... building with composite floor systems and steel columns as the gravity system, whereas for Japan, the archetype is designed using a steel moment frame made of square concrete-filled steel tube (CFT) columns and composite beams and installed with oil dampers. Although the design procedures followed...

.... The Japan Prototype Building made of steel moment-resisting frames equipped with oil dampers is 1.5 times stronger in terms of the collapse safety margin than the US Prototype Building made of an reinforced concrete (RC) core shear wall system. The difference between the two buildings is believed to occur...

...Hamidreza Salmasi Javid; Masoud Mohammadgholiha; Siavash Soroushian; Esmaeel Rahmanishamsi; Emmanuel “Manos” Maragakis Fragility curves for steel-framed partition walls in current guidelines (such as FEMA P-58) are mainly based on experimental studies with limited number of geometries. In light...

... 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...

... systems, and hence, the reusable units had little damage. Unit A was connected with Units B and C by boundary steel plates when assembled on the shake table before the tests. Both specimens had a “soft” first story; RC shear walls in the short floor-plan direction (i.e. X-direction in Figure 1...

.... 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 against experience...

... 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...

... 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...

... 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...

...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...

.... The latest LBMW design is from 1986. From the 12,444 buildings analyzed, 4467 (36%) corresponded to LBMW. Chiapas, Mexico, and Oaxaca were the states with most LBMW school buildings ( Table 1 ). This prototype was mainly found in rural and semi-urban zones. Recurrent damages observed in steel prototypes...

... 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...

... 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...

...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...

...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...

... times T 1 ), and AvgSA (average of SA values between 0.2 T 1 and 1.5 T 1 ). 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...

... experiments that showed floor collapse ( Structural Engineering Society of NZ et al. 2009 ) and concrete columns moving apart from each other because of reinforced concrete beam plastic hinge elongations during lateral loading ( Matthews 2004 , Bull 2004 ). Also, cold formed steel decking profiles supporting...

...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...

... 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...

...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...