TANG Peng,YANG Ming,ZHUANG Haiyang,et al.Lateral Seismic Performance of the Utility Tunnel Crossing the Yangzi River[J].Journal of Disaster Prevention and Mitigation Engineering,2022,42(03):507-515.
TANG Peng,YANG Ming,ZHUANG Haiyang,et al.Lateral Seismic Performance of the Utility Tunnel Crossing the Yangzi River[J].Journal of Disaster Prevention and Mitigation Engineering,2022,42(03):507-515. DOI: 10.13409/j.cnki.jdpme.202006025.
Lateral Seismic Performance of the Utility Tunnel Crossing the Yangzi River
Considering the special design of Gas Insulated Line (GIL), a finite element model was made to simulate the soil-GIL dynamic interaction. The seismic performance of GIL was investigated by analyzing the deformation of structures, the opening of shield segments, and the seismic damage to structures. The results show that the interior concrete support was prone to damage under earthquakes. The shield tunnel of GIL was damaged more seriously when it across soft soils. Meanwhile, due to the constrain of the interior concrete support, the openings of shield segments at the tunnel bottom were smaller than that at the tunnel crown, and the outside permanent openings of shield segments were larger than that in the inside opening of shield segments.
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