Abstract
A resin has been filled into the clearance between bolt and bolt hole in bolted connection of timber member to prevent a backlash by the clearance, and we have proved that the resin improve a performance of the bolted connection. However, stress concentration occurred by bolt bending at both sides of bolt hole in the case of resin type was remarkably higher than driven type. Furthermore, bolts have been set at the center of the bolt hole in these tests, but it was difficult to put the bolt on the center of bolt hole in construction. In this paper, we proposed tapered hole that was made at both end of bolt hole to relax the stress concentration. As a result, the effect of the resin was improved more by making taper and the concern for the position gap of the bolt was wiped out.
