Squeezing Effect of Dense Piles in Soft Soil and General Prevention Measures

The corresponding volume of soil is squeezed during dense piles driving on coastal soft foundation. This is called the "squeezing effect" which has influence on the adjacent piles, soil and buildings. In this paper, the influence of squeezing effect is analyzed on the basis of theoretical analysis and construction experience. Some general measures to control "squeezing effect" during construction procedure are described such as reasonable planning of construction direction and route, effective controlling of daily construction amount and speed, setting soil groove that prevent squeezing effect and improving the pile tips. Moreover, these prevention measures which are used to control the squeezing effect of dense piles in soft soil are proved effective in the powerhouse project of Guangzhou Nansha area.