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A platform for research: civil engineering, architecture and urbanism
CFRP (carbon fiber reinforced plastic) group anchor anchoring system with V-shaped grooves on inner wall surfaces of anchorage devices
The invention discloses a CFRP group anchor anchoring system with a V-shaped groove in the inner wall face of an anchorage device, and relates to the technical field of coal mining, the CFRP group anchor anchoring system sequentially comprises a steel sleeve, a CFRP cable strand arranged in the steel sleeve, plugging pieces arranged at the two ends of the steel sleeve, and an annular groove formed in the axial direction of the steel sleeve, the cross section of the annular groove is V-shaped; the annular groove is formed in the inner wall of the steel sleeve; the outer diameter of the steel sleeve is cylindrical, due to the three-section type structure design of the novel anchorage device, the radial stress peak value of an anchoring area is obviously reduced, and meanwhile extrusion stress borne by CFRP cable strand materials is distributed in the longitudinal direction to achieve the more uniform effect. Meanwhile, compared with a traditional inner conical anchoring system with the maximum radial stress at the loading end, the novel anchoring system is just opposite in radial stress distribution rule, namely, the radial stress at the loading end is minimum, and the phenomenon of stress concentration at the loading end is effectively avoided.
本发明公开了一种锚具内壁面带V型凹槽的CFRP群锚锚固体系，涉及煤矿开采的技术领域，依次包括钢套筒，设置于钢套筒内部的所述CFRP索股，设置于所述钢套筒两端的封堵件，以及其中，沿着所述钢套筒的轴向设置有环状槽，所述环状槽的横截面呈V字状；所述环状槽开设在所述钢套筒的内壁；所述钢套筒外径呈圆柱状，新型锚具三段式结构的设计，使锚固区的径向应力峰值明显降低，同时使CFRP索股材受到的挤压应力沿纵向分布达到更加均匀的效果。同时相比于传统的内锥形锚固体系加载端径向应力最大，新型锚固体系的径向应力分布规律刚好相反，即加载端处的径向应力最小，有效避免了加载端应力集中的现象。
CFRP (carbon fiber reinforced plastic) group anchor anchoring system with V-shaped grooves on inner wall surfaces of anchorage devices
The invention discloses a CFRP group anchor anchoring system with a V-shaped groove in the inner wall face of an anchorage device, and relates to the technical field of coal mining, the CFRP group anchor anchoring system sequentially comprises a steel sleeve, a CFRP cable strand arranged in the steel sleeve, plugging pieces arranged at the two ends of the steel sleeve, and an annular groove formed in the axial direction of the steel sleeve, the cross section of the annular groove is V-shaped; the annular groove is formed in the inner wall of the steel sleeve; the outer diameter of the steel sleeve is cylindrical, due to the three-section type structure design of the novel anchorage device, the radial stress peak value of an anchoring area is obviously reduced, and meanwhile extrusion stress borne by CFRP cable strand materials is distributed in the longitudinal direction to achieve the more uniform effect. Meanwhile, compared with a traditional inner conical anchoring system with the maximum radial stress at the loading end, the novel anchoring system is just opposite in radial stress distribution rule, namely, the radial stress at the loading end is minimum, and the phenomenon of stress concentration at the loading end is effectively avoided.
本发明公开了一种锚具内壁面带V型凹槽的CFRP群锚锚固体系，涉及煤矿开采的技术领域，依次包括钢套筒，设置于钢套筒内部的所述CFRP索股，设置于所述钢套筒两端的封堵件，以及其中，沿着所述钢套筒的轴向设置有环状槽，所述环状槽的横截面呈V字状；所述环状槽开设在所述钢套筒的内壁；所述钢套筒外径呈圆柱状，新型锚具三段式结构的设计，使锚固区的径向应力峰值明显降低，同时使CFRP索股材受到的挤压应力沿纵向分布达到更加均匀的效果。同时相比于传统的内锥形锚固体系加载端径向应力最大，新型锚固体系的径向应力分布规律刚好相反，即加载端处的径向应力最小，有效避免了加载端应力集中的现象。
CFRP (carbon fiber reinforced plastic) group anchor anchoring system with V-shaped grooves on inner wall surfaces of anchorage devices
一种锚具内壁面带V型凹槽的CFRP群锚锚固体系
JIA LIJUN (author) / ZHANG WENCHAO (author) / XIAO RUCHENG (author) / XU LIPING (author) / PEI HUITENG (author) / YUAN SHANSHAN (author) / LI KEWEI (author) / LUO KEDIAN (author) / PENG ZHOU (author)
2024-12-03
Patent
Electronic Resource
Chinese
IPC:
E04C
STRUCTURAL ELEMENTS
,
Bauelemente
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