콘크리트 포장의 다웰바 전단거동 실험Stiffness Test of Dowel Bar for Jointed Concrete Pavement
- Other Titles
- Stiffness Test of Dowel Bar for Jointed Concrete Pavement
- Authors
- 양성철; 최재곤
- Issue Date
- 2008
- Publisher
- 한국도로학회
- Keywords
- dowel; shear test; dowel support reaction factor; shear spring stiffness constant; relative displacement; 다웰; 전단시험; 지지력계수; 전단 스프링 강성계수; 상대 처짐
- Citation
- 한국도로학회논문집, v.10, no.2, pp.83 - 91
- Journal Title
- 한국도로학회논문집
- Volume
- 10
- Number
- 2
- Start Page
- 83
- End Page
- 91
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/23127
- ISSN
- 1738-7159
- Abstract
- Shear test procedure for concrete-dowel interaction was proposed along with determination of dowel support reaction factor
or shear spring stiffness constant using the spreadsheet example. For this task, three AASHTO-type standard specimens were
prepared to simulate behavior of the jointed concrete pavement. A side support system was adopted to minimize twisting of
the test specimen which had been observed in a preliminary test. A typical elastic behavior of the dowel-concrete interaction
was observed from several test loops of loading, unloading and reloading procedures. However load versus slab displacement
represents to be nonlinear. Test results show that the dowel support reaction factor ranges from 550-880 GN/m3, which is 1.4-2.2
times greater than 407 GN/m3 proposed by Yoder and Witczak. This is because less torsional distraction was occurred with
the help of a side support system adopted in this experiment. The dowel support reaction factor or shear spring stiffness constant
obtained from the procedures proposed in this paper may be used as a reference data for the structural analysis of jointed concrete
pavement.
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