The Latest Engineering Trends and Issues
Bridge Analysis MIDAS CIVIL Eigenvalue Analysis Dynamic Analysis Seismic Analysis Blast Analysis Impact Analysis
MIDAS CIVIL Bridge Modeling Building Information Modeling Bridge Information Modeling Parametric Modeling BrIM MIDAS CIM BIM modeling Interoperability bim guidelines
MIDAS CIVIL Dynamic Analysis Response Spectrum Pushover Analysis SDOF system Spectral Acceleration Pushover Hinge FEMA 356 ATC 40 Capacity / Demand curve
MIDAS CIVIL Construction Stage Bridge Insight Nonlinear Analysis linear analysis cantilever beam Rebar confinement effect Reinforcement
MIDAS CIVIL Bridge Insight Structural Analysis Vehicle Loads Influence Line Analysis Moving Loads Influence Line Diagram Muller Breslau's Principle Static Equilibrium Method Influence Line
MIDAS CIVIL Bridge Design Bridge Insight P-Delta Analysis Second Order Effects First Order Effects Lateral Forces P-Delta Effects
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MIDAS CIVIL Bridge Design Tendon Tendon Primary Tendon Secondary Prestressed Loads Hyperstatic Actions
MIDAS CIVIL Bridge Design Buckling Composite Girder Nonlinear Buckling Material Nonlinear Steel Girder Geometric Nonlinear Imperfection
The right way to set it up
MIDAS CIVIL Bridge Design Soil Structure Interaction Bridge Insight Boundary Conditions Structural Design Structural Assesment Point Spring Support Surface Spring Support Pile Spring Support
MIDAS CIVIL Integral Bridges Soil Structure Interaction Tips & Tutorials Substructures Bridge Engineering Spring Support
MIDAS CIVIL Bridge Design Bridge Insight Moving Load Optimization Traffic Loads Traffic Lane Moving Load Case
API (Application Programming Interface) is a type of software that provides a connection between computers or between computer programs. Furthermore, API helps interface within the software. There are often misunderstandings of why an engineer wants to implement API. First of all, rather than focusing on the value of the API, it is better to think about the value of the effect it brings. APIs make sense when they provide a channel through which businesses can access the current value in new ways.
MIDAS CIVIL Bridge Insight Substructures Bridge Bearings Bridge Components Curved Bridges Radial Bearing Layout Tangential Bearing Layout Hybrid Bearing Layout Superstructures Bearing Arrangement
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MIDAS CIVIL Dynamic Analysis Bridge Insight Cable Stayed Bridges Response Spectrum Fan Cable Stayed Bridge Unknown Load Factor Cable Stiffness Semi-Fan Cable Stayed Bridge Harp Cable Stayed Bridge Arrangement of Cable System
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While modeling cable-stayed bridges, the different types of cable arrangements such as Fan, Semi-Fan, and Harp type is often considered. Since they vary in cable arrangement, the pretension in the cables is different and the deflection, bending moment, and stresses vary in the bridge. It then becomes prudent to choose the best arrangement for a more optimized design leading to lesser cost and increased safety.
In this article, we present, in a concise way, the modeling of a Cable-Stayed Bridge in midas civil with three different cable arrangements. Furthermore, Response Spectrum analysis is carried out on the models to study the Dynamic Responses of the three arrangements.
MIDAS CIVIL Bridge Insight Construction Stage Analysis Camber Camber Control Initial Tangent Displacement
As structural engineers, whenever we need to analyze a complex structure, we turn to FEM (Finite Element Method) analysis for a quick solution with acceptable accuracy. The generalized beam element model is quite sufficient in most cases; however, there are a few instances in which we may need to go for detailed 3D finite element analysis. Few such cases are joint analysis, buckling analysis, material non-linear analysis, and so on. But hey, meshing even matters in simple linear analysis! Let’s have a look at the basic guidelines for meshing and the process of mesh convergence.
MIDAS CIVIL Bridge Design Prestressed Concrete Bridge Insight Structural Design Bridge Construction Prestressed Concrete Bridges Elongation of Tendons Elongation Tolerance Postensioned Concrete Structural Assesment Elongation of Cables Estimated Elongation
When we build prestressed concrete structural members, which is a frequently used material for bridges worldwide, the benefit in material savings and reduction of dimensions is guaranteed only when it is built correctly. Structures behave the way they are built, and not the way they are designed, so it is imperative that the designer and reviewer engineers provide the necessary information so that the construction process is oriented towards a structure that meets all safety requirements.
In this article, we present, in a concise way, the reasons why the elongations of prestressing steels in bridges should be controlled, and in the end, we provide a comparison of a real case in contrast to what is obtained from numerical modeling. Also, you can download a spreadsheet template (Click here) for the manual calculations of the friction loss and elongations that you can use to compare with the reliable results of midas Civil.
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