NUMERICAL INVESTIGATION ON SEISMIC PERFORMANCE OF AN INNOVATIVE CONNECTION FOR MODULAR STEEL CONSTRUCTION
En-Feng DENG 1, Liang ZONG 1,2*, Xiao-Meng DAI 1 and Yang DING 1,2
1 School of Civil Engineering, Tianjin University, Tianjin, China
2 Key Laboratory of Coastal Civil Engineering Structure and Safety (Tianjin University), Ministry of Education, Tianjin, China
Thanks to the superiority in rapid and economic construction, modular steel construction (MSC) provides an excellent scheme for conventional on-site buildings with repetitive units. This paper proposes an innovative connection for MSC. The proposed connection can cooperate with building function favorably and make it possible to connect the individual modular units outside the building entirely. The construction of the innovative connection and the process of assembling are firstly described in detail. Subsequently, the load-transferring mechanism of the proposed connection is verified by comparison of the load-displacement response with two types of traditional connection under monotonic and cyclic load through finite element method (FEM). The proposed connection is evaluated as semi-rigid connection according to Eurocode3. Further, seismic performance of the innovative connection is investigated. The results indicate that the proposed connection exhibits ductility and plentiful hysteretic curve with unnoticeable pinching under quasi-static load therefore dissipate large amount of energy through plastic deformation.
Modular steel construction; Seismic performance; Innovative connection; Load-transferring mechanism; Numerical study