Overview

SECED 2015 was a two-day conference on Earthquake and Civil Engineering Dynamics that took place on 9-10th July 2015 at Homerton College, Cambridge.

This was the first major conference to be held in the UK on this topic since SECED hosted the 2002 European Conference on Earthquake Engineering in London.

The conference brought together experts from a broad range of disciplines, including structural engineering, nuclear engineering, seismology, geology, geotechnical engineering, urban development, social sciences, business and insurance; all focused on risk, mitigation and recovery.

Conference themes

  • Geotechnical earthquake engineering
  • Seismic design for nuclear facilities
  • Seismic hazard and engineering seismology
  • Masonry structures
  • Risk and catastrophe modelling
  • Vibrations, blast and civil engineering dynamics
  • Dams and hydropower
  • Seismic assessment and retrofit of engineered and non-engineered structures
  • Social impacts and community recovery

Keynote speakers

SECED 2015 featured the following keynote speakers (affiliations correct at the time of the conference):

  • Peter Ford and Tim Allmark, Office for Nuclear Regulation, UK
  • Don Anderson, CH2M HILL, Seattle, USA
  • Bernard Dost, Royal Netherlands Meteorological Institute, The Netherlands
  • Anne Kiremidjian, Stanford University, USA
  • Rob May, Golder Associates, Australia
  • Tiziana Rossetto, University College London, UK
  • Andrew Whittaker, University at Buffalo, USA
  • Mike Willford, Arup, The Netherlands

Information for authors

SECED allows the self-archiving of the Author Accepted Manuscripts (AAM) from the SECED 2015 Conference. This means that all authors can make their conference paper available via a green open access route. The full text of your paper may become visible within your personal website, your institutional repository, a subject repository or a scholarly collaboration network signed up to the voluntary STM sharing principles. It may also be shared with interested individuals, for teaching and training purposes at your own institution and for grant applications (please refer to the terms of your own institution to ensure full compliance).

To deposit your AAM, please adhere to the following conditions:

  • You should include a link back to the SECED website.
  • You should include all of the relevant metadata (article title, conference name, conference location, conference dates etc.).
  • You should include a clear licensing statement (see below).

SECED allows authors to deposit their AAM under the Creative Commons Attribution Non-commercial International Licence 4.0 (CC BY-NC 4.0). The deposit must clearly state that the AAM is deposited under this licence and that any reuse is allowed in accordance with the terms outlined by the licence. To reuse the AAM for commercial purposes, permission must be sought by contacting seced@ice.org.uk. For the sake of clarity, commercial usage would be considered as, but not limited to:

  • Copying or downloading AAMs for further distribution for a fee.
  • Any use of the AAM in conjunction with advertising.
  • Any use of the AAM by for promotional purposes by for-profit organisations.
  • Any use that would confer monetary reward, commercial gain or commercial exploitation.

Should you have any questions about our licensing policies, please contact seced@ice.org.uk.

 

Earthquake Risk and Engineering towards a Resilient World

9 - 10 July 2015, Homerton College, Cambridge, UK

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Seismic Performance of Multi-Storey Special Concentric Braces in Tall Buildings

Category: Innovation in seismic analysis and design
Year: 2015
File: ALGAARD, WHITBY, EASTON

Hits: 4030

Review

Special Concentric Braced Frames (SCBFs) can provide an efficient design solution for tall buildings in zones of moderate to high seismicity. Such a solution provides a direct axial load path and offers the moderate amount of ductility typically sought for tall buildings. The scale of these buildings is such that braces are large enough to provide reasonably symmetrical behaviour in tension and compression. However, on a typical perimeter column grid of 8-12m the brace angle resulting from conventional single storey braces is inefficient.

A more efficient solution is achieved with multi-storey braces spanning across 2-3 floors between columns, taking restraint at intermediate floors to preserve global compactness of the braces and reasonably symmetrical behaviour. However, the design code framework (e.g. AISC 341-10) does not extend to such a configuration, and there is little or no test data available.

This paper reports on the findings from an analytical case study carried out for the design of Reforma 509, a 238m tall mixed-use tower currently under construction in Mexico City, where 3-storey special concentric braces are employed to optimise the efficiency of the structural performance. The study concludes that a multi-storey brace configuration with intermediate restraints can exhibit distributed yielding and provide a similar amount of ductility to conventional single-storey braces. However, to ensure this behaviour the local compactness criteria should be increased to a higher level than the minimum requirements of AISC 341-10. The study also concludes that such an increase in the criteria is beneficial also for single-storey braces.

Tags: Bracing  
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