摘要
根据微型桩的结构布置形式,将加固顺层岩质边坡的微型桩体系分为3种类型,即独立微型桩体系、平面桁架微型桩体系和空间桁架微型桩体系。将微型桩体系和桩间岩土体视为桩–岩土体的复合型结构,提出了桩–岩土体–桩的相互作用模式和作用力计算分析模型,该模型考虑桩–岩土体–桩的相互作用,可较好模拟滑坡推力在各排桩之间的传递机制。最后,应用有限元理论建立计算微型桩体系内力和变形的力学模型,并将该模型应用于渝怀铁路顺层岩质边坡加固计算中,取得了良好的效果。
According to the arrangement of micropiles, the micropile system used to reinforce bedding rock slope can be classified into three types： independent micropiles system, planar truss micropile system and spatial truss micropile system. On the basis of combining the mircropiles and the rock mass among the micropiles as a whole structure, a new analytical model of micropile system is proposed. The interaction between the micropiles and rock mass can be simulated with this model. The mathematical and mechanical model for the internal force and deformation of the micropile system is established by finite element method.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2006年第2期284-288,共5页
Chinese Journal of Rock Mechanics and Engineering
关键词
岩石力学
微型桩体系
顺层岩质边坡
桩-岩土体复合型结构
力学模型
rock mechanics
microple system
bedding rock slope
composite structure of piles and rock mass
mechanical model
