Axial Compression Behaviour of L-Shaped Column Composed of Recycled Aggregate Concrete-Filled Square Steel Tubes

MA Tengfei; CHEN Zhihua; DU Yansheng

doi:10.13204/j.gyjzG22031905

Volume 53 Issue 5

May 2023

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MA Tengfei, CHEN Zhihua, DU Yansheng. Axial Compression Behaviour of L-Shaped Column Composed of Recycled Aggregate Concrete-Filled Square Steel Tubes[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(5): 1-6. doi: 10.13204/j.gyjzG22031905

Citation:

MA Tengfei, CHEN Zhihua, DU Yansheng. Axial Compression Behaviour of L-Shaped Column Composed of Recycled Aggregate Concrete-Filled Square Steel Tubes[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(5): 1-6. doi: 10.13204/j.gyjzG22031905

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Axial Compression Behaviour of L-Shaped Column Composed of Recycled Aggregate Concrete-Filled Square Steel Tubes

doi: 10.13204/j.gyjzG22031905

1. School of Civil Engineering, Tianjin University, Tianjin 300072, China;
2. Department of Civil Engineering, North China Institute of Aerospace Engineering, Langfang 065000, China

Received Date: 2022-03-19

Abstract

Abstract

To study the axial compressive behaviour of the L-shaped column composed of recycled aggregate concrete-filled square steel tubes(L-RACFST), the numerical studies on the L-RACFST columns and verified the numerical model were performed based on the test result. The finite element analysis results showed that when the replacement ratio of recycled aggregate coarse (RAC) exceeded 40%, the elastic-plastic stage was not obvious, and the curve tended to directly enter the plastic stage. Parametric study was performed considering the effect of steel strength, the steel tube thickness, the width of square steel tube and the connecting plate, etc. With the increase in the replacement ratio of RAC, the bearing capacity, stiffness and ductility of the L-RACFST columns decreased. With the same replacement ratio of RAC, the peak bearing capacity of the L-RACFST columns increased gradually with the increase of steel strength, steel tube thickness and square steel tube width. The width of the connecting plate had little effect on the peak bearing capacity of the specimen.

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References(22)

References

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