SCADDS/Bridge Superstructure Analyst™
Release 2.1

Custom Features		Analysis Methodology
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SCADDS/Bridge Superstructure Analyst™, performs Load Estimation and Analysis of T-Beam Superstructures of Reinforced Concrete Multilane Bridges as per IS, IRC and Ministry of Transport (Roads Wing) specifications.

Presently, this is on MS-DOS® platform and controlled through a Windows® 95/98 User Interface.

You can download a fully functional Trial Version of Bridge SuperCAD from the Downloads section.

Custom Features of SCADDS/Bridge Superstructure Analyst

• Analysis Methodology based on Indian Standard (IS) Codes, Indian Roads Congress (IRC) Codes and Highways Manuals.
• One to Four Traffic Lanes.
• Intelligent Load Estimation Engine comprising of all types of IRC Loading Classes, viz.,

Class AA Tracked Vehicle
Class AA Wheeled Vehicle
Class 70R Tracked Vehicle
Class 70R Wheeled Vehicle
Class 70R Bogie Axle
Class A Train

• Multi-choice selection of various Loading Cases and their relative positions for Bending Moment and Shear Forces.
• Main Beams with T-Section or I-Section with haunches at Top or bottom.
• Cross Beams with T-Section with haunches at Top.
• Cantilever Slab Panel with Uniform or Varying Thickness.
• 3 to 20 Main Beams in Longitudinal Direction.
• 3 to 5 Cross Beams in Transverse Direction.
• Uniform or Varying Thickness for Wearing Coat.
• A host of Utilities for computing the following:
  
  
  • Generating Pigeaud's Coefficients
  • Generating Morris & Little Coeffieients for Main Beams.
  • Generating Morris & Little Coefficients for Cross Beams.
  • Determination of Impact Factors for various Loading Classes.
    
    
  • Computation of various Sectional Properties of a given Tee Section. These include:

  Gross Sectional Area
  Gross Moment of Inertia
  Torsional Moment of Inertia
  Distributed Longitudinal Stiffness
  Distributed Torsional Stiffness
  Bending Stiffness Parameter
  Torsional Stiffness Parameter

  • Number of Rods for given Size and Area.
  • Total Area of Steel for any Number & Size of various Groups of Rods, upto ten groups.
• Facility to View or Print various parts of Output such as Deck Slab Analysis, Main Beam Analysis and Cross Beam Analysis.
• Analysis Data Export to the design and drafting module, Bridge Superstructure Designer.
• An Input Status Window to instantaneously display the Status of various parts of Input.
• An Output Status Window to instantaneously display the Status of various phases of the Run. (Top)

Analysis Methodology

The following Structural Elements have been considered during the phases of Load Estimation and Analysis for evaluating the Design Moments and Shear Forces:

• Deck Slab Interior Panel & Cantilever Panel
• Main Tee Beams - Outer Beams & Inner Beams
• Cross Tee Beams - Outer Beams, Inner Beams & Cantilever Beams

Pigeaud's Curves have been computerized and used for analyzing Deck Slab Panels. In all, twenty-two load positions from various Loading Classes have been incorporated in Bridge Superstructure Analyst for obtaining the Bending Moments in longer as well as shorter directions.

For evaluating Shear Forces and Shear Stresses in slab panels, seven load positions from various loading classes are considered along longer and shorter spans. However, these load cases are considered for interior panels only. The cantilever portion is analyzed for Class A Loading.

Main Tee Beams and Cross Tee Beams are analyzed with the aid of Morris & Little Coefficients, derived from the theory of Orthotropic Plates. The design curves to supplement the above theory have been totally computerized so as to generalize the potential use of Bridge Superstructure Analyst.

All other particulars and specifications conform to relevant I.R.C. Codes of Practices, I.S. Codes and the Manual of Highways Department, Madras.

The S.I. (Systems International) Units of Measure are used throughout for all internal computations and output.(Top)

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