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Metnet Meeting February 2012

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Institute of Steel Structures RESEARCH and Development

Nicole Schillo


RWTH Aachen


RWTH Aachen – Institute of Steel Structures

Institute of Steel Structures, RWTH Aachen

• Professor

• Scientific Staff

• Visiting Scientists

• Non Scientific Staff

• Labourers

• Technical Employees

• Trainees

• Scientific Back Staff

1

24

0

5

6

4

1

30

Total: 71 Employees



Laboratory of Steel Structures with Wind Tunnel

Testing field Hotbox – Climate Chamber Laboratory for Glass


RWTH Aachen – Centre of Metallic Construction (zmb)

Institut für Bildsame Formgebung

1 Professor

35 Scientific Staff 20 Non-scientific Staff

Institut für Eisenhüttenkunde

1 Professor


Lehrstuhl für Stahlbau und

Leichtmetallbau

1 Professor


Institut für Oberflächentechnik

1 Professor

35 Scientific Staff 11 Non-Scientific

Staff

Institut für Kraftfahrwesen

1 Professor


Institut für Schweißtechnische Fertigungsverfahren

1 Professor


zmb 6 Professors


318 Students


RWTH Aachen – Centre of Metallic Construction (zmb)

Laboratory at Centre of Metallic Construction (zmb)

CNC folding

equipment Coating unit Static and cyclic testing Servo-hydraulic

testing machine


RWTH Aachen – Institute for Steel Structures

floor

ceiling water conduit

Numerical investigations

FEM Simulations (MARC, ANSYS, ABAQUS)

Multi Body Dynamic Simulations (MEPHISTO)

CFD Simulations (Phoenics)

Thermal Building Simulations (TRNSYS)

Daylight Simulations (ADELINE)

BEM Simulations



Main Application Areas:

Steel Structures

Light Weight Structures

Wind Engineering

Structural Glazing and Bonding

Composite Structures

Building Physics

Head of Institute:

Prof. Dr.-Ing. Markus Feldmann


Standardisation Software Development

• Eurocode 1- Basis of design and

actions on structures

• Eurocode 3 - Design of steel structures

• Eurocode 4 - Design of composite

steel and concrete structures

• Eurocode 8 - Design provisions for

earthquake resistance of structures

• Eurocode 9 -Design of aluminium alloy

structures

• Richtlinie für tragende Glasbauteile

• DASt-Richtlinie 009 - Choice of steel

grade

• ENV 1090 -Design

• CoP - Design of the Connection

• DYNACS

Dynamic non-linear analysis of

composite and steel structures

• MEPHISTO

Multibody systems with elastic

-plastic hinges and changeable

structure organisations

• Kanet

Design of canal networks

• Kamin

Design of steel chimneys



RWTH Aachen – Structural Glazing

Stabilitätsuntersuchungen

Knicken und Biegedrillknicken

an Bauteilen aus Glas

IHK München: ambild/A. Müller

Glaspavillon Rheinbach

Stadtverwaltung St. Germain-en-Laye


RWTH Aachen – Structural Glazing

14

Quality control of heat strengthened and fully tempered glass panels

– Use of Photoelasticity

Inhomogeneous

prestress

distribution

Homogeneous

prestress

distribution

Fracture pattern

Inhomogeneous

fracture pattern

Homogeneous

fracture pattern

Polarizing filter images


AiF Project: “KLAX”, 2011 – 2013 (German research project)

“Simplified design approach for elastic bonded joints subjected to multiaxial stress states with respect to nonlinear material behavior”

RWTH Aachen – Bonding

Sukkah – Jüdisches Museum, Berlin Structural Sealant Glazing

Project partners: • RWTH Aachen, Institute of Steel Construction • University of Kaiserslautern, Workgroup Materials and Surface Technologies

Glasbauteil

elastische

Klebfuge

Rahmen

Belastungen

Glasbauteil

elastische

Klebfuge

Glasbauteilelastische

Klebfuge

Rahmen

Belastungen

• Aims / Objectives

– Development of basics design principles for complex

elastic-plastic adhesive joints applicable in practice

– Focus: multiaxial adhesive stress states of linear

bonded joints (SSG facades, solar panels)


RWTH Aachen – Building Physics

Hot-Box Investigations

Infrared Analysis

Air-tightness Testing

Numerical Investigations

Outside

Inside

Moisture

Wall

HEB 200


RWTH Aachen – Building Physics

Sustainability of steel construction (Examples)

• Certification of buildings according DGNB

• Assessment and scientific studies concerning specific aspects of sustainability (Life cycle assessment depending on construction material and design of structure)


RFCS Project: “HISTWIN2”, 2011 – 2014

“HIgh Steel tubular Towers for WINd turbines”


– development of an high steel tubular tower

made of modular segments to reach hub hights

of 100 m and higher

– developement of foundations with

micropiles

RWTH Aachen – Steel Structures


RFCS Project: “ADBLAST”, 2010 – 2013

“ADvanced design methods for BLAST loaded steel structures”


– Design guidance for blast resistance of typical

industrial buildings

– Blast tests on key non-structural and structural

assemblages

– Dynamic material

characterisation

– comparative static tests



RFCS Project: “BriFaG”, 2008 – 2011

“Bridge Fatigue Guidance”


– Development of bridge fatigue guidance for

the sustainable design and assessment of

steel bridges subjected to fatigue

– systematic investigation on the fatigue

strength of fillet welds loaded multi-axial

(toe cracking, FAT 71)

– in-plane multi-axial fatigue tests


Pz

Py




– Investigation of principale stress ranges taken

from the strain history measures with

strain gauges

– Determination of rotation of principal stress

angle due to cracking


crack

initiation

fatigue failure

40 mm



• Outcome

– EC3 gives safe-sided results for the tests performed

– The amount of shear stress Δτ and its result on the fatigue life under

combined loading rather plays a minor role



RFCS Project: “ELEM”, 2008 – 2011

“Composite Bridges with Prefabricated Decks”


― Elaboration of cost effective structures with short

erection times

RWTH Aachen – Composite Structures

Image size: 11,29 cm x 10,79 cm

http://www.pwr.wroc.pl/en_main.xml


RFCS Project: “ELEM”, 2008 – 2011

“Composite Bridges with Prefabricated Decks”


― Elaboration of cost effective structures with short

erection times

― Tests on the effective width of composite bridges using

full depth prefabricated deck elements and „dry joints“



RFCS Project: “EcoBridge”, 2010 – 2013

“Demonstration of ECOnomical BRIDGE solutions based on innovative composite dowels and integrated abutments”



RFCS Project: “EcoBridge”, 2010 – 2013


– Measuring of strains in compositite dowels with

clothoidal shape

– Measuring of displacement of rail support point

– Measuring of relaxation of pre-tensioned bolts

– Measuring of temperature


Strain Gauges

Displacement

Transducer


Architecture:

Calatrava

New Main Train Station Liège Niedersachsen Stadium, Hanover

RWTH Aachen – Wind Engineering: Wind tunnel simulations

Wind Engineering: Wind Tunnel Investigations

• Measurements on external and internal pressures (incl. snow effects)

• Investigation of the dynamic structural behavior due to wind loads


RWTH Aachen – Wind Engineering: Wind load concepts and structural responses

Wind tunnel measurements

for load standardisation

Wind load expertises

for special structures

Measurements under

natural wind conditions

Modelling and

simulation

Stadium of the 1. FSV Mainz 05 New load concepts for the global design of

industrial buildings

Permeable Claddings

Artificial wind field and dynamic

response of a prestressed membrane

cladding element


www.stb.rwth-aachen.de


Thank you very much for your attention!

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