Shaking table tests on dynamic damage evolution mechanism of tunnel-slope system by seismic motions

Soil Dynamics and Earthquake Engineering, Journal Year: 2025, Volume and Issue: 196, P. 109468 - 109468

Published: April 23, 2025

Language: Английский

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Study on Construction Optimization Method of Tunnel Crossing Fault Fracture Zone

Periodica Polytechnica Civil Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 15, 2025

When a highway tunnel intersects fault fracture zone, the excavation process disrupts surrounding weak and fragmented rock mass, compromising stability of zone. This study compares deformation stress distribution using reserved core soil method, central diaphragm (CD) cross (CRD) method during through zones. Among these, CRD is identified as safest construction technique. Additionally, to address significant when tunneling zones, impact various pre-support advance reinforcement techniques on mass analyzed. By comparing full-ring grouting with optimized zone approach, findings demonstrate that significantly reduces disturbance excavation, thereby enhancing overall mass.

Language: Английский

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Predictive model for assessing the nonlinear surface displacement and mechanical response of shallowly buried tunnels under dip-slip fault dislocation

Soil Dynamics and Earthquake Engineering, Journal Year: 2025, Volume and Issue: 191, P. 109229 - 109229

Published: Jan. 31, 2025

Language: Английский

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Failure Mechanism of Sandy Soil Slopes Under High-Angle Normal Bedrock-Fault Dislocation: Physical Model Tests

Applied Sciences, Journal Year: 2025, Volume and Issue: 15(4), P. 1950 - 1950

Published: Feb. 13, 2025

Bedrock fault dislocation is a crucial structural factor influencing landslide movement. Accurately predicting the location and scale of rupture zones within slope body essential for effective construction design risk mitigation. Based on an analysis seismic damage in cross-bedrock faults, this article creatively realizes physical model test its covering layer site with soil at top toe caused by bedrock normal fault. Through test, macroscopic phenomena were observed, microscopic was obtained deploying sensors. The main results as follows: (i) evolutionary process instability mechanism could be divided into three stages: crack stage (Stage I), expansion penetration II), III). (ii) Two modes under identified, mode crest having greater impact slope. (iii) Inferring position faults through surface represents feasible supplementary method identifying seismogenic structures during field surveys. These research provide scientific basis stability assessment cross-fault slopes reinforcement disasters.

Language: Английский

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Numerical investigation on seismic damage of tunnels subjected to fault dislocation using the FDM-DEM approach

Computers and Geotechnics, Journal Year: 2025, Volume and Issue: 182, P. 107169 - 107169

Published: Feb. 25, 2025

Language: Английский

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Shaking table and pushover tests on subway station improved by truncated columns

Tunnelling and Underground Space Technology, Journal Year: 2025, Volume and Issue: 161, P. 106588 - 106588

Published: March 21, 2025

Language: Английский

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Dynamic response and failure mode of a novel seismic structure for fault-crossing tunnel: Theoretical analysis and shaking table test verification

Engineering Failure Analysis, Journal Year: 2025, Volume and Issue: unknown, P. 109671 - 109671

Published: May 1, 2025

Language: Английский

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Resilience assessment of the seismic damage mechanism of the Daliang high-speed railway tunnel in the 2022 Menyuan earthquake (Mw 6.7) in China

Transportation Geotechnics, Journal Year: 2024, Volume and Issue: unknown, P. 101417 - 101417

Published: Oct. 1, 2024

Language: Английский

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