Probabilistic approach to assess URM walls with openings using discrete rigid block analysis (D-RBA)

Date

2022-12-01

Author

Pulatsu, Bora
Gonen, Semih
Parisi, Fulvio
Erdogmus, Ece
Tuncay, Kağan
Funari, Marco Francesco
Lourenco, Paulo B.

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

158
views

0
downloads

This study aims to improve our current understanding of the seismic assessment of load-bearing unreinforced masonry (URM) systems by proposing a probabilistic computational modeling framework using the discrete element method (DEM). The main objective is to predict the structural behavior and capacity of URM walls with openings subjected to lateral loading, considering uncertainties in material properties. The proposed modeling strategy represents masonry as an assembly of rigid blocks interacting along their boundaries by adopting the point-contact hypothesis. Fracture energy-based softening contact models are implemented into a commercial discrete element code (3DEC) to better simulate both the pre-and post-peak behavior of masonry. The results highlight the influence of material properties on the force capacity, displacement capacity (drift limits), and collapse mechanisms of walls with openings. Based on the applied non-spatial probabilistic analyses, the most commonly observed failure mechanisms are further assessed using a simplified macro-block formulation. As a result, practical, yet necessary, inferences are made, providing valuable contributions. Furthermore, the validated discontinuum analysis framework is demonstrated as an accurate structural analysis strategy and a useful approach to simulating the potential collapse mechanism of load-bearing URM structures.

Subject Keywords

Masonry, Stochastic analysis, Computational modeling, Discrete element method, Walls with openings, Seismic assessment, Uncertainty quantification, MASONRY SPANDRELS, SEISMIC ASSESSMENT, CYCLIC TESTS, SIMULATION, STRENGTH, AQUEDUCT, BEHAVIOR, MODELS, PEAK, TOOL

URI

https://hdl.handle.net/11511/100893

Journal

JOURNAL OF BUILDING ENGINEERING

DOI

https://doi.org/10.1016/j.jobe.2022.105269

Collections

Department of Civil Engineering, Article

Suggestions

OpenMETU
Core

Simulation of the in-plane structural behavior of unreinforced masonry walls and buildings using DEM Pulatsu, Bora; Erdogmus, Ece; Lourenço, Paulo B.; Lemos, Jose V.; Tuncay, Kağan (2020-10-01) In this study, a novel computational modeling strategy is proposed to estimate the lateral load capacity and behavior of unreinforced masonry (URM) structures. All commonly noted failure mechanisms are captured via the proposed modeling strategy using the discrete element method (DEM) in three-dimensions (3D). Masonry walls are represented as a system of elastic discrete blocks, where the nodal velocities are evaluated by integrating the equations of motion using the central difference method. Then, the mec...
A modified applied element model for the simulation of plain concrete behaviour Soysal, Berat Feyza; Arıcı, Yalın; Tuncay, Kağan (2022-08-01) A modified applied element model to simulate the behaviour of plain concrete continuum structures including discrete cracking is proposed in this study. In the classical applied element model, Poisson effects are fully ignored. To remediate this issue, diagonal elements are introduced to include the Poisson effect, and the constitutive parameters are rigorously determined using the Cauchy-Born rule and the hyper-elastic theory. The formulation is validated for linear elastic problems and the consistency and...
Recursive Two-Way Parabolic Equation Approach for Modeling Terrain Effects in Tropospheric Propagation Ozgun, Ozlem (2009-09-01) The Fourier split-step method is a one-way marching-type algorithm to efficiently solve the parabolic equation for modeling electromagnetic propagation in troposphere. The main drawback of this method is that it characterizes only forward-propagating waves, and neglects backward-propagating waves, which become important especially in the presence of irregular surfaces. Although ground reflecting boundaries are inherently incorporated into the split-step algorithm, irregular surfaces (such as sharp edges) in...
Simplified Approach for In-Plane Strength Capacity of URM Walls by Using Lower-Bound Limit Analysis and Predefined Damage Patterns Karadeniz, Derya; Yılmaz, Mustafa Tolga; Icel, Cemal; Erberik, Murat Altuğ (2022-06-01) In this study, a two-phase simplified approach is proposed to predict the in-plane strength capacity of unreinforced masonry (URM) walls. In the first phase, in-plane damage and failure patterns of URM walls are determined from available observational (field) data, experimental data and also from numerical analysis data. Then, a set of rules are proposed to estimate damage and failure patterns of URM wall panels. In the second phase, this valuable information is employed to develop a simplified numerical mo...
Monte Carlo analysis of ridged waveguides with transformation media Ozgun, Ozlem; Kuzuoğlu, Mustafa (Wiley, 2013-07-01) A computational model is presented for Monte Carlo simulation of waveguides with ridges, by combining the principles of transformation electromagnetics and the finite methods (such as finite element or finite difference methods). The principle idea is to place a transformation medium around the ridge structure, so that a single and easy-to-generate mesh can be used for each realization of the Monte Carlo simulation. Hence, this approach leads to less computational resources. The technique is validated by me...

Citation Formats

B. Pulatsu et al., “Probabilistic approach to assess URM walls with openings using discrete rigid block analysis (D-RBA),” JOURNAL OF BUILDING ENGINEERING, vol. 61, pp. 0–0, 2022, Accessed: 00, 2022. [Online]. Available: https://hdl.handle.net/11511/100893.