Nonrectangular reinforced concrete shear walls are often used in building systems as a means of resisting lateral forces. A collaborative research effort was conducted to investigate the behavior of nonrectangular wall systems subjected to multi-directional loading. The study included unidirectional tests on three rectangular walls to examine the effects of longitudinal reinforcement anchorage. This paper mainly discusses issues encountered in the design of the prototype T-shaped wall from a six-story office building assigned to Seismic Design Category D, and some of the outcomes of the tests. Design issues included investigation of critical biaxial loading combinations, distribution of design forces among individual walls, and detailing of the wall to comply with ACI 318-02 Building Code Requirements for Structural Concrete . Test results confirmed the beneficial effects of eliminating lapped splices from plastic hinge regions, and the advantages of distributing vertical reinforcement, which include reduced shear lag and reduced crack widths in the wall section especially between the confined regions.
|Original language||English (US)|
|Title of host publication||American Concrete Institute, ACI Special Publication|
|Editors||Andrew W. Taylor, Kyuichi Maruyama|
|Publisher||American Concrete Institute|
|Number of pages||16|
|State||Published - 2017|
|Event||1st American Concrete Institute (ACI) and Japan Concrete Institute (JCI) Joint Seminar: Design of Concrete Structures Against Earthquake and Tsunami Disasters - Waimea, United States|
Duration: Jul 16 2014 → Jul 18 2014
|Name||American Concrete Institute, ACI Special Publication|
|Other||1st American Concrete Institute (ACI) and Japan Concrete Institute (JCI) Joint Seminar: Design of Concrete Structures Against Earthquake and Tsunami Disasters|
|Period||7/16/14 → 7/18/14|
Bibliographical noteFunding Information:
This work was provided by NSF grants CMS0324504 and CMS0324559. Opinions, findings, conclusions, and recommendations in this paper are those of the authors, and do not necessarily represent those of the sponsor.
© (2017) by American Concrete Institute. All rights reserved.
- Multi-directional loading
- Nonrectangular walls
- Reinforced concrete
- Seismic design