Numerical modelling of concrete bearing strength for different heights of concrete blocks

10th Asia Pacific Structural Engineering and Construction Conference 2018

工业技术（总论）

Yahya, N.A.^1^3 ; Dhanasekar, M.^3 ; Md Zain, M.R.^1 ; Oh, C.L.^1 ; Lee, S.W.^2

Faculty of Civil Engineering, Universiti Teknologi MARA, Selangor, Shah Alam

40450, Malaysia^1

Faculty of Civil Engineering, Universiti Teknologi MARA, Johor, Pasir Gudang Campus, Masai, Johor

81750, Malaysia^2

Science and Engineering Faculty, Civil Engineering and Built Environment, Gardens Campus Point, Queensland University of Technology, QLD

4001, Australia^3

关键词: Bearing strengths;    Compressive strength of concrete;    Confinement effects;    Design characteristics;    Different heights;    Structural ductility;    Structural support;    Three dimensional finite element model;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/513/1/012031/pdf
DOI  :  10.1088/1757-899X/513/1/012031

学科分类：工业工程学

来源: IOP

【 摘 要 】

Bearing strength of concrete is one of important design characteristics in transmit the bearing force in structural supports such as column corbel, bridge bearing system, concrete connection, anchorage in post-tension members and other types of structure supports. Concrete bearing strength is depending on ratio of unloaded-to-loaded area and compressive strength of concrete. However, the effect of concrete block height on bearing strength of concrete is not included. Hence, the effect of different heights on concrete bearing strength were investigated using numerical modelling. The three-dimensional finite element model (FEM) for nonlinear analysis of concrete bearing were developed and analyzed in ABAQUS/Explicit. The FE models were validated based on pre-existing experimental results. The confinement effect and structural ductility of concrete blocks with different heights were evaluated. The FE results indicate that the level of internal confinement and the structural ductility of concrete blocks were affected significantly as increasing of concrete block heights. The bearing force for the concrete block with 150mm high was significantly dropped to 55% as compare to control specimen of 50mm high.