螺杆桩新技术及其运用

The constructing method of half-screw pile

螺杆灌注桩是一种新型的变截面异形桩，是在日本的高强度钢纤维混凝土预制螺纹桩的基础上创新而成的。它的全称为半螺旋钻孔管内泵压混凝土灌注桩，其形状是上部为圆柱型，下部为螺丝型的组合式新型桩。螺杆桩是国内目前唯一的一种无噪音、无污染、不取土、对周边建筑物无影响、承载力高、沉降小、造价低且施工快捷的桩型，其工法经过不断的积累和总结正日趋完善。

Half-screwed pile is a new type of cross-section shaped pile,which is innovating from the high-strength steel fiber reinforced concrete prefabricated pile invented in Japan. Its whole name is half-screwed inside-pumping concrete pile. It has a cylinder for the higher part and a screwed one for the bottom. Presently, it is the only pile type without noise,pollution,extra soil and effect on the surrounding buildings, also has high-performance, low-price and short constructing time at the same time. Through continous accumulation and perfection, the method is even better.