Semi-active variable-stiffness energy dissipation and seismic mitigation control anchor bolt
A variable stiffness, semi-active technology, applied in the field of permanent support engineering, semi-active variable stiffness, energy dissipation and shock-absorbing control bolts, can solve problems such as excessive deformation of unstable rock and soil, instability and collapse, and achieve space Effects of small size, reduced hazards, and simple structure
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[0007] Such as figure 2 As shown, the present invention is A semi-active variable stiffness energy dissipation shock-absorbing control anchor rod, the control anchor rod is composed of a controller 1, a communication line 2, a sensor 3, a variable stiffness control device 12, a sleeve 20, a hollow anchor pipe 5, an anchor 10, an anchor The spring 11 and the support structure 4 are composed; wherein the variable stiffness control device 12 is composed of a hydraulic cylinder 13, a double rod piston 14, an oil liquid 16, a bypass pipeline 17, an electro-hydraulic servo valve 18, a first stiffness spring 19a, a second Stiffness spring 19b, support box 21 and backing plate 22 connected by bolts 23; controller 1 is a PC with A / D and D / A data acquisition and conversion board, installed with control algorithm and electro-hydraulic servo valve The PC of the driving software of 18 can control the open / close state of electro-hydraulic servo valve 18; The shape of double rod piston 14...
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