KIP-RC construction method with RC columns and steel beams

KIP-RC construction method with RC columns and steel beams

Building use

Other

Country/Region

Japan

Overview

The KIP-RC construction method is a composite structure in which the columns are made of reinforced concrete (RC) and the beams are made of steel (S). The purpose of the KIP-RC construction method is as follows:
1) Improved seismic resistance of columns: While RC columns generally have good seismic resistance, their strength may be limited during earthquakes. By incorporating steel beams, the seismic resistance of the columns can be enhanced.
2) Structural light-weighting: Using steel beams reduces the overall weight of the structure. This allows for improved seismic response characteristics and performance by reducing the overall mass of the building.
3) Increased flexibility of the building: Incorporating steel beams enhances the flexibility of the structure. This enables better control of the building’s behavior during earthquakes, minimizing potential damage.
4) Construction efficiency: The combination of RC columns and steel beams improves construction efficiency. The lightweight structure reduces the amount of construction materials required. It also contributes to shorter construction periods and cost reductions.

Basic information (construction date, number of stories, gross floor area, adopted design code, engineer(s), Contractor(s), etc.)

Construction date: 2020
Number of stories: 13
Gross floor area: 5,716m2
Adopted design code: Japan Building Standard act
Engineer(s): KAJIMA DESIGN
Contractor(s): Kajima Corp.

Issue and/or innovation

1) Design and construction techniques for joints In the KIP-RC construction method, the design and construction techniques for the joints between RC columns and steel beams pose a challenge. Proper design and high-quality construction are essential to ensure the strength, rigidity, and seismic performance of these joints.
2) Improved construction efficiency and cost reduction. The KIP-RC construction method offers innovation through improved construction efficiency and cost reduction.

Reason for composite solution

By using the KIP-RC construction method, it is possible to achieve high seismic performance, reduced weight and flexibility, improved construction efficiency, and high quality and durability.

Technical details

1) Testing and experiments: Experiments and tests were conducted to evaluate the performance of the column-beam combination in the KIP-RC construction method. Through the evaluation of seismic performance and observation of behavior, the excellent characteristics of the method were confirmed.
2) Development of construction techniques: The development of construction techniques in the KIP-RC construction method was also carried out. The jointing methods and construction procedures for RC columns and steel beams were examined, and techniques were developed to improve efficiency and quality during construction.

Impact or effectiveness

Project cost reduction

References / Technical Papers Content

Kubota, J., Hattri, Y., Fukuda, T.and Fukumoto, T. “Study on Steel Beam-Reinforced Concrete Column Connections using High Strength Reinforced Concrete, Part-1Outline and Experimental Result of Subassemblage Test, Part-2 Analysis and Strength Evaluation”, Summaries of technical papers of annual meeting (Transaction of AIJ) , pp.1405-1409, 2012 (in Japanese)
Hattori, Y., Kubota, J., Nimura, A., Yamamoto, Y., Hinata, D., and Fuchigami, Y. “Study on Steel Beam-Reinforced Concrete Column L-Shape Connections, Part-1Outline of the Test, Part-2 Analysis and Evaluation”, Summaries of technical papers of annual meeting (Transaction of AIJ) , pp.1047-1450, 2019 (in Japanese)