Design of diagrid exoskeletons for the retrofit of existing RC buildings

Labò, Simone; Passoni, Chiara; Marini, Alessandra; Belleri, Andrea

doi:10.1016/j.engstruct.2020.110899

Cited by 35 publications

(19 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the other hand, some research projects implementing CLT panels for the retrofit of existing buildings were developed [18][19][20], but without solving in a comprehensive manner all the correlated structural, energy, and technological issues and without addressing LCT principles. Finally, exoskeleton techniques for the holistic renovation of existing buildings considering different technologies have recently been proposed [21][22][23][24][25] but these are only at a conceptual level, with the sole exception of the first pioneering intervention developed by the authors of [26].…”

Section: Adesa System: An Anti-seismic Eco-efficient Wooden Shellmentioning

confidence: 99%

Integrated Deep Renovation of Existing Buildings with Prefabricated Shell Exoskeleton

et al. 2021

Self Cite

View full text Add to dashboard Cite

The European goal to reach carbon neutrality in 2050 has further put the focus on the construction sector, which is responsible for great impacts on the environment, and new sustainable solutions to renovate the existing building stock are currently under development. In this paper, the AdESA (Adeguamento Energetico Sismico ed Architettonico, in Italian) system, a holistic retrofit technique for the integrated renovation of the existing buildings, is presented. The system was developed by a consortium of enterprises and universities and was applied to a pilot building. The system consists of a dry, modular and flexible shell exoskeleton technique that implements different layers depending on the building retrofit needs (cross-laminated timber (CLT) panels for the structural retrofit, thermal insulation panels for the energy efficiency amelioration, and claddings for the architectural restyling). In order to foster actual sustainability, the solution contextually targets eco-efficiency, safety and resilience. To this end, the system not only couples the structural and energy interventions to reduce the operating costs, but it is also conceived in compliance with life cycle thinking (LCT) principles to reduce impacts throughout the remaining building service life (from retrofit time to the end of its life). The system is designed to be easily mountable and demountable to allow for the reuse/recycling of its components at the end of life by adopting macro-prefabricated dry components and standardized connections, to reduce damage caused by earthquakes by reducing the allowed inter-story drift, and by amassing the possible damage into sacrificial replaceable elements. The paper describes the AdESA system from a multidisciplinary perspective and its effective application for the deep renovation of an existing gymnasium hall.

show abstract

Section: Adesa System: An Anti-seismic Eco-efficient Wooden Shellmentioning

confidence: 99%

Integrated Deep Renovation of Existing Buildings with Prefabricated Shell Exoskeleton

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…This aspect increases the sustainability of the intervention in terms of life cycle assessment, providing easier management of the construction at its end of life. Seismic performance and design procedures for exoskeleton structures have been studied by Reggio et al [42], Labò et al [43], and Passoni et al [44].…”

Section: Integrated Retrofitting Solutions For Existing Buildingsmentioning

confidence: 99%

Seismic and Energy Integrated Retrofitting of Existing Buildings with an Innovative ICF-Based System: Design Principles and Case Studies

et al. 2021

View full text Add to dashboard Cite

This work proposes an innovative integrated retrofitting system aiming to improve both the seismic and energy performance of existing reinforced concrete and masonry buildings. The system is based on engineered insulating concrete form panels, installed on the outside of existing buildings as a shell exoskeleton. A key major advantage of the proposed system is that it addresses the contemporary improvement of seismic and energy performances of existing buildings in a single installation stage, operating exclusively from outside of the building. The insulating formworks are ad hoc prefabricated in a factory on the base of the specific geometry of the existing buildings so as to greatly maximize the ratio between overall retrofitting benefits and costs and at the same time to simplify the installation procedures. The objectives of the presented research are, on one hand, to highlight the major structural issues that the system aims to address, and on the other hand to illustrate the main characteristics and combined benefits of the proposed retrofitting system. From a structural point of view, the proposed system is conceived to behave as a non-dissipative structure with regard to seismic actions, and the lateral strength and stiffness of the structural elements are designed accordingly. An analytical design approach is proposed and validated using the available data from an experimental test performed on a full-scale simple building. Moreover, numerical modeling strategies for the proposed system are illustrated for two complex case study buildings. The results of the analyses show a considerable increase in lateral stiffness of the retrofitted buildings that, considering the non-dissipative behavior of the elements, leads to a relevant reduction of seismic deformation demand on existing structural elements.

show abstract

“…This solution has the advantage of using inorganic mortars and the possibility of including a thermal insultation system able to improve energy efficiency. In [13], a design method for the seismic upgrading of RC buildings by using diagrid exoskeletons, is provided. Diagrids are intended as systems in which an inclined structural grid is used to withstand both vertical and horizontal loads.…”

Section: Introductionmentioning

confidence: 99%

The High-Performance Dissipating Frame (HPDF) System for the Seismic Strengthening of RC Existing Buildings

et al. 2021

View full text Add to dashboard Cite

In Italy as well as in other earthquake-prone countries, the large number of existing buildings requiring seismic retrofitting calls for sustainable solutions able to reduce both costs and downtime. To this purpose, in this paper, the High-Performance Dissipating Frame system (HPDF), a new strengthening solution for the seismic rehabilitation of existing buildings, is presented. HPDF is based on external precast reinforced concrete (RC) frames rigidly connected to the existing structures and equipped with shear damper devices in order to provide high dissipation capacity. The proposed solution permits: (i) to increase sustainability through works made up from the outside without removing/demolishing infills/other non-structural components, (ii) rapid execution by adopting precast resisting members mutually restrained with steel connections, and (iii) effectiveness due to shear damper devices able to dissipate a large amount of shaking energy. In the paper, a displacement-based design procedure is proposed and applied to a numerical example.

show abstract

Design of diagrid exoskeletons for the retrofit of existing RC buildings

Cited by 35 publications

References 19 publications

Integrated Deep Renovation of Existing Buildings with Prefabricated Shell Exoskeleton

Integrated Deep Renovation of Existing Buildings with Prefabricated Shell Exoskeleton

Seismic and Energy Integrated Retrofitting of Existing Buildings with an Innovative ICF-Based System: Design Principles and Case Studies

The High-Performance Dissipating Frame (HPDF) System for the Seismic Strengthening of RC Existing Buildings

Contact Info

Product

Resources

About