Analysis and design of a base-isolated reinforced concrete frame building
DOI:
https://doi.org/10.5459/bnzsee.11.4.245-254Abstract
The paper describes the dynamic and static analyses and design of a four storey ductile reinforced concrete frame structure isolated from the foundations by elastomeric bearings incorporating lead energy dampers. Results from inelastic, time-history analyses for the isolated and non-isolated structure are compared for several input earthquake motions. The benefits of energy dampers in reducing the isolated building's response (shears, plastic hinge demands and interstorey drifts) are detailed. Differences from conventional ductile design and detailing as well as design recommendations are included.
References
Derham, C. J. and Learoyd, S. B. B., "The Use of Natural Rubber Foundation Springs for Earthquake Protection", 4th Southeast Asian Conference on Soil Engineering, Kuala Lumpur, Malaysia, April 1975.
Derham, C. J., Wotton, L. R. and Learoyd, S.B. B., "Vibration Isolation and Earthquake Protection of Buildings by Natural Rubber Mountings", N. R. Technology, Vol. 6, Part 2 1975, pp 21-33.
Lindley, P. B., "Engineering Design with Natural Rubber", N R Technical Bulletin, 3rd Ed, Natural Producers Research Association, London, 1970.
Skinner, R. I., Kelly, J. M., and Heine, A. J., "Energy Absorption Devices for Earthquake Resistant Structures", Proceedings 5th World Conference in Earthquake Engineering, Paper 370, Session 8C, Rome, Italy, May 1973.
Kelly, J. M., Skinner, R. I. and Heine, A. J., "Mechanisms of Energy Absorption in Special Devices for Use in Earthquake Resistant Structures", Bull. N.Z. Society of Earthquake Engineering, Vol. 5, No. 3, Sept. 1972, pp 63-88. DOI: https://doi.org/10.5459/bnzsee.5.3.63-88
Skinner, R. I., Beck, J. L. and Bycroft, G. N., "A Practical System for Isolating Structures from Earthquake Attack", Int. Journal Earthquake Engineering Structural Dynamics, Vol. 3, No. 3, 1975. DOI: https://doi.org/10.1002/eqe.4290030308
Robinson, W. H. and Greenbank, L. R., "An Extrusion Energy Absorber Suitable for the Protection of Structures During an Earthquake", Earthquake Engineering and Structural Dynamics, Vol. 4, pp 215-259, 1976. DOI: https://doi.org/10.1002/eqe.4290040306
Derham, C. F., "Fire Resistance of Steel-Laminated Natural Rubber Bearings", NR Technology, Vol. 7, Part 2, 1976.
Robinson, W. H. and Tucker, A. G., "A Lead-Rubber Shear Damper", Bull. N.Z. Nat. Soc. for Earthquake Engineering, Vol. 10, No. 3, September, 1977, pp 151-153. DOI: https://doi.org/10.5459/bnzsee.10.3.151-153
Skinner, R. I. and McVerry, G. H., "Base Isolators for Increased Earthquake Resistance of Buildings", Bull. N.Z. Nat. Soc. for Earthquake Engineering, Vol. 8, No. 2, 1975, pp. 93-101. DOI: https://doi.org/10.5459/bnzsee.8.2.93-101
Standards Association of Australia, AS1523-1976, "Elastomeric Bearings for Use in Structures".
Jennings, P. C., Housner, G. W. and Tsai, N. C., "Simulated Earthquake Motion", Earthquake Engineering Laboratory, California Institute of Technology, 1968.
Kanaan, A. E. and Powell, G. H., "DRAIN-2D, A General Purpose Computer Program for Dynamic Analysis of Inelastic Plane Structures", Earthquake Engineering Research Centre, University of California, Berkeley, September 1973.
N.Z. Standard, NZS 4203:1976, "Code of Practice for General Structural Design and Design Loadings for Buildings".
Logcher, R. D. et al, "ACES STRUDL-II: The Structural Design Language Engineering". Massachusetts Institute of Technology, Cambridge, Mass, November 1968.
American Concrete Institute, "Building Code Requirements for Reinforced Concrete (ACI 318-71)", Detroit, Michigan.
Edmonds, F. D. and Wood, J. H., "Testing of Two Reinforced Concrete Beam Column Assemblies Under Simulated Seismic Loading - Second Series", MWD Central Laboratories Report 5-77/5 to be published.
Tyler, R. G. , "Dynamic Tests on Laminated Rubber Bearings", Bull. N.Z. National Society for Earthquake Engineering, Vol. 10, No. 3, Sept. 1977, pp 143-150. DOI: https://doi.org/10.5459/bnzsee.10.3.143-150
Ministry of Transport, London, "Provisional Rules for the Use of Rubber Bearings in Highway Bridges", 1962.
Priestley, M. J. N., Crosbie, R. L. and Carr, A. J., "Seismic Forces in Base-Isolated Masonry Structures", Bull. N.Z. National Society for Earthquake Engineering, Vol. 10, No. 2, June 1977, pp 55-68. DOI: https://doi.org/10.5459/bnzsee.10.2.55-68
Paulay, T., "Section G: Columns - Evaluation of Actions", Bulletin of the N.Z. National Society for Earthquake Engineering, Vol. 10, No. 2, June 1977, pp 85-94. DOI: https://doi.org/10.5459/bnzsee.10.2.85-94
