Plastic model for asymmetrically loaded reinforced concrete slabs

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Most methods for the design and analysis of reinforced concrete slabs for punching are based on experiments on slab-column connections, reflecting the situation in building slabs. Slab-column connections with unbalanced
moments have also been studied in the past. Experiments indicate that the accuracy of models for asymmetrically loaded slabs is lower than for symmetrically loaded slabs. In this paper, the difference in accuracy between test predictions for symmetrically and asymmetrically loaded slabs is tackled. A plastic model, the Extended Strip Model, is proposed. The results of maximum loads according to this model are compared to experimental results of symmetrically and asymmetrically loaded slabs. The comparison between the proposed Extended Strip Model and the experimental results shows that the model has a consistent performance for both symmetrically and asymmetrically
loaded slabs. Moreover, the model has as an advantage that it combines the failure modes of flexure, shear and punching. The proposed model can be used for the analysis of slabs. In particular, it can be used for the assessment of
existing slab bridges subjected to concentrated live loads.
Original languageEnglish
Title of host publicationSymposium volume: Recent Developments in Two-Way Slabs: Design, Analysis, Construction, and Evaluation
Subtitle of host publicationAn ACI Technical Publication
EditorsM. Mahamid, M. Shin
Number of pages20
ISBN (Print)978-1-945487-76-7
Publication statusPublished - 2017
EventACI 2015 Denver: American Concrete Institute Fall Convention in Denver - Denver, United States
Duration: 8 Nov 201512 Nov 2015


ConferenceACI 2015 Denver
Abbreviated titleACI 2015 Denver
CountryUnited States
Internet address


  • asymmetrically loaded slabs
  • extended strip model
  • flexure
  • one-way slabs
  • plasticity
  • punching
  • reinforced concrete slabs
  • shear
  • ; symmetrically loaded slabs


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