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Article
Seismic Analysis Of A Low-Damage Precast Wall With End Columns (PREWEC) Including Interaction With Floor Diaphragms
Journal of the Structural Engineering Society of New Zealand
  • R. S. Henry, University of Auckland
  • S. Aaleti, Iowa State University
  • Sri Sritharan, Iowa State University
  • J. M. Ingham, University of Auckland
Document Type
Article
Publication Date
4-1-2012
Abstract

The 201012011 Canterbury earthquakes have demonstrated that low-damage structural systems should be adopted to improve the seismic performance of concrete buildings and to reduce the economic and social impact of building damage in future earthquakes. One such /ow-damage structural system is selfcentering precast concrete walls that utilise jointed construction and unbonded post-tensioning. A new low-damage concrete wall system that uses this self-centering design is PreWEC, which consists of a precast wall with end columns. The PreWEC system was designed to overcome the deficiencies of previous /ow-damage wall systems by increasing the moment capacity in a cost effective manner, so that the PreWEC system is comparable to traditional reinforced concrete construction in addition to providing superior seismic resilience. It is important that when a building is constructed using a low-damage wall system, its seismic performance, including the self-centering capability, is not compromised by damage caused to other structural elements when the building is subjected to an earthquake input motion. Similarly, it is important to avoid damage occurring during excitation that arises from interaction between the wall system and other structural elements. Experimental and analytical validation of the PreWEC system is summarised in addition to details of analytical studies that were performed to examine the interaction between the PreWEC wall, the floor diaphragms and gravity columns, as well as the seismic response of a prototype building that included PreWEC walls. Recommendations are presented to improve the seismic design practice for /owdamage concrete buildings with specific consideration to the wall-to-floor interaction.

Comments

This article is from Journal of the Structural Engineering Society of New Zealand 25(1)2012:69-81. Posted with permission.

Copyright Owner
Henry, R.S. et al
Language
en
Date Available
2014-12-15
File Format
application/pdf
Citation Information
R. S. Henry, S. Aaleti, Sri Sritharan and J. M. Ingham. "Seismic Analysis Of A Low-Damage Precast Wall With End Columns (PREWEC) Including Interaction With Floor Diaphragms" Journal of the Structural Engineering Society of New Zealand Vol. 25 Iss. 1 (2012) p. 69 - 81
Available at: http://works.bepress.com/sri_sritharan/13/