Shake Table Studies of a Steel Girder Bridge System with ABC Connections

This paper presents pretest analysis of a shake table test model of a 0.35-scale, two-span, steel plate girder bridge. The objective of pretest analysis was to obtain an insight on the seismic response of the bridge model during the shake table tests. The bridge included seat type abutments, full-depth precast deck panels, and a two-column bent in which columns were pinned to the footing and integral with superstructure. Six ABC connections were incorporated in the bridge model. An analytical model was developed in OpenSees and was subjected to ten input bi-directional earthquake motions including near-fault and far-field records. The overall seismic response of the bridge was satisfactory for all the earthquake records at 100%, 150%, and 200% design level. All connections and capacity-protected components remained elastic, and the average ductility capacity surpassed the ductility demand even at 200% design level. Using experimental fragility curves developed for RC bridge columns, it was predicted that there was a probability of 45% that columns would undergo the imminent failure in the last run and a probability of 30% for their failure. 4.

[1]  M. Saiid Saiidi,et al.  Experimental Study of Two-Way Reinforced Concrete Column Hinges under Seismic Loads , 2009 .

[2]  Mehrdad Mehraein.  Seismic Performance of Bridge Column-Pile-Shaft Pin Connections for Application in Accelerated Bridge Construction , 2016 .

[3]  Benjamin A. Graybeal.  Behavior of Field-Cast Ultra-High Performance Concrete Bridge Deck Connections Under Cyclic and Static Structural Loading , 2010 .

[4]  Michael E. Kreger,et al.  Development of a Precast Bent Cap System , 2001 .

[5]  Ramin Taghinezhadbilondy.  Extending Use of Simple for Dead Load and Continuous for Live Load (SDCL) Steel Bridge System to Seismic Areas , 2016 .

[6]  M. Saiid Saiidi,et al.  Shake Table Studies and Analysis of a PT-UHPC Bridge Column with Pocket Connection , 2018 .

[7]  Amr S. Elnashai,et al.  Analytical Assessment of the Effect of Vertical Earthquake Motion on RC Bridge Piers , 2011 .

[8]  Ben Graybeal,et al.  Design and construction of field-cast UHPC connections. , 2014 .

[9]  T. Paulay,et al.  Seismic Design of Reinforced Concrete and Masonry Buildings , 1992 .

[10]  K. Mosalam,et al.  Seismic evaluation of the shear behavior in reinforced concrete bridge columns including effect of vertical accelerations , 2014 .

[11]  Mostafa Tazarv,et al.  Next Generation of Bridge Columns for Accelerated Bridge Construction in High Seismic Zones , 2014 .

[13]  Matthew J Tobolski,et al.  Development of a Precast Bent Cap System for Seismic Regions , 2011 .

[14]  M. Saiid Saiidi,et al.  Design, Construction, and Shake Table Testing of a Steel Girder Bridge System with ABC Connections , 2019, Journal of Bridge Engineering.

[15]  John F. Stanton,et al.  A Precast Bridge Bent System for Seismic Regions , 2010 .

[16]  Leonardo Dueñas-Osorio,et al.  Seismic response of a bridge–soil–foundation system under the combined effect of vertical and horizontal ground motions , 2013 .