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Mur Bridge S 35, Austria

Mur Bridge Frohnleiten - For the construction of the Mur Bridge near Frohnleiten, the new VARIOKIT heavy-duty truss from PERI has set new standards in shoring operations.
Mur Bridge Frohnleiten - For transferring the heavy loads over the almost 40 m span, the truss arrangement and spacings can be flexibly determined using a metric grid configuration.
Mur Bridge Frohnleiten - Modular shoring assembly: VARIOKIT system components were pre-assembled on the ground to form truss segments and placed into intermediate storage with the crane. Three such segments were subsequently coupled to create a 37 m long truss unit and lifted over the Mur by means of a mobile crane.
Mur Bridge Frohnleiten - Due to the standardised connections with only a minimum of tool usage, the VARIOKIT construction kit system is easy and simple to assemble.

Project data

Location: Frohnleiten, Austria

  • 406 m long and 11.75 m wide pre-stressed concrete bridge with T-beam cross-section
  • New bridge construction replaces the existing bridge as part of the S35 motorway modernization project between the Bruck/Mur and Graz intersections

Requirements

  • Construction of the bridge superstructure of the two main sections across the Mur on heavy-duty falsework by means of trusses, parallel to the existing bridge
  • Extremely limited assembly and storage areas

Customer

Contractor:
Strabag/Habau Consortium

Scaffolding Contractor:
XERVON Austria GmbH, Maria Lanzendorf

Field Service:
PERI Nußdorf, Austria and PERI Weissenhorn, Germany

Customer's benefit

  • Maintaining the construction schedule through the rapid availability of materials and short assembly times
  • High load-bearing capacity of the VRB heavy-duty truss with comparably low deadweight
  • Easy assembly due to simple alignment of the pairs of trusses and high degree of accuracy
  • Time and cost savings during lifting operations due to the low weight
Heimo Egger, Assembly Supervisor Mur Bridge Frohnhausen, Österreich
Heimo Egger
Assembly Supervisor

The VARIOKIT heavy-duty truss system with the variable starting frame has set new standards in shoring operations. It reduces the amount of assembly work required especially for inclined supporting structures. The accuracy of fit as well as aligning the pairs of trusses also make a convincing case.

PERI solution

  • Customised project solution on the basis of standardised, rentable system components from the VARIOKIT engineering construction kit
  • Coupled, over 37 m long truss girders with flexible truss arrangements and spacings in accordance with static requirements with framework unit spacings of 50 cm and 150 cm
  • Comprehensive range of services with project-specific planning, verifiable static calculations and on-site briefing for the scaffold erectors through a PERI supervisor
  • Standard connections by means of bolts and cotter pins, with site-compliant alignment and lateral bracing using DW 15/20 tie rods