Eccentric compression of T-shaped light steel concrete
composite columns in modular wall prefabricated building
Weichao Li,Haodong Zhang,Wentao Qiao,Chenlei Wang,Haiying Zhang,Bing Yan
Abstract
This paper investigates the eccentric compression behavior of multi-limb (9-limb) light steel concrete T
shaped composite column in an ultra-low energy modular wall prefabricated building system. Nine groups of T-shaped
composite column specimens were subjected to static eccentric loading tests. The effects of eccentricity, steel thickness,
slenderness ratio, and eccentricity angle on structural performance were systematically analyzed. The results showed
that all specimens mainly exhibited yielding of the steel on the compression side, concrete crushing, and overall
bending failure in medium (MC) and long (LC) columns. The load-displacement curves indicated that eccentricity had
a significant influence on the peak bearing capacity: higher eccentricity reduced strength but improved ductility. Under
eccentric loading, the strain distribution across the section was generally consistent with the plane section assumption.
Key Words
cold-formed thin-walled steel; eccentric compression static test; local buckling; special-shaped composite column; ultra-low energy prefabricated building
Address
Weichao Li — School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang, China
Haodong Zhang — School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang, China
Wentao Qiao — 1)School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang, China 2)Key Laboratory of Roads and Railway Engineering Safety Control (Shijiazhuang Tiedao University), Ministry of Education, Shijiazhuang, Hebei Province ,050043, China
Chenlei Wang — School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang, China
Haiying Zhang — School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang, China
Bing Yan — School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang, China
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