Now showing items 3041-3060 of 3153

    • Survey and Evaluation of Damaged Concrete Bridges 

      Michael P. Enright; Dan M. Frangopol (American Society of Civil Engineers, 2000)
      It is well known that the U.S. bridge inventory stands in need of repair. For a rational allocation of U.S. investment resources to bridge maintenance, life cycle cost and probabilistic methods must be used. This requires ...
    • Cable Safety Factors for Four Suspension Bridges 

      Robert J. Perry; Louis G. Silano; Robert Q. Haight; David P. Billington; Dyab Khazem (American Society of Civil Engineers, 1999)
    • Innovative Method for Evaluating Overweight Vehicle Permits 

      Karen C. Chou; James H. Deatherage; Terry D. Leatherwood; Amjad J. Khayat (American Society of Civil Engineers, 1999)
      Any vehicle whose gross weight exceeds 356 kN (80,000 lb) and/or does not conform to the restriction imposed by the Tennessee Department of Transportation (TDOT) requires a permit issued by TDOT in order to use the Tennessee ...
    • Performance of Bridge Timber Ties Under Static and Fatigue Loading 

      Khaled A. Soudki; Sami H. Rizkalla; A. Shakoor Uppal (American Society of Civil Engineers, 1999)
      This study is in response to the dramatic increase in railway car axle loads that has occurred over the last 50 years. The paper presents the results of an experimental program undertaken to evaluate the structural performance ...
    • Finite Displacement Behavior of Curved I-Girder Webs Subjected to Bending 

      James S. Davidson; Scott R. Ballance; Chai H. Yoo (American Society of Civil Engineers, 1999)
      Curvature greatly complicates the behavior of curved plate girders used in bridges. The out-of-plane “bulging” displacement of the curved web results in an increase in stress, which must be considered in the design of plate ...
    • Closure to “Bolted Splices: A Look at Design Criteria” by Muthiah Kasi and Harold R. Sandberg 

      Muthiah Kasi; Harold R. Sandberg (American Society of Civil Engineers, 1999)
    • Number of Cable Effects on Buckling Analysis of Cable-Stayed Bridges 

      Yang-Cheng Wang (American Society of Civil Engineers, 1999)
      Cables instead of interval piers support cable-stayed bridges, and the bridge deck is subjected to strong axial forces due to the horizontal components of cable reactions. The structural behavior of a bridge deck becomes ...
    • Short-Term Strain Monitoring of Bridge Structures 

      Richard R. Sartor; Michael P. Culmo; John T. DeWolf (American Society of Civil Engineers, 1999)
      This report demonstrates how short-term field monitoring can be used to evaluate bridges when problems occur. A portable strain monitoring system with software has been used to study four different bridges. Studies to ...
    • Load Distribution of Existing Solid Slab Bridges Based on Field Tests 

      A. Amer; M. Arockiasamy; M. Shahawy (American Society of Civil Engineers, 1999)
      The load-carrying capacity of existing slab bridges is commonly calculated based on the equivalent width recommended by the American Association of State Highway and Transportation Officials (AASHTO). Interest in the field ...
    • Determination of Slab Participation from Weigh-In-Motion Bridge Testing 

      Maged Elhelbawey; Chung C. Fu; M. A. Sahin; David R. Schelling (American Society of Civil Engineers, 1999)
      The objective of this paper is to determine the locations of the neutral axis and the effective flange widths for steel girder bridges that may be used in bridge design or, at least, in the bridge rating process. A study ...
    • Flutter and Buffeting Analysis. II: Luling and Deer Isle Bridges 

      Chun S. Cai; Pedro Albrecht; Harold R. Bosch (American Society of Civil Engineers, 1999)
      The practical applications of the finite-element software developed in Part I of this paper are demonstrated by analyzing the aerodynamic response of two prototype bridges, the Luling Bridge with a streamlined section, and ...
    • Bolted Splices: A Look at Design Criteria 

      Michael J. Abrahams; Debra Moolin; Muthiah Kasi; Harold R. Sandberg (American Society of Civil Engineers, 1999)
    • Analytical Model of Curved I-Girder Web Panels Subjected to Bending 

      James S. Davidson; Scott R. Ballance; Chai H. Yoo (American Society of Civil Engineers, 1999)
      Curvature greatly complicates the behavior of curved plate girders used in bridges. The out-of-plane “bulging” displacement of the curved web results in an increase in stress, which must be considered in the design of plate ...
    • Automated Data Acquisition for Bridge Inspection 

      Hazem M. Elzarka; Lansford C. Bell; Richard L. Floyd (American Society of Civil Engineers, 1999)
      Bridge management systems have a common need for a well-established inspection data acquisition system. Inspection data management requirements have expanded after establishment of new Federal Highway Administration ...
    • Simulation of Construction of Cable-Stayed Bridges 

      Praveen Reddy; Jamshid Ghaboussi; Neil M. Hawkins (American Society of Civil Engineers, 1999)
      Construction of cable-stayed bridges involves major changes in configuration of the structure with the addition and removal of structural components to the partially constructed structure. At every stage of construction, ...
    • Dynamic Load Allowance for Through-Truss Bridges 

      J. A. Laman; J. S. Pechar; T. E. Boothby (American Society of Civil Engineers, 1999)
      The objective of the present study was to experimentally evaluate the statistics of dynamically induced stress levels in steel through-truss bridges as a function of bridge component type, component peak static stress, ...
    • Flutter and Buffeting Analysis. I: Finite-Element and RPE Solution 

      Chun S. Cai; Pedro Albrecht; Harold R. Bosch (American Society of Civil Engineers, 1999)
      A finite-element formulation is developed for analyzing flutter instability and buffeting response of long-span bridges and their interaction. The flutter derivatives, instead of the indicial functions used by previous ...
    • Deck Slab Stresses in Integral Abutment Bridges 

      Shehab Mourad; Sami W. Tabsh (American Society of Civil Engineers, 1999)
      This study deals with the stress distribution in concrete deck slabs on composite steel beams used with integral abutment bridges. The applied loading is composed of one or more side-by-side HS20-44 trucks. The finite-element ...
    • Simply Supported Curved Cellular Bridges: Simplified Design Method 

      Khaled Sennah; John B. Kennedy (American Society of Civil Engineers, 1999)
      The use of curved composite bridges in interchanges of modern highway systems has become increasingly popular for economic and aesthetic considerations. Bridges with a concrete deck composite with a steel multicell section ...
    • Effect of Material Properties on Cracking in Bridge Decks 

      Tony R. Schmitt; David Darwin (American Society of Civil Engineers, 1999)
      The effect of concrete material properties on cracking in bridge decks is evaluated based on field surveys of 40 continuous steel girder bridges, representative of construction throughout the State of Kansas. Information ...