Seismic performance of RC precast industrial buildings—learning with the past earthquakes

Batalha, Nádia; Rodrigues, Hugo

doi:10.1007/s41062-018-0191-y

Cited by 31 publications

(17 citation statements)

References 35 publications

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“…Recent earthquakes occurred in Southern Europe highlighted a satisfactory behaviour of existing precast concrete industrial frame structures, whether they were originally conceived and designed for seismic strength. However, a poor performance leading to global column collapse of whole industrial facilities or local collapses involving loss of support of poorly connected horizontal elements, whether they were not conceived and designed considering the earthquake load, was observed (Toniolo and Colombo 2012;Bournas et al 2013;Magliulo et al 2014;Belleri et al 2015a;Savoia et al 2017;Batalha et al 2019;Dal Lago 2021). In both conditions, the large drifts attained under the occurred strong earthquakes brought to issues of displacement compatibility with the "non-structural" claddings, often made with heavy precast concrete sandwich panels, leading to failure of their connections and to their collapse, as extensively reported in the above-cited literature.…”

Section: Introductionmentioning

confidence: 99%

Tension-only ideal dissipative bracing for the seismic retrofit of precast industrial buildings

Lago

Naveed

Tornaghi

2021

Bull Earthquake Eng

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New precast frame industrial structures are seismically designed according to reliable modern criteria. However, most of the existing built stock hosting many workers and both regular and strategic industrial activities was designed and detailed neglecting the earthquake load or according to outdated seismic design criteria and regulations. Its seismic retrofit is a main challenge for the Engineering Community and a critical objective for institutional and private bodies. Among the envisaged solutions, the introduction of dissipative braces appears to be promising, although mostly inapplicable for these buildings, due to the brace lengths required by their typical large dimensions and the related proportioning against buckling. In this paper, an innovative seismic retrofitting technique based on monolateral dissipative bracing is investigated. The device proposed in this paper, yet in phase of preliminary design and testing, dissipates energy through friction in tension only while freely deforming in compression, which makes the issue related to compressive buckling irrelevant. A numerical analysis is carried out to investigate the efficiency of the proposed device in seismic retrofitting of precast industrial frame buildings with the aim to explore its feasibility and to better orient the definition of the slip threshold load range and the future development of the physical device. The simplified Capacity Spectrum Method (CSM) is employed for the global framing of the structural behaviour of the highly nonlinear retrofitted structures under seismic actions. A numerical tool is set to automatically apply the CSM based on the definition of few main parameters governing the seismic response of precast frame structures. The efficacy of the CSM is critically analysed through the comparison with the results of a set of nonlinear dynamic analyses. A smart simplified design process aimed at framing the most efficient threshold slip/yield load of the device given an existing structural configuration is presented with the application of the CSM through the identification of the most efficient performance indicator related to either displacement, shear force, equivalent dissipation of energy or a combination of them.

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Section: Introductionmentioning

confidence: 99%

Tension-only ideal dissipative bracing for the seismic retrofit of precast industrial buildings

Lago

Naveed

Tornaghi

2021

Bull Earthquake Eng

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“…Frame structures properly designed and detailed for seismic actions performed satisfactorily (Biondini and Toniolo, 2009), while many cladding panels collapsed after failure of their connections (Toniolo and Colombo, 2012;Belleri et al, 2015a). Surveys from areas where the frame structures were not conceived for seismic strength (Belleri et al, 2015b(Belleri et al, , 2017, and did not perform satisfactorily, also reported extensive failures of cladding panels and their connections (Bournas et al, 2013;Magliulo et al, 2014;Savoia et al, 2017;Batalha et al, 2019). The SAFECLADDING project was funded by the European Commission to tackle this issue.…”

Section: Introductionmentioning

confidence: 99%

Multi-Stripe Seismic Assessment of Precast Industrial Buildings With Cladding Panels

Gajera

Lago

Capacci

et al. 2021

Front. Built Environ.

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Following the empirical observation of widespread collapses of cladding panel connections of precast industrial buildings under recent seismic events, new design solutions have been developed in the framework of the European project SAFECLADDING, including isostatic systems effectively decoupling the seismic response of frame structure and cladding panels. The present paper is aimed at evaluating the seismic response and vulnerability of precast frame structures employing pendulum, cantilever, and rocking cladding connection systems. Within the framework of the research project RINTC–Implicit seismic risk of code-conforming structures funded by the Italian Civil Protection Department within the ReLUIS program, the seismic performance of a typical precast industrial building has been assessed with a probabilistic approach based on the results of static and multi-stripe dynamic non-linear analyses. The seismic vulnerability assessment of each structural system has been carried out with reference to life safety and damage limit states considering three sites of increasing seismic hazard in Italy. The effect of distributed panel mass modeling vs. more common lumped mass modeling has been analyzed and critically commented based on the results of demand over capacity (D/C) ratios. Moreover, biaxial seismic D/C ratios have been evaluated for realistic strong hinge connections for cladding panels.

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Section: Introductionmentioning

confidence: 99%

“…In Europe, industrial precast reinforced concrete (PRC) buildings represent a significant part of the industrial building stock [1,2]. Recent earthquakes have exposed the main vulnerabilities of PRC buildings, highlighting both structural and nonstructural damage, mostly related to the deficient transfer of horizontal loads at the connections between elements [1]. The inadequate design of these connections may have caused the cladding panels (with weights of up to 10 tons) to collapse, representing a potential risk for humans, even during evacuation procedures [3], as well as significant economic losses [4].…”

Section: Introductionmentioning

confidence: 99%

“…In particular, Bournas et al [9] reported that approximately 75% of industrial PRC buildings designed without seismic provisions exhibited damage and detachment of the exterior cladding panels, as shown in Figure 1a. The current design practice for industrial PRC buildings is based on bare-frame models and the cladding-panel contribution is generally neglected; therefore, no interaction between the panels and the structure is considered [1]. Furthermore, it was observed in a recent survey carried out on Portuguese PRC buildings [11] that cladding panels, both in old and recent buildings, are generally not considered in the design, not even with simplified procedures, ignoring the interaction with the frame and it is considered that they do not contribute to seismic behavior.…”

Section: Introductionmentioning

confidence: 99%

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Assessment of the Seismic Behavior of a Precast Reinforced Concrete Industrial Building with the Presence of Horizontal Cladding Panels

et al. 2021

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The latest earthquakes in Europe exposed some critical problems in the connections of cladding panels in industrial precast reinforced concrete (PRC) structures. These connections did not perform as desired, causing the panels to fall, leading to significant nonstructural damage that resulted in the loss of human life and significant socio-economic impacts due to the interruption of business. Furthermore, in addition to the behavior of the cladding system itself, it is still not clear to what extent it can influence the overall seismic performance of the main structure. Making use of a simplified macroelement, the present study assesses the seismic performance of commonly employed cladding-to-structure connections, as well as the interaction of cladding panels with industrial PRC buildings. The analyses were carried out considering a PRC building representative of a Portuguese industrial park, studied with and without cladding panels. The seismic behavior of the structure was assessed considering both nonlinear static and dynamic procedures.

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Seismic performance of RC precast industrial buildings—learning with the past earthquakes

Cited by 31 publications

References 35 publications

Tension-only ideal dissipative bracing for the seismic retrofit of precast industrial buildings

Tension-only ideal dissipative bracing for the seismic retrofit of precast industrial buildings

Multi-Stripe Seismic Assessment of Precast Industrial Buildings With Cladding Panels

Assessment of the Seismic Behavior of a Precast Reinforced Concrete Industrial Building with the Presence of Horizontal Cladding Panels

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