Innovative Application of Needlebeam Fullcircular Formwork Jumbos in Construction of Lining of Subsea Waterdiversion Tunnel

doi:10.3973/j.issn.1672-741X.2013.08.012

Tunnel Construction ›› 2013, Vol. 33 ›› Issue (8): 690-695.DOI: 10.3973/j.issn.1672-741X.2013.08.012

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Innovative Application of Needlebeam Fullcircular Formwork Jumbos in Construction of Lining of Subsea Waterdiversion Tunnel

CHEN Qiwei^1,2, WANG Yali³, ZHANG Jian^4

（1. State Key Laboratory of Shield Machine and Boring Technology, Zhengzhou 450001, Henan, China; 2. China Railway Tunnel Group Co., Ltd., Luoyang 471009, Henan, China;  3. Jiyuan Huatai Surveying and Mapping Co., Ltd., Jiyuan 459000, Henan, China;  4. Management Department of Intake Tunnel of Taishan Nuclear Power Station, China Railway Tunnel Stock Co., Ltd., Taishan 529200, Guangdong, China)

Received:2013-03-29 Revised:2013-05-29 Online:2013-08-20 Published:2013-08-23

Abstract

Abstract:

Needlebeam fullcircular formwork jumbos are used in the construction of the secondary lining of the intake tunnel of Taishan Nuclear Power Plant, so as to realize onceforall and rapid construction of the fullcircular concrete lining of the subsea waterdiversion tunnel. In this paper, the method and procedure of the construction of the secondary lining are analyzed, the main structure and technical parameters of the formwork jumbos are presented, and the key construction technologies are described. Furthermore, three innovative points of the application of the formwork jumbos, including the construction arrangement and design inside and outside of the tunnel in the case of 3 formwork jumbos, the continuous construction of the lining by means of 3 formwork jumbos and the cautions for the continuous construction of the lining by 3 formwork jumbos, are summarized.

Key words: subsea tunnel, needlebeam fullcircular formwork jumbo, oneway synchronized lining, continuous operation in turn

CHEN Qiwei, WANG Yali, ZHANG Jian. Innovative Application of Needlebeam Fullcircular Formwork Jumbos in Construction of Lining of Subsea Waterdiversion Tunnel[J]. Tunnel Construction, 2013, 33(8): 690-695.

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Innovative Application of Needlebeam Fullcircular Formwork Jumbos in Construction of Lining of Subsea Waterdiversion Tunnel

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