Reinforced Concrete Shear Walls

  • Liu, Lunying (Project Participant)
  • Nielsen, Mogens Peter (Project Manager)
  • Hansen, Lars Pilegaard (Project Participant)

Project Details

Description

For a long time it was believed that reinforced concrete frame structures were superior to other reinforced concrete structures regarding behavior in seismic zones. For instance most high rise buildings in Japan are frame structures either in steel, in reinforced concrete or in composite materials.
However, it has turned out that structures stabilized by shear walls in many respects have fulfilled the conditions in earthquake regions better than framed structures. In recent years, therefore a large amount of research has been conducted on shear walls throughout the world. This research includes theory development as well as experimental research.
Since Denmark has a long tradition in formulating failure theories for structures and structural elements based on the theory of plasticity, it was felt natural to investigate the capabilities of these theories to predict the behavior of shear walls.
The known solutions are not sufficient for that purpose. In the project new solutions especially suited for applications on shear walls are developed. These solutions are based on lower bound as well as upper bound solutions.
To predict the deflections of a structure under earthquake load it is attempted to use as a basis the stress field at the ultimate load and minimize the complementary elastic energy for this stress field.
Very good agreement has been found between numerous tests and calculation regarding the ultimate load. The tests cover concrete compressive strengths up to 120 MPa and yield strengths of reinforcement up to 1400 MPa.
The project is closely connected to the project "Precast Concrete Structures in Earthquake Regions".
StatusFinished
Effective start/end date01/04/199431/12/1998

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