TY - GEN
T1 - Ultimate strengths of partial composite beams considering long-term effects of concrete slabs
AU - Bae, D.
AU - Youn, S. G.
AU - Ryu, H. K.
AU - Park, Y. S.
PY - 2006
Y1 - 2006
N2 - In this paper, experimental and analytical studies on ultimate strengths of simply supported partial composite beams with compact-section steel girders were conducted. Long-term effects were also considered. Four 6.5 m long steel-concrete composite girder specimens were fabricated. To investigate the effects of creep and shrinkage of concrete slabs on composite beams, long-term behaviors such as the changes of deflections, curvatures, and strains were measured for one year. After 400 days, three specimens, which have different degrees of shear connection, were tested to get the ultimate strengths in positive moment region and another one for negative moment failure. Long-term test results were compared with the analytical results obtained by using the age-adjusted effective modulus method (AEMM). Elastic-plastic finite element analysis considering relative slip between slab and girder was also performed to estimate the theoretical ultimate strengths of the specimens. From the analytical and test results, the effects of long-term behavior of concrete, partial shear connection or interaction and material nonlinearity on the ultimate loads of composite beams were evaluated and discussed.
AB - In this paper, experimental and analytical studies on ultimate strengths of simply supported partial composite beams with compact-section steel girders were conducted. Long-term effects were also considered. Four 6.5 m long steel-concrete composite girder specimens were fabricated. To investigate the effects of creep and shrinkage of concrete slabs on composite beams, long-term behaviors such as the changes of deflections, curvatures, and strains were measured for one year. After 400 days, three specimens, which have different degrees of shear connection, were tested to get the ultimate strengths in positive moment region and another one for negative moment failure. Long-term test results were compared with the analytical results obtained by using the age-adjusted effective modulus method (AEMM). Elastic-plastic finite element analysis considering relative slip between slab and girder was also performed to estimate the theoretical ultimate strengths of the specimens. From the analytical and test results, the effects of long-term behavior of concrete, partial shear connection or interaction and material nonlinearity on the ultimate loads of composite beams were evaluated and discussed.
UR - http://www.scopus.com/inward/record.url?scp=56749170892&partnerID=8YFLogxK
U2 - 10.1201/b18175-349
DO - 10.1201/b18175-349
M3 - Conference contribution
AN - SCOPUS:56749170892
SN - 0415403154
SN - 9780415403153
T3 - Proceedings of the 3rd International Conference on Bridge Maintenance, Safety and Management - Bridge Maintenance, Safety, Management, Life-Cycle Performance and Cost
SP - 823
EP - 825
BT - Proceedings of the 3rd International Conference on Bridge Maintenance, Safety and Management - Bridge Maintenance, Safety, Management, Life-Cycle Performane and Cost
PB - Taylor and Francis/ Balkema
T2 - 3rd International Conference on Bridge Maintenance, Safety and Management - Bridge Maintenance, Safety, Management, Life-Cycle Performance and Cost
Y2 - 16 July 2006 through 19 July 2006
ER -