王维玉, 赵拓. 变桩长桩筏基础优化设计数值模拟分析[J]. 工程力学, 2013, 30(增刊): 104-108. DOI: 10.6052/j.issn.1000-4750.2012.03.S009
引用本文: 王维玉, 赵拓. 变桩长桩筏基础优化设计数值模拟分析[J]. 工程力学, 2013, 30(增刊): 104-108. DOI: 10.6052/j.issn.1000-4750.2012.03.S009
WANG Wei-yu, ZHAO Tuo. NUMERICAL SIMULATION ANALYSIS ON OPTIMIZATION DESIGN OF VARIABLE LENGTH PILE RAFT FOUNDATION[J]. Engineering Mechanics, 2013, 30(增刊): 104-108. DOI: 10.6052/j.issn.1000-4750.2012.03.S009
Citation: WANG Wei-yu, ZHAO Tuo. NUMERICAL SIMULATION ANALYSIS ON OPTIMIZATION DESIGN OF VARIABLE LENGTH PILE RAFT FOUNDATION[J]. Engineering Mechanics, 2013, 30(增刊): 104-108. DOI: 10.6052/j.issn.1000-4750.2012.03.S009

变桩长桩筏基础优化设计数值模拟分析

NUMERICAL SIMULATION ANALYSIS ON OPTIMIZATION DESIGN OF VARIABLE LENGTH PILE RAFT FOUNDATION

  • 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。

     

    Abstract: 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.

     

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