软土地基挤扩支盘桩基础试验研究

    Experimental study on squeezed branch pile foundation in soft soil ground

    • 摘要: 挤扩支盘桩具有承载力高、沉降小、施工机具简单等优点。针对我国沿海地区软土地基,开展了挤扩支盘桩的竖向抗压、抗拔和水平静载荷试验,得到了极限抗压、抗拔和水平承载力。通过试桩的桩身内力测试,得到桩身轴力的分布规律,研究了挤扩支盘桩的荷载传递机理和承载性能。试验结果表明,挤扩支盘桩的竖向承载力比普通直孔桩有较大提高,具有广阔的应用前景。

       

      Abstract: The squeezed branch pile has the virtues of high bearing capacity, low settlement and simple machinery. With regard to soft soil foundation in the littoral of China, the vertical compressive, vertical pulling and horizontal static load tests are carried out to obtain the ultimate bearing capacity under various working conditions. By testing the internal force of piles, the distribution law of the axial force is obtained, and the load transfer mechanism and bearing capacity are studied. Based on the test results, the squeezed branch pile has obvious advantages in bearing capacity compared with the conventional piles.

       

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