Seismic Fragility of Multispan Simply Supported Steel Highway Bridges in New York State. I: Bridge Modeling, Parametric Analysis, and Retrofit Design

This paper studies the dynamic seismic behavior of a typical highway bridge in New York State. The topological layout and structural details of this multispan simply supported steel-girder bridge are identified as the most typical of the New York State Department of Transportation bridge inventory database. Three-dimensional finite-element models of the bridge are established considering the nonlinear behavior of critical bridge components. An in-depth parametric study is carried out to evaluate the sensitivity of the bridge’s seismic response to variations in its structural parameters. The parametric analysis determined that uncertainties associated with the steel reinforcement’s yield strength, the superstructure’s weight, the expansion joints’ gap size, the friction coefficient of expansion bearings, and the concrete compressive strength should be considered during the fragility analysis of the bridge system. The Latin hypercube sampling (LHS) approach is used to obtain representative samples for the f...

[1]  Fumio Yamazaki,et al.  Earthquake Damage Assessment of Expressway Bridges in Japan , 1999 .

[2]  H Y Kim,et al.  STATISTICAL ANALYSIS OF FRAGILITY CURVES , 2000 .

[3]  Jiahao Lin,et al.  An Introduction to Seismic Isolation , 1993 .

[4]  John B. Mander,et al.  Observed Stress‐Strain Behavior of Confined Concrete , 1988 .

[5]  Howard H. M. Hwang,et al.  Seismic Fragility Analysis of Highway Bridges , 2001 .

[6]  R. Park,et al.  Flexural Members with Confined Concrete , 1971 .

[7]  Mjn Priestley,et al.  STRENGTH AND DUCTILITY OF CONCRETE BRIDGE COLUMNS UNDER SEISMIC LOADING , 1987 .

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

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

[10]  Eunsoo Choi,et al.  Seismic analysis and retrofit of mid-America bridges , 2002 .

[11]  G. D. Wyss,et al.  A user`s guide to LHS: Sandia`s Latin Hypercube Sampling Software , 1998 .

[12]  Masanobu Shinozuka,et al.  Nonlinear Static Procedure for Fragility Curve Development , 2000 .

[13]  S Watson,et al.  SIMULATED SEISMIC LOAD TESTS ON REINFORCED CONCRETE COLUMNS. DISCUSSION AND CLOSURE , 1994 .

[14]  Ying Pan.  Seismic fragility and risk management of highway bridges in New York State , 2007 .

[15]  Michel Ghosn,et al.  Seismic Fragility of Multispan Simply Supported Steel Highway Bridges in New York State. II: Fragility Analysis, Fragility Curves, and Fragility Surfaces , 2010 .

[16]  John F. Stanton,et al.  Steel Bridge Bearing Selection and Design Guide , 1996 .

[17]  Michel Ghosn,et al.  Seismic Fragility of Continuous Steel Highway Bridges in New York State , 2007 .

[18]  M. Priestley,et al.  Ductility of Square-Confined Concrete Columns , 1982 .

[19]  R V Nutt,et al.  IMPROVED SEISMIC DESIGN CRITERIA FOR CALIFORNIA BRIDGES: PROVISIONAL RECOMMENDATIONS , 1996 .

[20]  Bilal M. Ayyub,et al.  Structural Reliability Assessment Using Latin Hypercube Sampling , 1990 .

[21]  Roy A. lmbsen.  Improved Bearing Design Concepts for Increased Seismic Resistance of Highway Bridges , 1981 .

[22]  L D Suits,et al.  NEW YORK STATE DEPARTMENT OF TRANSPORTATION'S (NYSDOT) BASIS OF ACCEPTANCE AND SPECIFICATION FOR PREFABRICATED WICK DRAINS , 1986 .