摘要
应用大型有限元数值分析软件,以现场模型试验为依据,在基本假定的条件下,建立数值分析模型。通过调整桩筏基础中桩长的参数,研究了阀板沉降、桩顶反力、地基土反力随桩长的变化情况。随着桩长的增加,核心筒中心位置的减沉效果明显,桩顶反力减小量的变化速率减小;筏板中心区地基土反力逐渐增加,而筏板板边和筏板角部位置地基土反力逐渐减小。从而证明了筏板荷载由桩土共同作用承担的结论。
Based on large finite element numerical analysis software, and according to the model test under the some assumptions, a numerical simulation model was built through the adjustment of the pile length of a pile-raft foundation. The rules about raft settlement, pile top counterforce and soil counterforce of a pile-raft foundation were studied. With the increase of pile length, the reduction of sink effect is obvious in the core tube central position. The rate of pile top counterforce is reduced. Soil counterforce was increased in the central. Soil counterforce was reduced in the corner and side of the raft. The conclusion is that the raft load is borne by both the pile and foundation soil.
出处
《工程力学》
EI
CSCD
北大核心
2013年第B06期104-108,共5页
Engineering Mechanics
基金
河北省城乡与住房建设厅项目(2005-140)
关键词
有限元
数值分析
变桩长
桩筏基础
共同作用
finite element
numerical analysis
variable length
piled raft foundation
settlement
