English：

Taking a deep excavation project in the soft soil area of Shanghai as the background, theapplication of large-diameter PC construction method combined steel pipe piles in deep excavation in thesoft soil area of Shanghai was understood through pile driving and pulling tests using PC constructionmethod. The impact of each stage on adjacent soil was analyzed. The test results show that using ICEhigh-frequency resonance free hydraulic hammer for large-diameter steel pipe support and extraction isfeasible in deep excavation engineering in soft soil areas of Shanghai. The smoothness, bite and soilblockage of the steel pipe piles are good, and there is no large amount of soil during extraction. Theimpact of extraction on adjacent soil and surrounding environment is within a controllable range. At thesame time, suggestions for the construction process and equipment parameters are proposed based on theexperiment, which helps to facilitate the smooth implementation of formal construction and effectivelyprotect the surrounding environment.