An Experimental Study on Behavior of Transverse Connection Appropriate for Modular Girder Bridge

This study is to evaluate the behavior of integral and segmental specimens through static and cyclic tests. Integral specimens were made with the same size to be compared with segmental specimens that were made by connected precast members. To evaluate its bending performance and serviceability, 1 integral and 3 segmental specimens were tested under static load. And 1 integral and 2 segmental specimens were tested under cyclic load, respectively. Different load ranges were considered in the cyclic tests to evaluate the safety and serviceability. The test results showed that under static loading, segmental specimens had about 94% of the integral specimen's maximum moment, averagely. Under cyclic loading, the segmental specimens showed that had enough safety in the range of higher than service load and enough serviceability. In conclusion, the maximum crack width (0.16mm) satisfied the allowable crack width (0.30mm) in the range of service load.

Authors:

• Dong-Hyun Kim
• Jin-Woong Choi
• Hyeong-Yeol Kim
• Sun-Kyu Park

Keywords:

• Modular bridge
• Transverse connection
• Precast concrete
• Static and cyclic test.

References:

[1] TRB. 2003, "Prefabricated bridge elements and systems to limit traffic
disruption during construction," NCHRP Synthesis 324.
[2] FHWA. 2005, "Prefabricated bridge elements and systems in Japan and
Europe," Report FHWA-PL-05-003.
[3] Heung-bae Gil, "Development of prefabricated bridge related domestic
and foreign," Expressway & Transportation Research Institute, 2012.
[4] Hyeong-teak Kang, Heung-bae Gil, il-geun Lee, "Primary Research and
Conceptual Design of Prefabricated Bridge Elements and Systems on
Highway," Expressway & Transportation Research Institute, 2007.
[5] Sang-Yoon Lee, "Major Differences between the Precast and Modular
Bridges," Korea Society of Civil Engineers, Vol.59 No.11 2011.
[6] Korea Institute of Industrial Technology Evaluation and Planning,
"Modular bridge technology development and commercialization mid
report," 2012.07.
[7] Shen Zhehao, "Fatigue Life Evaluation of Loop Joint in Precast Concrete
Deck Composite Bridge," 2005.
[8] A. Azizinamini et al, "Proposed Modifications to ACI 318-95 Tension
Development and Lap Splice for High-Strength Concrete," ACI
Structural Journal, V.96, No.5, Nov-Dec 1999.
[9] AASHTO. 2007. "AASHTO LRFD Bridge design specifications," 4th
Edition.
[10] Korea Bridge Design & Engineering Research Center, "Design Code of
Concrete Bridge," 2012.