Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Local Bond Stress-Slip Relationships of Deformed Bars Under Generalized Excitations: Experimental Results and Analytical Model
This report covers integrated experimental and analytical investigations that permit predicting analytically the local bond stress-slip relationship of deformed reinforcing bars subjected to generalized excitations, such as may occur during the response of reinforced concrete (R/C) structures to severe earthquake ground motions. Some 125 pull-out specimens were tested. Each one of these specimens simulated the confined region of a beam-column joint. Only a short length (five times the bar diameter) of a Grade 60 deformed reinforcing bar was embedded in confined concrete. The tests were run under displacement control by subjecting one bar end to the required force needed to induce the desired slip which was measured at the unloaded bar end. The influence of (1) loading history, (2) confining reinforcement, (3) bar diameter and deformation pattern, (4) concrete compressive strength, (5) clear bar spacing, (6) transverse pressure, and (7) loading rate on the bond stress-slip relationship was studied. Based on the experimental results, a relatively simple analytical model for the local bond stress-slip relationship of deformed bars embedded in confined concrete is developed. The main assumption is that bond deterioration during generalized excitations depends on the damage experienced by the concrete, which, in turn, is a function of the total dissipated energy.
Local Bond Stress-Slip Relationships of Deformed Bars Under Generalized Excitations: Experimental Results and Analytical Model
This report covers integrated experimental and analytical investigations that permit predicting analytically the local bond stress-slip relationship of deformed reinforcing bars subjected to generalized excitations, such as may occur during the response of reinforced concrete (R/C) structures to severe earthquake ground motions. Some 125 pull-out specimens were tested. Each one of these specimens simulated the confined region of a beam-column joint. Only a short length (five times the bar diameter) of a Grade 60 deformed reinforcing bar was embedded in confined concrete. The tests were run under displacement control by subjecting one bar end to the required force needed to induce the desired slip which was measured at the unloaded bar end. The influence of (1) loading history, (2) confining reinforcement, (3) bar diameter and deformation pattern, (4) concrete compressive strength, (5) clear bar spacing, (6) transverse pressure, and (7) loading rate on the bond stress-slip relationship was studied. Based on the experimental results, a relatively simple analytical model for the local bond stress-slip relationship of deformed bars embedded in confined concrete is developed. The main assumption is that bond deterioration during generalized excitations depends on the damage experienced by the concrete, which, in turn, is a function of the total dissipated energy.
Local Bond Stress-Slip Relationships of Deformed Bars Under Generalized Excitations: Experimental Results and Analytical Model
R. Eligehausen (Autor:in) / E. P. Popov (Autor:in) / V. V. Bertero (Autor:in)
1983
190 pages
Report
Keine Angabe
Englisch
Structural Analyses , Dynamic structural analysis , Reinforcing materials , Reinforced concrete , Deterioration , Deformation , Bars , Stress(Mechanics) , Loads(Forces) , Dissimilar materials bonding , Mechanical hystereses , Excitation , Mathematical modeling , Beams(Supports) , Columns(Supports) , Deformation(Elastic) , Earthquake engineering , Slip(Mechanical)
Analytical model for deformed bar bond under generalized excitations
| DataCite | 1981
Analytical model for the bond stress-slip relationship of deformed bars in normal strength concrete
| British Library Online Contents | 2019