能函数的同时,指出对计算模式汉森(Hassan)公式不确定性进行修正的必要性,并以汉森公式计算的均值与现场承载力试验的均值相等进行修正。同时考虑土性参数c与值的自相关性和负的互相关性,使条形地基承载力可靠度增加。对加筋条形地基可靠度计算中考虑了3种不确定性:1)材料参数的不确定性。2)荷载和作用因素的不确定性。3)计算模型的不确定性。最后指出,加筋地基可靠度计算方法是一个值得进一步研究的课题。Abstract: In this paper,the limit state function of a reinforced clay foundation,which was used in reliability analysis was obtained. At same time,the modification of the uncertainty of Hassan formula was done: the average value from Hassan formula was equal to the average value of limit bearing capacity obtained in site test. The selfcorrelation of soil character parameter and commutative correlation between soil character parameters were considered in the calculation of capacity reliability of reinforced clay foundation,with which the reliability of the foundation was increased. It was considered that the uncertainties of material parameters,load factors and calculation models. Finally,it is pointed out that a further study on the calculation methed of this sort of foundation is needed.
-
高大钊,袁聚云.土质学与土力学[M].北京:人民交通出版社,2002. [2] 王钊.土工合成材料[M].北京:机械工业出版社,2005. [3] JTJ 02485公路桥涵地基与基础设计规范[S]. [4] 张晓君.基于可靠度的土工合成材料加筋地基承载力预测[C]∥中国土木工程学会第九届土力学及岩土工程学术会议.北京:中国建筑工业出版社,2003. [5] GBJ 6884建筑结构设计统一标准[S]. [6] 武清玺.结构可靠性分析及随机有限元法[M].北京:机械工业出版社,2005. [7] GB 500102002混凝土结构设计规范[S]. [8] GB/T 502831999公路工程结构可靠度设计统一标准[S]. [9] GB 5051890港口工程结构可靠度设计统一标准[S]. [10] 高谦.土木工程可靠性理论及其应用[M].北京:中国建材工业出版社,2007. [11] 包承纲.可靠度分析方法在岩土工程的应用[C]∥海峡两岸土力学及基础工程、施工技术学术研讨会论文集.西安:1994. [12] Vanmarcke E H. Probabilistic Modeling of Soil Profiles[J].Journal of Geotechnical Engineering,ASCE,1977,103(GT11). [13] 孙勇.条形基础模型试验报告[R].贵阳:贵州大学,2008. -
点击查看大图
计量
- 文章访问数: 86
- HTML全文浏览量: 5
- PDF下载量: 85
- 被引次数: 0
下载:
