ISSN 2096-4498
CN 44-1745/U
Tunnel Construction ›› 2022, Vol. 42 ›› Issue (11): 1906-1912.DOI: 10.3973/j.issn.2096-4498.2022.11.01
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GUO Jianmin, SHAN Lianjun
Online:
Published:
Abstract: A case study is conducted on the Pazhou west tunnel project in Guangzhou, China, and the structural type and prefabrication scheme of immersed tunnels in urban core areas are comprehensively compared to select an optimal structural type and prefabrication scheme of immersed tunnels in the urban core area. Then, the advantages and disadvantages of steelshell composite structure (secondary pouring concrete), steelshell composite structure (primary pouring concrete), reinforced concrete structure (new dry dock), and reinforced concrete structure (mobile dry dock) are analyzed and compared. The final scheme is selected as the steelshell composite structure (secondary pouring concrete). The difficulties of dry dock land shortage in the construction project of immersed tunnel in the urban core area can be solved by adopting the structural type of smallsection doublelayer steelshell concrete immersed tunnel and employing advance construction technologies, such as longdistance high freeboard transportation and secondary floating concrete pouring. The method adopted has the advantages of a short construction period, less river dredging, reliable engineering quality, and environmental protection, which will be widely used in the immersed tube tunnel under inland rivers.
Key words: immersed tunnel, structural type selection, element prefabrication, steel shellconcrete composite structure; floating
GUO Jianmin, SHAN Lianjun. Structure Type and Prefabrication Scheme of Immersed Tunnels in Urban Core Areas: a Case Study of Pazhou West Tunnel Project in Guangzhou, China[J]. Tunnel Construction, 2022, 42(11): 1906-1912.
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URL: http://www.suidaojs.com/EN/10.3973/j.issn.2096-4498.2022.11.01
http://www.suidaojs.com/EN/Y2022/V42/I11/1906
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