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http://dx.doi.org/10.7855/IJHE.2012.14.2.045

A Study on Joint Position at Concrete Pavement with Box Culverts  

Park, Joo-Young (인하대학교 토목공학과)
Sohn, Dueck-Su (한국도로공사 도로교통연구원)
Lee, Jae-Hoon (한국도로공사 도로교통연구원)
Jeong, Jin-Hoon (인하대학교 토목공학과)
Publication Information
International Journal of Highway Engineering / v.14, no.2, 2012 , pp. 45-53 More about this Journal
Abstract
Hollows are easily made and bearing capacity is lowered near underground structures of concrete pavement because of poor compaction and long term settlement of the ground. Distresses occur and lifespan is shortened because of larger stress induced by external loadings expected than that in the design. In this paper, the distresses of the concrete pavement slab over box culverts were investigated at the Korea Expressway Corporation(KEC) test road. The transverse cracking of the slabs over the culverts was compared between up and down lines with different soil cover depth. The box culvert without soil cover and concrete pavement were modeled and analyzed by the finite element method(FEM) to verify the transverse cracking at the test road. Wheel loading was applied after self weight of the pavement and temperature gradient of the concrete slab at Yeojoo, Gyeonggi where the test road is located were considered. Positions of maximum tensile stress and corresponding positions of the wheel loading were found for each loading combination. Joint position minimizing the maximum tensile stress was found and optimal slab length over the culverts with diverse size were suggested.
Keywords
concrete pavement; box culvert; joint; transverse cracking; finite element analysis;
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