A Practical Compensation Method for Differential Column Shortenings in High-rise Reinforced Concrete Buildings

Authors

  • Mutlu Secer
    Affiliation

    Department of Civil Engineering, Faculty of Engineering and Architecture, Izmir Katip Celebi University, 35620, Izmir, Turkey

  • Amanullah Zamani
    Affiliation

    Department of Civil Engineering, Faculty of Engineering and Architecture, Izmir Katip Celebi University, 35620, Izmir, Turkey

  • Yalcin Isler ORCID
    Affiliation

    Department of Biomedical Engineering, Faculty of Engineering and Architecture, Izmir Katip Celebi University, 35620, Izmir, Turkey

https://doi.org/10.3311/PPci.16028

Abstract

High-rise reinforced concrete buildings have technical, economic and environmental advantages for high density development and they have become a distinctive feature for densely populated urban areas around the world. For this purpose, structural design of high-rise reinforced concrete buildings have become forward and particularly serviceability requirements gained more interest. Differential shortening of vertical members is one of the serviceability requirements; however, only a limited number of studies exist. In this study, a practical compensation method was proposed for the differential shortening of columns and shear walls in high-rise reinforced concrete buildings. In the proposed compensation method, vertical members were grouped and the total error was aimed to be minimized by penalizing the higher shortening differences in the groups to simplify the process of building construction. In order to validate the proposed method, a 32-storey high-rise building that was built in Izmir Turkey was investigated considering both the construction sequence and time-dependent effects as shrinkage and creep. Vertical shortening of columns and shear walls in the tower part of the building were calculated. Uniform-grouped compensation method and the proposed penalized errors compensation method with using L1-norm and L2-norm were applied for differential shortenings of columns and shear walls with considering different numbers of member groups. The magnitude of errors for each compensation method was presented and evaluated. Results of the numerical study reveal that the proposed penalized errors compensation method was capable of determining the compensation errors by minimizing the maximum errors efficiently.

Keywords:

compensation, high-rise building, differential shortening, time-dependent analysis, construction sequence, shrinkage, creep

Published Online

2020-11-04

How to Cite

Secer, M., Zamani, A., Isler, Y. “A Practical Compensation Method for Differential Column Shortenings in High-rise Reinforced Concrete Buildings”, Periodica Polytechnica Civil Engineering, 65(1), pp. 242–254, 2021. https://doi.org/10.3311/PPci.16028

Issue

Section

Research Article