MECHANICAL PROPERTIES OF HIGH-STRENGTH-CONCRETE-FILLED HIGH-STRENGTH-STEEL SQUARE-TUBE STUB COLUMNS UNDER BIAXIAL ECCENTRIC LOADS

LI Guochang; CAO Wenzheng; YANG Zhijian; FENG Xing; CHEN Bowen

doi:10.13204/j.gyjzG19111310

Volume 50 Issue 10

Jan. 2021

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2020 > 50(10): 152-159,193

Zhou Deheng, Li Aiqun, Jia Hong, Wang Wei, Guo Tong, Pan Zhihong. PROGRESS OF INVESTIGATION ON SEISMIC BEHAVIOR OF PRECAST CONCRETE FRAME STRUCTURES( Ⅰ) : STUDY OF JOINT PROPERTY[J]. INDUSTRIAL CONSTRUCTION, 2014, 44(06): 95-100. doi: 10.13204/j.gyjz201406022

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LI Guochang, CAO Wenzheng, YANG Zhijian, FENG Xing, CHEN Bowen. MECHANICAL PROPERTIES OF HIGH-STRENGTH-CONCRETE-FILLED HIGH-STRENGTH-STEEL SQUARE-TUBE STUB COLUMNS UNDER BIAXIAL ECCENTRIC LOADS[J]. INDUSTRIAL CONSTRUCTION, 2020, 50(10): 152-159,193. doi: 10.13204/j.gyjzG19111310

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MECHANICAL PROPERTIES OF HIGH-STRENGTH-CONCRETE-FILLED HIGH-STRENGTH-STEEL SQUARE-TUBE STUB COLUMNS UNDER BIAXIAL ECCENTRIC LOADS

doi: 10.13204/j.gyjzG19111310

School of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, China

Received Date: 2019-11-13

Abstract

Abstract

An experimental research of 6 high-strength-concrete-filled high-strength-steel square-tube (HCHSST) stub columns subjected to biaxial eccentric loading was performed. The mechanical properties of the members with different eccentricity (0.27 to 0.80) and steel yield strength (554 to 896 MPa) were studied. The finite element analysis models of HCHSST stub columns under biaxial eccentric loading were established by the finite element analysis software ABAQUS.The numerical results were in good agreement with the experimental results, and the whole loading processes of the typical members and influence factors were analyzed. The results showed that concrete strength, steel yield strength and steel ratios had a little bit of influences on the initial stiffness of the load-lateral deflection curves of members. However, eccentricity had a relatively large influence on the initial stiffness of members, the ultimate bearing capacity of members increased with the increase of concrete strength, steel yield strength and steel ratios, and decreased with the increase of eccentricity. The ductility of members increased with the increase of eccentricity and steel ratios, and decreased with the increase of concrete strength.
- high-strength-steel square-tube,
- high-strength concrete,
- biaxial eccentric loading,
- stub column,
- parametric analysis

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References

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