Abstract: As a new kind of pipe pile, the cast-in-place concrete thin-wall pipe pile, referred to as PCC pile, with a large diameter, has been used in many engineerings to improve the soft ground; but the bearing capacity under lateral load hasn’t been studied well. Through the in situ test, the authors analyze the horizontal bearing capacity, the pile displacement and the soil pressure around the pile under lateral load. In addition, the effect of the repetitious loading pattern on the pile-soil interaction is also given. All tests show that the PCC pile can be provided with preferable horizontal bearing capacity; and the force act on the PCC pile mainly fast on the upper part; at last, the analysis also shows that the one-way cyclic loading has much effects on pile lateral capacity and the nonlinearity of pile soil interaction.

Key words: PCC pile, lateral load, in-situ test, lateral capacity