Inicio  /  Infrastructures  /  Vol: 9 Par: 1 (2024)  /  Artículo
ARTÍCULO
TITULO

Exploring the Cyclic Behaviour of URM Walls with and without Damp-Proof Course (DPC) Membranes through Discrete Element Method

Bora Pulatsu    
Rhea Wilson    
Jose V. Lemos and Neboj?a Mojsilovic    

Resumen

Unreinforced masonry (URM) walls are common load-bearing structural elements in most existing buildings, consisting of masonry units (bricks) and mortar joints. They indicate a highly nonlinear and complex behaviour when subjected to combined compression?shear loading influenced by different factors, such as pre-compression load and boundary conditions, among many others, which makes predicting their structural response challenging. To this end, the present study offers a discontinuum-based modelling strategy based on the discrete element method (DEM) to investigate the in-plane cyclic response of URM panels under different vertical pressures with and without a damp-proof course (DPC) membrane. The adopted modelling strategy represents URM walls as a group of discrete rigid block systems interacting along their boundaries through the contact points. A novel contact constitutive model addressing the elasto-softening stress?displacement behaviour of unit?mortar interfaces and the associated stiffness degradation in tension?compression regimes is adopted within the implemented discontinuum-based modelling framework. The proposed modelling strategy is validated by comparing a recent experimental campaign where the essential data regarding geometrical features, material properties and loading histories are obtained. The results show that while the proposed computational modelling strategy can accurately capture the hysteric response of URM walls without a DPC membrane, it may underestimate the load-carrying capacity of URM walls with a DPC membrane.

 Artículos similares

       
 
Nuno Monteiro Azevedo, Fernando F. S. Pinho, Ildi Cismasiu and Murilo Souza    
To predict the structural behaviour of ancient stone masonry walls is still a challenging task due to their strong heterogeneity. A rubble-stone masonry modeling methodology using a 2D particle model (2D-PM), based on the discrete element method is propo... ver más
Revista: Buildings

 
Hadee Mohammed Najm, Amer M. Ibrahim, Mohanad Muayad Sabri, Amer Hassan, Samadhan Morkhade, Nuha S. Mashaan, Moutaz Mustafa A. Eldirderi and Khaled Mohamed Khedher    
In recent years, steel-concrete composite shear walls have been widely used in enormous high-rise buildings. Due to their high strength and ductility, enhanced stiffness, stable cycle characteristics and large energy absorption, such walls can be adopted... ver más
Revista: Buildings

 
André Furtado, Hugo Rodrigues and António Arêde    
The seismic behavior of the infill masonry infill walls has a significant impact on the global response of reinforced concrete frame structures. One factor influencing its behavior is the existence of openings in the walls, such as doors and windows, whi... ver más
Revista: Buildings

 
Arsalan Majlesi, Hamid Asadi-Ghoozhdi, Omid Bamshad, Reza Attarnejad, Amir R. Masoodi and Mehdi Ghassemieh    
Steel plate shear walls usually do not satisfy the strong-column weak-beam design criteria, leading to larger column sections. On the other hand, rigid frame structures are typically constructed in low-rise to mid-rise buildings built in locations prone ... ver más
Revista: Buildings

 
Nikolai A. Voinov, Alexander S. Frolov, Anastasiya V. Bogatkova and Denis A. Zemtsov    
This paper presents and patents new profiled- and annular-channel tangential swirlers with 1.8?3 times less hydraulic drag coefficient compared to swirlers with straight channel walls at the same flow rate, respectively. The results of numerical simulati... ver más
Revista: ChemEngineering