LOAD-BEARING CAPACITY OF CONCRETE-INFILLED DOUBLE STEEL CORRUGATED-PLATE
WALLS WITH T-SECTION UNDER COMBINED AXIAL COMPRESSION AND BENDING MOMENT
Yan-Lin Guo 1, Meng-Zheng Wang 1*, Jing-Shen Zhu 1 and Xiao Yang 1
1 Department of Civil Engineering, Tsinghua University, Beijing, China
This paper presents a new type of composite walls, namely concrete-infilled double steel corrugated-plate walls (CDSCWs), and investigates its load-bearing capacity. A CDSCW is composed of a wall element and vertical boundary elements, where the wall element is formed through interconnecting two steel corrugated-plates by bolts and infilled with concrete, and the vertical boundary elements are imposed at both sides of the wall element. This paper investigates the load-bearing capacity of CDSCWs with T-section (T-CDSCWs) under combined axial compression and bending moment using finite element method (FEM) and theoretical analysis. It is found that when the flange wall is in compression, bending moment capacity increases at first and decreases then as axial compression increases; when the flange wall is in tension caused by bending moment, there is a strong negative linear correlation between bending moment capacity and axial compression. Design formulas for estimating the load-bearing capacity of the T-CDSCW are recommended based on the assumption of full-section plasticity and provide a theoretical basis for the strength design of the T-CDSCW.
Composite wall; Steel corrugated-plate; Load-bearing capacity; T-section