DSpace
 

iRepository at Perpustakaan UniMAP >
Professional Associations >
IEM Journal >

Please use this identifier to cite or link to this item: http://dspace.unimap.edu.my:80/dspace/handle/123456789/13567

Title: Dynamic response of slender/thin reinforced precast concrete walls using shaking table
Authors: Nor Hayati, Abdul Hamid
Iwan, Surdano
Keywords: Displacement compatibility;Earthquake excitation;Shaking table;Shear-buckling;Strut-and-tie model
Issue Date: Sep-2006
Publisher: The Institution of Engineers, Malaysia
Citation: The Journal of the Institution of Engineers, Malaysia, vol. 67(3), 2006, pages 18-25
Abstract: Two geometrically identical three-eight full scale of thin/slender precast wall panels constructed with different base block connections are tested under several earthquake excitations using shaking table. Specimen 1 is designed with a high longitudinal reinforcement ratio with a fixed-base conventional monolithic connection. Specimen 2 is designed with one-half of longitudinal reinforcement ratio Specimen 1 with a rocking-base connection. Both of the walls are designed to carry gravity loading of 34kN and a 50kN supplementary inertia mass is seated on a separate frame at a pin-based connection to represent the initial impulse from earthquake. A shaking table is used to imitate the selected past earthquake records. Specimen 1 is tested under the Taft earthquake excitation with Peak Ground Acceleration (PGA)=0.2g, El Centro (PGA=0.4g) and Kobe (PGA=0.8g), while Specimen 2 undergoes Taft (PGA=0.2g) and El Centro (PGA=0.4g). The dynamic response of Specimen 1 is significantly influenced by its tendency towards permanent out-of-plane deformation. The experimental result shows that Specimen 1 collapsed with a maximum in-plane displacement of 90mm at 5.2 second. Specimen 2 experienced horizontal cracks at bottom one third of the wall. The surface cracks became wider during 0.4g PGA El Centro motion and a large ductility demanded was localised over a very short plastic hinge zone (PHZ). The specimen gradually collapsed due to tensile fracture of the longitudinal starter bars within the grouted zone. This research demonstrates that thin/slender precast wall panel with an excessive longitudinal reinforcement bars is not stable with height to thickness ratio of 60:1 subjected to strong ground shaking. A high ratio of longitudinal reinforcement in walls can generate large in-plane diagonal compressive strut leading to out-ofplane buckling behaviour.
Description: Link to publisher's homepage at http://www.myiem.org.my/
URI: http://myiem.org.my/content/iem_journal_2006-177.aspx
http://hdl.handle.net/123456789/13567
ISSN: 0126-513X
Appears in Collections:IEM Journal

Files in This Item:

File Description SizeFormat
018-025_dynamic response.pdf.pdf1.25 MBAdobe PDFView/Open
View Statistics

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! Perpustakaan Tuanku syed Faizuddin Putra, Kampus Pauh Putra, Universiti Malaysia Perlis, 02600, Arau Perlis
TEL: +604-9885420 | FAX: +604-9885405 | EMAIL: rujukan@unimap.edu.my Feedback