Abstract：To study the stress characteristics of the soil beside the branch and plate pile under vertical static and lateral period loads,the experiment test device was made. The test device may ensure the vertical axially loaded during the lateral period load applying. Then,three model pile of one equal-diameter pile and two squeezed branch and plate piles with one plate were made and tested on the equipment. The three piles were all applied vertical static load and lateral period load. The results show that lateral period load,excitation frequency and position of plate along pile body are influencing factors to the soil pressure. Some reasonable suggestions were put forward for practical engineering.

Keyword：squeezed branch and plate pile;combined load;stress characteristics;lateral period load;soil pressure;