Study on Mechanical Performance of Connection jointsIn Novel Modular Steel Structure Buildings

Abstract

The overall mechanical performance of modular steel structure buildings are largely determined by the mechanical performance of the connection joints between the adjacent modules. In this paper, a novel connection joints between the adjacent modules is taken as research object, which has the advantages of convenient construction and assembly. By means of FEA, three models including the joint model, the model of adding ribs and the model of increasing beam height are calculated, and the experimental results were compared. The finite element model uses solid elements to simulate the detail structure of joints and contact elements to the contact relationship between components. The research results show that the results of finite element analysis are in good agreement with the experimental results in terms of deformation state and bearing capacity, and the accuracy of the finite element model is verified. The finite element model established in this paper can simulate the stress state of various parts of the joint which can make up for the shortage of the experimental measurement.

A comprehensive review and classification of inter-module connections for hot-rolled steel modular building systems

“…Description of joint configuration FTF01 [115] Steel hollow cube bracket FTF02 [116] Corner fitting and intermediate plate FTF03 [117] Corner fittings with gusset plates and locating pins FTF04 [118] Corner fittings with tie plates and spigots FTF05 [119] Corner fittings with tie plates and twist locks FTF06 [120] Intermediate rubber isolator, tenon plates and cover plates FTF07 [121] Corner fittings with transverse clamp FTF08 [121] Corner fittings with cross-shaped clamp FTF09 [121] Corner fittings with X-shaped clamp FTF10 [121] Bolted corner fittings FTF11 [122] Bolted square steel pipe blocks with internal circular pipes FTF12 [123] Corner fittings inserted through hollow steel beams, gusset plates and locating pins FTF13 [66] Vertically and horizontally bolted corner fittings vertical FTF14 [124] Corner fittings with vertical bolts through columns FTF15 [125] Corner fittings with internal threaded aperture FTF16 [126] Corner fittings with rubber isolation FTF17 [127] Corner fittings bolted to endplates and intermediate plates FTF18 [128] Corner fittings with external bolts and positioning plate FTF19 [91] Corner fittings with cruciform plate and horizontal bolts…”

“…While the configuration was not intended for volumetric off-site modular structures, it can be easily adapted to be used in this type of structural system as well. In Hu et al's joint (FTF18) [128], the corner fittings are extended and open-sided to allow access for fastening the bolts. Lian et al [91] introduced a cruciform gusset plate between the corner fittings, with the vertical flange extended such that horizontal bolts connected adjacent modules (FTF19).…”

“…11. Fitting-to-fitting bolted IMCs: FTF01 [115], FTF02 [116], FTF03 [117], FTF04 [118], FTF05 [119], FTF06 [120], FTF07 [121], FTF08 [121], FTF09 [121], FTF10 [121], FTF11 [122], FTF12 [123], FTF13 [66], FTF14 [124], FTF15 [125], FTF16 [126], FTF17 [127], FTF18 [128], FTF19 [91]. Having completed the classification of IMCs, an inclusive and comprehensive record has been produced, revealing the multitude of existing connection systems and thus, displaying the magnitude of the topic discussed herein.…”