Classification system for inter- and intra-module joints in non-sway steel MiC structures

Xiao Huang Can He, Tak Ming Chan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

7 Citations (Scopus)


The lack of guidelines for determining the rigidity of inter- and intra-module joints in corner-supported steel modular integrated construction (MiC) buildings can lead to unsafe or over-conservative designs. To address this issue, this study proposes a classification system for non-sway steel MiC buildings that covers both inter- and intra-module joints. First, the semi-rigidity of the joint regions in steel MiC buildings was clarified and the necessary degrees of freedom for joint classification were determined. Then a minimum substructure including one joint region was extracted from a steel MiC building, and its carrying capacity was determined as a simplified analytical model that considering the stiffnesses of both the inter- and intra-module joints. The simplified model was adopted to derive explicit formulas for the boundary limits of rigid/non-rigid inter- and intra-module joints, based on the criterion that the carrying capacity of the substructure with finite joint stiffnesses is 95% of that with rigid properties. Finally, the feasibility of the proposed classification system was verified by applying it to prototype MiC structures.

Original languageEnglish
Article number107913
JournalJournal of Constructional Steel Research
Publication statusPublished - Jul 2023


  • Boundary limits
  • Inter-module joints
  • Intra-module beam-column joints
  • Joint classification
  • MiC structures

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials
  • Metals and Alloys


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