Mechanical Behavior Analysis of Fully Grouted Bolts under Axial Cyclic Load

Fully grouted bolts are widely used in engineering. In order to deeply understand the load-transfer mechanism of a fully bolt, it is necessary analyze and study its mechanical behavior under axial cyclic load. First all, based on idea discretization force balance analysis each mass spring element, this proposes method for analyzing bolt—the element method. Second, model bolt established by using method, assuming that sidewall rock soil connected tangential linear springs. The analytical solutions displacement, force, shear-stress distribution before after damage given. It found results proposed paper have great relationship with ?, which square root ratio stiffness k?u ku. Further more suitable two working conditions ? ? 0 1, between pull-out K was these conditions. Finally, rationality accuracy verified an typical test cases 1.