IDEAS home Printed from https://ideas.repec.org/a/gam/jsusta/v14y2022i16p9942-d885833.html
   My bibliography  Save this article

Deformation Characteristics and Damage Assessment of Prefabricated Frame Tunnels after Central and External Explosions

Author

Listed:
  • Zhen Huang

    (Key Laboratory of Disaster Prevention and Structural Safety, School of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China)

  • Zhaojian Hu

    (Key Laboratory of Disaster Prevention and Structural Safety, School of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China)

  • Chenlong Zhang

    (Key Laboratory of Disaster Prevention and Structural Safety, School of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China)

  • Zhijun Pan

    (Guangxi Road Construction Engineering Group Co., Ltd., Nanning 530001, China)

  • Jie Hu

    (Guangxi Road Construction Engineering Group Co., Ltd., Nanning 530001, China)

  • Xinpeng Chen

    (Guangxi Road Construction Engineering Group Co., Ltd., Nanning 530001, China)

Abstract

The urban social environment is complex and changeable, and there are accidental and non-accidental explosion risks in tunnels. Performance analysis and assessment after tunnel explosions has become important work. In this study, a prefabricated frame structure (single-layer and double-layer) for urban road tunnels was designed. A three-dimensional refined dynamic response numerical model of a frame tunnel considering the joint effect was established, and the reliability of the modeling method was verified by a full-scale explosion test. Considering factors such as the explosion equivalent (100, 200, 300, and 400 kg), explosion distance (3, 6, 9, and 12 m), and central and external explosions, the deformation characteristics and damage evolution law of the prefabricated frame tunnel after the explosions were explored. The deformation failure mode of the prefabricated frame tunnel was analyzed. The study shows that the roof of a single-layer tunnel and the mid-partition of a double-layer tunnel are weak components of a prefabricated frame tunnel with steel column joints under a central explosion load. The deformation and damage at tunnel joints are greater than those at other positions. Under an external explosion load, the closer the explosion point is, the greater the damage and deformation of the prefabricated frame tunnel lining are. Furthermore, showing a high degree of locality. With the equal amplitude increase of the detonation distance (3–6 m, 6–9 m, 9–12 m), the lining displacement is relatively reduced by about 75.7%, 39.9%, and 10.0%, respectively, and the lining deformation is mainly represented by the overall bending deformation.

Suggested Citation

  • Zhen Huang & Zhaojian Hu & Chenlong Zhang & Zhijun Pan & Jie Hu & Xinpeng Chen, 2022. "Deformation Characteristics and Damage Assessment of Prefabricated Frame Tunnels after Central and External Explosions," Sustainability, MDPI, vol. 14(16), pages 1-21, August.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:16:p:9942-:d:885833
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2071-1050/14/16/9942/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/2071-1050/14/16/9942/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Jinjin Ge & Ying Xu & Wei Huang & Haibo Wang & Rongzhou Yang & Zhongyi Zhang, 2021. "Experimental Study on Crack Propagation of Rock by Blasting under Bidirectional Equal Confining Pressure Load," Sustainability, MDPI, vol. 13(21), pages 1-18, November.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Rongjian Pan & Peiyu Wang & Zilong Zhou & Riyan Lan & Lu Chen & Hongquan Yang & Cuigang Chen & Jinkun Zhang & Yang Liu, 2023. "Effects of Confining Stress on Blast-Induced Damage Distribution of Rock with Discontinuity," Sustainability, MDPI, vol. 15(17), pages 1-22, September.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jsusta:v:14:y:2022:i:16:p:9942-:d:885833. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.