Study on the support performance of anti-impacting and energy-absorbing concrete-filled steel tube arches in roadways
In response to the problem of lack of shrinkable pressure-allowing performance of steel pipe concrete arch in the current roadway support, an anti-impacting and energy-absorbing steel pipe concrete arch structure is designed from the perspective of energy-absorbing pressure-allowing. The combination...
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Published in | Méitàn kēxué jìshù Vol. 52; no. 3; pp. 53 - 62 |
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Main Authors | , , , , |
Format | Journal Article |
Language | Chinese |
Published |
Editorial Department of Coal Science and Technology
01.03.2024
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Subjects | |
Online Access | Get full text |
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Summary: | In response to the problem of lack of shrinkable pressure-allowing performance of steel pipe concrete arch in the current roadway support, an anti-impacting and energy-absorbing steel pipe concrete arch structure is designed from the perspective of energy-absorbing pressure-allowing. The combination model of the new steel pipe concrete arch and the surrounding rock was established by Abaqus, and the support effect and impact resistance of the new arch on the roadway were compared and analyzed under both static and dynamic loading conditions. The conclusions are as follows: ① Designing the wall thickness and size of the energy-absorbing member according to the reasonable yielding resistance characteristics. Energy-absorbing components are installed at the connection between the upper arch and the middle of the bottom arc to prevent excessive bending from causing instability. The sleeve shape is designed as a pleated shape based on the U-shaped steel arch clamp structure, which achieves compression yield throug |
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ISSN: | 0253-2336 |
DOI: | 10.13199/j.cnki.cst.2023-0487 |