预应力砼管桩支护体系的设计与施工

在江苏边防总队海警支队综合楼基坑支护中,将预应力混凝土管桩作为支护桩进行尝试,达到了理想的效果,得出了管桩在适宜条件下用作基坑支护是可行的。同时,控制管桩支护结构的变形,减少桩身所受弯矩,与内支撑结合使用效果更佳,管桩与支撑支护形式的组合,有利于节约支护成本。预应力砼管桩的桩身质量易于控制以及环保,采用管桩作为支护桩具有良好的经济性,对提高施工效率和缩短工期有良好的保证,将其应用于支护工程则更具有竞争性,拓宽了今后深基坑设计的思路,可予以推广。

Design and construction on prestressed concrete pipe pile timbering system

Prestressed concrete pipe piles are characteristic of high single pile bearing capacity,drive resisting of pile body,strong penetration,quick transportation,civilized construction and clean site,and widely used in the engineering constructions both home and abroad.But the pile was seldom used in foundation timbering engineering,the authors depicted their trial in the construction of a certain comprehensive building and got an ideal effect.The pile body of the prestressed concrete pipe pile was easy to be co...