郑州龙湖镇复杂地形桩基施工实践

Pile Foundation Construction on Complex Terrain in Longhu Town of Zhengzhou

摘要:

郑州市新郑龙湖镇升达大学临街综合楼灌注桩基础，施工场地地形复杂，跨越一已有边坡，高差8.5 m，先采用复合土钉墙进行了边坡永久支护，坡下桩采用钻孔灌注桩施工工艺，坡上桩上部采用人工洛阳铲成孔，下部采用正循环钻机坡上钻进、坡底水平埋设PVC管进行半桩泥浆循环成孔，其余采用钻孔灌注桩施工工艺，取得了良好的施工效果，技术成果可为类似工程的设计施工提供参考。

Abstract:

The construction site of the cast-in-place pile foundation near Shengda University’s complex building in Longhu Town, Xinzheng, Zhengzhou, is located on a complex terrain, and spans an existing slope with an elevation difference of 8.5m. The composite soil nailing wall was used to retain the slope permanently. The grouted pile was used for the down-slope pile with the manual Luoyang shovel used for construction of the upper section of the pile and the direct circulation drilling for the lower section. Horizontally buried PVC pipes were used to make semi-pile circulating holes with the remaining completed by are grouted pile drilling. Good construction results have been achieved, providing reference for similar projects.