Research and Application of Construction Technology of
LongSection&nbsp;and LargeTonnage Prefabricated Utility
Tunnels: a
Case Study of Xiong′an New Area, China

OUYANG Xiaoyong; XIAN Jianping; ZHU Li; SHAN Hongwei; WANG Gangfeng

doi:10.3973/j.issn.2096-4498.2022.08.017

2022 , Vol. 42 >Issue 8: 1473 - 1481

DOI: https://doi.org/10.3973/j.issn.2096-4498.2022.08.017

Research and Application of Construction Technology of LongSection and LargeTonnage Prefabricated Utility Tunnels: a Case Study of Xiong′an New Area, China

OUYANG Xiaoyong ,
XIAN Jianping ,
ZHU Li ,
SHAN Hongwei ,
WANG Gangfeng

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(1.CCCC Second Highway Engineering Co., Ltd., Xi′an 710065, Shaanxi, China;2. CCCC-SHEC Engineering Design and Research Institute, Xi′an 710065, Shaanxi, China;3. CCCC-SHEC Sixth Engineering Co., Ltd., Xi′an 710065, Shaanxi, China;4.Key Laboratory of Road-Construction Technology and Equipment of MOE,Chang′an University,Xi′an 710064,Shaanxi,China)

Online published: 2022-09-09

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Abstract

Many problems have arisen during the construction of the longsection and largetonnage prefabricated utility tunnel demonstration project in Xiong′an new area, China. Some of these problems are the difficulties in installation and control and the low efficiency of erection and construction. Therefore, a construction technology scheme of prefabricated utility tunnels involving transportation and erection above the utility tunnel is proposed. A prefabricated utility tunnel erection system is developed. This system integrates a 450 t tunnel crane, TLC600 tunnel transport vehicle, TLJ600 tunnelerecting machine, and prestress tension machine. It is revealed that the construction technology of transportation above the utility tunnel can eliminate the need to construct access roads and reduce the amount of earthwork excavation. The construction technology of erection above the utility tunnel can improve erection stability and meet the installation requirements and rotary hoisting of prefabricated tunnel segments. The automation level of erection and installation can be improved through the cooperative operation of construction equipment. The application results indicate that the proposed prefabricated tunnel construction technology makes possible the automatic safe erection of longsection and largetonnage prefabricated utility tunnels, ensures the hoisting stability and installation accuracy of the prefabricated tunnel segments, and improves the construction efficiency of monolithic largetonnage prefabricated utility tunnels.

Key words： longsection and largetonnage utility tunnel; prefabricated assembly; construction technology; construction equipment; erection and installation; prestress tension

Cite this article

OUYANG Xiaoyong , XIAN Jianping , ZHU Li , SHAN Hongwei , WANG Gangfeng .

Research and Application of Construction Technology of LongSection and LargeTonnage Prefabricated Utility Tunnels: a Case Study of Xiong′an New Area, China

[J]. Tunnel Construction, 2022 , 42(8) : 1473 -1481 . DOI: 10.3973/j.issn.2096-4498.2022.08.017

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