Browse > Article
http://dx.doi.org/10.4334/JKCI.2014.26.5.573

Static Behavior of Stud Shear Connector for UHPC Deck  

Lee, Kyoung-Chan (High-speed Railroad System Research Center, Korea Railroad Research Institute)
Kwark, Jong-Won (Structural Engineering Research Division, Korea Institute of Civil Engineering and Building Technology)
Park, Sang-Hyeok (High-tech Construction Materials Center, Korea Conformity Laboratories)
Kim, Jee-Sang (Department of Civil & Architectural Engineering, Seokyeong University)
Publication Information
Journal of the Korea Concrete Institute / v.26, no.5, 2014 , pp. 573-579 More about this Journal
Abstract
Typical composite girder has been composed with conventional concrete deck and steel girder. Recently, ultrahigh-performance-concrete (UHPC) deck is proposed in order to enhance durability and reduce weight of deck as well as to increase stiffness and strength of the composite girder. This study investigates that a headed stud is still compatible as a shear connector for the UHPC deck and steel girder composite beam. Twelve push-out specimens are prepared to evaluate the static strength of stud shear connectors embedded in the UHPC deck. The test program proves that the static strength of the stud shear connectors embedded in UHPC well meets with design codes described in AASHTO LRFD. Chosen experimental variables are aspect ratio of height to diameter of stud, thickness of deck and thickness of concrete cover over the head of stud. From the test program, aspect ratio and cover thickness are investigated to mitigate the regulations of the existing design codes. The minimum aspect ratio and the minimum cover thickness given in AASHTO LRFD are four and 50mm, respectively. This limitation hinders to lower the thickness of the UHPC deck. The results of the experiment program give that the aspect ratio and the cover thickness can be lower down to three and 25mm, respectively. Eurocode-4 regulates characteristic relative slip at least 6mm. However, test results show that stud shear connectors embedded in UHPC provide the characteristic relative slip only about 4mm. Therefore, another measures to increase ductility of stud should be prepared.
Keywords
headed stud; shear connector; UHPC (ultra-high-performance-concrete); composite beam; bridge deck;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Park, J. S., Kim, Y. J., Cho, J. R., and Jeon, S. J., "Characteristics of Strength Development of Ultra-High Performance Concrete according to Curing Condition", Journal of the Korea Concrete Institute, Vol. 25, Issue 3, 2013, pp. 295-304 (in Korean).   과학기술학회마을   DOI   ScienceOn
2 Korea Institute of Construction Technology(KICT), Development of Design and Construction System Technology for Hybrid Cable Stayed Bridge, KICT 2011-076, KICT, Korea, 2011 (in Korean).
3 Korea Concrete Institute, Design Recommendations for Ultra-High Performance Concrete K-UHPC, KCI-M-12-003, Korea, 2012 (in Korean).
4 Yang, I. H., Joh, C., Lee, J. W., and Kim, B. S., "Torsional behavior of ultra-high performance concrete squared beams," Engineering Structures, 56, 2013, pp. 372-383.   DOI   ScienceOn
5 Yang, I. H., Joh, C., and Kim, B. S., "Flexural strength of large-scale ultra high performance concrete prestressed T-beams," Canadian Journal of Civil Engineering, 38, 2011, pp. 1185-1195.   DOI   ScienceOn
6 Graybeal, B. A. "Flexural Behavior of an Ultrahigh-Performance Concrete I-Girder", Journal of Bridge Engineering ASCE, Vol. 13, Issue 6, 2008, pp. 602-610.   DOI   ScienceOn
7 Graybeal, B. A. "Fatigue Response in Bridge Deck Connection Composed of Field-Cast Ultra-High- Performance Concrete", Transportation Research Record 2251, 2011. pp. 93-100.
8 John, H. and George, S., The Implementation of Full Depth UHPC Waffle Bridge Deck Panels, Federal Highway Administration Highways for LIFE Technology Partnerships Program, 2010.
9 Harris, D. K. and Roberts-Wollmann, C. L., Characterization of the Punching Shear Capacity of Thin Ultra-High Performance Concrete Slabs, Final Report, Virginia Transportation Research Council, Charlottesville, VA, 2005.
10 Ollgaard, J. G., Slutter, R. G., and Fisher, J. W., "Shear strength of stud connectors in lightweight and normal-weight concrete," AISC Engineering Journal, Vol. 8, Issue 2, 1971, pp. 55-64.
11 Naaman, A. E. and Chandrangsu, K., "Innovative Bridge Deck System Using High-Performance Fiber-Reinforced Cement Composites," ACI Structural Journal, Vol. 101, No. 1, Jan.-Feb., 2004, pp. 57-64.
12 Naaman, A. E., Likhitruangsilp, V., and Parra-Montesinos, G., "Punching Shear Response of High-Performance Fiber-Reinforced Cementitious Composite Slabs," ACI Structural Journal, Vol. 104, No. 2, Mar.-Apr. 2007, pp. 170-179.
13 CEN, 1994-4-4 Eurocode 4: Design of composite steel and concrete structures, Part 1-1: General rules and rules for buildings. 2004.
14 Toutlemonde, F., "Fatigue Performance of UHPFRC Ribbed Slab Applied as a Road Bridge Deck Verified According to the Eurocodes," Proceedings of the 5th International Conference on Concrete under Severe Conditions, Tours, France, 2007, pp. 1191-1200.
15 AASHTO, AASHTO LRFD Bridge Design Specifications, 4th edition. Washington, D.C. 2007.
16 CEN. 1994-2 Eurocode 4: Design of Composite Steel and Concrete Structures, Part 2: General rules and rules for bridges. 2005.
17 Xu, C. and Sugiura, K., "FEM analysis of failure development of group studs shear connector under effects of concrete strength and stud dimension," Engineering Failure Analysis, in press, 10.1016/j.engfailanal.2013.02.023, available online 26 Feb. 2013.   DOI   ScienceOn
18 Hegger, J., Feldmann, M., Rauscher, S., and Hechler, O., "Load-Deformation Behavior of Shear Connectors in High Strength Concrete subjected to Static and Fatigue Loading." IABSE Symposium Report Budapest 2006: Responding to Tomorrow's Challenge in Structural Engineering, IABSE, 2006, pp. 17-24.