In today’s market, it is imperative to be knowledgeable and have an edge over the competition. ACI members have it…they are engaged, informed, and stay up to date by taking advantage of benefits that ACI membership provides them.
Read more about membership
Become an ACI Member
Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
ACI World Headquarters
38800 Country Club Dr.
Farmington Hills, MI
ACI Middle East Regional Office
Sheik Rashid Tower, 7th Floor
Dubai World Trade Center
Phone: +971 4 3097066
Feedback via Email
Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Modeling and Seismic Behavior of Nonductile Concrete Frame Structures and Retrofit Implications
Author(s): Richard SauseI
Publication: Special Publication
Appears on pages(s): 231-254
Keywords: ductility; earthquake-resistant structures; frames; reinforced concrete; renovating; Design
Abstract:A rational retrofit of a non-ductile RC frame structure requires an assessment of its seismic behavior as limited by the strength and ductility capacity of its critical regions. From this assessment, the critical regions can be prioritized for retrofit. This paper presents part of the research at Lehigh University that is investigating the seismic performance of non-ductile RC frame structures and developing retrofit strategies. The paper describes the design of 12-story and three-story prototype non-ductile RC frame structures, modeling of these structures for inelastic static analyses, their seismic behavior as obtained from these analyses, and the implications of this behavior on their retrofit. The seismic behavior of the prototype structures was controlled by the non-ductile behavior of their critical regions. Critical column end regions must be retrofit to increase the global ductility capacity. However, such a retrofit would not significantly increase the base shear capacity of the 12-story structure; pullout regions at the beam-column joints must be retrofit to increase the base shear capacity of this structure. Possible non-ductile behavior within the beams is not considered to be critical to the base shear or global ductility capacity of the prototypes. However, if the pullout regions are retrofit to increase their ultimate moment/rotation capacity, the other regions in the beams should be carefully evaluated.
Click here to become an online Journal subscriber