Dynamic identification and model updating of an eight-storey CLT building
TL;DR: The identified storey masses are indeed realistic and confirm the negligible role of the connections in the low-amplitude dynamic response, and the nonlinear effects of connections over the building response to higher displacements are discussed, providing simplified and practice-oriented correlations for the first natural frequency estimation.
About: This article is published in Engineering Structures.The article was published on 2020-06-15. It has received 50 citations till now.
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TL;DR: In this article, the elastic modulus assessment of concrete bridges is derived from an Ordinary Least Square procedure with a Bayesian uncertainty estimation, obtained by approximating the known term of the governing equations due to the travelling force with a square wave signal.
32 citations
TL;DR: In this paper, the fragility functions and behavior factors of cross-laminated timber (CLT) structures were assessed and the structures derived from the assembly of single CLT wall panels characterized by diff...
Abstract: The authors assessed the fragility functions and behavior factors of cross-laminated timber (CLT) structures. The structures derive from the assembly of single CLT wall panels characterized by diff...
27 citations
Cites background or methods from "Dynamic identification and model up..."
...The numerical models of the CLT systems derive by assembling a set of nonlinear springs described by the EEGBW hysteresis model (Aloisio et al., 2020b) and calibrated on all the experimental data from cyclic tests performed by Gavric et al. (2015) using a Ordinary Least Squares method (Aloisio et…...
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...As a confirmation of this choice, Aloisio et al. (2020f) performed dynamic identification tests on a platform-type building using the stochastic subspace-based identification method (Aloisio et al., 2020a, 2020c)....
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...In the current article, the authors implemented the model introduced by Aloisio et al. (2020b)....
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...However, nonlinear FE dynamic analysis requires high computational efforts since the convergence of the solution entails a refined mesh discretization and integration time step (Aloisio et al., 2020d; Aloisio et al., 2020e)....
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...For an inelastic single degree of freedom (SDOF) system with the generalized BoucWen model, the equation of motion can be expressed as (Aloisio et al., 2020b) m €x + c _x + fs x, _x, zð Þ= m€xg ð1Þ where m = mass; x = displacement; _x = derivative of x with respect to time; €x = double derivative…...
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TL;DR: In this paper, the authors reported the outcomes of two years of static and dynamic monitoring from 1/1/2018 to 31/12/2019, and correlated the outdoor temperature and relative humidity to both the amplitude of the cracks and the modal parameters.
25 citations
TL;DR: In this paper, the authors examined the dynamic behavior of seven concrete box-girders of the A24 Italian motorway and estimated the values of two equivalent torsional springs, representatives of the actual restraint conditions by maximizing the Modal Assurance Criterion (MAC) between analytical and experimental mode shapes.
24 citations
TL;DR: In this paper, an expression for the estimation of equivalent viscous damping (EVD) for cross-laminated timber (CLT) structural archetypes as a function of ductility is presented.
Abstract: This paper attempts to formulate an expression for the estimation of equivalent viscous damping (EVD) for cross-laminated timber (CLT) structural archetypes as a function of ductility. The ...
24 citations
References
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TL;DR: In this paper, a novel approach of stochastic subspace identification is presented that incorporates the idea of the reference sensors already in the identification step: the row space of future outputs is projected into the rowspace of past reference outputs.
1,236 citations
TL;DR: In this article, the authors provide a state-of-the-art report on some selected topics related to CLT, in particular production and technology, characteristic material properties, design and connections.
Abstract: Cross laminated timber (CLT) has become a well-known engineered timber product of global interest. The orthogonal, laminar structure allows its application as a full-size wall and floor element as well as a linear timber member, able to bear loads in- and out-of-plane. This article provides a state-of-the-art report on some selected topics related to CLT, in particular production and technology, characteristic material properties, design and connections. Making use of general information concerning the product’s development and global market, the state of knowledge is briefly outlined, including the newest findings and related references for background information. In view of ongoing global activities, a significant rise in production volume within the next decade is expected. Prerequisites for the establishment of a solid timber construction system using CLT are (1) standards comprising the product, testing and design, (2) harmonized load-bearing models for calculating CLT properties based on the properties of the base material board, enabling relatively fast use of local timber species and qualities, and (3) the development of CLT adequate connection systems for economic assembling and an increasing degree of utilization regarding the load-bearing potential of CLT elements in the joints. The establishment of a worldwide harmonized package of standards is recommended as this would broaden the fields of application for timber engineering and strengthen CLT in competition with solid-mineral based building materials.
427 citations
15 Apr 2015
TL;DR: In this article, the authors provide a state-of-the-art report on some selected topics related to CLT, in particular production and technology, characteristic material properties, design and connections.
Abstract: Cross laminated timber (CLT) has become a well-known engineered timber product of global interest. The orthogonal, laminar structure allows its application as a full-size wall and floor element as well as a linear timber member, able to bear loads in- and out-of-plane. This article provides a state-of-the-art report on some selected topics related to CLT, in particular production and technology, characteristic material properties, design and connections. Making use of general information concerning the product’s development and global market, the state of knowledge is briefly outlined, including the newest findings and related references for background information. In view of ongoing global activities, a significant rise in production volume within the next decade is expected. Prerequisites for the establishment of a solid timber construction system using CLT are (1) standards comprising the product, testing and design, (2) harmonized load-bearing models for calculating CLT properties based on the properties of the base material board, enabling relatively fast use of local timber species and qualities, and (3) the development of CLT adequate connection systems for economic assembling and an increasing degree of utilization regarding the load-bearing potential of CLT elements in the joints. The establishment of a worldwide harmonized package of standards is recommended as this would broaden the fields of application for timber engineering and strengthen CLT in competition with solid-mineral based building materials.
398 citations