Abstract

For better structural performance and constructability, a new composite core wall system using steel plate columns at the corners of the core section was developed. When compared to traditional RC core walls, the use of the corner steel plate columns provided better structural capacity, which allows less wall thickness and re-bars. Further, due to such effects, the construction cost and time can be reduced despite the use of steel plate columns.

Development Effect

(1) Less use of re-bars and Less wall thickness → Better constructability and Larger architectural area

(2) Better construction quality (verticality, differential shortening)

(3) Better connectivity to horizontal members  → Shorter construction time

(4) Advatageous to design openings (in core walls)

Research Contents

(1) Proposition of geometric details of steel plate walls and limitations

(2) Structural tests on the proposed unit walls

(3) Application and analytical study on 3-dimensional tall buildings

(4) Evalulation of manufacturing/installation/construction

(5) Guide line for wall design

(6) Field application

Experimental study

Cyclic lateral load test of CSRC (Corner Steel-Reinforced Concrete) wall

Test purpose

Investigation of flexural/shear strength and failure modes

Applicability of existing design methods

Contribution of corner steel plates to shear strength of wall

Test results

Greater initial stiffness () and energy dissipaction capacity in CSRC wall specimens

Concentration of re-bar in section corner is unpractical due to the limits of diameter and spacing