Test on compressive bearing capacity performance of pipe pile with drill hammer
The breakage rate of pipe pile is high under geological conditions of hard rock.In projects with similar geological conditions in Zhuhai City,the special geological conditions of isolated stone site,silt stratum directly to strongly weathered granite or medium weathered granite,and the effective pile length less than 8m,PHC500 pipe pile is difficult to penetrate,the method of using drill hammer to drive pipe pile into soil is innovative.The compressive bearing capacity of 9 piles with different pile driving methods is tested,and the comparison between the method of drill hole hammer and the method of hydraulic hammer is analyzed.It is found that both of the two methods can meet the requirements of vertical compressive characteristic value of designed single pile.Compared with the traditional pilot hole grouting method,using the pilot hole grouting method can also meet the requirements of the vertical compressive characteristic value of designed single pile,reduce the wet grouting operation,and improve the engineering efficiency.
NETL
NSTL
万方数据
