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Simple Nonlinear Numerical Modeling for Unreinforced and FRP-Reinforced Masonry Domes

Buildings, ISSN: 2075-5309, Vol: 14, Issue: 1
2024
  • 9
    Citations
  • 0
    Usage
  • 4
    Captures
  • 2
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    9
  • Captures
    4
  • Mentions
    2
    • News Mentions
      1
      • News
        1
    • References
      1
      • Wikipedia
        1

Most Recent News

Research Results from Polytechnic University Milan Update Understanding of Building Construction (Simple Nonlinear Numerical Modeling for Unreinforced and FRP-Reinforced Masonry Domes)

2024 JAN 29 (NewsRx) -- By a News Reporter-Staff News Editor at Daily Real Estate News -- New research on building construction is the subject

Article Description

This paper presents a new method to model the nonlinear behavior of double-curvature masonry structures, possibly reinforced by composite materials, by means of conventional elasto-plastic analyses. The method is meant to be used in professional design, especially for assessment and retrofitting purposes, based on the exploitation of the simplest nonlinear finite elements available in commercial software, namely, trusses with elasto-fragile and elasto-ductile behavior (Cutoff Bars, according for instance to the definition provided by Strand7 R3.1.3a). Numerical static nonlinear analyses are carried out by considering elastic hexahedral elements for bricks and by lumping nonlinearities on joints. These are assumed, in turn, to be elastic–brittle and elastic–plastic by using 1D elements, namely, Point Contacts, under the No-Tension Material hypothesis, and Cutoff Bars, respectively, assigning a small tensile resistance to the material. The reinforcement, realized with FRP hooping strips, is successfully modeled in a similar fashion, i.e., by applying perfectly bonded elastic–plastic Cutoff Bars at the extrados of the dome, where debonding is accounted for in a conventional way, limiting the tensile strength according to Italian Standards’ indications. The procedure is validated against benchmark models with the same geometry, using experimental data and more refined structural model results for comparison. After an in-depth analysis of the obtained results, in terms of capacity curves, the robustness and accuracy of the proposed approach are assessed.

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