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Alternative design philosophies and solutions for the seismic design of low-damage buildings. Low-damage performance objectives, analysis and design criteria for buildings. Introduction to base-isolation, viscous dampers, PRESSS-Technology and the hybrid (rocking-dissipative) system concept. Introduction to and application of Displacement Based Design (DBD). Simplified modelling and analysis techniques. Consideration of non-structural elements. Connection between floor-diaphragm and lateral resisting systems. Capacity Design: Issues and solutions. Examples of on- site applications worldwide in low-, medium- or high-seismic areas. Constructability aspects, sequence and detailing.
The objective of the course is to introduce the students to the displacement-based design (DBD) of buildings to achieve low-damage outcomes. A brief overview of historical developments in the field of seismic design, with the evolution of Direct DBD, is provided. Guidance is provided for DBD of single-degree of freedom structures and multi-storey RC wall buildings. The emerging philosophy of low-damage seismic design (LDSD) is then described, with reference to recent developments in New Zealand. Options for undertaking LDSD of cantilever RC wall buildings are then presented, with hybrid rocking RC structures discussed. The seismic design and detailing requirements for non-structural elements within low-damage buildings are emphasized and finally, the design of low-damage base-isolated buildings is introduced. Practice exercises are included within the course to assist with application of the content presented.
At the end of the course, students are expected to be able to:Explain the differences in the design philosophy between a low-damage design solution and a standard building design solution. Explain the rationale for using a displacement-based seismic design approach as opposed to a force-based design approach.Describe the key steps and assumptions made in the Direct displacement-based design (DDBD) approach.Use DDBD and capacity design to identify the required strength of traditional moment resisting frame and RC wall structures.Describe the characteristics and typical mechanical properties of various technologies (such as viscous dampers, base-isolation devices and pre-stressed rocking systems) used to achieve low-damage structures.Use DDBD and capacity design to identify the required strength of structures with base-isolation, adder dampers or rocking hybrid systems.
Subject to approval of the Head of Department or Programme Director.
ENCI615
Students must attend one activity from each section.
Tim Sullivan
Final Exam50%Assignment50%Total100%
Pennucci, D.; Calvi, G. M.; Sullivan, T. J; Displacement-Based Design of Precast Walls with Additional Dampers ; Journal of Earthquake Engineering, 2009.
Priestley, M. J. N. , Calvi, G. M., Kowalsky, Mervyn J; Displacement-based seismic design of structures ; IUSS Press, 2007.
Priestley, M.J.N; Myths and Fallacies in Earthquake Engineering – Conflicts Between Design and Reality ; Vol.26, No.3; Bulletin of NZ National Society for Earthquake Engineering, 1993.
Priestley, M.J.N; Performance Based Seismic Design ; Paper No. 2831; Proceedings 12th World Conference on Earthquake Engineering, Auckland, New Zealand, 2000.
Sullivan, T.J. and Lago, A; Towards a simplified Direct DBD procedure for the seismic design of moment resisting frames with viscous dampers ; Vol. 35; Engineering Structures, 2012.
Sullivan, Timothy J. , Priestley, M. J. N., Calvi, G. M; A model code for the displacement-based seismic design of structures : DBD12 ; [Rev. version]; IUSS Press, 2012.
Domestic fee $1,197.00
International Postgraduate fees
* All fees are inclusive of NZ GST or any equivalent overseas tax, and do not include any programme level discount or additional course-related expenses.
This course will not be offered if fewer than 5 people apply to enrol.
For further information see Civil and Natural Resources Engineering .