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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Bibliographic Details
Published inMéitàn kēxué jìshù Vol. 52; no. 3; pp. 53 - 62
Main Authors Hailiang XU, Hanjun GAO, Yimin SONG, Dong AN, Xinlei ZHENG
Format Journal Article
LanguageChinese
Published Editorial Department of Coal Science and Technology 01.03.2024
Subjects
concrete-filled steel tube
energy-absorbing components
roadway support
rock burst prevention design
rock bursts
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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
ISSN:0253-2336
DOI:10.13199/j.cnki.cst.2023-0487