长江漫滩地区广泛存在深厚砂层,该砂层构成复杂,地区差异大,对无建设经验的地区,勘察单位很难取得深层砂土的准确土工参数,采用桩基础时建议进行设计试桩。本文通过对勘察资料与设计试桩的对比分析,选用合适的桩型及沉桩工艺,取得较好的经济效益。 There are widespread deep sand layers in the floodplain area of ​​the Yangtze River. The sand layers are complex and have big regional differences. For those without construction experience, it is very difficult for the survey units to obtain the accurate geotechnical parameters of the deep sand soil. When adopting the pile foundation, it is suggested to design the test piles. In this paper, the contrast between the survey data and the designed test piles is adopted, and the suitable pile type and pile sinking process are selected to obtain better economic benefits.