A Proposed Innovative Confinement of Square Reinforced Concrete Columns for Ductility Improvement

10 Pages Posted: 3 Jan 2020 Last revised: 17 Mar 2020

See all articles by Machmoed Soerjandani

Machmoed Soerjandani

Universitas Wijaya Kusuma Surabaya

Tavio Tavio

Department of Civil Engineering,Institut Teknologi Sepuluh Nopember

IGP Raka

Department of Civil Engineering,Institut Teknologi Sepuluh Nopember

Date Written: January 2, 2020

Abstract

In the structural frame system, the concept that has become a reference is the concept of "strong columns weak beam". Each building structure system has the property of being deformed in the lateral direction, so the role of the column is very important compared to the beam, especially in resisting cyclic lateral loads. Several proposals have been made by previous researchers to improve column ductility by utilizing fine mesh, increasing reinforcement strength, various shapes of confinement, and even using different configurations of confinement systems. For this reason, the authors analyze the potential of these possibilities to determine the strengths, weaknesses, and opportunities to obtain the shape and configuration of the confinement system, which is expected to be better when compared to the current existing confinement system.

The results of the potential analysis carried out have obtained an initial hypothesis that the increase in strength and ductility depends on increasing the area of the concrete core by making an adaptable and compatible shape of confinement with columns to obtain an effective concrete core area, compact shape of confinement, avoiding the connection points at confinement in the corner area, reducing the curvature of the concrete core and utilizing interlocking systems to maintain the cohesiveness of the reinforcement system.

From the initial hypothesis, a rectangular confinement proposal emerged to adapt to the shape of the column and maximize the area of the concrete core, spiral-shaped to avoid breaking the reinforcing bar and the connection point in the confining angle and utilizing reinforcement bundling in the corner area to minimize the curvature of the concrete core and utilizing an interlocking system to maintain cohesiveness between the main confinement (concrete core) and second confinement (bundles).

Keywords: Confinement, Innovative, Reinforced Concrete, Rectangular Column

Suggested Citation

Soerjandani P., Machmoed and Tavio, Tavio and Raka, IGP, A Proposed Innovative Confinement of Square Reinforced Concrete Columns for Ductility Improvement (January 2, 2020). International Conference on Science, Technology & Environment (ICoSTE) 2019, Available at SSRN: https://ssrn.com/abstract=3512742 or http://dx.doi.org/10.2139/ssrn.3512742

Machmoed Soerjandani P. (Contact Author)

Universitas Wijaya Kusuma Surabaya ( email )

Indonesia
Surabaya
Indonesia

Tavio Tavio

Department of Civil Engineering,Institut Teknologi Sepuluh Nopember ( email )

Jalan Mulyorejo Tengah No. 69
Surabaya, ID East Java 60111
Indonesia

IGP Raka

Department of Civil Engineering,Institut Teknologi Sepuluh Nopember ( email )

Jalan Mulyorejo Tengah No. 69
Surabaya, ID East Java 60111
Indonesia

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