STUDY ON GROUND SETTLEMENT OF ENGINEERING SITE OF METRO TUNNEL ADJACENT TO GROUND FISSURE ZONE UNDER THE ACTION OF EARTHQUAKE

CHEN Xing; HUANG Qiangbing; LIU Nina; ZHAO Teng

doi:10.12090/j.issn.1006-6616.2018.24.05.073

Volume 24 Issue 5

Oct. 2018

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Article Navigation > Journal of Geomechanics > 2018 > 24(5): 714-722

CHEN Xing, HUANG Qiangbing, LIU Nina, et al., 2018. STUDY ON GROUND SETTLEMENT OF ENGINEERING SITE OF METRO TUNNEL ADJACENT TO GROUND FISSURE ZONE UNDER THE ACTION OF EARTHQUAKE. Journal of Geomechanics, 24 (5): 714-722. DOI: 10.12090/j.issn.1006-6616.2018.24.05.073

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STUDY ON GROUND SETTLEMENT OF ENGINEERING SITE OF METRO TUNNEL ADJACENT TO GROUND FISSURE ZONE UNDER THE ACTION OF EARTHQUAKE

doi: 10.12090/j.issn.1006-6616.2018.24.05.073

CHEN Xing^1
,,
HUANG Qiangbing^{1, 2
,
,},
LIU Nina^{1, 2},
ZHAO Teng³

1.
College of Geology Engineering and Geomatics, Chang'an University, Xi'an 710054, Shaanxi, China
2.
Key Laboratory of Western Mineral Resources and Geological Engineering of Ministry of Education, Chang'an University, Xi'an 710054, Shaanxi, China
3.
College of Civil Engineering, Tongji University, Shanghai 200092, China

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Abstract

Abstract

In order to study the law of ground settlement at the top of subway tunnel located on the hanging wall of ground fissure under the coupling action of earthquake and ground fissure and its influence on nearby buildings, taking Xi'an Metro Line 3 adjacent to the ground fissure site as the engineering background, with FLAC3D finite difference software and theoretical analysis, the ground settlement of engineering site with a metro tunnel adjacent to ground fissure zone under the action of three different seismic waves, namely Xi'an artificial seismic wave, El Centro wave and Kobe wave, are studied. The results show that the settlement of strata at the top of subway tunnel with a certain range is significantly greater than that of the surrounding strata under the action of earthquake, and a settlement groove with a width of 9~16 m is formed. The width of the settlement groove under the action of El Centro wave is the largest, about 15.9 m, and the Xi'an artificial synthetic seismic wave that exceed the probability of 10% is the second, about 11.6 m; The width of the settlement groove under the action of the Kobe wave is the smallest, about 9.5 m. The settlement law of the settlement groove accord with the peck formula. The settlement of the site surface with a range of 20 m at the top of the metro tunnel is the largest as a result of the coupling action of earthquake and ground fissure.
- metro tunnel,
- ground fissure,
- seismic wave,
- ground settlement,
- numerical simulation

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References(16)

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