Phone: +49(0)3643/58 4107
Room 101
Berkaer Straße 9
E-Mail: bastian.jung[at]uni-weimar.de

Evaluation of Coupled Partial Models for the Assessment of Restraint Effects in Reinforced and Prestressed Concrete Structures

The numerical analysis and the quantitative assessment of restraint effects in reinforced and prestressed concrete structures are the focus of this research topic. Therefore the evaluation of uncertainties occurring from different partial and coupled partial models in the field of material-, load-, soil-, etc. models must be considered. The influence from the model selection in the range of coupled numerical partial models concerning a structural behaviour is estimate quantitative.

The assessment of the behaviour of reinforced and prestressed concrete structures under combined restraint-load loading is the aim of this research topic. For the numerical simulation of the cross section and structural behaviour, a high number of different partial models in several fields are available for the civil engineer. This research evaluates how partial models and combinations of partial models (coupled partial models) effect the assessment of restraint forces.

A Range of partial models in this field of model selection have an influence according the behaviour of reinforced and prestressed concrete structures, such as:

-   on physical level:
      -    
description of the constitutive relations for concrete, reinforcement,
            prestressing steel
      -    
tension-stiffening
      -    
short- and longtime behaviour
      -    
area affected by reinforcement
      -    
effects occurring from prestressing
      -    
soil-behaviour

-     on loading level:
      -     internal restraint effects
             -    
shrinkage with interaction according creep
             -    
confined deformations
      -    
external restraint effects
             -    
temperature
             -    
support settlements or support rotations
             -     c
hanges in structural system (states during construction)

In this research topic, the influence of partial models and coupled partial models according restraint effects in reinforced and prestressed concrete structures are analysed and assessed quantitative.

Tutors

Prof. Dr. Guido Morgenthal
Bauhaus-Universität Weimar
Department of Concrete Structures and Bridge Engineering
Weimar, Germany

Prof. Ph.D. Dong Xu
Tongji University
Department of Bridge Engineering
Shanghai, China

Journal Papers

2014

H. Keitel, B. Jung, H.B. Motra, H. Stutz,
Quality assessment of coupled partial models considering soil–structure
coupling
,
Engineering Structures 59 (2) (2014) 565–573.

2013

C. Liu, D. Xu, B. Jung, G. Morgenthal,
Reinforcement design for the anchorage of externally prestressed bridges with „tensile stress region“,
Computers and Concrete 11 (5) (2013) 383-397.

B. Jung, G. Morgenthal, D. Xu,
Integral bridges: sensitivity of limit state modelling,
Bautechnik - Sonderdruck “Modellqualitäten” 90 (2013) 32-40.

H. Keitel, H. Stutz, B. Jung, H.B. Motra,
Prediction quality of coupled partial models - Influence of different coupling scenarios on the soil-structure interaction,
Bautechnik - Sonderdruck “Modellqualitäten” 90 (2013) 19-25

Conference Papers

2012

B. Jung, H. Stutz, G. Morgenthal, F. Wuttke
Uncertainty Analysis of stiffness prediction for pile group models
10th International Probabilistic Workshop
Stuttgart, 15-16 November 2012
ISBN 978-3-921837-67-2.

B. Jung, G. Morgenthal
Assessment of Coupled Numerical Models applied to semi-integral bridge
18th Congress of IABSE "Innovative Infrastructures - Toward Human Urbanismn"
Seoul, 19-21 September 2012
ISBN 978-3-85748-127-7. 

B. Jung, G. Morgenthal
Global model quality evaluation of coupled partial models for
restraint effects in reinforced and prestressed concrete structures

The 9th fib International PhD Symposium in Civil Engineering
Karlsruhe, Karlsruhe Institute of Technology (KIT), 22-25 July 2012
ISBN 978-3-86644-858-2. 

B. Jung, G. Morgenthal
Assessment of integral bridges using quantitative model evaluation
19th International Conference on the Application of Computer Science and Mathematics in Architecture and Civil Engineering
Weimar, Bauhaus-Universität Weimar, 04-06 July 2012
ISSN 1611-4086.

B. Jung, G. Morgenthal
Uncertainty analysis of tension stiffening approaches in reinforced concrete
structures for the model quality evaluation

fib Symposium Stockholm 2012 "Concrete Structures for Sustainable Community''
Stockholm, KTH Royal Institute of Technology, 11-14 June 2012
ISBN 978-91-980098-1-1.              


2011

B. Jung, H.-G. Timmler, G. Morgenthal, H. Schröter
Restraint Effects in Reinforced and Prestressed Concrete Structures
IABSE-IASS Symposium "Taller, Longer, Lighter - Meeting growing demand with limited resources"
London, 20-23 September 2011
ISBN 978-0-7079-7122-3.