Engineering analysis and design software
Bridge design and engineering

Case Study

Mersey Gateway Bridge

  • Analysis of an illustrative design of a 3-tower cable stayed bridge
  • Line beam modelling to investigate global effects
  • Staged construction analysis of a single tower to prove the design

Ramboll was appointed Lead Consultant and Project Manager by Halton Borough Council to carry out a route identification study and illustrative design for a new crossing of the River Mersey in the UK. To assist with its development of the proposed new bridge Gifford used LUSAS bridge analysis software to carry out analytical studies to prove its draft design.

Overview

The Mersey Gateway Bridge is part of a 431million project to ease significant congestion currently experienced by residents of the towns of Runcorn and Widnes in Cheshire, UK, and to improve the resilience of the regional road network. The existing Silver Jubilee Bridge which crosses the River Mersey and connects the two communities is used by over 80,000 vehicles every weekday - ten times the number it was originally designed for. The proposed 2.3km long new toll bridge will provide a landmark new structure carrying 3 lanes of traffic in each direction. Whilst the detailed cosmetic design for the new bridge is yet to be finalised, the illustrative design is based on a cable-stay structure similar to the second Severn Crossing, also in the UK, but with 3 towers - the central one being some 20m shorter than the 135m high outer towers. Three piers in the river carry the 195m, 300m, 300m and 215m spans over the naturally occurring deeper water channels.

Analysis

Using LUSAS, Gifford created a line beam model of the entire crossing to investigate global effects. 

A detailed staged construction model of one tower used activation and deactivation techniques to model the process of building the deck, installing and stressing the stays. 

Overall, modelling and analysis with LUSAS helped Gifford to derive and confirm suitable section sizes and prove the capability of its draft design.

 

Other LUSAS Bridge case studies:

 

Software Information

  Bridge / Bridge plus
green_arrow.gif (94 bytes) Software overview
green_arrow.gif (94 bytes) Modelling in general
green_arrow.gif (94 bytes) Advanced elements, materials and solvers
green_arrow.gif (94 bytes) Load types and combinations
green_arrow.gif (94 bytes) Staged construction modelling
green_arrow.gif (94 bytes) Geotechnical / Soil-structure modelling
green_arrow.gif (94 bytes) Analysis and design
green_arrow.gif (94 bytes) Design code facilities
green_arrow.gif (94 bytes) Viewing results
green_arrow.gif (94 bytes) Software customisation

  Bridge LT
green_arrow.gif (94 bytes) Software overview

  Videos
green_arrow.gif (94 bytes)

  Choosing Software
green_arrow.gif (94 bytes) Software products
green_arrow.gif (94 bytes) LUSAS Bridge LT
green_arrow.gif (94 bytes) LUSAS Bridge
green_arrow.gif (94 bytes) LUSAS Bridge Plus
green_arrow.gif (94 bytes) Software selection

  Software Options
green_arrow.gif (94 bytes) Click to see index
 
  Case Studies
green_arrow.gif (94 bytes)

  Additional Information
green_arrow.gif (94 bytes) Linear and nonlinear buckling analysis
green_arrow.gif (94 bytes) Curved girder analysis
green_arrow.gif (94 bytes) Integral or jointless bridges
green_arrow.gif (94 bytes) Post-tensioning
green_arrow.gif (94 bytes) Concrete modelling
green_arrow.gif (94 bytes) Interactive Modal Dynamics
green_arrow.gif (94 bytes) LUSAS Programmable Interface (LPI)

  General information
green_arrow.gif (94 bytes) Hardware specification
green_arrow.gif (94 bytes) Licencing and Networking options
green_arrow.gif (94 bytes) Software prices
green_arrow.gif (94 bytes) Documentation
green_arrow.gif (94 bytes) Links page
 

Request information

 


LUSAS is a trademark and trading name of Finite Element Analysis Ltd. 
Copyright 1982 - 2017 LUSAS. Last modified: March 02, 2017. Privacy policy

Any modelling and analysis capabilities described on this page are dependent upon the LUSAS software product and version in use.