| Title |
Column Shortening Analysis of Tall Buildings for Design of Horizontal Members |
| Authors |
Kim Han-Soo ; Jeong Se-Hun ; Shin Seung-Hak |
| Keywords |
Column Shortening ; Long-Term Analysis ; Frame Analysis ; Initial Strain Load ; Tall Building |
| Abstract |
An improved column shortening analysis method which can be used in design phase of horizontal members has been proposed. The proposed analysis method consists of two stages, construction sequence column analysis and completion phase frame analysis. It can consider all the factors that affect the column shortening by separating in the two analysis stages. Column shortenings of 70-story reinforced concrete building were investigated as a numerical example. It is shown that this analysis method gives shortenings quite similar to the results by the accurate but complicated method. If you use this analysis method with the effective elastic modulus by EMM or AEMM, you can get more accurate internal forces which are less close than deformations when the normal modulus was used. This analysis method is also evaluated with CEB model and ACI model and the method is shown to be valid regardless of the concrete models. |