2015 CSCE Annual Conference Regina - Building on our Growth Opportunities

2015 CSCE Annual Conference Regina - Building on our Growth Opportunities Conference


Title
Analytical Model to Determine Long Time Multipliers for Fully Cracked and Uncracked Sections

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Author(s)
Mr. Kyle Karschner, Penn State University
Dr. Andrew Scanlon, Penn State University (Presenter)
Abstract

~~by

Kyle Karschner1 and Andrew Scanlon2


Long- time multipliers are commonly used in design codes and specifications such as CSA A23.3 and ACI 318 to compute time-dependent deflections of reinforced concrete members. These multipliers are convenient for design due to their simplicity of application. However, as a result of their simplicity they do not account for many factors that influence time-dependent deflections. This paper presents an analytical method based on a time-stepping procedure to trace deformations in cracked and uncracked sections under sustained loads. A parametric study is conducted to assess the sensitivity of the solution to the various parameters involved and implications for design are discussed.

1. SGH, Boston, Massachusetts.

2. Contact author: Penn State University, axs21@psu.edu, 814 867 0151