摘要
本文通过对郑州黄河特大桥桩基础施工实例技术难点的阐述,结合目前在钻孔灌注桩过程中容易发生的坍孔、桩底沉渣过厚、护筒失效、孔斜、扩径、钢筋笼偏位及断桩等技术难点,提出了相关的措施及建议,希望为今后类似桥梁基础的施工提供宝贵的经验。
This article bases on the elaboration of technical di-fficulties in extra-large bridge pier foundation construction of Zhengzhou Yellow River, combines with the technical difficu-lties of slumping hole prone, the thickness of pile bot om sedi-ment, pile casing failure, dril ing, hole diameter deviation and breaking pile of reinforcing cage in the process of bored piles to put forward the relevant measures and suggestions, and ho-pe to provide valuable experience for the future construction of similar bridge foundation.
出处
《城市建筑》
2014年第2期58-58,65,共2页
Urbanism and Architecture
关键词
钻孔灌注桩
郑州黄河特大桥
施工
孔斜
缩颈
bored piles
the extra-large bridge of Zhengzhou Yel ow River
construction
hole deviation
necking down
