2024 Volume 80 Issue 13 Article ID: 23-13136
In this research, as one of the studies on the seismic performance of existing PC road bridges designed based on the level 1 seismic ground motion, load tests were conducted on anchor bolts connecting the bearings and the superstructures with five combinations of vertical seismic force and horizontal seismic force. The load-carrying capacity and damage behavior of the anchor bolts up to the ultimate stage were confirmed and the seismic performance was investigated based on the test results. It was confirmed that the ratio of maximum tensile load to dead load was 1.05 in the case of vertical load only, and the ratio of maximum horizontal load to dead load was 1.16 to 2.06 in the four cases of vertical load and horizontal load. It is considered that the anchor bolts can be expected to resist not only the level 1 seismic ground motion considered in the design, but also the level 2 seismic ground motion of the current design standard.
