Wildlife Crossing AM2 in Carinthia, Austria

Structures Analysed with Dlubal Software

  • Customer project

Customer Project

20 March 2018

001110

Austria

RFEM

Bridges

Concrete Structures

The wildlife crossing AM2 has been built with a construction method for concrete shell structures called Pneumatic Forming of Hardened Concrete (PFHC). This new method has been developed by the TU Wien in the context of the research project "Double Curved Shell Structures".

Investor and Design Austrian Federal Railways (ÖBB)
www.oebb.at
Geometry Optimization and Structural Analysis Technische Universität Wien
Institute of Structural Engineering
www.tuwien.ac.at

The new bridge spans the new double-track line of the Koralm Railway in the south of Carinthia. In order to test as many design details as possible, a first test shell on a scale of 1:2 was built, now being used as a roofing for events.

Functioning of Construction Method PFHC

First, a flat concrete slab with wedge-shaped outlets, in which wedge-shaped air cushions are mounted, is casted. On the slab's edge, unbonded tendons are placed in sheathes. Subsequent to the concrete's hardening, an air cushion lying underneath is blown up, transforming the concrete slab into a double curved shell. At the end of the transformation, the tensioning cables are prestressed additionally. They are anchored as soon as all joints are sealed with concrete or grout.

Construction of Wildlife Crossing

The thickness of the transformed shell is 10 cm and supplemented by a concrete topping of 35 cm. Fine cracks arising during the transformation are sealed by this additional layer of concrete. The bottom side of the shell is free from cracks due to the compression zone located there during the transformation.

The entire shell structure of the bridge has ground plan dimensions of 36.7 x 38.7 m and a height of 8.9 m. Its shape is based on the supporting structure's optimization corresponding to the occurring loads and given boundary conditions. Due to this optimization, a state of membrane stress is reached which is favorable for the structural behavior.

The ecological balance of the wildlife crossing has been impressive. In comparison to a reinforced concrete frame originally planned as a crossing alternative, the environmental pollution could be reduced by about 40%, evaluated with regard to the global warming potential (CO2 equivalents).

Write Comment...

Write Comment...

  • Views 750x
  • Updated 14 January 2021

Contact us

Do you have questions or need advice?
Contact our free e-mail, chat, or forum support or find various suggested solutions and useful tips on our FAQ page.

+49 9673 9203 0

info@dlubal.com

CSA S16: 19 Steel design in RFEM

CSA S16:19 Steel Design in RFEM

Webinar 10 March 2021 2:00 PM - 3:00 PM EST

Online Training | English

Eurocode 5 | Timber structures according to EN 1995-1-1

Online Training 17 March 2021 8:30 AM - 12:30 PM CET

Online Training | English

Eurocode 3 | Steel structures according to DIN EN 1993-1-1

Online Training 18 March 2021 8:30 AM - 12:30 PM CET

Online Training | English

RFEM | Dynamics | USA

Online Training 23 March 2021 1:00 PM - 4:00 PM EST

Plate and Shell Buckling Utilizing Dlubal Software

Plate and Shell Buckling Utilizing Dlubal Software

Webinar 30 March 2021 2:00 PM - 2:45 PM

RFEM for Students | USA

Online Training 21 April 2021 1:00 PM - 4:00 PM EST

RFEM | Timber | USA

Online Training 5 May 2021 1:00 PM - 4:00 PM EST

Online Training | English

Eurocode 3 | Steel structures according to DIN EN 1993-1-1

Online Training 6 May 2021 8:30 AM - 12:30 PM

Online Training | English

Eurocode 2 | Concrete structures according to DIN EN 1992-1-1

Online Training 11 May 2021 8:30 AM - 12:30 PM

Online Training | English

Eurocode 5 | Timber structures according to DIN EN 1995-1-1

Online Training 20 May 2021 8:30 AM - 12:30 PM

Online Training | English

RFEM | Structural dynamics and earthquake design according to EC 8

Online Training 2 June 2021 8:30 AM - 12:30 PM

Online-Schulungen | English

RFEM | Basics | USA

Online Training 17 June 2021 9:00 AM - 1:00 PM EST

The Most Common User Errors With RFEM and RSTAB

The Most Common User Errors With RFEM and RSTAB

Webinar 4 February 2021 2:00 PM - 3:00 PM CET

Member design according to ADM 2020 in RFEM

ADM 2020 Member Design in RFEM

Webinar 19 January 2021 2:00 PM - 3:00 PM EST

Dlubal Info Day

Dlubal Info Day Online | 15 December 2020

Webinar 15 December 2020 9:00 AM - 4:00 PM CET

Stability Design in Steel Construction with RFEM and RSTAB

Stability Design in Steel Construction with RFEM and RSTAB

Webinar 1 December 2020 2:00 PM - 2:45 PM CET

FEM - Troubleshooting and Optimization in RFEM

FEA Troubleshooting and Optimization in RFEM

Webinar 11 November 2020 2:00 PM - 3:00 PM EST

Soil-Structure Interaction in RFEM

Soil-Structure Interaction in RFEM

Webinar 27 October 2020 2:00 PM - 2:45 PM CET

NBC 2015 Modal Response Spectrum Analysis in RFEM

Webinar 30 September 2020 2:00 PM - 3:00 PM EST

Documenting Results in the RFEM Printout Report

Documenting Results in the RFEM Printout Report

Webinar 25 August 2020 2:00 PM - 2:45 PM

ACI 318-19 Concrete Design in RFEM

Webinar 20 August 2020 2:00 PM - 3:00 PM EST

How to Be More Productive Using RFEM

How to Be More Productive Using RFEM

Webinar 7 July 2020 3:00 PM - 4:00 PM

Introduction to Solid Modeling \n in RFEM

Introduction to Solid Modeling in RFEM

Webinar 30 June 2020 2:00 PM - 3:00 PM EST

Modeling with Solids in RFEM

Modeling with Solids in RFEM

Webinar 9 June 2020 3:00 PM - 3:45 PM

RFEM Main Program
RFEM 5.xx

Main Program

Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements

Price of First License
3,540.00 USD