考虑土性相关性的加筋土堤坡可靠度计算研究  

Study on Reliability Calculation of Reinforced Soil Bank Considering Soil Correlation

作　　者：孙勇[1] 

机构地区：[1]贵州大学喀斯特环境与地质灾害防治教育部重点实验室,贵阳550003

出　　处：《路基工程》2011年第1期5-7,11,共4页Subgrade Engineering

基　　金：贵州省委组织部高层次人才科研特助项目(Z053126)

摘　　要：给出了加筋土堤概率可靠度分析的极限状态的功能函数,指出了对计算模式不确定性而进行修正的必要性,同时给出了其在极限状态功能函数中的形式,考虑了土性c与φ值的自相关性和负互相关性。对加筋土堤可靠度计算中考虑了三种不确定性:材料参数的不确定性;荷载和作用因素的不确定性;计算模型的不确定性。This paper gives the performance function of ultimate state of probability reliability of reinforced soil bank and indicates the necessity of correcting indeterminacy of calculation mode. Meanwhile, it gives the form of indeterminacy in performance function of ultimate state and considers auto correlation and cross correlation of c value and φ value of soil. Three indeterminacy of reliability calculation of reinforced soil bank are separately indeterminacy of material parameters, that of load and effect factor and that of calculation mode.

关 键 词：加筋土堤 可靠度 自相关距离 互相关性 计算模式不确定性 

分 类 号：TU472.34[建筑科学—结构工程]