Estimation of element‐by‐element demand‐to‐capacity ratios in instrumented SMRF buildings using measured seismic response

Hernández, Eduardo; Roohi, Milad; Rosowsky, David V.

doi:10.1002/eqe.3099

Cited by 18 publications

(9 citation statements)

References 16 publications

(28 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is important because in many structural applications, the unmeasured excitations are more compactly and accurately explained in the frequency domain using power spectral density. ()…”

Section: Linear‐ and Nonlinear‐model‐based State Observermentioning

confidence: 99%

“…This is important because in many structural applications, the unmeasured excitations are more compactly and accurately explained in the frequency domain using power spectral density. 29,51 The LMBO estimate of the displacement response is given by the solution of the following set of ordinary differential equations…”

Section: Linear-and Nonlinear-model-based State Observermentioning

confidence: 99%

“…Recently, Hernandez et al used a model‐based state observer (MBO) to reconstruct the dynamic response of an actual instrumented steel moment resisting frame (SMRF) building. The estimated response was then used to assess the seismic performance of the building and estimate element‐by‐element demand to capacity ratios.…”

Section: Introductionmentioning

confidence: 99%

“…[21][22][23][24][25] The model-data fusion approach operates by combining a mechanics-based linear or nonlinear model of the building and measured vibrations to reconstruct the dynamic response and subsequently use the estimated response to estimate damage sensitive features such as interstory drift and internal forces. [26][27][28][29][30][31] The methodology proposed in this paper belongs to the latter category.…”

mentioning

confidence: 99%

See 3 more Smart Citations

Nonlinear seismic response reconstruction and performance assessment of instrumented wood‐frame buildings—Validation using NEESWood Capstone full‐scale tests

Roohi

Hernández

Rosowsky

2019

Struct Control Health Monit

Self Cite

View full text Add to dashboard Cite

Summary The authors present a methodology to reconstruct nonlinear seismic response and assess seismic performance of instrumented wood‐frame buildings subjected to earthquakes. The paper proposes the use of a nonlinear model‐based state observer that combines global acceleration measurements and a nonlinear structural model of the building to estimate the complete dynamic response including displacements, velocities, accelerations at all degrees of freedom of the model, and internal forces in all structural members. From the estimated dynamic response, engineering demand parameters are obtained and compared with performance‐based acceptance criteria to determine post‐earthquake building occupancy classification. The methodology is successfully verified and validated using seismic response measurements and photographic records from the 2009 NEESWood Capstone building full‐scale tests conducted at the E‐Defense facility in Japan.

show abstract

“…This is important because in many structural applications, the unmeasured excitations are more compactly and accurately explained in the frequency domain using power spectral density. ()…”

Section: Linear‐ and Nonlinear‐model‐based State Observermentioning

confidence: 99%

Section: Linear-and Nonlinear-model-based State Observermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Nonlinear seismic response reconstruction and performance assessment of instrumented wood‐frame buildings—Validation using NEESWood Capstone full‐scale tests

Roohi

Hernández

Rosowsky

2019

Struct Control Health Monit

Self Cite

View full text Add to dashboard Cite

show abstract

“…Most of the recent studies have used simplified, one-dimensional shear frames or symmetric 3D buildings [18,19], neglecting the geometry and irregularity of structures, as well as bidirectional seismic loading. Earthquake loads can be applied in two directions that may cause simultaneous translational and torsional vibrations in buildings with considerable irregularity [20,21].…”

Section: Introductionmentioning

confidence: 99%

Swarm-based Parallel Control of Adjacent Irregular Buildings Considering Soil–structure Interaction

Azimi

Yeznabad

2020

JSAN

View full text Add to dashboard Cite

Seismic behavior of tall buildings depends upon the dynamic characteristics of the structure, as well as the base soil properties. To consider these factors, the equations of motion for a multi-story 3D building are developed to include irregularity and soil–structure interaction (SSI). Inspired by swarm intelligence in nature, a new control method, known as swarm-based parallel control (SPC), is proposed in this study to improve the seismic performance and minimize the pounding hazards, by sharing response data among the adjacent buildings at each floor level, using a wireless-sensors network (WSN). The response of individual buildings is investigated under historic earthquake loads, and the efficiencies of each different control method are compared. To verify the effectiveness of the proposed method, the numerical example of a 15-story, 3D building is modeled, and the responses are mitigated, using semi-actively controlled magnetorheological (MR) dampers employing the proposed control algorithm and fuzzy logic control (FLC), as well as the passive-on/off methods. The main discussion of this paper is the efficiency of the proposed SPC over the independent FLC during an event where one building is damaged or uncontrolled, and an active control based upon the linear quadratic regulator (LQR) is considered for the purpose of having a benchmark ideal result. Results indicate that in case of failure in the control system, as well as the damage in the structural elements, the proposed method can sense the damage in the building, and update the control forces in the other adjacent buildings, using the modified FLC, so as to avoid pounding by minimizing the responses.

show abstract

Optimal multi‐type sensor placement for monitoring high‐rise buildings under bidirectional long‐period ground motions

Zhao

2020

Struct Control Health Monit

View full text Add to dashboard Cite

Summary Towards a complete and accurate seismic assessment of a super high‐rise building under bidirectional long‐period ground motions, this study proposes an optimal multi‐type sensor placement framework for the best reconstruction of structural responses and ground motions based on a full‐scale 3D finite element (FE) model of the building. The selected locations and types of sensors are capable of not only capturing the coupled bending‐torsional vibration but also providing an unbiased estimation of the unmeasured responses of seismic‐vulnerable components and bidirectional ground motions. A Kalman filtering algorithm‐based data fusion technique is employed to deal with the measurement data from multi‐type sensors. With the target of achieving the best reconstruction, an optimal sensor placement (OSP) configuration, which minimizes the reconstruction error, is achieved through a sequential sensor placement algorithm. To assess the feasibility of the proposed OSP framework and the accuracy of reconstructed responses and ground motions, a numerical study is also performed on the full‐scale 3D FE model of a super high‐rise building. The torsional effects of the building under bidirectional long‐period ground motions are assessed by comparison with the results without considering the torsional effect. The numerical results show that the proposed framework is feasible and the reconstructed responses and ground motions are accurate and that the torsional effects cannot be neglected in the seismic assessment of the building.

show abstract

Estimation of element‐by‐element demand‐to‐capacity ratios in instrumented SMRF buildings using measured seismic response

Cited by 18 publications

References 16 publications

Nonlinear seismic response reconstruction and performance assessment of instrumented wood‐frame buildings—Validation using NEESWood Capstone full‐scale tests

Nonlinear seismic response reconstruction and performance assessment of instrumented wood‐frame buildings—Validation using NEESWood Capstone full‐scale tests

Swarm-based Parallel Control of Adjacent Irregular Buildings Considering Soil–structure Interaction

Optimal multi‐type sensor placement for monitoring high‐rise buildings under bidirectional long‐period ground motions

Contact Info

Product

Resources

About