Journal article
Impact of Axial Load on the Seismic Response of Rectangular Walls
Journal of structural engineering (New York, N.Y.), Vol.144(8), p.4018124
08/01/2018
Handle:
https://hdl.handle.net/2376/109390
Abstract
AbstractExperimental testing was conducted on four large-scale, flexure-yielding walls with rectangular cross sections to investigate the impact of imposed axial load ratio (10, 14, and 20% of axial compression capacity) and transverse reinforcement detailing on the seismic performance, including damage and deformability. Variations in detailing included the inclusion or exclusion of crossties on web longitudinal reinforcement, the confined length of the boundary element, and the effectiveness of using full hoops versus 180–180° crossties in boundary elements. Failure was characterized by simultaneous crushing of the boundary element core concrete and buckling of the longitudinal reinforcement, except for one wall that failed by out-of-plane instability of the wall boundary element. The plastic rotations at lateral strength loss of 20% were on average 3.3, 2.7, and 2.1% for walls with axial load ratios of 0.1, 0.14, and 0.2, respectively. These rotations exceeded the codified limits used for assessment of structures in the United States but were below the codified limits used for design in New Zealand for axial load ratios exceeding 10%. A model for determining the plastic rotation capacity of rectangular walls as a function of the axial load is proposed.
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Details
- Title
- Impact of Axial Load on the Seismic Response of Rectangular Walls
- Creators
- Alex V Shegay - Univ. of Auckland Ph.D. Student, Dept. of Civil and Environmental Engineering, , Auckland 1023, (corresponding author). EmailChristopher J Motter - Washington State Univ. Assistant Professor, Dept. of Civil and Environmental Engineering, , Pullman, WA 99164Kenneth J Elwood - Univ. of Auckland Professor, Dept. of Civil and Environmental Engineering, , Auckland 1023Richard S Henry - Univ. of Auckland Senior Lecturer, Dept. of Civil and Environmental Engineering, , Auckland 1023Dawn E Lehman - Univ. of Washington Professor, Dept. of Civil and Environmental Engineering, , Seattle, WA 98195-2700Laura N Lowes - Univ. of Washington Professor, Dept. of Civil and Environmental Engineering, , Seattle, WA 98195-2700
- Publication Details
- Journal of structural engineering (New York, N.Y.), Vol.144(8), p.4018124
- Academic Unit
- Civil and Environmental Engineering, Department of
- Publisher
- American Society of Civil Engineers
- Identifiers
- 99900547198301842
- Language
- English
- Resource Type
- Journal article