Effects of the earthquake-induced pounding upon pier motions in the multi-span simply supported steel girder bridge

Abstract The earthquake-induced pounding effects on bridge piers are investigated by analyzing dynamic responses of a three-span simply supported steel girder bridge. Using a simplified and idealized analytical model reflecting random characteristics of seismic excitations, maximum pier responses are evaluated. The nonlinear behaviors of reinforced concrete piers and pounding between adjacent bridge decks are included in the analytical model by utilizing a nonlinear hysteresis model and an impact element (a linear viscoelastic model), respectively. From the results of time history analysis, it is found that pounding between adjacent vibration units reduces the pier forces and displacements by restricting the pier motions. As the peak ground acceleration increases, the results of the case without consideration of pounding shows the impractically large pier displacements in the hysteresis model by ignoring restriction of pier motions due to pounding. The results according to the gap distance between impact elements show that the size of gap distance is heavily correlated to the nonlinear pier behaviors. Therefore, the effects of pounding and nonlinear pier behaviors should be considered together to reflect the bridge responses correctly.

[1]  Patrick Paultre,et al.  Fragility curves of typical as-built highway bridges in eastern Canada , 2012 .

[2]  Krzysztof Wilde,et al.  Pounding of superstructure segments in isolated elevated bridge during earthquakes , 1998 .

[3]  Nawawi Chouw,et al.  Study of SSI and non-uniform ground motion effect on pounding between bridge girders , 2005 .

[4]  Hong Hao,et al.  Numerical simulation of pounding damage to bridge structures under spatially varying ground motions , 2013 .

[5]  Jian Zhang,et al.  Effects of Pounding and Skewness on Seismic Responses of Typical Multispan Highway Bridges Using the Fragility Function Method , 2013 .

[6]  Reginald DesRoches,et al.  Seismic fragility of typical bridges in moderate seismic zones , 2004 .

[7]  Gregory A. MacRae,et al.  P-Δ Effects on Single-Degree-of-Freedom Structures in Earthquakes , 1994 .

[8]  Robert Jankowski,et al.  Earthquake-induced pounding between equal height buildings with substantially different dynamic properties , 2008 .

[9]  John F. Stanton,et al.  Design of Seismic Restrainers for In-Span Hinges , 1997 .

[10]  Masanobu Shinozuka,et al.  Energy dissipating restrainers for highway bridges , 2000 .

[11]  John M. Niedzwecki,et al.  Earthquake induced pounding in friction varying base isolated buildings , 2007 .

[12]  Ming-Hsiang Shih,et al.  Performance study of a bridge involving sliding decks and pounded abutment during a violent earthquake , 2007 .

[13]  Jay Shen,et al.  ESTIMATION OF RELATIVE DISPLACEMENT OF TWO ADJACENT ASYMMETRIC STRUCTURES , 2001 .

[14]  K. Kasai,et al.  Building pounding damage during the 1989 Loma Prieta earthquake , 1997 .

[15]  Praveen K. Malhotra,et al.  Dynamics of Seismic Pounding at Expansion Joints of Concrete Bridges , 1998 .

[16]  Reginald DesRoches,et al.  EFFECT OF POUNDING AND RESTRAINERS ON SEISMIC RESPONSE OF MULTIPLE-FRAME BRIDGES , 2002 .

[17]  Mehdi Saiidi,et al.  Experimental Evaluation of Longitudinal Seismic Performance of Bridge Restrainers at In-Span Hinges , 2004 .

[18]  Shehata E. Abdel Raheem.  Pounding mitigation and unseating prevention at expansion joints of isolated multi-span bridges , 2009 .

[19]  Silvia Dimova,et al.  Simplified seismic fragility analysis of structures with two types of friction devices , 2000 .

[20]  Kwang-Il Cho,et al.  Effects of the restrainer upon bridge motions under seismic excitations , 2008 .

[21]  Masanobu Shinozuka,et al.  Effects of seismically induced pounding at expansion joints of concrete bridges , 2003 .

[22]  E. Rosenblueth.  The 1985 earthquake : Causes and effects in Mexico City , 1986 .

[23]  Reginald DesRoches,et al.  Influence of modeling assumptions on the seismic response of multi-span simply supported steel girder bridges in moderate seismic zones , 2006 .

[24]  Hong Hao,et al.  Effectiveness of using rubber bumper and restrainer on mitigating pounding and unseating damage of bridge structures subjected to spatially varying ground motions , 2014 .

[25]  Jack P. Moehle,et al.  Highway Bridges and Traffic Management , 1995 .

[26]  Raj V. Siddharthan,et al.  Stiffnesses of abutments on spread footings with cohesionless backfill , 1997 .

[27]  Bo Li,et al.  Experimental investigation of inelastic bridge response under spatially varying excitations with pounding , 2014 .

[28]  Sang-Hyo Kim,et al.  Effects of bearing damage upon seismic behaviors of a multi-span girder bridge , 2006 .

[29]  S. Anagnostopoulos.  Pounding of buildings in series during earthquakes , 1988 .

[30]  Mjn Priestley,et al.  Seismic Design and Retrofit of Bridges , 1996 .

[31]  Nawawi Chouw,et al.  Effect of abutment excitation on bridge pounding , 2013 .

[32]  Demeter G. Fertis,et al.  Mechanical And Structural Vibrations , 1995 .

[33]  Ching-Jong Wang.  Failure study of a bridge subjected to pounding and sliding under severe ground motions , 2007 .

[34]  Michel Bruneau,et al.  Performance of steel bridges during the 1995 Hyogoken–Nanbu (Kobe, Japan) earthquake—a North American perspective , 1998 .

[35]  Takashi Obata,et al.  Seismic performance of isolated curved steel viaducts equipped with deck unseating prevention cable restrainers , 2007 .