Performance-Based Wind Engineering: Towards a general procedure

Ciampoli, Marcello; Petrini, Francesco; Augusti, Giuliano

doi:10.1016/j.strusafe.2011.07.001

Cited by 170 publications

(52 citation statements)

References 31 publications

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“…PBWE examines the adequacy of a structure for different "Hazard Levels" via the aid of "Decision Variables" and "Performance Objectives". (Ciampoli, et al, 2011).…”

Section: Performance Based Wind Engineering Frameworkmentioning

confidence: 99%

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Climate change and extreme wind effects on transmission towers

Manis¹,

Bloodworth²

2017

Proceedings of the Institution of Civil Engineers - Structures

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Climate change poses a major threat to electricity power infrastructure due to expected increase in magnitude and frequency of extreme storm events. This paper uses a methodology for assessment of the vulnerability of UK transmission tower infrastructure to such events, within a framework of performance based engineering.The challenge of estimating future storm magnitudes is addressed by applying a Change Factor Methodology to present day wind speeds using information provided by 2009 UK Climate Change Projections. A Weibull distribution is employed to obtain wind speeds for storm events at different recurrence intervals. Wind loading on the structure and cables is then determined using Eurocodes, and the structure analysed by pseudo-static finite element analysis, considering material and geometrical nonlinearity as well as linear and nonlinear buckling effects.The outcome of the research is that despite a significant projected increase in wind velocities due to climate change, the typical tower analysed in the study continues to perform satisfactorily at all hazard levels. If this performance can be demonstrated more generally across the UK transmission tower infrastructure network, then it is likely that the cause can be traced back to the high factor of safety applied in the original design of the towers.

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“…PBWE examines the adequacy of a structure for different "Hazard Levels" via the aid of "Decision Variables" and "Performance Objectives". (Ciampoli, et al, 2011).…”

Section: Performance Based Wind Engineering Frameworkmentioning

confidence: 99%

“…Decision Variables (DV) are specific measures of the consequence of structural failure from the point of view of structure owners, users or wider society (Ciampoli, et al, 2011). Those applicable to electricity transmission towers are judged as follows:…”

Section: Performance Based Wind Engineering Frameworkmentioning

confidence: 99%

Climate change and extreme wind effects on transmission towers

Manis¹,

Bloodworth²

2017

Proceedings of the Institution of Civil Engineers - Structures

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“…The use of performance-based design (PBD) is recognized in the engineering community as the most rational means of assessing and reducing the risks of engineered buildings subject to natural disasters (Ciampoli et al 2011). PBD requires the designers to go beyond code prescriptions and accurately predict how a structure will respond to its environment, often during extreme events.…”

Section: Introductionmentioning

confidence: 99%

A vulnerability assessment tool for residential structures and extreme wind events

Smith¹,

Roueche²,

Thompson³

et al. 2015

Proceedings of the Second International Conference on Performance-Based and Life-Cycle Structural Engineering (PLSE 2015)

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Studies of hurricane damage to residential buildings confirm that the risk of wind and/or water damage related losses can be mitigated via retrofit solutions. However, adoption of appropriate retrofits by homeowners has been limited despite its obvious benefits. For several reasons, including high cost of retrofitting, the practical difficulty of implementing upgrades, and other homeowner priorities, the level of structural retrofits remain low. This paper proposes a performance-based design approach to retrofitting, targeted for residential homeowners (and their construction team) to advise on incremental retrofits that ultimately result in desired performance targets for windresistant houses. To specifically engage the homeowner, a user-friendly smartphone application is developed that evaluates the wind resistance and vulnerability of existing homes. The app provides each homeowner an individualized vulnerability assessment, while engaging and educating them on the effects of structural systems and building characteristics on damage and on the options for retrofits and costs associated with the work. The vulnerability assessment is determined using a database of fragility curves, developed originally for the FEMA's HAZUS-MH program, and adapted for this use. The analysis yields the top three recommended retrofits for each house as-is, and its expected hurricane-induced economic losses compared against the predicted loss if all the retrofits were conducted. Beta trials of the mobile app will be conducted in at-risk coastal communities in Florida, USA. The authors suggest that direct engagement of homeowners in identifying wind mitigation techniques and solutions may yield more positive outcomes than traditional communication approach and it may eventually increase the number of building retrofits.

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“…Probabilistic performance-based methods have been extensively developed in the field of earthquake engineering (Cornell and Krawinkler, 2000;Porter, 2003) and have already been used to develop modern seismic design codes (ATC, 1997(ATC, , 2005. Similar methodologies, which are based on a PBE approach, have been advancing also in other civil engineering subfields including wind engineering, fire engineering, and blast engineering (Hamburger and Whittaker, 2003;Augusti and Ciampoli, 2006;Li and Ellingwood, 2006;Rini and Lamont, 2008;Ciampoli et al, 2011). Recently, a performance-based hurricane engineering (PBHE) framework has been proposed to extend PBE to the analysis and design of structures subject to hurricane hazard (Barbato et al, 2013).…”

Section: Introductionmentioning

confidence: 99%