- Weak-Axis Behavior of Wide Flange Columns Subjected to Blast
- N. Krishnappa ; M. Bruneau
- Book Title / Journal: ASCE J. Structural Engineering
- Year: 2014 , Volume: 140 , Series:
- Structure types ; Steel structures
PDF |
- A fire resistance design method for thin-walled steel studs in wall panel constructions exposed to parametric fires
- Y.C. Wang ; A. Shahbazian
- Book Title / Journal: Thin-Walled Structures, 77, 67–76
- Year: 2014 , Volume: , Series:
- Structure types ; Steel structures
PDF |
- Advances in design requirements for Buckling Restrained Braced frames
- K.S. Robinson
- Book Title / Journal: New Zealand Society for Earthquake Engineering (NZSEE) Annual Technical Conference
- Year: 2014 , Volume: , Series:
- Structure types ; Steel structures
- Keywords: Buckling Restrained Braced frames ; design requirements
- Description
- Although buckling restrained braces (BRB) have now been a codified system in the US for over five years and have been used in design for much longer, the
system is still relatively new in New Zealand. BRB’s are now entering their second US code cycle with the AISC Seismic Provisions for Structural Steel Buildings, AISC 341-10, which has introduced significant changes. In addition, several key issues of current research will be discussed that are contributing to the next set of code requirements for 2016. These new changes will be highlighted along with methods to effectively design Buckling Restrained Braced Frames (BRBF) using New Zealand codes. The latest innovative uses for BRBs will also be discussed, including applications to alleviate
building pounding concerns when seismic joints are of limited size, many different configurations possible for retrofit construction, ideas for high rise applications, and other unique applications.
PDF |
- Review of buckling restrained brace design and behaviour
- A.S. Jones ; C-L Lee ; G.A. MacRae ; G.C. Clifton
- Book Title / Journal: New Zealand Society for Earthquake Engineering (NZSEE) Annual Technical Conference
- Year: 2014 , Volume: , Series:
- Structure types ; Steel structures
- Keywords: Buckling restrained braces ; brace design
- Description
- Buckling restrained braces (BRBs) have become a popular alternative to traditional bracing in seismic loading due to their ability to develop full and balanced hysteresis loops resulting in similar tension and compression capacities. However, research internationally for the design and behaviour of BRB compositional elements is still in the infancy stage, with intellectual property rights by commercial providers within America and Asia limiting the available research.
This paper considers the history and development of BRBs (steel-concrete and steel-steel), current design practice, areas for further development and forthcoming research to be carried out that the University of Canterbury. The outcomes of this research which consider the sensitivity in BRB member design aims to equip engineers with an understanding of BRBs but also the ability to design BRBs without the need for testing verification.
PDF |
- Non-destructive method to investigate the hardness - plastic strain relationship in cyclically deformed structural steel elements
- H. Nashid ; W.G. Ferguson ; G.C. Clifton ; M. Hodgson ; M- Battley ; C. Seal ; J.H. Choi
- Book Title / Journal: New Zealand Society for Earthquake Engineering (NZSEE) Annual Technical Conference
- Year: 2014 , Volume: , Series:
- Structure types ; Steel structures ; Non Destructive Testing
- Keywords: steel elements ; non-destructive method
- Description
- A non-destructive hardness testing method is being developed to determine plastic strain in steel elements that have been subjected to inelastic seismic loading. The focus of this study is on the active links of eccentrically braced frames (EBFs). The 2010/2011 Christchurch earthquake series, especially the very intense February 22 shaking, was the first earthquake worldwide to push complete EBF systems into their inelastic state, generating a moderate to high level of plastic strain in EBF active links for a range of buildings from 3 to 23 storeys in height. Plastic deformation was confined to the active links. This raised two important questions: 1) what was the extent of plastic deformation; and 2) what effect does that have on post-earthquake steel properties? To answer these questions a range of actions are being taken. A non-destructive hardness test method is being developed to determine a relationship between hardness and plastic strain in active link beams. Active links from the earthquake affected, 23-storey Pacific Tower building in Christchurch has been hardness and material property tested to determine the changes in the steel, and cyclic testing of active links to defined levels of inelastic demand is underway. Test results to date show clear evidence that the hardness based method is able to give a good relationship between hardness measurements and plastic strain. This paper presents recent significant findings from this project. Principal of these is the discovery that hot rolled steel tested beams, all carry manufacturing induced plastic strains, in regions of the webs, of up to 5%. It is the intention of the overall research project, to establish a robust relationship between measured hardness and plastic strain demand in cyclically deformed steel elements and a comprehensive guideline to assess commonly used seismic-resisting systems will be adopted.
PDF |
- Characterization of Steel Foams for Structural Components.
- B.G. Smith ; S. Szyniszewski ; J.F. Hajjar ; B.W. Schafer ; S.R. Arwade
- Metals, Vol. 2, No. 4, pages 399-410
- Book Title / Journal:
- Year: 2012 , Volume: , Series:
- Structure types ; Steel structures
PDF |
- Study, test and designing of cold formed section as per AISI code.
- S.M. Hardwani ; A.V. Patil
- Int. Journal of Applied Sciences and Engineering Research, Vol. 1, Issue 3, pages 522-531.
- Book Title / Journal:
- Year: 2012 , Volume: , Series:
- Structure types ; Steel structures
PDF |
- Study on Shaking-Table Experiment of a Full-Scale Four-Story Steel Building
- T. Tuan-Nam ; K. Kasai
- Book Title / Journal: 15th World Conference on Earthquake Engineering
- Year: 2012 , Volume: , Series:
- Structure types ; Steel structures ; Earthquake engineering
- Keywords: E-Defense shaking-table ; numerical analysis ; collapse experiment ; local buckling ; incremental dynamic analysis
- Description
- This paper presents the dynamic collapse analysis of a full-scale four-story steel building which was
experimented to collapse at the E-Defense shaking-table in Japan, in 2007, using the ground acceleration histories recorded at the JR Takatori station during the 1995 Hyogo-ken Nanbu earthquake. Deterioration of columns on the first story level due to local buckling is thought to be one of major reasons for the building collapse. Fiber method approach is adopted in the analysis to simulate local buckling at the column ends. Hypothetical analyses estimate the collapse capacity of the building specimen at approximately 0.9 times Takatori ground motion level. The collapse capacity of the building specimen under various propagating directions of the non-scaled Takatori ground motion is also investigated, showing that the building likely collapses under any propagating direction of the ground motion.
PDF |
- Plastic moment of intermediate horizontal boundary elements of steel plate shear walls.
- B. Qu ; M. Bruneau
- AISC Engineering Journal, Vol.48, No.1, pp.49-64
- Book Title / Journal:
- Year: 2011 , Volume: , Series:
- Structure types ; Steel structures
PDF |
- Perforated metal deck design with commentary, and Appendix B.
- L.D. Luttrell
- Steel Deck Institute, Report No. PMDDWC
- Book Title / Journal:
- Year: 2011 , Volume: , Series:
- Structure types ; Steel structures
PDF |
- Structural behaviour and design of cold-formed steel wall systems under fire conditions.
- S. Gunalan
- Book Title / Journal: PhD thesis, Queensland University of Technology, Australia
- Year: 2011 , Volume: , Series:
- Structure types ; Steel structures
- Description
- This research has developed comprehensive experimental and numerical thermal and structural performance data for both the conventional and the proposed new load bearing LSF wall systems under standard fire conditions. Finite element models were developed to predict the failure times of LSF walls accurately. Idealized hot flange temperature profiles were developed for non-insulated, cavity and externally insulated load bearing wall systems. Suitable fire design rules and spread sheet based design tools were developed based on the existing standards to predict the ultimate failure load, failure times and failure temperatures of LSF wall studs. Simplified equations were proposed to find the critical temperatures for varying wall panel configurations and load ratios. The results from this research are useful to both structural and fire engineers and researchers. Most importantly, this research has significantly improved the knowledge and understanding of cold-formed LSF loadbearing walls under standard fire conditions.
PDF |
- Structural and thermal performance of cold-formed steel stud wall systems under fire conditions
- P. Kolarkar
- Book Title / Journal: PhD thesis, Queensland University of Technology, Australia
- Year: 2011 , Volume: , Series:
- Structure types ; Steel structures
- Description
- this research has developed comprehensive experimental thermal and structural performance data for both the conventional and the proposed non-load bearing and load bearing stud wall systems under fire conditions. Idealized hot flange temperature profiles have been developed for non-insulated, cavity insulated and externally insulated load bearing wall models along with suitable equations for predicting their failure times. A graphical method has also been proposed to predict the failure times (fire rating) of non-load bearing and load bearing walls under different load ratios. The results from this research are useful to both fire researchers and engineers working in this field. Most importantly, this research has significantly improved the knowledge and understanding of cold-formed LSF walls under fire conditions, and developed an innovative LSF wall system with increased fire rating. It has clearly demonstrated the detrimental effects of using cavity insulation, and has paved the way for Australian building industries to develop new wall panels with increased fire rating for commercial applications worldwide.
PDF |
- Behavior of Vertical Boundary Elements in Steel Plate Shear Walls
- B. Qu ; M. Bruneau
- Engineering Journal, 2nd Quarter, Vol.47, No.2, pp. 109-122
- Book Title / Journal:
- Year: 2010 , Volume: , Series:
- Structure types ; Steel structures
PDF |
- Capacity Design of Intermediate Horizontal Boundary Elements of Steel Plate Shear Walls
- B. Qu ; M. Bruneau
- Journal of Structural Engineering, Vol. 136, No.6, pp. 665-675, ASCE
- Book Title / Journal:
- Year: 2010 , Volume: , Series:
- Structure types ; Steel structures
PDF |
- Seismic Behavior of Code-Designed Steel Moment Resisting Concentrically Braced Frames (MRCBFS) in Soft Soils.
- Edgar Tapia ; Arturo Tena-Colunga
- Proceedings of the 9th U.S. National and 10th Canadian Conference on Earthquake Engineering, Toronto, Ontario, Canada • Paper No 330.
- Book Title / Journal:
- Year: 2010 , Volume: , Series:
- Structure types ; Steel structures
PDF |
