Analysis of Tall Structures for Different Stiffness Ratios of Columns to Shear Walls and Column Shortening

Authors

  • Charitha Rajashekar
  • Ravindra R., Jagadish B. Reddy

Abstract

Differential axial shortening in a structure causes axial force redistribution among columns and walls, and introduces additional forces in the horizontal members such as beams and slab. Hence, it needs to be considered in the design, especially for medium to high-rise buildings. The best way to illustrate differential column shortening is to conduct floor-by-floor analysis, generally known as construction sequence analysis. Commercial software ETABS is available for conducting sequential analysis. The probable axial shortening could be important for construction engineers and project managers as well. This study presents a set of guidelines so that the effect could be taken into account approximately the preliminary design stage and also during the construction phase. In this study, construction stage analysis considers the creep and shrinkage effects of a 50-story building consist of an exterior concrete frame and interior shear walls. The displacements of vertical members are evaluated and compared with the results from conventional analysis (Without construction stage).


Keywords: Column shortening, stiffness ratio, creep, p-delta analysis

Downloads

Published

2020-12-17

Issue

Vol. 4 No. 2 (2017)

Section

Research Article

License

Declaration and Copyright Transfer Form

(to be completed by authors)

I/ We, the undersigned author(s) of the submitted manuscript, hereby declare, that the above manuscript which is submitted for publication in the STM Journals(s), is not published already in part or whole (except in the form of abstract) in any journal or magazine for private or public circulation, and, is not under consideration of publication elsewhere.

  • I/We will not withdraw the manuscript after 1 week of submission as I have read the Author Guidelines and will adhere to the guidelines.
  • I/We Author(s ) have niether given nor will give this manuscript elsewhere for publishing after submitting in STM Journal(s).
  • I/ We have read the original version of the manuscript and am/ are responsible for the thought contents embodied in it. The work dealt in the manuscript is my/ our own, and my/ our individual contribution to this work is significant enough to qualify for authorship.
  •  I/We also agree to the authorship of the article in the following order:

Author’s name                                    

 

1. ________________

2. ________________

3. ________________

4. ________________

 

We  Author(s) tick this box and would request you to consider it as our signature as we agree to the terms of this Copyright Notice, which will apply to this submission if and when it is published by this journal.