ABSTRACT
In tunnel and underground engineering, the grouted rock bolts are simulated as bolt element in finite element analysis. Usually, 2-node or 3-node element is used to represent the effect of the bolts in jointed rock mass. But the traditional type of element is not convenient to represent the true effect of bolts. In this paper, a new numerical model of rock bolts is proposed. This type of element is especially suitable for simulating the bolts in jointed rock. The new numerical model can be widely used in the finite element analyses of tunnel and underground engineering because of its efficiency, simplicity and flexibility.
