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1引言随着我国国民经济的高速增长,建筑业也得到了蓬勃的发展,各大城市高楼林立,大型公共建筑、工业厂房不断涌现。为提高天然地基的承载能力或加固软弱地基,以满足建筑物上部荷载的要求,确保建筑物(构筑物)的工程质量,桩基的使用已日益普及,近几年预制管桩桩基础作为提高地基的承载能力一种技术措施,在建筑施工得到推广应用。通常的预制管桩桩表面都是光滑的,当打入或者压入预制桩时,
1 Introduction With the rapid growth of our national economy, the construction industry has also been booming. There are many tall buildings, large public buildings and industrial plants in major cities. In order to improve the carrying capacity of natural foundation or to reinforce the soft foundation in order to meet the requirements of the upper part of the building to ensure the construction quality of the building (structure), the use of pile foundation has become increasingly popular. In recent years, Carrying capacity of a technical measure, in the construction of the building has been popularized and applied. The usual precast pipe pile surface is smooth, when the precast pile into or into,