| Title |
Mechanical Characteristics of Basalt in Jeju Island with Relation to Porosity |
| Authors |
문경태(Moon, Kyoungtae) ; 박상렬(Park, Sangyeol) ; 김영찬(Kim, Youngchan) ; 양순보(Yang, Soonbo) |
| DOI |
https://doi.org/10.12652/Ksce.2014.34.4.1215 |
| Keywords |
현무암;공극률;일축압축강도;탄성계수;탄성파속도 Basalt;Porosity;Unconfined compressive strength;Elastic modulus;Elastic wave velocity |
| Abstract |
Continuous welded rail on bridge structure experiences typically a large amount of additional longitudinal axial forces due to longitudinal track-bridge interaction under temperature and traction/braking load effect. In order to reduce the additional axial forces, special type of fastener, such as ZLR and RLR or rail expansion joint should be applied. Sliding slab track system is known to reduce the effect of track-bridge interaction by the application of a sliding layer between slab track and bridge structure. This study presents track-bridge interaction analysis results of the sliding slab track and compares them with conventional fixed slab track on bridges. The result shows that the sliding slab track can significantly reduce the additional axil forces of the continuously welded rail, and the difference is more significant for long and continuous span bridge. |