träbyggnad - chalmers...3d strut-and-tie models for design of discontinuity regions in rc...
TRANSCRIPT
Structural Engineering Center
Träbyggnad - nysatsning som bygger på gedigen tradition
Robert Jockwer, Konstruktionsteknik Chalmers: “Development in timber engineering and outlook to future trends in research”.
Rasoul Atashipour, Konstruktionsteknik, Chalmers: “New research and development in the field of timber structures”
15:15 – ca 16:00
Coffee break
Mathias Fridholm, Direktör Svenskt Trä
Karl-Gunnar Olsson, Arkitekturens teori och metod, Chalmers: "Arkitektur och träbyggnadsteknik"
Yutaka Goto, Byggnadsteknologi, Chalmers: ”Sustainable use of wood in built environment.”
13:30 – ca 14:45
16:00 – 16:30 Areas for MSc-thesis proposals in Structural Engineering 2020
Agenda
AREAS FOR MASTER THESIS
PROPOSALS IN
STRUCTURAL ENGINEERING 2020
Chalmers Structural Engineering Center– Effective exchange & collaboration with industry in research ..– in a clearer and more structured way
Workshop ”Samverkan mellan näringslivet och högskolan” den 16e maj - 2018
”Collaboration around MSc-thesis is an excellent platform for collaboration around research and development questions”
Proposal for ”structured initiation and follow up of MSc-thesis” Forum-meeting September 27th, 2018
Internal work & follow up with KC-members
• High-quality thesis work, within- common areas of interest - current fields of competence
• Use MSc-thesis to create larger collaboration areas between university and industry in the field of research and research education
• Together, find a comoon and clear structure for the initiation and follow up of MSc-thesis
Secure resources for supervision and examination
Goal:
”New principles” for initiating and floowing up MSc-thesis in collaboration with industry
Chalmers Secure examiners& supervisors
Chalmers Propose areas for MSc-thesis Before summer
”report” interest Propose new areas/projects Industry
Early September
”Communication”
Offer studnets projectsMid October
Questions & comments?
Proposals for MSc thesis areas in Structural Engineering
Textile reinforced concrete
Examiner:[email protected]
Examples of master thesis proposals• Experimental programme including
pull-out tests, tensile tests, and four-point bending tests on TRC plates. (Can also be divided into several projects)
• Application of, and further development of, earlier developed multiscale modelling methods.
Structural effects of reinforcement corrosion
Examples of master thesis proposals• Correlating cover cracking to
reinforcement corrosion • Ductility of structures with corroded
reinforcement • Suitable strengthening and repair
methods for corrosion-damaged structures
Examiner:[email protected]
Life cycle analysis in hybrid reinforced structures
Examples of master thesis proposals• Develop a calculation template of
LCC and LCA for hybrid reinforced structures, with the aim to perform parametric analysis.
• Provide optimized design solutions and guidelines with respect to structural safety, LCC and LCA.
Examiners:[email protected], [email protected]
Design of impulse loaded structuresExamples of master thesis proposals• Drop weight impact tests of RC beams; study of dynamic structural response using DIC • Plastic deformation capacity and residual strength of impulse loaded concrete structures • Possibility to use FRP to strengthen impulse loaded concrete structures
Examiners:[email protected], [email protected]
Crack widths in concrete structures
Examiner:[email protected]
Examples of master thesis proposals• Crack width prediction from non-linear
FE analysis on different levels of detailing
• Comparison to crack widths from tests with digital image correlation.
• Crack widths for restraint loads• Crack widths for external loads
3D strut-and-tie models for design of discontinuity regions in RC structures
Examiner:[email protected]
Examples of master thesis proposals• Validation of enhanced 3D strut-and-
tie method by comparison to tests• Evaluation of enhanced 3D strut-and-
tie method through practical applications
• Determination of 3D strut-and-tie models from FE topology optimization
A new Eurocode part for design of steel structures with FEM (1993-1-14) is emerging (EN 1993-1-14)Several proposals with the aim to create better understanding of the new rules and how they should be applied in a designs based on FE-analysis.
Parametric design of stiffened plates using FEM
Stability verification of steel structures with FEM
DESIGN OF STEEL STRUCTURES WITH FEM
Examiner:[email protected]
Imperfection2nd-order effectsMethods of analysis
• Evaluation of traffic load effects in road bridges
• Parametric design and optimization of steel bridges w r t fatigue
• Extending the fatigue life of existing steel bridges – Post-weld treatment
• Welding of reinforcement – industrialized production with possibilities & challenges
FATIGUE IN WELDED STEEL STRUCTUYRES
Examiner:[email protected]
2019-05-23 Chalmers University of Technology 16
STRUCTURALBEHAVIOR AND DESIGN OF WHOLEFRP STRUCTURESExamples of master thesis proposals
• Buckling and post buckling behavior of FRP plates under compression loads
• Design models for steel-FRP hybrid bridges with and without composite action – optimization and cost efficiency
• Design of FRP eco-bridges with respect to permanent loads and viscoelastic behavior
• Manufacturing of large scale, heavy duty web-core FRP sandwich panels for bridge applications – with focus on debonding issue
• Wireless structural health monitoring of FRP bridges using advanced sensors
Examiner: [email protected]
2019-05-23 Chalmers University of Technology 17
STRENGTHENINGAND REPAIR WITH FRP COMPOSITESExamples of master thesis proposals
• Effective strengthening of aged concrete bridges using CFRP laminates
• Developing bond-slip models for design of bonded prestressed CFRP laminates
• Application of FE analysis for design of strengthening in aged concrete bridges
• Environmental durability of bonded FRP strengthening systems
Examiner: [email protected]
2019-05-23 Chalmers University of Technology 18
DIGITALISATIONAND FEM IN TIMBER ENGINEERINGExamples of master thesis proposals
• Making EC5 compatible with FE Modelling –development of recommendations for the use of FEM in the design of timber structures.
• Using digital tools in the design of timber structures –implementing timber relevant criteria into planning software for the conception of timber structures
• Accounting for non-linearity in the safety concept of Eurocodes
IsoLC1N
Max N: 5.57, Min N: -5.03 [kN]
Examiner: [email protected]
2019-05-23 Chalmers University of Technology 19
HYBRID TIMBER STRUCTURESExamples of master thesis proposals
• Modern Timber Bridges –concepts for durable and high-performance bridges.
• Timber concrete composites for application in buildings and infrastructure – impact of moisture and humidity during the entire lifecycle of TCC structures.
Examiner: [email protected]
2019-05-23 Chalmers University of Technology 20
CONNECTIONS IN TIMBER STRUCTURESExamples of master thesis proposals
• Durable and reliable connections –how to avoid timber failure modes
• Combined loading of fasteners in lateral and axial direction –are current design rules safe and economic?
• Enhanced performance of connections: strength and stiffness vs. acoustic isolationand ease of application
• Prefabrication and design for deconstruction – development of concepts for reusable connections
𝐹𝐹𝑎𝑎𝑎𝑎,𝐸𝐸𝐸𝐸
𝐹𝐹𝑎𝑎𝑎𝑎,𝑅𝑅𝐸𝐸
2
+𝐹𝐹𝑣𝑣,𝐸𝐸𝐸𝐸
𝐹𝐹𝑣𝑣,𝑅𝑅𝐸𝐸
2
≤ 1
Examiner: [email protected]
2019-05-23 Chalmers University of Technology 21
MATERIALS AND MECHANICS OF TIMBER STRUCTURESExamples of master thesis proposals
• Long term behaviour of structures –development of enhanced models for the prediction of strength and deformation of modern materials, advanced applications and modern structures
• Stresses and failure modes in support areas of secondary beams
• Accounting of the interaction of stresses in curved beams for arch bridges or halls
Examiner: [email protected]
