城市建筑
城市建築
성시건축
URBANISM AND ARCHITECTURE
2014年
2期
58-58,65
,共2页
钻孔灌注桩%郑州黄河特大桥%施工%孔斜%缩颈
鑽孔灌註樁%鄭州黃河特大橋%施工%孔斜%縮頸
찬공관주장%정주황하특대교%시공%공사%축경
bored piles%the extra-large bridge of Zhengzhou Yel ow River%construction%hole deviation%necking down
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。
本文通過對鄭州黃河特大橋樁基礎施工實例技術難點的闡述，結閤目前在鑽孔灌註樁過程中容易髮生的坍孔、樁底沉渣過厚、護筒失效、孔斜、擴徑、鋼觔籠偏位及斷樁等技術難點，提齣瞭相關的措施及建議，希望為今後類似橋樑基礎的施工提供寶貴的經驗。
본문통과대정주황하특대교장기출시공실례기술난점적천술，결합목전재찬공관주장과정중용역발생적담공、장저침사과후、호통실효、공사、확경、강근롱편위급단장등기술난점，제출료상관적조시급건의，희망위금후유사교량기출적시공제공보귀적경험。
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.
