A NOTE ON THE FRICTION ANCHORED DOWEL WITH SMALLER DIAMETER

In this paper, the disadvantages of the common friction anchored dowe with 38～45mm diameter, such as the unreasonable parameters of its structure, a larger drain on steel material and higher cost, have been discussed based on the mechanical model and the analytical solutions of this type of bolt. Comparison with those disadvantages, the friction anchored dowel with smaller diameter (29～32mm) has appropriate advantages, such as saving steel material, cutting down cost, picking up the speed of drilling holes and increasing the anchorage of the bolts. The formulations for the structure parameter of a friction anchored dowel with smaller diameter have been developed, and the problems on the technological requirements and the equipments in application of the bolt, which should be solved, have been discussed carefully.