B. Deam, M. Fragiacomo, A. Buchanan and S. Pampanin
Department of Civil Engineering, University
of Canterbury, Christchurch, New Zealand
A. Palermo
Dipartimento di Ingegneria Strutturale, Politecnico di Milano, Italy
Recent developments and successful preliminary experimental validations
of innovative types of ductile connections for multi-storey seismic-resisting
laminated veneer lumber (LVL) timber buildings have opened major opportunities
for extensive use of structural timber in seismic regions. These particular
solutions, named jointed ductile connections or hybrid systems are based on
post-tensioning techniques to assemble structural laminated veneer lumber (LVL)
members for both frame and shear wall systems which are designed to exhibit
controlled rocking deformations during seismic loading. These systems have been
proposed and successfully tested using concepts developed for high-performance
seismic-resisting precast concrete buildings, currently being approved in major
seismic codes and design guidelines worldwide. The extremely satisfactory
results of quasi-static cyclic and pseudodynamic experimental tests on exterior
beam-column joint subassemblies, column-to foundation connections and shear
wall systems have provided valuable confirmation of the high seismic
performance of these laminated veneer lumber (LVL) systems, as well as the
reliability of the adopted design criteria and methodology. In this paper,
after a brief introduction to the concept of post-tensioned seismic-resisting
laminated veneer lumber (LVL) structures and an overview of experimental
results, particular focus will be given to seismic design aspects, within a
performance-based design approach, as a sound basis for the preparation of
seismic design code provisions.
References
Palermo, A. (2004). The
use of controlled rocking in the seismic design of bridges, Ph.D. thesis,
Structural Engineering Dept., Technical University of Milan, Italy.
Palermo A., Pampanin, S., Calvi, G.M. (2005)
Concept and development of Hybrid Systems for Seismic-Resistant Bridges,
Journal of Earthquake Engineering, Imperial College PRESS, Vol. 9(6), pp.
899-921.
Palermo A., Pampanin S.,
Buchanan A., Newcombe M. (2005). Seismic design of multi-storey buildings using
Laminated Veneer Lumber (LVL), NZEES Conference, March 11- 13, 2005, New
Zealand.
Palermo A., Pampanin S.,
Fragiacomo M., Buchanan A., Deam B., (2006a). Innovative seismic solutions for
multi-storey LVL timber framed buildings, World Conf on Timber Engg, August
2006, Portland, USA.
Palermo A., Pampanin S.,
Buchanan A., (2006b). Experimental Investigations on LVL seismic resistant wall
and frame subassemblies, ECEES, First European Conference on Earthquake
Engineering and Seismology, September 3- 8, 2006, Geneva, Switzerland, (paper
accepted).
Palermo A., Pampanin S.,
Fragiacomo M., Buchanan A., Deam B., Pasticier L., (2006c). Quasi-static cyclic
tests on seismic-resistant beam-to-column and column-to-foundation subassemblies
using Laminated Veneer Lumber (LVL), 19th ACMSM, December, 2006, Christchurch,
New Zealand, (paper accepted).
Palermo, A., Pampanin,
S., Carr, A., (2005). Efficiency of Simplified Alternative Modelling Approaches
to Predict the Seismic Response of Precast Concrete Hybrid Systems, fib
Symposium, Budapest.
Pampanin S., (2005). Emerging Solutions for
High Seismic Performance of Precast/Prestressed Concrete Buildings, Jo. of Adv.
Concrete Technology, invited paper, “High performance systems” 3(2), 202-223.
Pampanin, S., Christopoulos, C., Priestley, M.
J. N. (2002). Residual deformations in the performance-based seismic assessment
of frame structures, Report Rose-2002/02, IUSS PRESS, Pavia.
Pampanin, S., Priestley, M. J. N., Sritharan,
S. (2001). Analytical modelling of the seismic behaviour of precast concrete
frames designed with ductile connections, Journal of Earthquake Engineering, 5(3),
329-367.
Pampanin S. (2000). Alternative Design
Philosophies and Seismic Response of Precast Concrete
Buildings, Ph.D Dissertation,
Technical University
of Milan, December.
Priestley, M.J.N. (2002), Direct
Displacement-Based Design of Precast/Prestressed Concrete Buildings” PCI
Journal, Vol 47 No. 6, pp 66-78.
Priestley, M.J.N., Sritharan, S., Conley, J.
R. & Pampanin, S. (1999). Preliminary Results and Conclusions from the
PRESSS Five-story Precast Concrete Test-building, PCI Journal, Vol 44(6) 42-67.
Priestley, M.J.N. (1998) Displacement-Based
Approaches to Rational Limit States Design of New Structures, Keynote address
of the 11th European Conference on Earthquake Engineering, Paris, France.
Priestley, M. J. N. (1996). The PRESSS program
– Current status and proposed plans for phase III”, PCI Journal, 41(2), 22-40.
SEAOC Vision 2000 Committee, (1995).
Performance-Based Seismic Engineering Structural Engineers Association of California, Sacramento,
California.
ACI T1.2-03, (2003) Innovation Task group 1
and collaborators, Special Hybrid moment frames composed of discretely jointed
precast and post-tensioned concrete members (ACI T1.2-03) and commentary (ACI
T1.2R-03) American Concrete Institute Farmington Hills, MI.
Thomas, G.C., Buchanan, A.H. & Dean J.A.
(1993). The Structural Design of a Multi-storey Light Timber Frame Residential
Building, IPENZ Transactions, Vol. 19, No.1/CE. 35-41.
Buchanan, A.H. & Fairweather R.H. (1993).
Seismic Design of Glulam Structures, Bulletin of the New Zealand National Society for
Earthquake Engineering, Vol 26(4) 415-436.
Christopoulos, C., Filiatrault, A., Uang, C.M.
& Folz, B. (2002b). Post-tensioned Energy Dissipating Connections for
Moment Resisting Steel Frames, ASCE Jo. of Structural Engineering, Vol. 128(9)
1111-1120.
Christopoulos, C., Filiatrault, A. and Folz,
B. (2002a). Seismic response of self-centering hysteresis SD & F Systems,”
Earthquake Engineering and Structural Dynamics, Vol. 31, pp. 1131-1150.
Christopoulos, C. and Pampanin, S. (2004).
Towards performance-based design of MDOF structures with explicit consideration
on residual deformations, ISET Journal of Structural Engineering, Special Issue
on “Performance-Based Seismic Design”, paper 440.
EC8 (2003). Eurocode 8: Design of structures
for earthquake resistance. ECS, Brussels,
2003.
Deam, B. (1997). Seismic Design and Behaviour
of Multi-storey Plywood sheathed timber framed shear walls, Research Report No
97/3, Department of Civil Engineering, University of Canterbury.
fib, International Federation for Structural
Concrete, (2004). Seismic Design of Precast Concrete
Building Structures, Bulletin 27, Lausanne, 254 pp.
Hewes, J.T. & Priestley, M.J.N. (2001).
Experimental Testing of Unbonded Post-tensioned Precast Concrete Segmental
Bridge Columns, Proc. of the 6th Caltrans Seismic Research Workshop, Sacramento, California.
Halliday, M.A. & Buchanan, A.H. (1993).
Feasibility of Medium Rise Office Structures in Timber, IPENZ Transactions,
Vol. 19, No.1/CE. 13-20.
NZS 3101:2006. Standards New Zealand,
Design of Concrete Structures, Appendix B: Special Provisions for the Seismic
Design of Ductile Jointed Precast Concrete Structural Systems.
MacRae, G. A. and Kawashima, K. (1997).
Post-earthquake residual displacements of bilinear oscillators, Earthquake
Engineering and Structural Dynamics, 26, 701-716.
No comments:
Post a Comment