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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: Time‑Dependent Deformations of Eccentrically Loaded Reinforced Concrete Columns
Author(s): Tae‑Sung Eom, Chang‑Soo Kim, Xin Zhang and Jae‑Yo Kim
Appears on pages(s):
Keywords: long-term deformation, sustained load, eccentric loading, long-term curvature, high-rise building, columns, reinforced concrete
Abstract:If reinforced concrete columns and walls in high-rise buildings are subjected to axial load for a sustained duration,
long-term lateral deformation (or curvature) as well as axial shortening increase over time due to the creep and
shrinkage of concrete. In the present study, sustained load tests were performed to evaluate the time-dependent
axial shortening and lateral displacement occurring in eccentrically loaded columns. A test set-up using post-tensioning steel rods was introduced for the sustained loading with or without eccentricity. The test results showed that the
lateral displacement as well as the axial shortening increased over the sustained duration but the increasing rate of
the long-term deformations rapidly decreased with increasing time. The time-dependent axial shortening and lateral
displacement increasing with time were predicted by using the age-adjusted effective modulus method based on
the creep and shrinkage models of ACI 209. The predictions agreed well with the test results.
IJCSM, International Partner Access.
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