To research the differences of bearing capacity and the time-related setup of both end-open pile and end-closed pile in soft clay,field test of in-situ static pressures of 36 piles have been carried out within 72 days.

The bored pile can lay directly on fallen capacity-holding layer when steel semi-closed pile end is layed into bore hole which can penetrate grit layer.

Development and expectation on soil plug in driving or jacked open-ended pipe piles;

It in case the location geologic environment multiplication,it is better to select large-caliber pile.

This paper analyzes the lack of traditional settingout method and the advantage of digitalization settingout method when analyzing settingout of chamfer stake in cubic meter of earth and stone.