E-Defense Tests on Full-Scale Steel Buildings: Part 1 - Experiments Using Dampers and Isolators

Kasai, Kazuhiko; Ooki, Yoji; Motoyui, Shojiro; Takeuchi, Tōru; Sato, Eiji

doi:10.1061/40944(249)17

Cited by 23 publications

(10 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To demonstrate the validity of the improved method and the developed code, the result of a four‐story steel frame structure studied by Lignos has been compared with the results obtained from the MATLAB code developed in this research. The four‐story structure considered here for verification is a part of the full‐scale test series conducted on the E‐Defense shaking table in the Hyogo Earthquake Engineering Research Center in Japan . A two‐dimensional analytical model of the two‐bay frame derived from the 3D building has been developed by Lignos in which the deterioration models for the elements of the steel frame were a bilinear hysteretic model assigning to zero‐length springs .…”

Section: Verification Of the Improved Fam Methodsmentioning

confidence: 99%

“…The four-story structure considered here for verification is a part of the full-scale test series conducted on the E-Defense shaking table in the Hyogo Earthquake Engineering Research Center in Japan. [27][28][29] A twodimensional analytical model of the two-bay frame derived from the 3D building has been developed by Lignos in which the deterioration models for the elements of the steel frame were a bilinear hysteretic model assigning to zero-length springs. [26] The static pushover analysis using triangular load pattern was carried out to predict the performance of the structure.…”

Section: Verification Of the Improved Fam Methodsmentioning

confidence: 99%

See 1 more Smart Citation

A study on the accuracy of force analogy method in nonlinear static analysis

Safaei

Taslimi

Tehrani

2019

Structural Design Tall Build

View full text Add to dashboard Cite

Summary In this paper, the accuracy of the force analogy method (FAM) for nonlinear static (pushover) analysis is investigated. Hence, after explanation of the concept of FAM by a new approach, 12 2D steel special moment resisting frames with different configurations were derived from two different 3D archetypes and modeled using four various methods of capturing nonlinearity including SAP2000 super elements, OpenSees force‐based and displacement‐based fiber method, and FAM. In addition, a MATLAB code was developed for modeling and analyzing the frames by FAM. The accuracy of FAM in predictions of pushover curves, base shear forces, and plastic rotation of the critical hinges was investigated. The results indicated that in general, the predictions obtained using the FAM had a good agreement and compatibility with those from other methods of analysis currently used in practice for seismic performance assessment of structures.

show abstract

Section: Verification Of the Improved Fam Methodsmentioning

confidence: 99%

Section: Verification Of the Improved Fam Methodsmentioning

confidence: 99%

A study on the accuracy of force analogy method in nonlinear static analysis

Safaei

Taslimi

Tehrani

2019

Structural Design Tall Build

View full text Add to dashboard Cite

show abstract

“…An overview of the project was described in [1], whereas the collapse test and result are described in [2][3][4]. It was a part of an experimental project on steel buildings conducted at the E-Defense shake-table facility.…”

Section: Collapse Experiments and Simulationsmentioning

confidence: 99%

“…It was a part of an experimental project on steel buildings conducted at the E-Defense shake-table facility. An overview of the project was described in [1], whereas the collapse test and result are described in [2][3][4]. The three-directional ground acceleration histories recorded at the JR Takatori station during the 1995 Hyogo-ken Nanbu earthquake were used, by scaling the records by 0.05, 0.2, 0.4, 0.6, and 1.0 times.…”

Section: Collapse Experiments and Simulationsmentioning

confidence: 99%

Structural collapse correlative analysis using phenomenological fiber hinge elements to simulate two‐directional column deteriorations

Kasai

Nam

Maison

2016

Earthq Engng Struct Dyn

Self Cite

View full text Add to dashboard Cite

Summary This paper presents three‐dimensional nonlinear dynamic analyses of a full‐scale four‐story steel building tested to collapse in 2007 at the E‐Defense shake‐table facility in Japan, using strong ground motion. Local buckling and consequent strength deterioration of all six columns at the first‐story level were observed as the main reason for the building collapse. Fiber hinge element that consists of fibers discretizing the column cross section is used model each end of the column. It has zero length but considers finite yield‐zone length for the fiber to simulate elastoplastic behavior and local buckling. Other parts of the building are modeled by standard column, beam, truss, and spring elements. Despite the unavoidable limitation of the parameters defining the fiber hinge element's properties that are empirically determined from the behavior of the cantilever column tested using an identical steel member, the analysis using the element appears to simulate well the column behavior because of the axial load and biaxial bending moment whose relative magnitudes differ considerably because of the locations. The analysis results indicate different deterioration patterns of the columns and effects of complex loading such as compression and tensile axial load applied alternately, additional high frequency axial load caused by vertical accelerations, and shifting of the principal directions of the bending moments cycle by cycle. Responses such as story drift, accelerations, base shear, and energy dissipation are also simulated well, and progress of local deterioration in the first‐story columns and global soft‐story mechanism is clarified by the analysis. Copyright © 2016 John Wiley & Sons, Ltd.

show abstract

“…Results from the experiments conducted by Mazzolani et al [10], on retrofitting of damaged structures showed that the seismic performance of steel structures can be improved by both buckling restrained(BRB) braces and eccentric braces, but the first provided larger displacement capacity and they proved that with BRB the increase in stiffness and strength can be better controlled. Kassai et al [11], by using shaking table, conducted an experiment on a full scale five story steel frame structure with four different energy dissipation devices where BRB was among them; the frame structure was subjected to low intensity white noise and Takatori motion of the 1995 Kobe earthquake scaled to different intensity levels and the seismic performance results of the structures without and with these devices installed on four of five stories were compared where reduction in displacements, floor accelerations and story shears were reported on structures with BRB.…”

Section: Introductionmentioning

confidence: 99%

Research on Application of Buckling Restrained Braces in Strengthening of Concrete Frame Structures

et al. 2020

View full text Add to dashboard Cite

This paper examines the application of BRB in strengthening of reinforced concrete frame structures to meet seismic requirements according to Chinese seismic design code. Elastic response spectrum analysis and nonlinear time history analysis are performed by taking a real engineering example that suffers weak first floor irregularity due to added loads and addition of one floor. With the method of equivalent stiffness and displacement-based design method, buckling restrained brace parameters are deduced and are used to model BRB in ETABS using plastic wen model. Three configurations of buckling restrained braces are studied together with ordinary braces. Under elastic state, the relationship between the required cross section area of BRB and ordinary braces is deduced from the formula of calculating elastic bearing capacity where it is shown that the area of the ordinary braces must be 1.25 times that of BRB for ensuring the same performance. The results show that Inverted V brace configuration demonstrated better performance over single brace and V brace configurations and X brace configuration, although not recommended by Chinese code, is simulated and used in this paper and has demonstrated better performance over other configurations, and the further research on the practical use of this brace is recommended. Also, under action of strong earthquakes, by nonlinear time history analysis, buckling restrained braces demonstrated better performance of strengthening the structure and make it meet the requirement of code. Under this same condition, ordinary braces losses their bearing capacity due to excessive buckling.

show abstract

E-Defense Tests on Full-Scale Steel Buildings: Part 1 - Experiments Using Dampers and Isolators

Cited by 23 publications

References 7 publications

A study on the accuracy of force analogy method in nonlinear static analysis

A study on the accuracy of force analogy method in nonlinear static analysis

Structural collapse correlative analysis using phenomenological fiber hinge elements to simulate two‐directional column deteriorations

Research on Application of Buckling Restrained Braces in Strengthening of Concrete Frame Structures

Contact Info

Product

Resources

About