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Cyclic behavior of stiffened joints between concrete-filled steel tubular column and steel beam with narrow outer diaphragm and partial joint penetration welds

引用

Frontiers of Structural and Civil Engineering 2016年第3期10卷 333-344页

作者： Chunyan QUAN Wei WANG Jian ZHOU Rong WANG State Key Laboratory of Disaster Reduction in Civil Engineering TongJi University Shanghai 200092 China Department of Structural Engineering TongJi University Shanghai 200092 China East China Architectural Design & Research Institute Shanghai 200002 China

This paper presented an investigation on a stiffened joint in practical engineering which was between concrete-filled steel tubular column and steel beam with narrow outer diaphragm and partial joint penetration welds. Through the low-frequency cyclic loading test, the cyclic behavior and failure mode of the specimen were investigated. The results of the test indicated the failure mode and bearing capacity of the specimen which were influenced by the axial compression ratio of the concrete-filled tubular column. On the contrary, the inner diaphragm and inner stiffeners had limited impacts on the hysteretic behavior of the joint. There was no hysteresis damage fracture on the narrow outer diaphragm connected to the concrete-filled steel tubular column with partial joint penetration welds. Due to the excellent ductility and energy dissipating capacity, the proposed joint could be applied to the seismic design of high-rise buildings in highly intensive seismic region, but axial compression ratio should be controlled to avoid unfavorable failure modes.

关键词： narrow outer diaphragm concrete-filled tubular column joint inner and outer stiffening cyclic behavior

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