ABSTRACT
This chapter is concerned with the stabilization of the foundations of bridges, pylons, and dams subjected to tension or compressive forces.
The uplift capacity of anchors in rock has been extensively investigated both theoretically and experimentally in the laboratory and in situ. Various approaches and their fundamental concepts to the design of anchor rocks with the consideration of anchor geometry and loading conditions are presented. Applications include the potential use of rockanchors as foundations of pylons and of tunnel-type anchorage for suspension bridges. A special emphasis is given to the possible failure modes, which are quite important for the selection of appropriate limiting equilibrium method.
A unified design procedure is presented for the utilization of rockanchors as foundations of pylons with the use of short-term and long-term laboratory experiments, in-situ explorations, analytical solutions for pull-out capacity and the consideration of interface shear strength in boreholes, in which rock anchors are embedded.
The analyses of the dam foundations are done through some limiting equilibrium approaches for simple conditions and the use of numerical analyses with the consideration of discontinuities in rock mass for complex conditions.
In the final part, rock socket with end-bearing is considered and closed form solutions were developed.
