Dynamic evaluation of a nine-storey timber-concrete hybrid building during construction

Larsson, Carl; Abdeljaber, Osama; Dorn, Michaël

doi:10.1016/j.engstruct.2023.116344

Cited by 6 publications

(1 citation statement)

References 21 publications

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“…Larsson et al [60] analysed a 9-storey CLT building during the 13-month construction, performing AVT in seven different construction phases. They observed an increase in natural frequencies after installing non-structural elements (such as a façade and plasterboards).…”

Section: Modal Testing and Model Updatingmentioning

confidence: 99%

Modelling of Multi-Storey Cross-Laminated Timber Buildings for Vibration Serviceability

Kurent,

Friedman,

Brank

2024

Buildings

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In this study, the vibration serviceability of multi-storey timber buildings is addressed. The core of this study pertains to the preparation of a comprehensive finite element model to predict modal properties for an accurate vibration serviceability checking. To that end, findings obtained from studying three multi-storey timber buildings are summarized and discussed. Two of the buildings (of seven and eight storeys) consist entirely of cross-laminated timber (CLT), while the third is a five-storey hybrid CLT-concrete building. Thanks to the detailed finite element models and modal testing results, one has the capability to conduct sensitivity analyses, classical and Bayesian model updating, and uncertainty quantifications. With these methodologies, influential modelling parameters as well as the sources of modelling error were identified. This allowed for conclusions to be drawn about the in-plane shear stiffness of the constructed walls (whose higher value causes the natural frequencies to increase by up to 25%), the soil deformability (which may cause the natural frequencies to drop by up to 20%), and the perpendicular-to-the-grain deformation of floor slabs (which may lead to an overestimation of a fundamental frequency by up to 8%).

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Section: Modal Testing and Model Updatingmentioning

confidence: 99%

Modelling of Multi-Storey Cross-Laminated Timber Buildings for Vibration Serviceability

Kurent,

Friedman,

Brank

2024

Buildings

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One-Year Dynamic Monitoring of an Eight Story CLT Building

Aloisio,

Pasca,

Kurent

et al. 2024

Lecture Notes in Civil Engineering

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Evaluation of vibration properties of an 18-story mass timber–concrete hybrid building by on-site vibration tests

Miyazu,

Loss

2024

J Civil Struct Health Monit

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Timber–concrete hybrid structural systems are a practical option to provide tall mass timber buildings with a lateral load-resisting system. This paper discusses the dynamic behavior of an 18-story timber–concrete hybrid building based on the vibration properties evaluated by on-site vibration tests. First, microtremor measurements and human-powered excitation tests were carried out and the obtained vibration data were analyzed using a stochastic subspace identification method to derive natural frequencies, damping ratios, and mode shapes. Then, a finite-element (FE) model was developed based on detailed structural design information, and its eigenvalues and eigenvectors were compared with the test results. The vibration test results showed various mode shapes, including in-plane deformation of the floor diaphragm composed of cross-laminated timber (CLT) panels. The damping ratios in all the modes were scattered between 1 and 3%, and no frequency dependency was observed. The modal properties of the FE model agreed well with the test results by considering the additional stiffness of non-structural components. In order to simulate the in-plane deformation of the CLT floor diaphragm, detailed modeling of the connection between each CLT floor panel and the connection between CLT floor panels and concrete cores is recommended. The findings provide practitioners with an insight into dynamic properties and FE modeling methods of tall timber–concrete hybrid buildings.

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Dynamic evaluation of a nine-storey timber-concrete hybrid building during construction

Cited by 6 publications

References 21 publications

Modelling of Multi-Storey Cross-Laminated Timber Buildings for Vibration Serviceability

Modelling of Multi-Storey Cross-Laminated Timber Buildings for Vibration Serviceability

One-Year Dynamic Monitoring of an Eight Story CLT Building

Evaluation of vibration properties of an 18-story mass timber–concrete hybrid building by on-site vibration tests

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