Analysis of Energy-absorption and Rockburst Resistance of Sand-filled Steel Tube Arches and Damping Performance of Multi-arch Structures

Hai-liang XU , Xin-lei ZHENG , Dong AN , Han-jun GAO

Science Technology and Engineering ›› 2025, Vol. 25 ›› Issue (18) : 7558 -7565.

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Science Technology and Engineering ›› 2025, Vol. 25 ›› Issue (18) : 7558-7565 DOI: 10.12404/j.issn.1671-1815.2405856
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Analysis of Energy-absorption and Rockburst Resistance of Sand-filled Steel Tube Arches and Damping Performance of Multi-arch Structures
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Abstract

To address the reduction in support bearing capacity caused by concrete shrinkage and to improve the damping performance of supports under mining-induced seismic conditions, this study focuses on the energy-absorbing and shock-resisting performance of single arch sand-filled steel tubular frames and the damping performance of multi-arch combined support systems. Finite element software was employed to establish models of surrounding rock and sand-filled steel tubular frames, as well as multi-arch support systems connected with flexible cables and dampers. The performance of sand-filled steel tubular frames under static and dynamic loading, as well as their seismic resistance under mining-induced tremors, was investigated. The results indicate that the deformation of the tunnel under static loading remains stable, while the support effectiveness is satisfactory under impact loading except for relatively large deformations at the crown. Under static and dynamic loading, the equivalent plastic strain at the crown of the sand-filled steel tubular frames shows a significant increase, while changes in other areas remain minimal, demonstrating good load-bearing capacity. In the three-arch support system, the third arch experiences reduced vibration amplitude due to the dual energy dissipation effects of flexible cables and dampers. Calculations of the safety factor at the maximum shear stress of the tunnel reveal a significant improvement in the seismic performance of adjacent supports, providing insights for further studies on support damping mechanisms.

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filled steel pipe / energy dissipation / energy dissipation and seismic mitigation / damping / safety factor

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Hai-liang XU, Xin-lei ZHENG, Dong AN, Han-jun GAO. Analysis of Energy-absorption and Rockburst Resistance of Sand-filled Steel Tube Arches and Damping Performance of Multi-arch Structures. Science Technology and Engineering, 2025, 25(18): 7558-7565 DOI:10.12404/j.issn.1671-1815.2405856

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