Multi-Hazard Design of Facades: Important Considerations of Wind and Seismic Interaction with Blast Requirements

McKay, Aldo; Jones, Cliff A.; Conrath, Ed; Davis, Carrie E.

doi:10.1061/9780784479117.002

Cited by 4 publications

(2 citation statements)

References 1 publication

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“…Furthermore, several research projects have been conducted to account for various cases of double skin facade (DSF) buildings in which the lateral loads that have been assigned to and are resisted by the primary building structure, while the exterior skin is employed as a curtain wall. Mckay et al [11] studied the importance of designing facade envelope components against the seismic. Furthermore, Pipitone et al [12] employed several layouts of DSF with mass dampers to reduce the seismic vibration in structures subjected to the variety of earthquake excitations.…”

Section: Introductionmentioning

confidence: 99%

Seismic performance of double skin semi-base-isolated structures

2020

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Base isolation technology is a popular and powerful isolation technology. This technique can greatly reduce the seismic response of the structure, so as to reduce the damage to the structure. Base isolation method decouples the superstructure from the base by installing a flexible layer under each column to reduce dynamic response in the earthquake and elongate the time period of structures due to its inherent flexibility. However, the long time period causes large displacement. In addition, base isolation devices are highly vulnerable due to uplift forces produced by lateral force resisting systems (LFRS). In this study, an adjustable structure with a new configuration, namely double skin semi-base-isolated (SBI) structure is presented to solve the above problems. The LFRS is omitted in the proposed SBI structure and the time period and displacement are reduced compared to the conventional base-isolated structure. The forcedeformation behavior of an isolator is modeled as bi-linear hysteretic behavior which can be effectively used to model all isolation system in practice. This study investigates the seismic performance of 10-story double skin SBI reinforced concrete (RC) structure under far-fault earthquake ground motion by numerical method. Results demonstrate that the SBI system is significantly adjustable with the use of RC coupling beams between the inner core and outer frames. By increasing or reducing the number of connected floors in the SBI system, dynamic behaviors of the SBI system can be changed. The adjusted structure can be created by adding and removing RC coupling beams at every arbitrary floor level.

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Section: Introductionmentioning

confidence: 99%

Seismic performance of double skin semi-base-isolated structures

2020

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“…Numerical modelling concepts and validations have been proposed [5 -7]. Multi-hazard design concepts and simplified analytical methods have been proposed [8,9] for glazing façades under explosive events. The application of cementitious crash materials for the implementation of innovative connectors in cable-supported façades under impulsive loads has been assessed [10,11], while the feasibility of passive control devices for cable-net glazing systems under blast has been explored by means of FE and analytical models [12 -14].…”

Section: Introductionmentioning

confidence: 99%

Passive Control Systems for the Blast Enhancement of Glazing Curtain Walls Under Explosive Loads

Bedon¹,

Amadio²

2017

TOCIEJ

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Glass curtain walls are used in modern buildings as envelopes for wide surfaces due to a multitude of aspects. In glass curtain walls, tensile brittle panels are connected -through mechanical or adhesive joints -with steel frameworks or aluminum bracing systems, and due to the interaction of several structural components, the behaviour of the so assembled system is complex to predict, especially under exceptional loading conditions such as explosive events. In the paper, glazing curtain walls are investigated by means of Finite-Element (FE) numerical simulations, under the effect of air blast pressures of variable intensity. Their typical dynamic behaviour and criticalities under high-strain impact loads are first analyzed. By means of extended nonlinear dynamic FE parametric studies, innovative devices are applied to traditional curtain walls, at their support points, in order to improve their expected dynamic response. Two possible solutions, namely consisting of viscoelastic (VE) or elasto-plastic (PL) dampers, are proposed as passive control systems for the mitigation of maximum effects in the façade components deriving from the incoming blast pressures. As shown, although characterized by specific intrinsic mechanical behaviours, either VE or PL dampers can offer beneficial structural effects. In the first case, major advantages for the façade components derive from the additional flexibility and damping capacities of VE devices. In the latter case, PL dampers introduce additional plastic energy dissipation in the traditional curtain wall assembly, hence allowing preventing severe damage in the glazing components. It is thus expected that the current outcomes could represent a valid background for further experimental validation as well as detailed assessment and optimization of the proposed design concept.

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A multi-criteria decision support framework for designing seismic and thermal resilient facades

Kim,

Luna-Navarro,

Ciurlanti

et al. 2024

Archit. Struct. Constr.

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Facades play a pivotal role in the performance of a building, serving various environmental, structural and operational functions. As climate-induced extreme events become more frequent, developing resilient facades is becoming crucial. Although facades can contribute significantly to the total post-disruption losses, their resilience is not sufficiently addressed in current design approaches. In response to this research gap, this study proposes a multi-criteria decision-making methodology to select optimal facade designs using resilience criteria: resilience loss and economic loss. The framework addresses the complexity of facade design, considering multiple hazards such as earthquakes and heatwaves. For seismic hazard, the facade’s resilience is defined as its ability to mitigate damage. In the case of heat hazard, resilience is assessed based on the ability to keep indoor conditions within a comfortable thermal range. To demonstrate the applicability of the proposed methodology, a case study of an 18-story office building in Izmir (Turkey) is used to compare alternative facade packages. These packages identify the facade design cases, each coupled with a dataset of seismic and thermal fragility curves. Numerical simulations are conducted to derive seismic and thermal resilience curves for each facade package, along with resilience criteria. These criteria are embedded into a practical decision-making process to enable the selection of the optimal design case based on project specifications.

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Multi-Hazard Design of Facades: Important Considerations of Wind and Seismic Interaction with Blast Requirements

Cited by 4 publications

References 1 publication

Seismic performance of double skin semi-base-isolated structures

Seismic performance of double skin semi-base-isolated structures

Passive Control Systems for the Blast Enhancement of Glazing Curtain Walls Under Explosive Loads

A multi-criteria decision support framework for designing seismic and thermal resilient facades

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