A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
DEM analysis of masonry hemispherical domes externally reinforced with metal bars
Highlights Simulations with 3DEC were done to find the optimal position of single metal bar placed on the extrados of masonry domes. Domes were loaded with self-weight and quasi-static outwards support displacements. Boundary conditions strongly influence the optimal reinforcement location. Axial stiffness of the single metal bar affects the optimal location of the reinforcement. The optimal location of the reinforcement is at the base when support displacement is considered.
Abstract A hemispherical dome without reinforcement typically shows orange-slice cracks under self-weight. In reality, externally applied reinforcement is commonly used to strengthen domes. This research applies the discrete element method to simulate hemispherical domes reinforced with a single horizontal steel or iron bar around their extrados. It focuses on finding the optimal location of the reinforcement under self-weight and outwards support displacement. The optimal location is defined with the help of the horizontal to vertical reaction ratio at the base of the dome. This research also helps to understand the difference between applying the reinforcement during construction, or after some meridional cracks already occurred. This study found that the cross-section areas of the reinforcement and the boundary conditions strongly influence the reinforcement optimal location. Cohesion of mortar joints has a significant influence on the efficiency of the applied reinforcement. The optimal location of the reinforcement for the dome with fixed support is different depending on whether only self-weight is considered, or the supports move outwards. The thickness-to-span ratio also influences the optimal location and the efficiency of the reinforcement.
DEM analysis of masonry hemispherical domes externally reinforced with metal bars
Highlights Simulations with 3DEC were done to find the optimal position of single metal bar placed on the extrados of masonry domes. Domes were loaded with self-weight and quasi-static outwards support displacements. Boundary conditions strongly influence the optimal reinforcement location. Axial stiffness of the single metal bar affects the optimal location of the reinforcement. The optimal location of the reinforcement is at the base when support displacement is considered.
Abstract A hemispherical dome without reinforcement typically shows orange-slice cracks under self-weight. In reality, externally applied reinforcement is commonly used to strengthen domes. This research applies the discrete element method to simulate hemispherical domes reinforced with a single horizontal steel or iron bar around their extrados. It focuses on finding the optimal location of the reinforcement under self-weight and outwards support displacement. The optimal location is defined with the help of the horizontal to vertical reaction ratio at the base of the dome. This research also helps to understand the difference between applying the reinforcement during construction, or after some meridional cracks already occurred. This study found that the cross-section areas of the reinforcement and the boundary conditions strongly influence the reinforcement optimal location. Cohesion of mortar joints has a significant influence on the efficiency of the applied reinforcement. The optimal location of the reinforcement for the dome with fixed support is different depending on whether only self-weight is considered, or the supports move outwards. The thickness-to-span ratio also influences the optimal location and the efficiency of the reinforcement.
DEM analysis of masonry hemispherical domes externally reinforced with metal bars
Chen, Shipeng (author) / Bagi, Katalin (author)
Engineering Structures ; 291
2023-06-13
Article (Journal)
Electronic Resource
English
| Springer Verlag | 2016
| Engineering Index Backfile | 1958
Limit analysis of masonry domes
| British Library Online Contents | 2003
Limit Analysis of Masonry Domes
| British Library Conference Proceedings | 1998