挤扩多支盘灌注桩（以下简称扩盘桩）作为一种变截面桩 ,是在普通的钻孔灌注桩基础上发展起来的 ,其承载力高 ,材料用量少 ,工期短 ,造价低 ,明显优于普通灌注桩。近年来 ,在黄河三角洲地区初步应用中取得了良好的经济效益和社会效益。１工程概况胜利油田科技开发中心楼地下１ As a kind of variable cross-section pile, the expanded-expanded multi-branch cast-in-situ piles (hereinafter referred to as expanded pile) are developed on the basis of ordinary cast-in-place bored piles and have high bearing capacity, less material consumption, short construction period and low cost , Which is obviously better than ordinary bored piles. In recent years, the preliminary application in the Yellow River Delta has achieved good economic and social benefits. 1 Project Overview Shengli Oilfield Science and Technology Development Center floor 1 underground