摘要
在采用动力Winkler地基模型并考虑了被动桩与桩周土体相互作用的基础上,运用传递矩阵法求解出层状地基中的群桩水平振动桩-桩动力相互作用因子。与严格解(Kaynia和Kausel,1982年)进行对比,验证了方法的有效性。研究了各因素如桩长、桩底约束、桩间角度以及地基土对桩-桩动力相互作用因子的影响,并提出了"影响桩长"的概念。
A simple analytical solution is outlined for computing the lateral dynamic pile-pile interaction of floating pile groups in layered soil media.A dynamic Winkler model utilizing the finite-element based spring and dashpots is adopted for the effect of pile-soil interaction,combining with a transfer-matrix formulation in the case of multi-layered soils.Pile-soil-pile interaction is considered by assuming interaction between the receiving pile and the surrounding soil.It is demonstrated that the prediction of simplified method is in good agreement with rigorous numerical solutions.Attention is then given to the effect of several factors,such as pile length,tip constraint,angle between piles and soil media;and some interesting features such as ＂influencing pile length＂ are also shown.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2007年第9期1848-1855,共8页
Rock and Soil Mechanics
关键词
桩
水平振动
动力相互作用
pile
lateral vibration
dynamic interaction
