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Opportunity at National Institute of Standards and Technology (NIST)

Improving Seismic Performance Assessment of Reinforced Concrete and Masonry Structures

Location

Engineering Laboratory, Materials and Structural Systems Division

RO# Location
50.73.11.C0169 Gaithersburg, MD

Please note: This Agency only participates in the February and August reviews.

Advisers

Name E-mail Phone
Sattar, Siamak siamak.sattar@nist.gov 301.975.6391

Description

1. This research opportunity focuses on improving the state-of-the-art concerning the assessment and improvement of seismic performance of reinforced concrete and masonry structures with the focus on the performance-based earthquake engineering (PBEE) framework. Opportunities exist for (1) developing improved nonlinear modeling capabilities to evaluate the response of new and existing building structures and structural elements, (2) computing the collapse risk of new and existing buildings using Incremental Dynamic Analysis or other approaches, (3) studying the feasibility of using high strength materials in reinforced concrete buildings for seismic applications, (4) applying the Fiber Reinforced Polymer (FRP) retrofit design to improve the performance of existing buildings, (5) quantifying the impact of earthquake strong ground motions, their characteristics and their selection on building design and assessment, (6) improving design approaches for reinforced concrete structural walls including detailing requirements, (7) conducting analytical and experimental studies on reinforced concrete beam-columns and structural walls in new, existing, and retrofitted/repaired buildings, (8) quantifying the effects of uncertainties on the prediction of structural response, (9) developing Immediate Occupancy (IO) performance objective, and (10) evaluating the performance and conducting cost assessment analysis of available retrofitting approaches to mitigate earthquake vulnerabilities in existing buildings, especially nonductile systems.

 

2. 

Siamak Sattar, Liel A.  B., “Collapse Indicators for Existing Nonductile Concrete Frame Buildings with Varying Column and Frame Characteristics”, Engineering Structures, (2017), 152, 188-201.

Sattar, Siamak and Abbie B. Liel “Seismic Performance of Nonductile Reinforced Concrete Frames with Masonry Infill Walls: I. Development of Strut Model Enhanced by Finite Element Models”, Earthquake Spectra, (2015), 32 (2), 795-818.

Sattar, Siamak and Abbie B. Liel “Seismic Performance of Nonductile Reinforced Concrete Frames with Masonry Infill Walls: II. Collapse Assessment”, Earthquake Spectra, (2015), 32 (2), 819-842.

Hariri-Ardabili, Mohammad A., Siamak Sattar, Homayoon Estekanchi, “Advanced Performance-Based Seismic Assessment of Concentrically Braced Frames using THA, IDA and ETA Methods”, Journal of Engineering Structures, 69 (2014), pp. 216-234.

 

Keywords:
Seismic Performance; Earthquake Engineering; Performance-based Seismic Design; Uncertainty Quantification; Reinforced Concrete Structures; Collapse Assessment; Ground Motion Selection; High Strength Reinforcement; FRP retrofit; Cost Assessment Analysis; Immediate Occupancy

Eligibility

Citizenship:  Open to U.S. citizens
Level:  Open to Postdoctoral applicants
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