Performance-Based Earthquake Engineering in the U.S.: A Case Study for Tall Buildings

Moehle, Jack P.

doi:10.1007/978-94-017-8875-5_26

Cited by 51 publications

(67 citation statements)

References 3 publications

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“…A PBEE method was selected for this framework as it accounts for specific structural and non-structural characteristics of a building and allows design outcomes to be communicated based on simple performance metrics (e.g. environmental indicators in this case) (Moehle and Deierlein 2004). The PBEE method used here measures building performance in terms of potential environmental impacts, using four typical PBEE main steps (illustrated in Fig.…”

Section: Proposed Frameworkmentioning

confidence: 99%

Incorporating potential environmental impacts in building seismic design decisions

Gonzalez

Stephens

Toma

et al. 2023

Bull Earthquake Eng

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Seismic losses due to earthquakes have been shown to have significant economic, social and environmental consequences. Over recent years, research to predict potential economic and social impact due to seismic risk has been increasing. Recognizing that the traditional philosophy of life safety design can lead to extensive damage and demolition which has a large environmental cost, incorporating environmental impacts associated with the expected seismic damage over a building’s life is a key step as the building industry moves towards both sustainable and seismically resilient design. This paper introduces a framework that uses environmental indicators quantifying losses from seismic response that can then be used to advocate for a change in seismic performance objectives. First, existing literature and previously developed approaches for quantifying potential environmental impact due to seismic damage are summarized. Next, performance based earthquake engineering concepts are used to demonstrate a probabilistic approach to quantify potential environmental impacts using a range of environmental and resource use indicators over the life span of a case study building. In addition, a case study is presented to compare different environmental indicators between a Code Minimum building and the same building redesigned for a higher seismic performance. The majority of the composition of the environmental indicator values are from the inclusion of the non-repairable scenario, and from the repair activities, the majority of the impacts are from damage to drift sensitive components including curtains walls, partitions and elevators. For the Code Minimum building the non-repairable scenario contributes to between 8 to 11% the total seismic cost. For the Stronger Stiffer building, the non-repairable scenario contributes around 3% of the initial impact. Neglecting non-repairable scenarios does significantly reduce the potential environmental impacts when analyzing buildings designed for current code minimum structural standards.

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Section: Proposed Frameworkmentioning

confidence: 99%

Incorporating potential environmental impacts in building seismic design decisions

Gonzalez

Stephens

Toma

et al. 2023

Bull Earthquake Eng

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“…Loss estimation is performed in four stages; (i) probabilistic seismic hazard analysis to derive λ(IM); (ii) structural analyses using ground motions consistent with the seismic hazard to estimate G⟨EDP|IM⟩; (iii) use of fragility functions to obtain G⟨DM|EDP⟩; and (iv) use of loss distributions, G⟨DV|DM⟩, to predict losses [17]. The PACT software estimated losses using equation ( 4), with the independent variables/inputs being:…”

Section: Loss Assessmentmentioning

confidence: 99%

Investigating the impact of design criteria on the expected seismic losses of multi-storey office buildings

Williamson

John

Sullivan

2023

BNZSEE

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The Ministry of Building, Innovation and Employment is developing advice on how to deliver Low Damage Seismic Design (LDSD) protection for buildings through their Tū Kahika: Building Resilience platform. The draft LDSD advice is considering a design drift limit for multi-storey buildings of 0.5% as part of new damage control limit state design checks. The potential impact of this design criterion on the expected annual loss due to repair costs is investigated for generic reinforced concrete wall case-study office buildings of 4- and 12-storeys in both Wellington and Christchurch. The equivalent static method, in line with NZS 1170.5 and NZS 3101, was used to design the buildings to conventional and draft LDSD specifications, representing current and future state-of-practice designs. The draft LDSD advice aims to limit the expected annual loss of complying buildings to below 0.1% of building replacement cost. This research tested this expectation. Losses were estimated in accordance with FEMA P-58, using building responses from non-linear time history analyses. Although it is found that the new drift limit alone may not limit seismic losses to the target values owing to damage to acceleration-sensitive elements, the results do support the intentions of the draft design advice to significantly reduce the expected seismic losses of complying buildings. The study also highlighted the importance of using an accurate approximation of RC wall stiffness for LDSD, and provides insight into different design strategies that could be followed to effectively limit losses in RC wall buildings as part of LDSD.

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“…The scale factor (SF i ) for the ith pair of ground motion was obtained by minimizing the sum of squared error (SSE i ) between the target design spectrum and the geometric mean spectrum of the pair. [45] The expressions for SSE i and SF i are as follows:…”

Section: Input Excitationmentioning

confidence: 99%

Optimal parameters for tall buildings with a single viscously damped outrigger considering earthquake and wind loads

Malik

Kolay

2023

Structural Design Tall Build

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Tall buildings suffer from low inherent damping and high flexibility. Therefore, a coreoutrigger system is often used to stiffen such buildings. A modified form, known as the damped outrigger system, wherein vertically oriented dampers are installed between outriggers and perimeter columns, has been recently developed to supplement the damping. This paper studies the efficacy of a viscously damped outrigger system through dynamic analysis of a 60-story tall building subjected to nonconcurrent earthquake and wind excitations. Two ground motion sets (100 accelerograms) are used for the former and wind tunnel test data for the latter.Effects of three building parameters, namely, (i) the core-to-column stiffness ratio, (ii) the outrigger location, and (iii) the damper size, on the dynamic characteristics and seismic and wind responses are evaluated. Effects of damper nonlinearity on seismic and wind responses are also investigated considering energy-equivalent nonlinear viscous dampers. Finally, the optimum values of these parameters are determined.For example, the optimum outrigger location is found to be between 0:6H to 0:9H, where H is the height of the building. The results also show that the damped outrigger system significantly outperforms the conventional one for seismic excitation, and it is very effective in reducing the wind-induced floor accelerations, provided the parameters are chosen appropriately.

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Performance-Based Earthquake Engineering in the U.S.: A Case Study for Tall Buildings

Cited by 51 publications

References 3 publications

Incorporating potential environmental impacts in building seismic design decisions

Incorporating potential environmental impacts in building seismic design decisions

Investigating the impact of design criteria on the expected seismic losses of multi-storey office buildings

Optimal parameters for tall buildings with a single viscously damped outrigger considering earthquake and wind loads

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