摘要
近年来,港口工程中超长大直径钢管桩的使用越来越普遍,但该类桩基施工需配备大型打桩船,所需施工作业水域也较大。结合码头补桩工程实例,针对后方水域空间狭小、沉桩需穿透抛石层、钢管桩为超长桩等重难点,提出了冲击引孔穿透抛石层及分节吊打钢管桩的方法,叙述了沉桩施工工艺的流程和主要施工技术、所采用的施工设备等。采用该方法,工程施工效果良好、满足设计和规范要求。
In recent years,super-long and large-diameter steel pipe piles have enjoyed increasingly wide application in port projects.However,the construction of this kind of pile foundations requires a large-scale piling barge and a large water area for construction operations.Drawing on an example of an additional piling project of a wharf,this paper addresses the difficulties involving the narrow space in the rear water area,the penetration of the riprap layer by the cast-in-place pile as needed,and the super-long steel pipe pile.For this purpose,the paper puts forward the methods of impacting a guide hole to penetrate the riprap layer and lifting and driving a steel pipe pile in a piecewise manner and describes the technological process of pile driving construction,the main construction technology,and the construction equipment.Owing to the employment of the proposed methods,the project achieves a satisfactory construction effect and meets the requirements of the design and specifications.
作者
魏启名
WEI Qiming(China Nuclear Harbor Engineering Co.,Ltd.,Guangzhou 511466,China)
出处
《水运工程》
北大核心
2023年第3期183-187,共5页
Port & Waterway Engineering
关键词
水域空间狭小
抛石层
超长桩
引孔
分节吊打
narrow water area space
riprap layer
super-long pile
guide hole
piecewise lifting and driving
