Anchoring method applicable to large-tonnage FRP inhaul cable
An anchoring method and large-tonnage technology, applied in the direction of sheet pile walls, structural elements, building components, etc., can solve problems such as stress concentration, and achieve the effects of regular cross-sectional shape, good bonding performance, and simple and convenient molding process
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Example Embodiment
[0034] Example 1: Please refer to figure 1 , figure 2 , image 3 , Figure 4 with Figure 5 Shown. figure 1 It is a schematic diagram of the FRP cable anchor structure of the present invention, figure 2 It is a schematic diagram of the winding fiber anchoring in the first embodiment of the present invention, image 3 It is a schematic diagram of the steel clip structure of the first embodiment of the present invention, Figure 4 It is a schematic diagram of the steel anchor cup structure of the first embodiment of the present invention, Figure 5 It is a schematic diagram of the notch effect of the FRP bar / cable anchor system. The load transfer medium 300 used in this embodiment is a steel clip 3, which includes an FRP cable 1, a molded protective layer 2, a tapered steel clip 3, and a steel sleeve 4. First, wind the fiber roving 6 of the prepreg resin 5 on the surface of the FRP cable, and select different winding layers according to the diameter of the anchored FRP cable. Aft...
Example Embodiment
[0035] Example 2: Please refer to Image 6 Shown. The basic structure is the same as that of Embodiment 1, except that the load transfer medium 3 is an expansion material 5. First, wind the fiber roving of pre-impregnated resin on the surface of the FRP cable, choose different winding layers according to the diameter of the anchored FRP cable, and shape it through a molding process. After the FRP cable 1 and the protective layer 2 are molded into a whole, the FRP is drawn The interface between the cable 1 and the protective transition layer 2 has extremely high shear strength, forming a stress buffer layer to indirectly protect the FRP cable. Then, the expansion material 5 is poured between the steel anchor cup 4 and the FRP cable 1 with the protective transition layer 2 after being molded, and the positive interface pressure generated by the expansion material 5 after solidification and expansion is used to provide anchoring force, that is, an FRP cable anchor system is formed...
Example Embodiment
[0036] Example 3: Please refer to Figure 7 Shown. The basic structure is the same as that of Embodiment 1, the difference is that the load transfer medium 3 is a material 6 with a radial stiffness change. Figure 8 , Picture 9 , Picture 10 Is the distribution curve of radial compressive stress and shear stress on the surface of the FRP cable. The solid line is the load transfer material A without mechanical performance design, and the dashed line is the load transfer material B designed according to the stress distribution in the anchorage zone. The anchor system can effectively reduce the stress peak at the beginning of the anchoring area under load, which is conducive to the stress of the anisotropic FRP cable in the anchoring area, and can anchor multiple FRP cables.
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