Elongation Control to Prevent Issues in Prestressed Concrete Bridges

midasBridge TeamMay 18, 2022

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

Elongations of Prestressing Steels

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.

Figure.1 Bridge span and length

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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Bridge Span According to AASHTO LRFD

midasBridge TeamMay 13, 2022

midas Civil Bridge Insight AASHTO LRFD Bridge Span

Bridge Span According to AASHTO LRFD

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Bridge Rating in Midas

midasBridge TeamApril 28, 2022

midas Civil Project Tutorial Live Load Limit State Design Composite Section

Bridge Rating in Midas

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Design with Prestress Tendon Profile in midas Civil

midasBridge TeamApril 22, 2022

midas Civil PSC Bridge Project Tutorial Tendon Profile Arrangement

Design with Prestress Tendon Profile in midas Civil

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Response Spectrum Analysis in midas Civil

midasBridge TeamApril 14, 2022

midas Civil Project Tutorial Seismic Analysis Damping Verrazzano Narrows Bridge IRC 6 Response Spectrum Analysis free vibration IRC SP 114 Spectral Data

Response Spectrum Analysis in midas Civil

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Special Bridges with Double Layered Truss Girders

midasBridge TeamMarch 24, 2022

News & Trends Cable Stayed Bridges Suspension Bridges George Washington Bridge Fort Pitt Bridge Verrazzano Narrows Bridge Onaruto Bridge Rainbow Bridge Bowstring Arch Bridges Double Layered Truss Girders Sherman Minton Bridge Gwangan Bridge Gogeum Bridge

1. Introduction

Depending on the purpose, a bridge can be planned in various shapes. To enable a large amount of transportation, a bridge designer can apply several design considerations to a bridge design. Let’s look at one of them.

A double-layer bridge provides more space through the double-layer girder to transport vehicles, trains, or pedestrians. This type of girder has enough vertical clearance to carry them. Therefore, it could make clearance issues under the bridge, and also it could make aero stability issues. Nevertheless, the double-layer girder can be one of the available options for a bridge in areas where heavy traffic is expected.

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The Complete Guide to Composite Sections

midasBridge TeamMarch 17, 2022

midas Civil Bridge Insight Ebook

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Load Rating of Steel U-Through Bridge

midasBridge TeamMarch 10, 2022

Bridge Analysis midas Civil Time History Analysis Load Rating Fatigue Analysis Case Study Bridge Engineering

Load Rating of Steel U-Through Bridge

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Interpreting Construction Stage Analysis

midasBridge TeamFebruary 25, 2022

Bridge Analysis midas Civil Construction Stage Bridge Insight Bridge Engineering Structural Analysis Construction Stage Analysis

Interpreting Construction Stage Analysis

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Comparison for Theoretical and Software Output for RSI

midasBridge TeamFebruary 18, 2022

Bridge Analysis midas Civil Bridge Insight Rail Structure Interaction UIC Code RSI Continuous Welded Rail

Comparison for Theoretical and Software Output for RSI

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P-M Interaction Diagram : Circular Section

midasBridge TeamFebruary 10, 2022

midas Civil Bridge Insight P-M P-M Interaction Curve P-M Interaction Diagram

P-M Interaction Diagram: Circular Section

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Spine and Wing Construction

midasBridge TeamFebruary 4, 2022

midas Civil Bridge Insight

Spine and Wind Construction

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Strut-and-Tie Model: Part 2 - Determining STM

midasBridge TeamJanuary 19, 2022

Bridge Insight Strut-and-Tie Model STM Nodal Zone Extended Nodal Zone Subdivision Nodal Zone Truss Model Truss Analogy 45-Degree Truss Model Variable Angle Truss Components of Strut-and-Tie Model Struts Tension Ties

Strut-and-Tie Model

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Common Errors in Bridge Modeling

midasBridge TeamJanuary 14, 2022

midas Civil Finite Element Analysis Bridge Insight Bridge Bearings Bridge Modeling Nonlinear Analysis Bridge Structural Analysis Errors in Numerical Modeling Numeric Modeling Mesh

Common Errors in Bridge Modeling

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The Manyovu Bridge

midasBridge TeamDecember 30, 2021

midas Civil Project Application Slab bridge Moving Load Analysis Solid Slab Bridge Skewed Bridges Continuous Slab Bridge Static Analysis Manyovu Bridge

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