桩基础布置方案对闸室应力位移影响分析

Analysis on Influence of Layout Scheme of Pile Foundation on Stress Displacement of Sluice Chamber

摘要:

针对桩基础水闸不同桩基布置方案，建立三维有限元模型，分析桩基布置对闸室应力位移的影响。研究表明:把桩集中布置在闸墩底下对减小底板的应力，特别是减小两闸墩间的底板应力具有明显作用；当桩数相同时，桩的布置方式对闸室位移影响较小；对桩基础水闸的应力和位移进行计算时最好采用实际桩基与闸室结合整体模型，这样计算结果才能反映实际情况，但水闸结构尺寸较大、桩数量较多时可采用复合地基进行计算。

Abstract:

For the different pile foundation layout schemes of sluice, a three-dimensional finite element model is established to analyze the influence of pile foundation layout on the stress displacement of the sluice chamber. The study shows that centralized layout of piles under the sluice pier can reduce the stress of the bottom plate, especially the stress of the bottom plate between the two piers. When the number of piles is the same, the layout mode of piles has little influence on the displacement of the sluice chamber. For the calculation of stress displacement of pile foundation sluice, it is better to use the integrated model of actual pile foundation and sluice chamber. In this way, the calculation results can reflect the actual situation. However, when the size of sluice structure is large and the number of piles is large, the composite foundation can be used for calculation.