Study of concrete–timber composite beams using an analytical approach based on the principle of virtual work and experimental results

Mascia, Nilson Tadeu; Forti, Nadia Cazarim da Silva; Soriano, Júlio; Nicolas, Elias Antônio; Forti, Tiago

doi:10.1016/j.engstruct.2012.07.035

Cited by 10 publications

(7 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This is an evident quality of the analytical formulation, much simpler to be used. The other results of the implemented program are presented in Figures [11], [12], [13], and [14] for the simulation with . Figure [ 13] shows the graphics of normal forces.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Finite element analysis of composite concrete-timber beams

Forti

Jacintho

et al. 2015

Rev. IBRACON Estrut. Mater.

View full text Add to dashboard Cite

In the search for sustainable construction, timber construction is gaining in popularity around the world. Sustainably harvested wood stores carbon dioxide, while reforestation absorbs yet more CO2. One technique involves the combination of a concrete slab and a timber beam, where the two materials are assembled by the use of flexible connectors. Composite structures provide reduced costs, environmental benefits, a better acoustic performance, when compared to timber structures, and maintain structural safety. Composite structures combine materials with different mechanical properties. Their mechanical performance depends on the efficiency of the connection, which is designed to transmit shear longitudinal forces between the two materials and to prevent vertical detachment. This study contributes with the implementation of a finite element formulation for stress and displacement determination of composite concrete-timber beams. The deduced stiffness matrix and load vector are presented along to numerical examples. Numerical examples are compared to the analytical equations available in Eurocode 5 and to experimental data found in the literature.

show abstract

Section: Resultsmentioning

confidence: 99%

“…In the present work, the formulation presented in FORTI [11] and MASCIA et al [12] was adopted. The formulation is based on the principle of virtual works.…”

Section: A Variational Formulation For Concrete-timber Composite Beamsmentioning

confidence: 99%

Finite element analysis of composite concrete-timber beams

Forti

Jacintho

et al. 2015

Rev. IBRACON Estrut. Mater.

View full text Add to dashboard Cite

show abstract

“…Note that the bending moments of two beams can also be obtained by solving Eqs. (2), (6), (9), (20) and (21) from which the vertical deformations of each beam layer can be obtained. By equating the two vertical deformations, the coefficient A is obtained as,…”

Section: Scenario 11 -Sticky Interface With the Tenon Not Under Shearmentioning

confidence: 99%

“…The efficiency of a layered beam generally relies on the connection system at the interface [8,9], and many models have been developed for studying composite layered beam. The two-layer simply supported beam has been modeled as rigidly connected with evenly distributed shear connectors [3][4][5][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Nonlinear analytical model of a two-layer wooden beam in a heritage structure

Cao

Yang

Law

2015

Engineering Structures

View full text Add to dashboard Cite

“…The authors of [6] propose a mathematical model to assess the stressed-strained state of a timber-concrete bending element, based on the principle of virtual movements. The study focuses on identifying deflections by solving a system of equations that describe the equilibrium of a composite structure system.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Calculation of the composite timberreinforcedconcrete bending elements considering the nonlinear work of the joint

Shekhorkina¹,

Savytskyi²,

Nikiforova³

et al. 2020

EEJET

View full text Add to dashboard Cite

A method has been proposed to calculate the composite timber-concrete bending elements taking into consideration the non-linear work of a nail joint and the stretched reinforcement in a slab. An acting building code regulates the structure estimation based on the linear-elastic work while the pattern of the joint's deformation under loading demonstrates a pronounced non-linear character. Estimation formulae do not account for the presence of reinforcement in a concrete slab, which leads to the irrational use of the structure's load-bearing properties. A dependence has been proposed to determine the slip modulus. The determining coefficients are computed based on the rated characteristics given in the acting design standards. An algorithm for calculating the composite timber-concrete bending structures has been given, taking into consideration the deformation diagram of the joint and reinforcement in the stretched zone of a concrete element. It has been established that the normal stresses for the considered variants of timber-concrete beams, determined on the basis of the proposed procedure and the linear-elastic model, differ by 1-8 %. At loads corresponding to plastic deformations, those stresses that were estimated in line with the linear-elastic model prove to be understated. At loads exceeding 0.75 kN/m for the beam with a span of 3 m, and 0.5 kN/m for the beam with a span of 5 m, stresses in the stretched region of a concrete slab exceed the concrete stretching strength while the stresses in a timber beam do not reach the ultimate values. In fact, in this case, the structure's load-bearing capacity is underutilized because the stretching effort in the cross-section with a crack is accepted by the reinforcement. Based on the design features of timber-concrete floors (the thickness of a slab and protective layer), an analysis of the load-bearing capacity considering the reinforcement has been performed. It has been established that the load-bearing capacity of a slab ensures that an estimated bending momentum is tolerated up until the loads that cause the destruction of the timber beam. At the same time, the conditions for the rational operation of compressed concrete and stretched reinforcement are met

show abstract

Study of concrete–timber composite beams using an analytical approach based on the principle of virtual work and experimental results

Cited by 10 publications

References 15 publications

Finite element analysis of composite concrete-timber beams

Finite element analysis of composite concrete-timber beams

Nonlinear analytical model of a two-layer wooden beam in a heritage structure

Calculation of the composite timberreinforcedconcrete bending elements considering the nonlinear work of the joint

Contact Info

Product

Resources

About

Study of concrete–timber composite beams using an analytical approach based on the principle of virtual work and experimental results

Cited by 10 publications

References 15 publications

Finite element analysis of composite concrete-timber beams

Finite element analysis of composite concrete-timber beams

Nonlinear analytical model of a two-layer wooden beam in a heritage structure

Calculation of the composite timber­reinforced­concrete bending elements considering the nonlinear work of the joint

Contact Info

Product

Resources

About

Calculation of the composite timberreinforcedconcrete bending elements considering the nonlinear work of the joint