Design and Application Technology of Fullsection
Large Hydraulic Formwork Trolley for Immersed Tunnel
Segment Prefabrication

ZHU Jinbo; WANG Cong

doi:10.3973/j.issn.2096-4498.2020.12.017

2020 , Vol. 40 >Issue 12: 1817 - 1823

DOI: https://doi.org/10.3973/j.issn.2096-4498.2020.12.017

Design and Application Technology of Fullsection Large Hydraulic Formwork Trolley for Immersed Tunnel Segment Prefabrication

ZHU Jinbo ,
WANG Cong

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(1. No. 5 Branch of CCCC Second Harbor Engineering Co., Ltd., Wuhan 430040, Hubei, China; 2. CCCC Second Harbor Engineering Company Ltd., Wuhan 430040, Hubei, China; 3. Key Laboratory of Largespan Bridge Construction Technology, Wuhan 430040, Hubei, China; 4. Research and Development Center of Transport Industry of Intelligent Manufacturing Technologies of Transport Infrastructure, Wuhan 430040, Hubei, China)

Online published: 2021-01-03

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Abstract

The prefabrication of immersed tube in stages always has long construction term and greater risk of water seepage at longitudinal construction joints, while for integral fullsection prefabrication, it is difficult to meet the requirements of fullface prefabrication quality and schedule with conventional steelwood mixed formwork system. To solve these problems, a fullsection hydraulic formwork trolley with selfwalking function is developed. The inner formwork trolley adopts triangular truss structure and hydraulic crawlertype selfpropelled system to realize rapid shift. The outer formwork trolley adopts inclined support truss without tie rod to reduce the risk of water seepage. The end formwork adopts combtooth type composite steel to increase turnover utilization rate. Meanwhile, the outer formwork trolley is helpful for system conversion and saving construction period. Finally, the finite element ANSYS is used to simulate and calculate the deformation and displacement of formwork in the process of concrete pouring. The practice results show that the formwork trolley used can guarantee successful prefabrication in fullsection of immersed tunnel segment and concrete pouring safety.

Key words： immersed tunnel segment prefabrication; fullsection formwork trolley; triangle truss; hydraulic selfpropelled system; outer formwork without tie rod; combshaped steel end mould

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ZHU Jinbo , WANG Cong . Design and Application Technology of Fullsection Large Hydraulic Formwork Trolley for Immersed Tunnel Segment Prefabrication[J]. Tunnel Construction, 2020 , 40(12) : 1817 -1823 . DOI: 10.3973/j.issn.2096-4498.2020.12.017

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