Evaluation of Modeling Strategies for Seismic Analysis of Confined Masonry Structures [post]

Bonisha Borah, Hemant B Kaushik, Vaibhav Singhal
2022 unpublished
Numerical models are effective tools for nonlinear seismic analysis required for performance-based design of structures. However, their potential often falls short while simulating the behavior of masonry structures because of their complex anisotropic behavior. The complexity increases further for confined masonry (CM) where, in addition to masonry, RC confining members are constructed around the periphery of masonry walls such that the structure work in unison. Though some modeling schemes
more » ... e been developed for linear and nonlinear analysis of CM walls, their applicability and accuracy are a matter of contention as they were based on different assumptions and theories. Most design codes do not specify modeling schemes due to limited research, especially considering the highly variable masonry properties. The limited modeling choices, some of which have not been validated sufficiently, pose difficulty for practicing engineers and limit their confidence in adopting them. The present work provides an understanding of the challenges on using different modeling strategies from an engineering practice perspective. Commonly adopted models were first used to simulate previously tested single-story CM wall specimens having different aspect ratios. The comparative assessment showed the efficacy of some schemes, while exhibiting ineffectiveness of others. The applicability of different methods was then assessed by analyzing a three-story CM building. The observed behavior clarified the characteristics and potentialities of different procedures, and provides direction to adopt better approaches for nonlinear analysis of CM walls.
doi:10.21203/rs.3.rs-1506811/v1 fatcat:5ooo3n2dq5bidnvvoqyqi4zhnu