Use of “Controlled rocking” in the Seismic Design of Bridges

The development of alternative solutions for precast concrete buildings based on jointed ductile connections has introduced an innovative concept in the seismic design of frame and shear wall systems. In this contribution, the feasibility and efficiency of the application to bridge piers and systems of hybrid solutions, where self-centering and energy dissipating properties are adequately combined to achieve the target maximum displacement with negligible residual deformations, are investigated. Comparison of the seismic response of hybrid (or controlled rocking) solutions and traditional monolithic systems is carried out through push-pull and non-linear time-history analyses on both single and multi-degree of freedom bridge systems. Critical discussion on the enhanced performance of hybrid solutions is provided.

[1]  Mervyn J. Kowalsky,et al.  A displacement‐based approach for the seismic design of continuous concrete bridges , 2002 .

[2]  STEFANO PAMPANIN,et al.  ANALYTICAL MODELLING OF THE SEISMIC BEHAVIOUR OF PRECAST CONCRETE FRAMES DESIGNED WITH DUCTILE CONNECTIONS , 2001 .

[3]  Andre Filiatrault,et al.  Posttensioned Energy Dissipating Connections for Moment-Resisting Steel Frames , 2002 .

[4]  Gian Michele Calvi,et al.  Displacement-based seismic design of multi-degree-of-freedom bridge structures , 1995 .

[5]  STEFANO PAMPANIN,et al.  PERFORMANCE-BASED SEISMIC RESPONSE OF FRAME STRUCTURES INCLUDING RESIDUAL DEFORMATIONS. PART II: MULTI-DEGREE OF FREEDOM SYSTEMS , 2003 .

[6]  M. J. N. Priestley,et al.  The PRESSS program : Current status and proposed plans for phase III , 1996 .

[7]  John B. Mander,et al.  Seismic Performance of Precast Reinforced and Prestressed Concrete Walls , 2003 .

[8]  W. Ramberg,et al.  Description of Stress-Strain Curves by Three Parameters , 1943 .

[9]  John F. Stanton,et al.  A HYBRID REINFORCED PRECAST FRAME FOR SEISMIC REGIONS , 1997 .

[10]  Chin Tung Cheng,et al.  SEISMIC RESISTANCE OF BRIDGE PIERS BASED ON DAMAGE AVOIDANCE DESIGN , 1997 .

[11]  Richard Sause,et al.  Seismic Response Evaluation of UnbondedPost-Tensioned Precast Walls , 2002 .

[12]  STEFANO PAMPANIN,et al.  PERFORMANCE-BASED SEISMIC RESPONSE OF FRAME STRUCTURES INCLUDING RESIDUAL DEFORMATIONS. PART I: SINGLE-DEGREE OF FREEDOM SYSTEMS , 2003 .

[13]  G. Housner.  The behavior of inverted pendulum structures during earthquakes , 1963 .

[14]  G. MacRae,et al.  POST‐EARTHQUAKE RESIDUAL DISPLACEMENTS OF BILINEAR OSCILLATORS , 1997 .

[15]  Z. A. Lubkowski,et al.  EN1998 Eurocode 8: Design of structures for earthquake resistance , 2001 .

[16]  Sri Sritharan,et al.  Preliminary results and conclusions from the PRESSS five-story precast concrete test Building , 1999 .

[17]  Stefano Pampanin,et al.  TOWARDS PERFORMANCE-BASED SEISMIC DESIGN OF MDOF STRUCTURES WITH EXPLICIT CONSIDERATION OF RESIDUAL DEFORMATIONS , 2004 .

[18]  T. Takeda,et al.  Reinforced Concrete response to simulated earthquakes , 1970 .