scispace - formally typeset
Search or ask a question
Journal ArticleDOI

Time-Dependent Strains in Axially Loaded Reinforced Concrete Columns

01 Aug 2020-Journal of Engineering Mechanics-asce (American Society of Civil Engineers (ASCE))-Vol. 146, Iss: 8, pp 04020076
TL;DR: In this article, an exact method for estimating the time-dependent strain in reinforced concrete (RC) members is presented, which can be used to estimate the time dependence of reinforced concrete members.
Abstract: Time-dependent strains in reinforced concrete (RC) members are usually estimated using approximate algebraic methods. This paper presents an exact method for estimating the time-dependent s...
Citations
More filters
Journal ArticleDOI
TL;DR: In this article, a numerical model was proposed for calculating the long-term deformation of STCRC stub columns based on the cross-sectional analysis method and the step-by-step method, and was benchmarked against the available test results.

11 citations

Journal ArticleDOI
TL;DR: In this paper , optimized shape functions have been used in Rayleigh method to determine the critical buckling load and the fundamental natural frequency of non-prismatic steel-reinforced slender concrete columns.
Abstract: In this paper, optimized shape functions have been used in Rayleigh method to determine the critical buckling load and the fundamental natural frequency of non-prismatic steel-reinforced slender concrete columns. A range of admissible shape functions describing the mode shape in buckling as well as for the fundamental natural frequency of the column are considered and then an optimization strategy is developed to arrive at the optimum shape function. The results obtained from the present method based on the implementation of Rayleigh method through the concept of generalized coordinates are verified and validated by the finite element method. The application of the theory is demonstrated by two illustrative examples, both of which are steel-reinforced concrete towers that are representative of practical structures. Of particular significance is the duality between the free vibration and buckling problems which is captured and fruitfully exploited in the analysis. The effect of an additional mass located at the top of the tower is included in the investigation. Additionally, the impact of the creep behavior of the towers on results due to continuing lapse of time is critically examined and assessed. Finally, significant conclusions are drawn following the discussion of results.

3 citations

Journal ArticleDOI
TL;DR: In this article , a reliable analysis method was proposed and validated by the available test results, which showed that the steel tube can contribute up to 12.6 % of axial stiffness of the composite columns, which is different from that predicted based on plane section assumption.

1 citations