1986年12月至87年3月,我们采用压力注浆桩法,完成了沈阳市昆山小区5~#、6~#住宅楼的桩基础工程。本文以该工程为例,介绍压力注浆桩的冬期施工应用。一、工程概况 5~#、6~#住宅楼工程主体是8层局部9层现浇框架结构,总建筑面积10850m~2。原设计采用预制桩基础,单桩垂直承载力要求400KN,总桩数804根。施工开始后才打了 From December 1986 to March 87, we completed the pile foundation engineering of the 5~# and 6~# residential buildings in Kunshan District of Shenyang City by adopting the pressure grouting pile method. This article takes the project as an example to introduce the winter construction application of pressure grouting piles. I. Project Overview The main body of the 5~# and 6~# residential buildings is an 8-storey, partially 9-floor cast-in-place frame structure with a total construction area of ​​10,850m~2. The original design used prefabricated pile foundation. The vertical bearing capacity of a single pile was 400KN and the total number of piles was 804. Only after the construction started