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针对锚固工程中遇到的动力问题,采用简谐动力波作用下的破坏试验,研究在动力作用下锚杆的锚固机理、锚杆剪应力分布规律及动态抗拔力;结果表明:在动力波作用下剪应力从锚杆端部到底端轮番增大,使锚杆剪应力沿全长均发挥作用,动力作用下抗拔力均比静态经验公式及静态试验结果大。
Aiming at the dynamic problems encountered in anchoring engineering, the failure test under the action of simple harmonic dynamic wave was adopted to study the anchoring mechanism of anchors, the distribution law of anchor shear stress and the dynamic pull-out force under the action of dynamic force. The results show that in dynamic waves, Under the action of shear stress from the end of the bolt to the end of the turns increase, so that the bolt shear stress along the entire length play a role in the anti-pull force than the static empirical formula and static test results.