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熊志博-2015 UHPC-filled duct connections for accelerated bridge.pdf - 副本
Engineering Structures 99 (2015) 413–422
Contents lists available at ScienceDirect
Engineering Structures
j o u r n a l h o m e p a g e : w w w . e l s e v i e r . c o m / l o c a t e / e n g s t r u c t
UHPC-filled duct connections for accelerated bridge construction of RC columns in high seismic zones
Mostafa Tazarv , M. Saiid Saiidi
Department of Civil and Environmental Engineering, University of Nevada Reno, Reno, NV 89557, USA
a r t i c l e i n f o
Article history:
Received 9 December 2014 Revised 30 March 2015 Accepted 11 May 2015 Available online 27 May 2015
Keywords:
ABC
RC bridge column
UHPC
Duct
Seismic performance Cyclic test
Analysis
New bond–slip method
a b s t r a c t
Substantial attention is being paid to accelerated bridge construction (ABC) in the United States because ABC offers many advantages such as shorter onsite construction time, lower traffic impact, and higher quality structural members. Prefabricated bridge elements and systems are one of the most important ABC components. However, scarcity of seismic performance data for prefabricated element connections has limited the application of ABC in high seismic zones. In this paper, seismic performance of a new column-to-footing connection was experimentally investigated by cyclic testing of a half-scale precast reinforced concrete bridge column connected to the footing incorporating an ultra-high performance concrete (UHPC) filled duct connection. The seismic performance of the test model was comprehensively compared with a reference cast-in-place model. Furthermore, connection performance of another half-scale precast bridge column utilizing this type of connection was presented. The former model was design and tested to specifically evaluate the seismic performance of the column utilizing new column-to-footing connection and the latter column was built with eight different materials to investi-gate the seismic performance of a low-damage precast column detailing for high seismic regions.
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