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透水混凝土桩兼具了刚性桩的高强度特性和散体桩良好透水性的特点,适用于地基的加固处理。为了研究透水性混凝土桩地基处理技术对地基的减压降沉效应,基于有限元法和Biot固结理论对路基荷载作用下透水性混凝土桩复合地基的超静孔隙水压力、桩土应力比、水平位移、沉降等进行研究,并与散体桩和刚性桩进行了对比分析。研究发现透水性混凝土桩复合地基内累积的超静孔隙水压力能够迅速消散,说明透水性混凝土桩具有显著的减压效应;同时发现,透水性混凝土桩复合地基的水平位移和工后沉降较小,证明透水性混凝土桩在降低地基沉降方面具有显著的作用。因此,透水性混凝土桩特别适用于加固透水性差、工后沉降大的地基。
Permeable concrete piles have the characteristics of high strength of rigid piles and good permeability of loose piles. They are suitable for foundation reinforcement. In order to study the effect of foundation treatment on the foundation by hydraulic submerged concrete pile, the excess pore water pressure, pile-soil stress ratio, Horizontal displacement, settlement and other research, and with the bulk pile and rigid pile comparative analysis. It is found that the excess pore water pressure accumulated in the water-permeable concrete pile composite foundation can dissipate rapidly, which indicates that the water-permeable concrete pile has a significant decompression effect. It is also found that the horizontal displacement and post-construction settlement of the water-permeable concrete pile composite foundation are small It is proved that pervious concrete piles play a significant role in reducing ground settlement. Therefore, the water-permeable concrete pile is particularly suitable for strengthening the foundation with poor water permeability and large settlement after construction.