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A platform for research: civil engineering, architecture and urbanism
Partially loaded areas in reinforced concrete: Experimental campaign and model validation
https://orcid.org/0000-0003-1212-6121
https://orcid.org/0000-0001-8371-3863
https://orcid.org/0000-0002-8415-4896
Highlights Results from 62 tests on the bearing strength of concrete blocks are presented. Influence of several parameters is studied, including bar and fibre reinforcement. Modern measurement techniques gave valuable insight into the structural behaviour. Bearing capacity of reinforced blocks is higher than predicted by current standards. The proposed stress fields enable the design of more efficient structures.
Abstract This paper presents the results of a comprehensive experimental campaign investigating the structural behaviour of concrete blocks subjected to partial area loading. A total of 62 concrete blocks were loaded up to failure by applying a compressive load over a limited area. The campaign focused on plane cases of partial area loading, i.e. the load was applied over the (almost) entire block length and thus dispersed mainly in one direction. The test parameters included (i) the specimen geometry; (ii) the size of the loaded area; (iii) the concrete strength; (iv) the conventional reinforcement ratio, layout, and detailing; and (v) the steel fibre content. Modern measuring techniques were applied to gain insight into the crack development, the reinforcement activation, and the contact pressure distribution over the loaded area. The test results, together with experimental data found in the literature, substantiate the fundamental mechanical behaviour identified in previous theoretical studies by the authors. It is shown that the Dual-Wedge and Dual-Cone stress fields presented in the companion paper can accurately reproduce the influence of the investigated test parameters. Moreover, the bearing capacity predictions by these stress fields correlate significantly better with the experimental data than existing design rules implemented in current design codes.
Partially loaded areas in reinforced concrete: Experimental campaign and model validation
https://orcid.org/0000-0003-1212-6121
https://orcid.org/0000-0001-8371-3863
https://orcid.org/0000-0002-8415-4896
Highlights Results from 62 tests on the bearing strength of concrete blocks are presented. Influence of several parameters is studied, including bar and fibre reinforcement. Modern measurement techniques gave valuable insight into the structural behaviour. Bearing capacity of reinforced blocks is higher than predicted by current standards. The proposed stress fields enable the design of more efficient structures.
Abstract This paper presents the results of a comprehensive experimental campaign investigating the structural behaviour of concrete blocks subjected to partial area loading. A total of 62 concrete blocks were loaded up to failure by applying a compressive load over a limited area. The campaign focused on plane cases of partial area loading, i.e. the load was applied over the (almost) entire block length and thus dispersed mainly in one direction. The test parameters included (i) the specimen geometry; (ii) the size of the loaded area; (iii) the concrete strength; (iv) the conventional reinforcement ratio, layout, and detailing; and (v) the steel fibre content. Modern measuring techniques were applied to gain insight into the crack development, the reinforcement activation, and the contact pressure distribution over the loaded area. The test results, together with experimental data found in the literature, substantiate the fundamental mechanical behaviour identified in previous theoretical studies by the authors. It is shown that the Dual-Wedge and Dual-Cone stress fields presented in the companion paper can accurately reproduce the influence of the investigated test parameters. Moreover, the bearing capacity predictions by these stress fields correlate significantly better with the experimental data than existing design rules implemented in current design codes.
Partially loaded areas in reinforced concrete: Experimental campaign and model validation
https://orcid.org/0000-0003-1212-6121
https://orcid.org/0000-0001-8371-3863
https://orcid.org/0000-0002-8415-4896
Highlights Results from 62 tests on the bearing strength of concrete blocks are presented. Influence of several parameters is studied, including bar and fibre reinforcement. Modern measurement techniques gave valuable insight into the structural behaviour. Bearing capacity of reinforced blocks is higher than predicted by current standards. The proposed stress fields enable the design of more efficient structures.
Abstract This paper presents the results of a comprehensive experimental campaign investigating the structural behaviour of concrete blocks subjected to partial area loading. A total of 62 concrete blocks were loaded up to failure by applying a compressive load over a limited area. The campaign focused on plane cases of partial area loading, i.e. the load was applied over the (almost) entire block length and thus dispersed mainly in one direction. The test parameters included (i) the specimen geometry; (ii) the size of the loaded area; (iii) the concrete strength; (iv) the conventional reinforcement ratio, layout, and detailing; and (v) the steel fibre content. Modern measuring techniques were applied to gain insight into the crack development, the reinforcement activation, and the contact pressure distribution over the loaded area. The test results, together with experimental data found in the literature, substantiate the fundamental mechanical behaviour identified in previous theoretical studies by the authors. It is shown that the Dual-Wedge and Dual-Cone stress fields presented in the companion paper can accurately reproduce the influence of the investigated test parameters. Moreover, the bearing capacity predictions by these stress fields correlate significantly better with the experimental data than existing design rules implemented in current design codes.
Partially loaded areas in reinforced concrete: Experimental campaign and model validation
Markić, Tomislav (author) / Morger, Fabian (author) / Kaufmann, Walter (author)
Engineering Structures ; 273
2022-08-28
Article (Journal)
Electronic Resource
English
Partially loaded areas in reinforced concrete: Experimental campaign and model validation
| Elsevier | 2022
Partially loaded areas in reinforced concrete: Mechanical modelling
| Elsevier | 2022
| British Library Online Contents | 2015