强发育岩溶地区桩基础全套管全回转施工技术探析
Analysis on Construction Technology of Full Casing and Full Rotation of Pile Foundation in Strong Karst Area
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作者信息
- 1. 中冀建勘集团有限公司,河北 石家庄 050200
- 折叠
摘要
为保证桩基施工的稳定性和安全性,文中以某高速公路桥梁工程为例,深入探析了强发育岩溶地区桩基础全套管全回转施工技术,并对其施工效果进行评价.实践发现,全套管全回转施工技术可将钻孔垂直度偏差控制在±0.5%内,钢筋笼垂直度偏差控制在0.5%内,焊接质量合格率在98%以上,平均钻进速度达到1.8 m/h,可有效保证施工效率和安全.
Abstract
In order to ensure the stability and safety of pile foundation construction,taking a highway bridge project as an example,the full casing and full rotation construction technology of pile foundation in strong karst area was deeply analyzed,and its construction effect was evalu-ated.It is found that the verticality deviation of drilling hole can be controlled within±0.5%,the verticality deviation of steel cage can be con-trolled within 0.5%,the qualified rate of welding quality is more than 98%,and the average drilling speed can reach 1.8 m/h,which effec-tively ensures the efficiency and safety of construction.
关键词
强发育岩溶地区/桩基础/全套管全回转施工技术Key words
Highly developed karst area/Pile foundation/Full casing and full rotation construction technology引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据