STATIC PERFORMANCE OF THE HIGH-PERFORMANCE CONCRETE FILLED STEEL TUBULAR STUB COLUMN(Ⅱ): MECHANISM ANALYSIS AND LOAD BEARING CAPACITY

Wang Qingli; Li Ruilin; Li Qinggang; Wang Yue

doi:10.13204/j.gyjz201303002

Volume 43 Issue 3

Dec. 2014

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Wang Sufang, Chen Yiyi. STIFFNESS COEFFICIENT METHOD TO CALCULATE THE INITIAL STIFFNESS OF END-PLATE JOINT IN SLENDER STEEL FRAME[J]. INDUSTRIAL CONSTRUCTION, 2010, 40(10): 126-131. doi: 10.13204/j.gyjz201010028

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Wang Qingli, Li Ruilin, Li Qinggang, Wang Yue. STATIC PERFORMANCE OF THE HIGH-PERFORMANCE CONCRETE FILLED STEEL TUBULAR STUB COLUMN(Ⅱ): MECHANISM ANALYSIS AND LOAD BEARING CAPACITY[J]. INDUSTRIAL CONSTRUCTION, 2013, 43(3): 8-12. doi: 10.13204/j.gyjz201303002

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STATIC PERFORMANCE OF THE HIGH-PERFORMANCE CONCRETE FILLED STEEL TUBULAR STUB COLUMN(Ⅱ): MECHANISM ANALYSIS AND LOAD BEARING CAPACITY

doi: 10.13204/j.gyjz201303002

1.
1. College of Civil Engineering,Shenyang Jianzhu University,Shenyang 110168,China;
2.
2. Liaoning Provincial Building Design and Research Institute,Shenyang 110005,China;
3.
3. Department of Civil Engineering,Liaoning Urban Construction Technical College,Shenyang 110122,China

Received Date: 2012-10-30
Publish Date: 2013-03-20

Abstract

Abstract

Distributions of stresses and strains of steel tube and concrete for high-performance concrete filled steel tubular stub column were investigated,it was found that longitudinal stress of concrete at mid-height cross-section distributed uniformly around the circumferential direction for the circular specimen,while longitudinal stress of concrete at mid-height cross-section located at corners was the biggest one for the square specimen.During loading process,steel tube at mid-height cross-section yielded firstly and then yield region developed gradually toward the two ends of the specimen.Analysis results of the typical calculations indicated that the circular steel tube could provide better confinement for concrete than the square steel tube,also,the circular steel tube confine the concrete uniformly around the circumferential direction while the confinement forces located at corners were the biggest ones for the square specimen.All of the specimens had the biggest confinement forces at the mid-height cross-section.Adhesive strength had little influence on the load bearing capacity of the specimens.Calculation formula of load bearing capacity for the normal concrete filled steel tubular stub column is also suitable for the high-performance concrete filled steel tubular stub column.There are no essential differences between the high-performance concrete filled steel tubular stub column and the normal concrete filled steel tubular stub column in aspect of static performance.
- concrete filled steel tube,
- high-performance concrete,
- axially compressed stub column,
- static performance,
- mechanism analysis,
- load bearing capacity

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References

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