Repair and Strengthening of Traditional Timber Roof and Floor Structures

Branco, Jorge M.; Descamps, Thierry; Tsakanika, Eleftheria

doi:10.1007/978-981-10-5858-5_5

Cited by 16 publications

(11 citation statements)

References 12 publications

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“…In addition, attention must also be given to the cultural heritage criteria, for example in Italy the timber-concrete approach for strengthening old timber floors was often rejected by responsible authorities due to claims that the measure is not reversible [6].…”

Section: Timber-concrete Composite Floorsmentioning

confidence: 99%

“…Especially the timberconcrete composite (TCC) section has gained importance as a new structural element and as a strengthening technique in the past years [4], as it strengthens the "out of plane" and "inplane" behavior of the timber floor simultaneously. Instead of the concrete part of the TCC section, additional timber elements in the form of cross-laminated timber are often used, which presents a dry technique for forming composite cross sections and is therefore preferred for timber floors of historical or cultural interest ( [2,3,5,6]). Other strengthening techniques involve the use of additional tensile or bending elements connected to the existing timber joists.…”

Section: Introductionmentioning

confidence: 99%

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Timber Floors and Strengthening Techniques (Illustrated with a Numerical Example)

2019

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The trend of renewing old masonry buildings and provision of new housing, public and other areas without using new building blocks is becoming increasingly important to ensure the conformity of the renovated buildings with the current technical regulations. One compliance aspect is the load-bearing function, which to a large degree depends on the floor structures. As old masonry buildings often have timber floors, the purpose of this article is to provide insight into the field of timber floor strengthening. Thus, the evolution of floor structures is briefly presented, and common types of timber floors are provided. Furthermore, the weight of different timber floor fillings is studied in relation to the prescribed imposed loads. Measures for strengthening old timber floors are introduced separately in view of vertical and horizontal strengthening. Additionally, a classic timber floor and a timber-concrete composite floor are analyzed regarding current building standards in the European Union, the Eurocodes.

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Section: Timber-concrete Composite Floorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Timber Floors and Strengthening Techniques (Illustrated with a Numerical Example)

2019

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“…This decision is supported by field observations. Also, the use of perfect hinges simplifies the calculations and overestimates the bending moment and deflections, resulting in a conservative analysis [24].…”

Section: Structural Fem-based Modelmentioning

confidence: 99%

Implementation of Scan-to-BIM and FEM for the Documentation and Analysis of Heritage Timber Roof Structures

Bassier

Hadjidemetriou

Vergauwen

et al. 2016

Lecture Notes in Computer Science

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Abstract. Current heritage analysis applications and documentation techniques for timber roof structures rely on manual measurements to provide the spatial data. Major simplifications are made to document these structures efficiently. However, these simplified geometric models provide less reliable results. Therefore, the need exists for more realistic models. Additionally, the exchangeability of information between varying parties is paramount. Hence, the construction elements should be defined in a Building Information Model (BIM). This allows users to reuse the model, allowing the distribution of information throughout the project. The goal of our research is to create a realistic BIM model of a complex heritage roof structure employing dense point clouds. The comparison of our complex geometric model to a traditional wire-frame model proves that our approach provides more reliable results in terms of geometry and structural behaviour. Our work covers the acquisition, the modelling and the structural analysis of timber roof structures.

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“…The horizontal structures of most of these historic buildings are made of wood, a noble material although sensitive to the maintenance conditions of the building, and subjected to working stresses close to their acceptable limitations. The old wooden structures often require reinforcement structures, because they present structural damage and are in need of conservation, due to humidity, xylophages, and excessive deformability under excessive loads [ 8 , 9 , 10 , 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Behavior of a Composite Lightweight Slab, Consisting of a Laminated Wooden Joist and Ecological Mortar

et al. 2020

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The investigation reported in this paper is an evaluation of the mechanical behavior of full-scale ecological mortar slabs manufactured with a mixture of expanded clay and recycled concrete aggregates. The composite mortars form a compressive layer over laminated wooden joists to form a single construction unit. To do so, full-scale flexural tests are conducted of the composite laminated wood-ecological mortar slabs with different types of mortar designs: reference mortar (MR), lightweight mortar dosed with recycled concrete aggregates (MLC), and lightweight mortar dosed with recycled mixed aggregates (MLM). The test results showed that the mortar forming the compression layer and the laminated wooden joists worked in unison and withstood a higher maximum failure load under flexion than the failure load of the wooden joists in isolation. Moreover, the laboratory test results were compared with the simulated values of the theoretical model, generated in accordance with the technical specifications for structural calculations contained in the Spanish building code, and with the results calculated by a computer software package. From the analysis of the results of the calculation methods and the full-scale laboratory test results, it was concluded that the safety margin yielded by the calculations validated the use of those methods on this type of composite slab. In this way, a strong mixed wood–mortar slab was designed, contributing little dead-load to the building structure and its manufacture with recycled aggregate, also contributes to the circular economy of construction materials.

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Repair and Strengthening of Traditional Timber Roof and Floor Structures

Cited by 16 publications

References 12 publications

Timber Floors and Strengthening Techniques (Illustrated with a Numerical Example)

Timber Floors and Strengthening Techniques (Illustrated with a Numerical Example)

Implementation of Scan-to-BIM and FEM for the Documentation and Analysis of Heritage Timber Roof Structures

Mechanical Behavior of a Composite Lightweight Slab, Consisting of a Laminated Wooden Joist and Ecological Mortar

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