吉林大学学报(地球科学版) ›› 2021, Vol. 51 ›› Issue (5): 1347-1355.doi: 10.13278/j.cnki.jjuese.20200292
徐文刚1, 余旭荣1, 年廷凯2, 曹琦1, 曹爱武3, 裴振伟2
Xu Wengang1, Yu Xurong1, Nian Tingkai2, Cao Qi1, Cao Aiwu3, Pei Zhenwei2
摘要: 强度折减数值分析方法在边坡工程中应用广泛,其中FLAC3D已成为三维边坡稳定性分析中的主流计算工具。FLAC3D自带强度折减计算模块,因其计算过程复杂且耗时,一些学者提出了基于"二分法"的强度折减法,但依然不能令人满意。本文利用Python编程语言对FLAC3D进行二次开发,实现了"二分法"强度折减法的全面优化,包括初始应力场载入优化和计算时步上限优化,建议计算时步上限取初始应力场计算时步的1.50倍,此时既可以保证计算结果的准确性又可以节省计算时间。利用优化后方法对某公路复杂三维填方路基边坡进行了三维强度折减法计算,结果表明,在保证计算准确性的同时,本文方法计算效率较其他改进的强度折减法至少提升50%,较程序自带模块提升了300%以上。
中图分类号:
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