超深大直径钻孔灌注桩施工技术

Construction technique of ultra-deep bored filling pile with large diameter

钻孔灌注桩应用于软土-岩石地基的处理,具有施工技术成熟、成桩质量高、适应范围广等优点,得到了广泛应用。本文介绍了温州世贸中心大厦120m超深大直径钻孔灌注桩的施工技术,并针对其施工中极易引起的钻进孔斜、卡钻、垮孔、堵管等问题,提出了相应的处理措施。

The application of bored filling pile in the treatment of soft soil-rock foundation is a mature and extensively used construction technique,and can make a high quality pile,This paper introduced the construction technique of 120m ultra-deep bored filling pile with large diameter in Wenzhou world trade center mansion, and proposed related treatment measure against the tilted boring, drill clutched, bore collapsed and pipe blocked etc.,problem easy happened during the construction of ultra-deep bored filling pile with large diameter, and proposed related countermeasures.