摘要
通过有限差分法(FLAC3D)模拟,探求了微型桩群桩加固滑坡过程中连梁的作用。模拟结果表明,加连梁时其安全系数比不加连梁要提高6%;在承担的滑坡推力上而言,不加连梁情况下,其承担的推力最大值比加连梁时要至少大90%;比较每排桩承担滑坡推力的分配比例,其结果差异很大,无连梁时不利于均匀布桩,而有连梁时更能节省桩的成本;有无连梁对其弯矩的影响不是很明显。根据模拟结果,采用相似比可推及一般的微型桩,其结果可为设计微型桩时考虑连梁作用提供参考。
Function of coupling beams of micro-piles in landslide disasters is studied based on results from calculation with finite difference method （FLAC3D）,which shows that stability factor with beams will increase by 6% comparing with that without beams.Referring to landslide thrust which every pile without beams would bear;the maximum is 90% greater than that with beams.As to thrust-distribution for each row,it is great different,and need even disposal for piles with no beams,while collocation with beams can be more economical.Moment is lightly influenced with or without beams.The result can be made for common micro-pile which drawn based on theory of similarity ratio,which provide reference for designing.
出处
《灾害学》
CSCD
2010年第2期45-48,共4页
Journal of Catastrophology
基金
国土资源大调查项目(1212010814016)
关键词
微型桩
有限差分法
连梁
滑坡推力
弯矩
micro-pile
finite difference method
coupling beam
landslide thrust
bending moment
