摘要
结合广(州)清(远)高速公路改扩建工程实例,介绍了在临近既有建筑物的情况下,溶洞桩基采用旋挖钻机施工,配以长工具式套管,通过钻具和施工工艺改进,取得了理想效果,拓宽了旋挖钻机的使用范围。
Combined with the example of Guangzhou-Qingyuan Expressway reconstruction project,the paper introduces the situation of utilizing rotary drilling rig in cave pile foundation near the existing buildings,which achieves ideal effect through using long tool-typed casing and drilling tool along with improvement of construction technology. And it widens the range of rotary drilling rig.
出处
《铁道建筑技术》
2015年第11期54-57,共4页
Railway Construction Technology
基金
中国铁建港航局集团有限公司科技研究开发计划项目(2013-04)
关键词
岩溶地层
桩基
旋挖钻机
长套管
karst formation
pile foundation
rotary drilling rig
long casing
