Seismic Response of a Water Transmission Pipeline Across a Fault Zone Adopting a Large-Scale Vibration Table Test
The seismic response is generally amplified significantly near the fault zone due to the influence of discontinuous interfaces and weak-broken geotechnical structures, which imposes a severe geologic hazard risk on the engineering crossing the fault. The Hanjiang to Weihe River Project (phase II) cr...
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| Format: | Article |
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Frontiers Media S.A.
2021-11-01
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| Series: | Frontiers in Earth Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2021.777551/full |
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| author | Longsheng Deng Longsheng Deng Wenzhong Zhang Wenzhong Zhang Yan Dai Wen Fan Wen Fan Yubo Li Yubo Li Sen Ren Pei Li |
| author_facet | Longsheng Deng Longsheng Deng Wenzhong Zhang Wenzhong Zhang Yan Dai Wen Fan Wen Fan Yubo Li Yubo Li Sen Ren Pei Li |
| author_sort | Longsheng Deng |
| collection | DOAJ |
| description | The seismic response is generally amplified significantly near the fault zone due to the influence of discontinuous interfaces and weak-broken geotechnical structures, which imposes a severe geologic hazard risk on the engineering crossing the fault. The Hanjiang to Weihe River Project (phase II) crosses many high seismic intensity regions and intersects with eight large-scale regional active faults. Seismic fortification of the pipelines across the fault zone is significant for the design and construction of the project. A large-scale vibration table test was adopted to investigate the seismic response and fault influences. The responses of accelerations, dynamic stresses, strains, and water pressures were obtained. The results show that the dynamic responses were amplified significantly by the fault zone and the hanging wall. The influence range of fault on acceleration response is approximately four times the fault width. The acceleration amplification ratio in the fault zone generally exceeds 1.35, even reaching 1.8, and the hanging wall amplification ratio is approximately 1.2. The dynamic soil pressure primarily depends on the acceleration distribution and is apparently influenced by pipeline location and model inhomogeneity. The pipeline is bent slightly along the axial direction, accompanied by expansion and shrinkage in the radial direction. The maximum tensile and compressive strains appear at the lower and upper pipeline boundaries near the middle section, respectively. Massive y-direction cracks developed in the soil, accompanied by slight seismic subsidence. The research findings could provide reasonable parameters for the seismic design and construction of the project. |
| first_indexed | 2024-12-13T16:22:41Z |
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| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-12-13T16:22:41Z |
| publishDate | 2021-11-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Earth Science |
| spelling | doaj.art-d3de41607e584fe99f13c8320fb9a1482022-12-21T23:38:40ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632021-11-01910.3389/feart.2021.777551777551Seismic Response of a Water Transmission Pipeline Across a Fault Zone Adopting a Large-Scale Vibration Table TestLongsheng Deng0Longsheng Deng1Wenzhong Zhang2Wenzhong Zhang3Yan Dai4Wen Fan5Wen Fan6Yubo Li7Yubo Li8Sen Ren9Pei Li10School of Geological Engineering and Geomatics, Chang’An University, Xi’an, ChinaMine Geological Disasters Mechanism and Prevention Key Laboratory, Xi’an, ChinaChina Railway First Survey and Design Institute Group Co., Ltd., Xi’an, ChinaShaanxi Railway and Underground Traffic Engineering Key Laboratory (FSDI), Xi’an, ChinaSchool of Geological Engineering and Geomatics, Chang’An University, Xi’an, ChinaSchool of Geological Engineering and Geomatics, Chang’An University, Xi’an, ChinaMine Geological Disasters Mechanism and Prevention Key Laboratory, Xi’an, ChinaChina Railway First Survey and Design Institute Group Co., Ltd., Xi’an, ChinaShaanxi Railway and Underground Traffic Engineering Key Laboratory (FSDI), Xi’an, ChinaSchool of Geological Engineering and Geomatics, Chang’An University, Xi’an, ChinaSchool of Geological Engineering and Geomatics, Chang’An University, Xi’an, ChinaThe seismic response is generally amplified significantly near the fault zone due to the influence of discontinuous interfaces and weak-broken geotechnical structures, which imposes a severe geologic hazard risk on the engineering crossing the fault. The Hanjiang to Weihe River Project (phase II) crosses many high seismic intensity regions and intersects with eight large-scale regional active faults. Seismic fortification of the pipelines across the fault zone is significant for the design and construction of the project. A large-scale vibration table test was adopted to investigate the seismic response and fault influences. The responses of accelerations, dynamic stresses, strains, and water pressures were obtained. The results show that the dynamic responses were amplified significantly by the fault zone and the hanging wall. The influence range of fault on acceleration response is approximately four times the fault width. The acceleration amplification ratio in the fault zone generally exceeds 1.35, even reaching 1.8, and the hanging wall amplification ratio is approximately 1.2. The dynamic soil pressure primarily depends on the acceleration distribution and is apparently influenced by pipeline location and model inhomogeneity. The pipeline is bent slightly along the axial direction, accompanied by expansion and shrinkage in the radial direction. The maximum tensile and compressive strains appear at the lower and upper pipeline boundaries near the middle section, respectively. Massive y-direction cracks developed in the soil, accompanied by slight seismic subsidence. The research findings could provide reasonable parameters for the seismic design and construction of the project.https://www.frontiersin.org/articles/10.3389/feart.2021.777551/fullvibration table testseismic responsepipeline across fault zoneloess siteinfluence of fault |
| spellingShingle | Longsheng Deng Longsheng Deng Wenzhong Zhang Wenzhong Zhang Yan Dai Wen Fan Wen Fan Yubo Li Yubo Li Sen Ren Pei Li Seismic Response of a Water Transmission Pipeline Across a Fault Zone Adopting a Large-Scale Vibration Table Test Frontiers in Earth Science vibration table test seismic response pipeline across fault zone loess site influence of fault |
| title | Seismic Response of a Water Transmission Pipeline Across a Fault Zone Adopting a Large-Scale Vibration Table Test |
| title_full | Seismic Response of a Water Transmission Pipeline Across a Fault Zone Adopting a Large-Scale Vibration Table Test |
| title_fullStr | Seismic Response of a Water Transmission Pipeline Across a Fault Zone Adopting a Large-Scale Vibration Table Test |
| title_full_unstemmed | Seismic Response of a Water Transmission Pipeline Across a Fault Zone Adopting a Large-Scale Vibration Table Test |
| title_short | Seismic Response of a Water Transmission Pipeline Across a Fault Zone Adopting a Large-Scale Vibration Table Test |
| title_sort | seismic response of a water transmission pipeline across a fault zone adopting a large scale vibration table test |
| topic | vibration table test seismic response pipeline across fault zone loess site influence of fault |
| url | https://www.frontiersin.org/articles/10.3389/feart.2021.777551/full |
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