Analytical Study on a Longitudinal Joints of the Slab-Type Modular Bridges

Authors: Sang-Yoon Lee, Jung-Mi Lee, Hyeong-Yeol Kim, Jae-Joon Song

Abstract:

In this study, a longitudinal joint connection was proposed for the short-span slab-type modular bridges with rapid construction. The slab-type modular bridge consists of a number of precast slab modules and has the joint connection between the modules in the longitudinal direction of the bridge. A finite element based parameter analysis was conducted to design the shape and the dimensions of the longitudinal joint connection. Numbers of shear keys within the joint, height and depth of the shear key, tooth angle, and the spacing were considered as the design parameters. Using the local cracking load at the corner of the shear key and the cross-sectional area of the joint, an efficiency factor was proposed to evaluate the effectiveness of the longitudinal joint connection. The dimensions of shear key were determined by comparing the cracking loads and the efficiency factors obtained from the finite element analysis.

Keywords: precast, slab bridge, modular bridge, shear key

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1329016

References:

[1] KICT, "Research & business development of modular bridge,"Land Transport and Maritime R&D Report (10CTPB01), The Construction Technology Innovation Program, MLTM, July 2011, Korea.
[2] Tassios and Tsoukantas, "Serviceability and ultimate limit states of large panel connections under static and dynamic loading," RILEM-CEB-CIB Symposium on mechanical and insulating properties of joins of precast reinforced concrete elements, Proceedings, Nat. Techn. Univ. of Athens, 1978.
[3] FIB, "Guide to good practice - Structural connections for precast concrete buildings,"International Federation for Structural Concrete, Bulletin 43, Feb. 2008, pp. 246-250
[4] C. H. Chung, Y. J. Kim, S. W. Kim, and C. L. Park, "Static Tests on Transverse Joints of Precast Prestressed concrete Bridge Deck" Magazine of the Korea Concrete Institute, Vol. 10, No. 2, April 1998, pp.109-117.
[5] ABAQUS Version 6.6 Documentation: Hibbitt, Karlsson and Sorensen, Inc. 2006.
[6] CEN, "EN 1992-1-1, Eurocode 2: Design of concrete structures-Part 1-1: General rules and rules for buildings," European Committee for Standardization, 2004.