Ningbo and Xie Tai Wing block project pile foundation project, located at Yinzhou Avenue and Bachelor Road intersection, the project cost: about 25 million yuan; contract duration: 70 calendar days (including the Spring Festival holiday, February 2 to April 12, 2015 day). Pile volume: 5 high-rise buildings, including a Ф700 cast-in-place bored pile a total of 339, length of 56m; 4 450 * 450 square pile of a total of 837, pile length of 45m. There are 474 Ф600 bored piles in the second basement, with a pile length of 42m. Single layer basement 450 * 450 prestressed square pile a total of 173, length of 35m. The amount of support pile foundation: Ф600 ~ Ф800 cast-in-situ piles a total of 508, pile length of 17.0 ~ 28.0m; Ф500 prestressed pipe pile a total of 506, pile length of 14m; Ф700 high pressure rotary jet grouting pile a total of 1361 piles Length of 7 ~ 14m; Ф700 cement mixing pile a total of 3383, pile length of 4 ~ 8m.