Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
DEVELOPMENT OF DESIGN AID FOR SLENDER REINFORCED CONCRETE BEARING WALL
Non-rectangular shaped reinforced concrete members subjected to uniaxial or biaxial bending with axial compression are frequently used in different structures like tall buildings and bridge piers. This thesis is concerned with finite element modeling of axially loaded reinforced concrete L-shaped and C-shaped walls in both concentric and eccentric loading conditions to determine walls’ axial load carrying capacity. Finite element modelling is carried out by ABAQUS software with concrete damaged plasticity constitutive relation for concrete material. Concrete stress-strain relation for nonlinear analysis specified in EBCS EN 1992-1-1 2013 is used. Reinforcement steel is modelled up to plastic stage. Validation of the software is conducted by comparing empirical equation answers with analysis results (primary validation) and by comparing test results of RC column with that of analysis results (supportive validation) to insure the accuracy of the outcomes. The considered reinforced concrete member is pin ended with embedded constraint condition between concrete and reinforcement steel. To reduce convergence problem, rigid body constraint is used between the member and the reference point at which the load is applied. Axial load capacity of the wall for different loading condition is extracted from analysis. Then moment capacity is calculated by multiplying the axial load with eccentricity including mid height lateral deflection. The reduction of axial load capacity with increment of slenderness ratio is found to be observable. The axial stress variation with eccentricity is also significantly observed from the axial stress distribution. Finally smooth P-M interaction diagram of considered bearing walls are plotted for different slenderness ratio and steel ratio. Concrete grade of (fck=25MPa) and steel grade of (fy=420MPa) are used for modelling material in this thesis.
DEVELOPMENT OF DESIGN AID FOR SLENDER REINFORCED CONCRETE BEARING WALL
Non-rectangular shaped reinforced concrete members subjected to uniaxial or biaxial bending with axial compression are frequently used in different structures like tall buildings and bridge piers. This thesis is concerned with finite element modeling of axially loaded reinforced concrete L-shaped and C-shaped walls in both concentric and eccentric loading conditions to determine walls’ axial load carrying capacity. Finite element modelling is carried out by ABAQUS software with concrete damaged plasticity constitutive relation for concrete material. Concrete stress-strain relation for nonlinear analysis specified in EBCS EN 1992-1-1 2013 is used. Reinforcement steel is modelled up to plastic stage. Validation of the software is conducted by comparing empirical equation answers with analysis results (primary validation) and by comparing test results of RC column with that of analysis results (supportive validation) to insure the accuracy of the outcomes. The considered reinforced concrete member is pin ended with embedded constraint condition between concrete and reinforcement steel. To reduce convergence problem, rigid body constraint is used between the member and the reference point at which the load is applied. Axial load capacity of the wall for different loading condition is extracted from analysis. Then moment capacity is calculated by multiplying the axial load with eccentricity including mid height lateral deflection. The reduction of axial load capacity with increment of slenderness ratio is found to be observable. The axial stress variation with eccentricity is also significantly observed from the axial stress distribution. Finally smooth P-M interaction diagram of considered bearing walls are plotted for different slenderness ratio and steel ratio. Concrete grade of (fck=25MPa) and steel grade of (fy=420MPa) are used for modelling material in this thesis.
DEVELOPMENT OF DESIGN AID FOR SLENDER REINFORCED CONCRETE BEARING WALL
ANDUALEM DERESSE (Autor:in)
10.11.2018
doi:10.20372/nadre:1547549948.91
Hochschulschrift
Elektronische Ressource
Englisch
DDC:
690
Design of slender reinforced concrete frames
| UB Braunschweig | 1974
Design of slender reinforced concrete frames
| UB Braunschweig | 1973
Design of slender reinforced concrete frames
| TIBKAT | 1973
Design of slender reinforced concrete frames
| UB Braunschweig | 1974