Application of high pressure rotary jetting circular composite support pile in deep fill soil slope engineering
This article takes a municipal road project as an example to illustrate the problems of insufficient stiffness and hole col-lapse encountered by ordinary circular support piles during the implementation of deep fill soil slopes. A relatively stable and reli-able high-pressure rotary jet grouting circular composite support pile is proposed. This structure is mainly composed of high-pressure rotary jet composite soil and reinforced concrete circular support piles. It applies high-pressure rotary jet consolidated body and circular support piles to bear horizontal soil pressure and has the advantages of preventing hole collapse, improving the stiffness of the support pile, and improving the physical and mechanical indicators of the soil around the pile. Based on the analysis of the mechanical characteristics of the composite support piles, a formula for increasing the stiffness of the pile section is obtained through theoretical derivation. Practical engineering applications have shown that high-pressure rotary jet grouting circular compos-ite support piles can effectively improve the stiffness of the pile body, reduce the horizontal displacement of the support pile, and solve the problem of hole collapse during pile foundation construction. This can be applied to almost all support piles on fill slopes.
deep fill soil slopehole collapsehigh pressure rotary jet composite support pilepile stiffness
万方数据
维普
