Earthquakes and Structures

  • 제6권4호
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  • Pages.409-436
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  • 2014
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  • 2092-7614(pISSN)
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  • 2092-7622(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Seismic response of masonry infilled RC frames: practice-oriented models and open issues

  • 투고 : 2013.01.31
  • 심사 : 2014.01.13
  • 발행 : 2014.04.30
⟨ 이전 논문 다음 논문 ⟩

초록

Although it is widely accepted that the interaction -between masonry infill and structural members significantly affects the seismic response of reinforced concrete (RC) frames, this interaction is generally neglected in current design-oriented seismic analyses of structures. Moreover, the role of masonry infill is expected to be even more relevant in the case of existing frames designed only for gravitational loads, as infill walls can significantly modify both lateral strength and stiffness. However, the additional contribution to both strength and stiffness is often coupled to a modification of the global collapse mechanisms possibly resulting in brittle failure modes, generally related to irregular distributions of masonry walls throughout the frame. As a matter of principle, accurate modelling of masonry infill should be at least carried out by adopting nonlinear 2D elements. However, several practice-oriented proposals are currently available for modelling masonry infill through equivalent (nonlinear) strut elements. The present paper firstly outlines some of the well-established models currently available in the scientific literature for modelling infill panels in seismic analyses of RC frames. Then, a parametric analysis is carried out in order to demonstrate the consequences of considering such models in nonlinear static and dynamic analyses of existing RC structures. Two bay-frames with two-, three- and four-storeys are considered for performing nonlinear analyses aimed at investigating some critical aspects of modelling masonry infill and their effects on the structural response. Particularly, sensitivity analyses about specific parameters involved in the definition of the equivalent strut models, such as the constitutive force-displacement law of the panel, are proposed.

키워드

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피인용 문헌

  1. Two-way seismic behaviour of concrete frames with infill walls vol.168, pp.9, 2015, https://doi.org/10.1680/jstbu.14.00055
  2. Influence of column shear failure on pushover based assessment of masonry infilled reinforced concrete framed structures: A case study vol.100, 2017, https://doi.org/10.1016/j.soildyn.2017.05.032
  3. Modelling of masonry infilled RC frames subjected to cyclic loads: State of the art review and modelling with OpenSees vol.150, 2017, https://doi.org/10.1016/j.engstruct.2017.07.002
  4. A simplified procedure for Nonlinear Static analysis of masonry infilled RC frames vol.101, 2015, https://doi.org/10.1016/j.engstruct.2015.07.023
  5. Experimental and Finite Element Analytical Investigation of Seismic Behavior of Full-Scale Masonry Infilled RC Frames vol.20, pp.7, 2016, https://doi.org/10.1080/13632469.2016.1138171
  6. Effect of masonry infill walls with openings on nonlinear response of reinforced concrete frames vol.12, pp.3, 2014, https://doi.org/10.12989/eas.2017.12.3.333
  7. Comparison of the seismic performance of existing RC buildings designed to different codes vol.14, pp.6, 2018, https://doi.org/10.12989/eas.2018.14.6.505
  8. The Contribution of the Infill Walls to the Lateral Strength of Concrete Frames vol.13, pp.1, 2019, https://doi.org/10.2174/1874836801913010114
  9. Lateral loading test for partially confined and unconfined masonry panels vol.18, pp.3, 2014, https://doi.org/10.12989/eas.2020.18.3.379
  10. Influence of infill walls on modal expansion of distribution of effective earthquake forces in RC frame structures vol.18, pp.4, 2014, https://doi.org/10.12989/eas.2020.18.4.437
  11. Structural health monitoring of seismically vulnerable RC frames under lateral cyclic loading vol.19, pp.1, 2014, https://doi.org/10.12989/eas.2020.19.1.29
  12. Effect of Masonry Infill Constitutive Law on the Global Response of Infilled RC Buildings vol.11, pp.2, 2014, https://doi.org/10.3390/buildings11020057