cen/tc250 tensinet wg eurocode · tensinet wg eurocode marijke mollaert vienna, 22 november 2012...

1

Vienna, 22 November 2012 1

EUROCODESMembrane Structures

CEN/TC250

CEN/TC250 WG5

TensiNet WG Eurocode

Marijke Mollaert

Vienna, 22 November 2012



TensiNet WG Specifications - Eurocode

Recent WG5 meetings

� �

� 8th of February 2012, Virtual

Skype meeting

� 28th of March 2012, Paris

� 25th of April 2012, Virtual

Skype meeting




Recent WG5 meetings

� �


Skype meeting



Skype meeting

� 5th of September 2012,

Paris: comments integrated

in the master document, on

livelink!




Recent WG5 meetings

� �


Skype meeting



Skype meeting

� 5th of September 2012,

Paris: comments integrated

in the master document, on

livelink!

� 25th October 2012, Virtual

Skype meeting







Email from Barry Haseltine:� Prepare technical rules in

the form of technical

recommendations as

‘Scientific and Technical

Report’

� an advance version of the

proposed code, not fully

worked up, but giving the

main elements

2




� specify the complete design

process for membrane

structures, from the rules for

formfinding over the static

analysis to the membrane

stress verification =

compatible with the Draft

document




When will such Scientific and

Technical Report be finalised?

Who will publishing it?

How will the outcome be

integrated into the TC 250

Work Programme?

The mandated work can only

start when TC 250 approved

the conversion of the Scientific

and Technical Report into CEN

Technical specifications�




It took 4 years to write the

TensiNet Design Guide in

the framework of a

European-funded thematic

network!

In the Eurocode more topics

will be covered: � Pneumatic structures

� Advanced material

characterisation

� Foils

� �




Scientific and Technical

Report finalised? 2 years

Some sections progress well

Some not at all � Today + 5th December

� Approve the updates

� Solve the question marks

� Complete Sections 3, 4, 5, 9

and 10� Basis of structural analysis

� Manufacture/fabrication,

handling & packing &

installation

� Inspection/maintenance




CEN TC250 meeting

� �

� 15-16 November 2012,

Madrid




10 106€/year funding for all

standardisation

The CEN TC250 project

asking for a funding of 4

106€/year: not possible

All CEN-work which we plan

will be mentioned in the

Description Of Work

document

3




http://cen.iso.org/livelink/livelink?func=ll&objId=3670687&objAction=browse&sort=name




Who can read the files on livelink? 15




WG5 members

If not listed on

livelink:

please ask the

responsible

person of the

national

standardisation

body to be

registered

Per Athos Eckerbom Firm SE

Roberto Canobbio Firm – Design & Fabricator IT

Giorgio Novati University IT

Farid Sahnoune Technical textiles producer FR

Florence Roudot

Odile Caillat

Céline LA ROSA Service national d'ingénierie aéroportuaire FR

Jean-Marc MARION AIA Ingénierie FR

Jean-Christophe THOMAS University Nantes FR

Marc Malinowsky Firm – Design & Engineering FR

Peter Gosling University of Newcastle UK

Clare Price

Nick Gibson Firm – Design & Engineering UK

Sten Nielsen DK

Frank Jensen Firm – Engineering DK

Guy Buyle Laboratory BE

Marijke Mollaert University BE

Bernd Stimpfle Firm – Design & Engineering DE

Natalie Stranghöner, Jörg Uhlemann University DE

Heidrun Balz-Bögner Laboratory DE

Seethaler Markus Firm DE

Gregor Grunwald

Kai-Uwe Bletzinger Technische Universität München DE

Peter Siemens Technical textiles produces DE

Faruk Bilginoglu Technical textiles producer DE

Andreas Schleifer

Markus Balz Firm – Engineering DE

Ramon Sastre Firm – Design & Engineering ES

Juan Monjo-Carrió University ES

Josep Llorenz University ES

Rogier Houtman Firm - Engineering Nl




Through livelink the national

mirror committees are informed

about the activities of CEN

TC250 WG5

� They receive the mailings

� Access to the work files




Partial safety factor γf applied on the action effect

EA 1000,000 kN/m EAfactor 1 EAnew 1000,000 kN/m

load q 1,000 kN/m gf 1 1,000 kN/m

gf effect 1,5

L 5,000 m

prestress p 5,000 kN/m gp 1 5,000 kN/m

sag f 0,259 m

R 12,195 m (L**2+4f**2)/8L circular shape

angle 0,413 2asin(L/2R)

arc length 5,036 m angle*R

axial force N 12,195 kN R*p radial load

strain 0,007 (N-p)/EA

arc length 5,036 m L*(1+strain)

0,000 SLS

horizontal force 11,936 kN cos(angle/2)*N F 17,904 kN




4




Preparation of a JRC

background document� Explain why wind loading on

membrane structures is so

specific and complex








� Draft = part of the TensiNet

Design Guide with cp values

for specific shapes is used

(annexes A1 and A2)








� Draft = part of the TensiNet

Design Guide with cp values

for specific shapes is used

(annexes A1 and A2)

� Review this document +

provide additional

information

� To be compatible with

Eurocode 1991-1-4




Make a list of source

documents!

Barry Haseltine can review

draft documents

Make sure the draft is

‘accepted’ by CEN TC250

For a JRC publication:

provide a word document,

a template exists, JRC

does the lay-out

[email protected]




Steve Denton:

Task 1Incorporate the preparation of

Scientific and Technical

Report on membrane

structures in the overall CEN

TC250 work plan (*)

Also the background document

on wind loading on

membrane structures

Task 2Convert (*) into CEN Technical

specifications




Materials & analysis

� Round robin 1 - follow-up of

the design procedures

� Round robin 2 - interpretation

of biaxial & shear test data

5




Next meetings

� 5th December 2012: WG5

meeting in Paris

� The 43rd CEN TC250

meeting is planned the 27th

and 28th May 2013 in

Copenhagen

cen/tc250 tensinet wg eurocode · tensinet wg eurocode marijke mollaert vienna, 22 november 2012...

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