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Journal Article
Published: 01 February 2022
Earthquake Spectra (2022) 38 (1): 200–234.
... buildings had the heaviest structural damage. No structural damage could be observed in steel buildings. The aftershock sequence, which included 7 M5+ and 50 M4+ events, exacerbated structural damage in all types of buildings. The present study is based on the EERI field reconnaissance mission conducted...
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Journal Article
Published: 01 November 2021
Earthquake Spectra (2021) 37 (4): 2946–2970.
... concrete structures with torsional irregularities.” 20 7 2020 20 4 2021 Figure 5. Example stress-strain curves obtained from material tests for Unit A of Specimen-1: (a) concrete and (b) D16 steel bars. Tomomi Suzuki, The University of Auckland, 346 Khyber Pass Road, Newmarket...
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Journal Article
Published: 01 August 2021
Earthquake Spectra (2021) 37 (3): 2247–2266.
... spectrum methods. Typically, engineers first find column and beam dimensions that satisfy the drift limits, then they calculate the steel reinforcement that is required to fulfill strength, ductility and capacity design requirements. Usually, the design process is guided by and the outcome is checked...
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Journal Article
Published: 01 May 2021
Earthquake Spectra (2021) 37 (2): 988–1012.
... of collapse less than 10% against the maximum considered earthquake (MCE) shaking hazard. ASCE 7-16 provides four analysis methods to calculate the seismic demands on structures. In this study, 4-, 8-, 12-, and 16-story steel special moment frames (SMFs) are designed using the two most popular elastic...
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Journal Article
Published: 01 February 2021
Earthquake Spectra (2021) 37 (1): 204–234.
... periods, T c , ranging from 10 to 60 s. We perform incremental dynamic analysis on 9-, 20-, and 55-story steel moment-frame building models with fundamental periods of 1.88, 3.50, and 6.10 seconds, respectively. Even though filters with T c ⩾ 20 s have a minimal effect on the collapse capacities...
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Journal Article
Published: 01 February 2021
Earthquake Spectra (2021) 37 (1): 235–261.
... at the first story, is 3.5% and 3.0% in the transverse and longitudinal directions, respectively. The Building was designed with a nominal concrete compressive strength f ′ c = 25 MPa and rebar steel A630-420H grade with nominal yield strength f y = 420 MPa . Basements...
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Journal Article
Published: 01 December 2020
Earthquake Spectra (2020) 36 (2_suppl): 110–129.
... with moderate damage and 104 with severe damage. A total of 12,444 school buildings were considered. The location of the analyzed campuses and the PGA values recorded by the Institute of Engineering, UNAM accelerometric network are shown in Figure 1 . Figure 9. Damage in steel prototypes: (a), (b...
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Journal Article
Published: 01 December 2020
Journal of Environmental and Engineering Geophysics (2020) 25 (4): 513–528.
...Milad Mosharafi; SeyedBijan Mahbaz; Maurice B. Dusseault ABSTRACT Reinforced concrete is a versatile modern construction material. Despite its advantages as a composite material, corrosion of the embedded reinforcing steel leads to infrastructure deterioration and loss of service. Non-Destructive...
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Journal Article
Journal: Geophysics
Published: 06 July 2020
Geophysics (2020) 85 (5): E139–E152.
... considering steel-casing effects, but it is difficult and impractical to directly discretize arbitrarily oriented hollow steel-cased wells in a 3D reservoir-scale earth model because of their extremely high electrical conductivity and long hollow geometry. We have considered a borehole-to-surface EM...
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Journal Article
Published: 01 May 2020
Earthquake Spectra (2020) 36 (2): 718–740.
... that are equated on the basis of spectral shape and the slope of the Husid plot. The use of the initial rate of Arias Intensity as a control parameter is novel in the literature. The proposed approach enables the examination of the sole effect of the duration on structural responses of 2-story and 9-story steel...
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Journal Article
Published: 01 May 2020
Earthquake Spectra (2020) 36 (2): 537–553.
...Pablo Torres-Rodas; Jawad Fayaz, M.EERI; Farzin Zareian, M.EERI This study presents a critical assessment of the reliability of current base plate connections in steel special moment resisting frames (SMRFs). Using a probabilistic outlook, this research evaluates the reliability of exposed column...
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Journal Article
Published: 27 December 2019
Earthquake Spectra (2006) 22 (1): 47–64.
...André Filiatrault, M.EERI; Robert E. Bachman, M.EERI; Michael G. Mahoney, M.EERI This paper develops a performance-based seismic design procedure for pallet-type steel storage racks located in areas accessible to the public. Performance objectives for racks consistent with current building code...
Journal Article
Published: 01 November 2019
Earthquake Spectra (2019) 35 (4): 1927–1952.
... in the fragility analysis. In steel structures, global collapse is often characterized by dynamic instability due to the development of second-order effects ( Krawinkler 2006 ). Local collapse is typically associated to (1) excessive inelastic deformation demands imposed on structural members (e.g., buckling...
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Journal Article
Published: 01 November 2019
Earthquake Spectra (2019) 35 (4): 1953–1978.
... structural engineering decisions during the post-earthquake reconstruction of a modern city. Figure 2 presents the total floor area (in square meters) of new buildings with steel, concrete, or timber, lateral load–resisting structural systems. In essence, for the same 74 buildings used in Figure 1...
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Journal Article
Published: 01 November 2019
Earthquake Spectra (2019) 35 (4): 1611–1635.
...Raul Uribe; Siamak Sattar, M. EERI; Matthew S. Speicher; Luis Ibarra This study quantifies the impact of two common ground motion (GM) selection methods, included in U.S. standards, on the seismic performance evaluation of steel special moment frames. The methods investigated are a “traditional...
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Journal Article
Published: 01 August 2019
Earthquake Spectra (2019) 35 (3): 1507–1510.
... Testing of Components of Steel Structures for Buildings, ATC-24 , Redwood City, CA . Elkady A. , Ghimire S. , and Lignos D. , 2018 . Fragility curves for wide-flange steel columns and implications for building-specific earthquake-induced loss assessment...
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Journal Article
Published: 01 August 2019
Earthquake Spectra (2019) 35 (3): 1163–1187.
...Ramazan Ozcelik, M. EERI; Elif Firuze Erdil, M. EERI Three story–three bay reinforced concrete (RC) frames with and without chevron braces were tested using the continuous pseudodynamic test method. New steel–concrete composite lateral load–carrying members called Buckling Restrained Braces (BRBs...
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Journal Article
Published: 01 May 2019
Earthquake Spectra (2019) 35 (2): 1023–1043.
... 0.95 9.3 Transverse (Ø6 mm) 475 625 0.25 0.25 9.8 Note: f y , steel yield strength; f u , steel ultimate tensile strength; ε y , steel yield strain; ε h , steel strain at hardening onset; ε u , steel strain at ultimate strength. Figure 2. Test setup...
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Journal Article
Published: 01 May 2019
Earthquake Spectra (2019) 35 (2): 653–677.
... by damage to the attached architectural finishes, doors, cabinets, plumbing fixtures, and embedded mechanical and electrical systems. Interior partition walls for building construction in the United States consist of light-gage steel framing that is sheathed with gypsum drywall. The typical office...
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Journal Article
Published: 01 May 2019
Earthquake Spectra (2019) 35 (2): 589–610.
... motions on 22 steel moment frame building models with heights of 3, 9, and 20 stories. We find that if T 1 ≤ T ≤ 2 T 1 , Sa 70% ( T ) is efficient and usually sufficient for the considered levels of highly nonlinear response. Sa 70% (1.5 T 1 ) is generally an efficient choice. We find that Sa 70% ( T...
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