- Structural performance of laminated FRP box girder bridge deck compared to slab on prestressed concrete girder bridge
- H. Almansour ; M.S. Cheung
- NRCC-53572. The 8th Canada Japan Joint Workshop on Composites, Montreal, Canada, July 26-29, 2010, pp. 1-32
- Book Title / Journal:
- Year: 2010 , Volume: , Series:
- Bridge management ; Bridges
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- Towards sustainable design of highway bridges
- Z. Lounis ; L. Daigle
- NRCC-53225. IABMAS 2010 - Bridge Maintenance, Safety, Management and Life-Cycle Optimization, Philadelphia, USA, July 11-14, 2010, pp. 1-7
- Book Title / Journal:
- Year: 2010 , Volume: , Series:
- Bridge management ; Bridges
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- Mechanical properties of clay brick masonry bound with hydraulic limes and hydrated calcium lime
- A. Costigan ; S. Pavía
- Book Title / Journal: 8th International Masonry Conference 2010, Dresden, W. Jäger, B. Haseltine, A. Fried (Eds.)
- Year: 2010 , Volume: , Series:
- Structure types ; Masonry Structures
- Description
- Due to their physical and chemical properties, mortars made with lime are considered to be more
compatible with historic fabrics than those made with artificial cements. This paper explores the
mechanical properties of clay brick masonry bound with hydraulic limes of different strengths, and
hydrated calcium lime (CL90-s) with no hydraulic properties. Masonry wallettes built with a CL90-s
mortar and two natural limes of hydraulic strengths 3.5 and 5 MPa (NHL 3.5 and NHL 5) respectively
were tested for compressive and flexural strength. The strength of the bond between the mortar and
the brick was also measured. The paper concludes that CL mortar masonry displays a plastic
behaviour in compression while the mechanical behaviour of the HL mortar masonry is of a brittle
nature, with wallettes splitting along the centre, cracks above and below the vertical joints and spalling
of brick and mortar.
It also concludes that neither the rate of late strength gain of masonry, nor its ultimate compressive
strength or its bond strength are determined by the mortar nature, thus a mortar of low hydraulic
strength can provide stronger masonry than an emminetly hydraulic mortar. The paper agrees with
previous authors on that the masonry’s compressive strength is more sensitive to the brick-mortar
bond strength than to the compressive strength of the mortar. Finally, the paper demonstrates that the
NHL-mortar compressive strength increases at a higher rate, and reaches higher final values than
that of the NHLmasonry whereas, in contrast, the CL90-s mortar is weaker in compression than the
CL90-s mortar masonry.
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- Modelling RC bridge columns under the combined effects of traffic and reinforcement corrosion
- A.M. Mohammed ; H. Almansour ; B. Martin-Perez
- NRCC-53536. 8th International Conference on Short and Medium Span Bridges, Niagara Falls, Ontario, Canada, August 3-6, 2010, pp. 168-1-168-10
- Book Title / Journal:
- Year: 2010 , Volume: , Series:
- Bridge management ; Bridges
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- Expert system for seismic vulnerability assessment of masonry structures
- S. Churilov
- Book Title / Journal: Proceedings of PROHITEC 09, Rome, 2009, F. Mazzolani (Ed.), Taylor and Francis,
- Year: 2009 , Volume: , Series:
- Structure types ; Masonry Structures
- Description
- Possible method for seismic vulnerability assessment of masonry structures with special attention
to low-rise residential structures in Macedonia is proposed in this paper. For this purpose, special calculation
tool which contains specific knowledge for masonry structures derived by numerical calculations and analyses
is developed. The aim of this assessment tool is to be simple for application even for personnel with slight or no
experience in behaviour of masonry structures under seismic action, so it could be developed as a serious system
for fast and precise assessment of the condition of many structures in a wide region. In this paper, a numerical
model for calculation of the bearing capacity of the structure based on the discrete element method is suggested,
so that it is first application of this relatively new numerical technique for calculation of masonry in Macedonia.
A method for creation of the knowledge base for an Expert System suggested by the given methodology is
presented. Also, results from the application of this methodology are applied on a real structure.
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- Development of a design method for reinforced masonry subjected to in-plane loading based on experimental and numerical analysis
- V.G. Haach ;
- Book Title / Journal: Ph.D Thesis, Universidade do Minho Escola de Engenharia
- Year: 2009 , Volume: , Series:
- Structure types ; Masonry Structures
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- Insight into a model for large strain anisotropic elasto-plasticity
- D.N. Kim ; F.J. Montáns ; K.J. Bathe
- Book Title / Journal: Computational Mechanics
- Year: 2009 , Volume: , Series:
- Structural Analysis
- Keywords: Plasticity ; Anisotropic plasticity ; Orthotropy ; Plastic spin
- Description
- Efficient and accurate simulation of the deformations in anisotropic metallic sheets requires a constitutive model and an accompanying algorithm at large strains which take into account the anisotropy of both the elastic and plastic material behaviors, as well as their evolution with plastic
strains. Recently we proposed such a constitutive model based on continuum energy considerations, the Lee decomposition and an anisotropic stored energy function of the logarithmic strains in which the rotation of the orthotropic axes is also considered. We obtained a framework similar to the one used in isotropic elasto-plasticity. In the presentwork we give some physical insight into the parameters of the model and their effects on the predictions, both in proportional and in non-proportional loading problems.We also present a procedure to obtain the spin parameter of the model from Lankford R-values.
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- Advances in finite element provedures for non-linear dynamic response
- K.J. Bathe
- Book Title / Journal: 2nd South-East European Conference on Computational Mechanics
- Year: 2009 , Volume: , Series:
- Structural Analysis
- Description
- The objective in this presentation is to briefly survey some recent developments in finite element procedures that we have pursued to solve dynamic problems more accurately and more efficiently, and to solve new classes of problems. We present some developments regarding the finite element analysis of shells, the solution of wave propagation problems
with mode conversions, the time integration in long-time large deformation analyses, the solution of normal modes of proteins with the subspace iteration method in nonlinear conformations, and fluid flow-structure interactions.
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- Blast analysis of enclosure masonry walls using homogenization approaches
- P.B. Lourenço ; G. Milani
- Book Title / Journal: International Journal for Multiscale Computational Engineering, 7, 2, 91-113
- Year: 2009 , Volume: , Series:
- Structure types ; Masonry Structures
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- Homogenized rigid-plastic model for masonry walls subjected to impact
- A. Tralli ; P.B. Lourenço ; G. Milani
- Book Title / Journal: International Journal of Solids and Structures, 46,22-23, 4133-4149
- Year: 2009 , Volume: , Series:
- Structure types ; Masonry Structures
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- A triangular six-node shell element
- D-N Kim ; K.J. Bathe
- Book Title / Journal: Computers and Structure
- Year: 2009 , Volume: 87 , Series:
- Structural Analysis
- Keywords: shells ; Finite element ; Triangular element ; Spatial isotropy ; MITC method ; Six-node element
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- A Holistic Method to Design an Optimized Energy Scenario and Quantitatively Evaluate Promising Technologies for Implementation
- C. Deilmann ; K.J. Bathe
- Book Title / Journal: International Journal of Green Energy
- Year: 2009 , Volume: 6 , Series:
- Structural Analysis
- Keywords: Energy system analysis ; Normative scenario technique ; Bottom-up analysis
- Description
- In this article we focus on today’s worldwide energy system, a fundamentally illogical and unsustainable system. Today, 85% of the world wide energy system depends on carbon-based fossil fuels. We develop a holistic method to analyze mankind’s use of energy in a broad way and to design optimized, normative energy scenarios that conform to important scientific principles. The procedure is based on an abstraction process and helps to overcome thinking barriers and prejudice. The proposed method is applied to a general analysis of energy and to a simplified normative energy scenario for the United States in 2060. Important technologies for the implementation are evaluated in a bottom-up analysis. Since research endeavors and
policies affect free-market decisions within the energy system, the developed method aims at
guiding researchers and politicians to embark on strategies toward sustainable and scientifically optimized energy concepts for the future.
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- Advances in Finite Element Procedures for Nonlinear Dynamic Response
- K.J. Bathe
- Book Title / Journal: 2nd South-East European Conference on Computational Mechanics
- Year: 2009 , Volume: , Series:
- Structural Analysis
- Keywords: dynamic ; nonlinear
- Description
- The objective in this presentation is to briefly survey some recent developments in finite element procedures that we have pursued to solve dynamic problems more accurately and more efficiently, and to solve new classes of problems. We present some developments regarding the finite element analysis of shells, the solution of wave propagation problems
with mode conversions, the time integration in long-time large deformation analyses, the solution of normal modes of proteins with the subspace iteration method in nonlinear conformations, and fluid flow-structure interactions.
PDF |
- Experimental Investigation of High Strength Cold-Formed C-Section in Combined Bending and Shear
- C.H. Pham ; G.J. Hancock
- Research Report No R894, School of Civil Engineering, The University of Sydney, Australia
- Book Title / Journal:
- Year: 2009 , Volume: , Series:
- Structure types ; Steel structures
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- Research note: Numerical Study on seismic behaviour of precast concrete zone
- M.H. Arslan ; F.G. Gulay
- Iranian Journal of Science & Technology, Transaction B, Engineering, Vol. 33, No. B1, pages 123-127
- Book Title / Journal:
- Year: 2009 , Volume: , Series:
- Structure types ; Concrete structures
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