Blast responses of shallow-buried prefabricated modular concrete tunnels reinforced by BFRP-steel bars
This paper reports the anti-blast performance of shallow-buried prefabricated modular tunnel reinforced by basalt fiber-reinforced polymer (BFRP) -steel bars. Three concrete arch members with steel bars and three concrete arch members with BFRP-steel bars were fabricated, with the other arch paramet...
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2022-04-01
|
| Series: | Underground Space |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S246796742100057X |
| _version_ | 1827885740614221824 |
|---|---|
| author | Chengjie Zhao Zexun Tang Peng Wang Jiang Feng Jiannan Zhou Xinli Kong Hansheng Geng Fengnian Jin Hualin Fan |
| author_facet | Chengjie Zhao Zexun Tang Peng Wang Jiang Feng Jiannan Zhou Xinli Kong Hansheng Geng Fengnian Jin Hualin Fan |
| author_sort | Chengjie Zhao |
| collection | DOAJ |
| description | This paper reports the anti-blast performance of shallow-buried prefabricated modular tunnel reinforced by basalt fiber-reinforced polymer (BFRP) -steel bars. Three concrete arch members with steel bars and three concrete arch members with BFRP-steel bars were fabricated, with the other arch parameters kept constant. The three identical arches were assembled into an integral structure and then buried in soil for field anti-blast experiments. Through the experiment, the pressure on the vault, the displacement and acceleration of the vault, the strain in the reinforcement bars and the macroscopic damage of the arches under the blast load were determined. To evaluate the damage of the arch tunnel, a residual load-bearing capacity test was conducted on the arch members after the explosion experiment. The experimental results showed that the BFRP-steel bars reinforced concrete arch exhibited a higher load-bearing capacity and more safety redundancy than the steel bars reinforced concrete arch, and that the BFRP-steel bars could inhibit the occurrence of concrete cracks to a certain extent. A comparison between the arches assembled at different positions showed that the prefabricated modular tunnel can be simplified directly as a two-dimensional arch structure under the blast load for analysis and calculation. |
| first_indexed | 2024-03-12T19:51:02Z |
| format | Article |
| id | doaj.art-6d2510e9fb85490a8d115043b06547e3 |
| institution | Directory Open Access Journal |
| issn | 2467-9674 |
| language | English |
| last_indexed | 2024-03-12T19:51:02Z |
| publishDate | 2022-04-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Underground Space |
| spelling | doaj.art-6d2510e9fb85490a8d115043b06547e32023-08-02T03:09:45ZengKeAi Communications Co., Ltd.Underground Space2467-96742022-04-0172184198Blast responses of shallow-buried prefabricated modular concrete tunnels reinforced by BFRP-steel barsChengjie Zhao0Zexun Tang1Peng Wang2Jiang Feng3Jiannan Zhou4Xinli Kong5Hansheng Geng6Fengnian Jin7Hualin Fan8State Key Laboratory for Disaster Prevention & Mitigation of Explosion & Impact, Army Engineering University of PLA, Nanjing 210007, ChinaState Key Laboratory for Disaster Prevention & Mitigation of Explosion & Impact, Army Engineering University of PLA, Nanjing 210007, ChinaState Key Laboratory for Disaster Prevention & Mitigation of Explosion & Impact, Army Engineering University of PLA, Nanjing 210007, China; Corresponding authors at: Department of Civil Engineering, Nanyang Institute of Technology, Nanyang 473004, China (H. Fan).Rocket Force University of Engineering, Xi’an 710025, ChinaState Key Laboratory for Disaster Prevention & Mitigation of Explosion & Impact, Army Engineering University of PLA, Nanjing 210007, ChinaState Key Laboratory for Disaster Prevention & Mitigation of Explosion & Impact, Army Engineering University of PLA, Nanjing 210007, ChinaState Key Laboratory for Disaster Prevention & Mitigation of Explosion & Impact, Army Engineering University of PLA, Nanjing 210007, ChinaState Key Laboratory for Disaster Prevention & Mitigation of Explosion & Impact, Army Engineering University of PLA, Nanjing 210007, ChinaDepartment of Civil Engineering, Nanyang Institute of Technology, Nanyang 473004, China; State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China; Corresponding authors at: Department of Civil Engineering, Nanyang Institute of Technology, Nanyang 473004, China (H. Fan).This paper reports the anti-blast performance of shallow-buried prefabricated modular tunnel reinforced by basalt fiber-reinforced polymer (BFRP) -steel bars. Three concrete arch members with steel bars and three concrete arch members with BFRP-steel bars were fabricated, with the other arch parameters kept constant. The three identical arches were assembled into an integral structure and then buried in soil for field anti-blast experiments. Through the experiment, the pressure on the vault, the displacement and acceleration of the vault, the strain in the reinforcement bars and the macroscopic damage of the arches under the blast load were determined. To evaluate the damage of the arch tunnel, a residual load-bearing capacity test was conducted on the arch members after the explosion experiment. The experimental results showed that the BFRP-steel bars reinforced concrete arch exhibited a higher load-bearing capacity and more safety redundancy than the steel bars reinforced concrete arch, and that the BFRP-steel bars could inhibit the occurrence of concrete cracks to a certain extent. A comparison between the arches assembled at different positions showed that the prefabricated modular tunnel can be simplified directly as a two-dimensional arch structure under the blast load for analysis and calculation.http://www.sciencedirect.com/science/article/pii/S246796742100057XBFRP-steel barsConcrete archShallow-buried protective tunnelAnti-blast performance |
| spellingShingle | Chengjie Zhao Zexun Tang Peng Wang Jiang Feng Jiannan Zhou Xinli Kong Hansheng Geng Fengnian Jin Hualin Fan Blast responses of shallow-buried prefabricated modular concrete tunnels reinforced by BFRP-steel bars Underground Space BFRP-steel bars Concrete arch Shallow-buried protective tunnel Anti-blast performance |
| title | Blast responses of shallow-buried prefabricated modular concrete tunnels reinforced by BFRP-steel bars |
| title_full | Blast responses of shallow-buried prefabricated modular concrete tunnels reinforced by BFRP-steel bars |
| title_fullStr | Blast responses of shallow-buried prefabricated modular concrete tunnels reinforced by BFRP-steel bars |
| title_full_unstemmed | Blast responses of shallow-buried prefabricated modular concrete tunnels reinforced by BFRP-steel bars |
| title_short | Blast responses of shallow-buried prefabricated modular concrete tunnels reinforced by BFRP-steel bars |
| title_sort | blast responses of shallow buried prefabricated modular concrete tunnels reinforced by bfrp steel bars |
| topic | BFRP-steel bars Concrete arch Shallow-buried protective tunnel Anti-blast performance |
| url | http://www.sciencedirect.com/science/article/pii/S246796742100057X |
| work_keys_str_mv | AT chengjiezhao blastresponsesofshallowburiedprefabricatedmodularconcretetunnelsreinforcedbybfrpsteelbars AT zexuntang blastresponsesofshallowburiedprefabricatedmodularconcretetunnelsreinforcedbybfrpsteelbars AT pengwang blastresponsesofshallowburiedprefabricatedmodularconcretetunnelsreinforcedbybfrpsteelbars AT jiangfeng blastresponsesofshallowburiedprefabricatedmodularconcretetunnelsreinforcedbybfrpsteelbars AT jiannanzhou blastresponsesofshallowburiedprefabricatedmodularconcretetunnelsreinforcedbybfrpsteelbars AT xinlikong blastresponsesofshallowburiedprefabricatedmodularconcretetunnelsreinforcedbybfrpsteelbars AT hanshenggeng blastresponsesofshallowburiedprefabricatedmodularconcretetunnelsreinforcedbybfrpsteelbars AT fengnianjin blastresponsesofshallowburiedprefabricatedmodularconcretetunnelsreinforcedbybfrpsteelbars AT hualinfan blastresponsesofshallowburiedprefabricatedmodularconcretetunnelsreinforcedbybfrpsteelbars |