Self-Anchored Prestressing Cables Experiment Research And Design

In modern anchor engineering, the prestressing cables are adopt of one of the important technique means, this papper comprehensively studies on structures of the prestressing cables that are widespreadly applied recently, and analyses their characteristic, the scope of application and existent problems. On these foundations, structures of the self-anchored prestressing cables, the self-anchored machine and the self-anchored principle are designed.That the spot experiment validates the mechanics model is better method to solve the structure design whether is reasonable, anchor mechanics model whether is reasonable will influence the anchor length directly and the engineering budget. Through the self-anchor merchine of indoor experiment analysis, it get reasonable structure size and the effect of the self-anchor machine. The analysis of the spot experiments data, explicitly find the relation self-anchor load and exert load, get to influence scope of the press stress in the cement slurry pillar and the interface cohesive distribution of the cement slurry pillar and rock(soil) masses. In experiment foundation, establish the mechanics model of the segment distribution of stress control in the self-anchor length, and combine analysis of the testing and attain to characteristic of self-anchor length, self-anchor force and self-anchor length.Based on analysis of experiment and theory, the procedure of the experiential design method and the segment distribution of stress control in the self-anchor length about the self-anchored prestressing cable are put forward.