海上超长大直径永久钢护筒合理壁厚计算

Abstract
Figure/Table
References
Related Citation (5)

Download: PDF (987 KB) HTML (0 KB)
Export: BibTeX | EndNote (RIS)

Abstract Research purposes: As an auxiliary measure for hole formation of pile foundation, the permanent steel casing of the main bridge of Macao-Taipa Fourth Cross-sea Bridge has a diameter of 2.8 m and a length of nearly 100 m, which is not considered to participate in force. The steel casing of offshore pile foundation is usually constructed by pipe rolling machine or full casing rotary drilling machine. It was very important to ensure reasonable wall thickness of permanent steel casing without deformation when it was not pulled out eventually, which was closely related to construction safety and economic cost. In order to avoid economic waste caused by excessive wall thickness of steel casing, and large deformation caused by insufficient wall thickness in the process of sinking, a 3D model of steel casing and surrounding soil and water was established to simulate the construction process of steel casing subjected to torsion under pressure.
Research conclusions: (1) The full-rotary full-casing drilling machine or pipe rolling machine is suitable for sinking of super-long and large-diameter steel casing on the sea. According to the rotary and pressing motion of steel casing, the calculation method of eight loads is given. (2) By means of the research on hoop stress and axial stress, buckling stability of permanent steel casing wall of pile foundation with different pile positions and pile lengths, the steel casing should be in accordance with the permanent structure design on the basis of the bidding documents require. The static calculation and local buckling calculation of safety factor are given, and the reasonable wall thickness of steel casing is determined. (3) The research conclusion can provide a reference for the stability and safety analysis and reasonable wall thickness of permanent steel casing in the drilling pile drilling process using full casing full rotation or pipe rolling machine for super-long and large-diameter offshore pile.

Key words： highway bridge full casing full rotation buckling analysis wall thickness optimization ultra long and large diameter

Received: 30 July 2021

PACS:

U448.25

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	ZHANG Haishun
	CHEN Ningxian
	TANG Yougang
	HU Ruihai

Cite this article:

ZHANG Haishun,CHEN Ningxian,TANG Yougang, et al. Reasonable Wall Thickness Calculation of Offshore Super-long and Large Diameter Permanent Steel Casing[J]. Journal of Railway Engineering Society, 2022, 39(7): 61-67.

URL:

https://tdgcxb.crec.cn/EN/ OR https://tdgcxb.crec.cn/EN/Y2022/V39/I7/61

[1]	澳门特别行政区政府建设发展办公室.澳氹第四条跨海大桥设计连建造工程招标文件[Z]. 澳门:澳门特别行政区政府建设发展办公室,2019.GDI of Macao Special Administrative Region Government. Bidding Document for Design and Construction of the Macao-Taipa Fourth Cross-sea Bridge[Z]. Macao:GDI of Macao Special Administrative Region Government,2019.
[2]	林同棪国际工程咨询(中国)有限公司. 澳氹第四条跨海大桥设计连建造工程设计文件[Z]. 重庆:林同棪国际工程咨询(中国)有限公司,2020.TYLin International Engineering Consulting (China) Co. Ltd. Design Document for Design and Construction of the Macao-Taipa Fourth Cross-sea Bridge[Z].Chongqing: TYLin International Engineering Consulting (China) Co. Ltd, 2020.
[3]	JGJ 94—2008,建筑桩基技术规范[S].JGJ 94—2008,Technical Code for Building Pile Foundations[S].
[4]	中国土木、中国铁建大桥局、澳马建筑工程有限公司联营体.澳氹第四条跨海大桥设计连建造工程施工组织设计[Z]. 珠海: 澳马建筑工程有限公司,2020.China Civil Engineering Construction Corporation/China Railway Construction Bridge Engineering Bureau Group Co.Ltd/Ao-ma Construction Engineering Co. Ltd Cooperative Joint Venture. Construction Organization Design for Design and Construction of the Macao Taipa Fourth Cross-sea Bridge[Z].Zhuhai: Ao-ma Construction Engineering Co. Ltd,2020.
[5]	储王应,王能民.静力压桩沉桩阻力分析与估算[J].岩土工程技术,2000(1):25-28.Chu Wangying, Wang Nengmin. Analysis and Estimation of Static Pile Driving Resistance[J]. Geotechnical Engineering Technique,2000(1):25-28.
[6]	刘雪文. 桩基全套筒配合反循环钻机磨岩施工工艺研究[D]. 大连:大连理工大学,2016.Liu Xuewen. The Construction Technology Research of Bored Pile by Full Steel Casing and Reverse Circulation Drill (RCD) [D].Dalian:Dalian University of Technology,2016.
[7]	陆昭球,高倚山,宋铭栋.关于开口钢管桩工作性状的几点认识[J].岩土工程学报,1999(1):114-117.Lu Zhaoqiu, Gao Qishan, Song Mingdong. Some Cognition about the Working Character of Open Steel Pipe Pile[J]. Chinese Journal of Geotechnical Engineering, 1999(1):114-117.
[8]	陈绍蕃. 钢结构稳定设计指南[M]. 北京:中国建筑工业出版社,2013:124-212.Chen Shaofan. Guide to Stability Design of Steel Structures[M]. Beijing: China Architecture and Building Press,2013:124-212.