Performance of Steel Frame Building which Experienced Intense Ground Motion

Anderson, James C.; Johnston, R.

doi:10.1061/(asce)0887-3828(1998)12:4(186)

Cited by 9 publications

(4 citation statements)

References 1 publication

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“…Some of these observations are the following. Anderson and Johnston (1998) report the damage of a soft-story steel building that was affected by the Northridge 1994 earthquake. They state that the residual displacement of the ground story of the building was 7.6 cm and it was judged unsafe.…”

Section: Damage Observationsmentioning

confidence: 99%

The use of post-earthquake residual displacements as a performance indicator in seismic assessment

Yazgan

Dazio

2011

Georisk: Assessment and Management of Risk for Engineered Syste

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PrefaceModern performance based earthquake engineering addresses design, evaluation, construction, maintenance and decommission of structures and requires that their performance during an earthquake can be predicted with a known degree of accuracy. In this framework the importance of residual displacements is twofold: On one hand they represent a significant source of damage affecting mainly the serviceability and the repairability of the structure. On the other hand, after an earthquake, residual displacements are often the only measurable indicator of the shaking occurred during the earthquake. In the framework of a pre-earthquake design or assessment process, the expected residual displacements need to be predicted; while during a post-earthquake assessment the actual residual displacements can be measured.Within his present doctoral dissertation, Mr. Yazgan developed and validated against experimental evidence a new and original methodology to improve the estimate of maximum deformations occurred during an earthquake taking into account both observable damage and measurable residual displacements. The methodology is based on the Bayesian probabilistic theory and, as a particular novelty, explicitly considers model error. To estimate model error Mr. Yazgan carried out a very extensive study on the numerical modelling of structures under earthquake, which also allowed the formulation of practical modelling recommendations. The quantification of model error is of course of fundamental importance also for any realistic pre-earthquake prediction of residual displacements.The thorough and comprehensive work presented by Mr. Yazgan allows a deep understanding of the challenges relevant to the use of residual displacements in the seismic performance assessment of structures and his developments represent a new effective way to achieve this important goal. Zurich, January 2010Dr. Alessandro Dazio SummarySafety assessment of damaged structures is a pivotal part of the post-earthquake recovery process. As a result of the deformation histories that have occurred during the damaging earthquake, the key structural properties of the columns, beams and walls that contribute to the seismic resistance change. The key structural properties include stiffness, strength and deformation capacity. An accurate estimation of the residual key structural properties is crucial in identifying vulnerability of the damaged structure.These residual structural properties are known to be strongly dependent on the maximum deformations that have occurred. A new post-earthquake assessment method is developed following this premise. After an earthquake, the maximum deformations experienced by a damaged structure can be estimated using the developed method.The essential idea behind the method is to probabilistically estimate the experienced maximum deformations based on the post-earthquake residual displacements and the visible structural damage. The major uncertainties related to the estimated maximum deformations are explicitly treated in the me...

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Section: Damage Observationsmentioning

confidence: 99%

The use of post-earthquake residual displacements as a performance indicator in seismic assessment

Yazgan

Dazio

2011

Georisk: Assessment and Management of Risk for Engineered Syste

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“…Or as mentioned in the Introduction section, the Northridge earthquake in 1994, and the Alaska earthquake in 1964 where corroded structures experienced more damage and failure than other structures [23].…”

Section: Modeled Steel Moment Frame To Check High Cycle Fatiguementioning

confidence: 99%

“…Corroded steel members are more likely to experience damage and failure when a strong earthquake occurs, for example, the Wen Chuan earthquake in China, the Osaka earthquake in Japan [22], the Northridge earthquake in 1994 [23], and the Alaska earthquake in 1964, where corroded structures experienced more damage and failure than other structures.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Seismic Fatigue Capacity of High- and Mild-Strength Structural Steels with and without Corrosion

Razmkhah,

Ghaderi,

Gerami

2023

Shock and Vibration

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The test results on hourglass specimens of steel under repetitive sine loads provide graphs that indicate the stress range in terms of the number of cycles to failure and are known as S-N curves. Using this curve, it is determined that if the applied stress is less than a certain level, failure will not occur as the number of load cycles increases. The S-N curve can be affected by several factors such as yield stress, temperature, surface properties, and corrosion. In this research, the S-N curve has been investigated for two types of high-strength steels, S690 and S460, as well as two types of mild-strength steels, S235 and S355, at 25°C, and S355 with corrosion. The numbers of samples used for S235 and S460 steels were 45 each while S355 and S690 steels were 36 each and for S355 with corrosion was 15 with the high cycle fatigue curve obtained for them. To investigate the effect of plate thickness on the high cycle fatigue of the samples, four sets of 24-piece S235 steel samples, being 96 samples in total, were made of plates with different thicknesses of 8, 12, 15, and 20 mm and tested. Finally, a four-story three-span steel moment frame was designed, and under the Northridge earthquake record, the high cycle fatigue was investigated. It was observed that the high cycle fatigue was not effective for the mentioned structure under the Northridge earthquake record, but in the corroded structure, damage from high cycle fatigue occurs under this record.

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“…However, due to the relatively large slenderness ratios of the columns, structures of this type may be susceptible to damage caused by local buckling under constant axial load and cyclic lateral forces [1]. Although there have been numerous experimental and analytical investigations on steel elements, recent research on inelastic behaviors of steel elements subjected to simulated earthquake loading has been somewhat limited [2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Seismic behavior of wide-flange steel column with confined potential plastic hinge

Xiao

Zhou

2009

Journal of Constructional Steel Research

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Performance of Steel Frame Building which Experienced Intense Ground Motion

Cited by 9 publications

References 1 publication

The use of post-earthquake residual displacements as a performance indicator in seismic assessment

The use of post-earthquake residual displacements as a performance indicator in seismic assessment

Experimental Study on Seismic Fatigue Capacity of High- and Mild-Strength Structural Steels with and without Corrosion

Seismic behavior of wide-flange steel column with confined potential plastic hinge

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