考虑土性相关性的加筋土堤坡可靠度计算研究

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 soilbank and indicates the necessity of correcting indeterminacy of calculation mode. Meanwhile, it gives the formof indeterminacy in performance function of ultimate state and considers auto correlation and cross correlation ofc value and 'φ value of soil. Three indeterminacy of reliability calculation of reinforced soil bank are separatelyindeterminacy of material parameters, that of load and effect factor and that of calculation mode.