Research and application of large diameter steel cylinder island construction technology in Hong Kong-Zhuhai-Macao Bridge project

ABSTRACT

The large diameter deep inserted steel cylinder is used for the first time in the artificial island project of Hong Kong-Zhuhai-Macao Bridge. Through the ingenious conception of the scheme of large diameter deep inserted steel cylinder, this paper analyzes the working mechanism, design key points and construction key points of large diameter deep inserted steel cylinder structure, and introduces the research and application of large diameter deep inserted steel cylinder technology in foundation pit support engineering of East–West artificial island of Hong Kong Zhuhai Macao Bridge. Two arc-shaped steel plate auxiliary grids are used to connect and seal the adjacent cylinders. The arc steel plate can be manufactured in the factory and transported to the site for construction, which greatly reduces the construction difficulty and material cost. The formed cofferdam Island wall has good water stop performance and good structural stability.

KEYWORDS:

• Large diameter deep inserted steel cylinder
• island enclosure
• water stop cofferdam of foundation pit
• impervious
• stability

Disclosure statement

No potential conflict of interest was reported by the author(s).

Data availability statement

All data, models, and code generated or used during the study appear in the published article.