A pre-protection method for a pipe-jacking channel over shield tunnels

• Autorzy: Cui Yunliang , Yang Xukun , Wang Xinquan , Diao Hongguo , Li Xiao , Gao Yuanyuan

Identyfikatory

DOI

10.24425/bpasts.2023.148443

• Języki publikacji: EN

Abstrakty

EN

With the improvement of the planning level of underground space, the location of the planned under-crossing tunnel can be known in advance when constructing the upper-span tunnel. Therefore, pre-protection measures can be taken in advance during the construction of the upper-span tunnel. A new pre-protection method of a pipe-jacking channel was proposed to reduce the adverse effects of under-crossing shield tunnels. Numerical simulations of different pre-protection schemes were carried out using the finite element method to analyze its deformation control effect. The simulation results show that the deformation control effect of the gantry reinforcement scheme is the most significant. It is shown that the displacement of the pipe-jacking channel is more significantly suppressed with pre-protection measures than without preventive protection measures. The vertical displacement curve of the pipe-jacking channel exhibits a “W” shape after the construction of the double-lane shield underpass. By comparing the three different working conditions, it is found that the maximum vertical displacement and surface settlement of the pipe-jacking channel greatly reduced the gantry reinforcement pre-protection. Compared with Case 3, the effect of the pre-protection measures adopted in Case 2 was less obvious, which indicated that the form of the pre-protection had an important influence on controlling the deformation of the pipe-jacking channel.

Słowa kluczowe

EN

shield; pipe jacking; numerical simulation

PL

tarcza; symulacja numeryczna; przecisk hydrauliczny

• Wydawca: Polska Akademia Nauk, Wydział IV Nauk Technicznych
• Czasopismo: Bulletin of the Polish Academy of Sciences. Technical Sciences
• Rocznik: 2024
• Tom: Vol. 72, nr 2
• Strony: art. no. e148443
• Opis fizyczny: Bibliogr 33 poz., rys., tab.

Twórcy

autor

Cui Yunliang

• School of Engineering, Hangzhou City University, Hangzhou 310015, PR China
• Key Laboratory of Safe Construction and Intelligent Maintenance for Urban Shield Tunnels of Zhejiang Province, Hangzhou 310015, PR China

autor

Yang Xukun

• School of Engineering, Hangzhou City University, Hangzhou 310015, PR China
• Key Laboratory of Safe Construction and Intelligent Maintenance for Urban Shield Tunnels of Zhejiang Province, Hangzhou 310015, PR China

• https://orcid.org/0009-0006-7136-0435

autor

Wang Xinquan

• School of Engineering, Hangzhou City University, Hangzhou 310015, PR China
• Key Laboratory of Safe Construction and Intelligent Maintenance for Urban Shield Tunnels of Zhejiang Province, Hangzhou 310015, PR China

autor

Diao Hongguo

• School of Engineering, Hangzhou City University, Hangzhou 310015, PR China
• Key Laboratory of Safe Construction and Intelligent Maintenance for Urban Shield Tunnels of Zhejiang Province, Hangzhou 310015, PR China

autor

Li Xiao

• School of Engineering, Hangzhou City University, Hangzhou 310015, PR China
• Key Laboratory of Safe Construction and Intelligent Maintenance for Urban Shield Tunnels of Zhejiang Province, Hangzhou 310015, PR China

autor

Gao Yuanyuan

• School of Engineering, Hangzhou City University, Hangzhou 310015, PR China
• Key Laboratory of Safe Construction and Intelligent Maintenance for Urban Shield Tunnels of Zhejiang Province, Hangzhou 310015, PR China

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).