我国自七十年代就利用灌注桩处理高层建筑基础和地质条件差的基础以及大型桥梁的桩基工程了。特别是近几年来,城市高层建筑增多,因排水困难引起的基础下沉现象相当多,所以灌注桩基础越来越受到建设单位和施工单位的青睐。我们在各高层建筑物和高速公路大中桥桩基工程的施工实践中,不仅没有出现任何技术和质量问题,还总结了一套较完整的施工方法。 Since the seventies in our country, the bored piles have been used to deal with the foundations of high-rise buildings and the poor geological conditions as well as the pile foundations of large bridges. Especially in recent years, the number of high-rise buildings in the city has increased, and the foundation sinking caused by drainage difficulties has been quite considerable. Therefore, the foundation of piles is more and more favored by construction units and construction units. In the construction practice of high-rise buildings and piles of Dazhong Bridge of expressway, we not only did not have any technical and quality problems, but also summarized a set of more complete construction methods.