Experimental Study of Steel-UHPC Sheet with Large Diameter Stud Interface Connection

Hongliang Xiu

doi:10.13206/j.gjgS23010201

Volume 38 Issue 3

Mar. 2023

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Hongliang Xiu. Experimental Study of Steel-UHPC Sheet with Large Diameter Stud Interface Connection[J]. STEEL CONSTRUCTION(Chinese & English), 2023, 38(3): 34-42. doi: 10.13206/j.gjgS23010201

Citation:

Hongliang Xiu. Experimental Study of Steel-UHPC Sheet with Large Diameter Stud Interface Connection[J]. STEEL CONSTRUCTION(Chinese & English), 2023, 38(3): 34-42. doi: 10.13206/j.gjgS23010201

Hongliang Xiu. Experimental Study of Steel-UHPC Sheet with Large Diameter Stud Interface Connection[J]. STEEL CONSTRUCTION(Chinese & English), 2023, 38(3): 34-42. doi: 10.13206/j.gjgS23010201

Citation:

Hongliang Xiu. Experimental Study of Steel-UHPC Sheet with Large Diameter Stud Interface Connection[J]. STEEL CONSTRUCTION(Chinese & English), 2023, 38(3): 34-42. doi: 10.13206/j.gjgS23010201

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Experimental Study of Steel-UHPC Sheet with Large Diameter Stud Interface Connection

doi: 10.13206/j.gjgS23010201

Hongliang Xiu

Jiangsu CRRC Urban Development Co., Ltd., Wuxi 214000, China

Received Date: 2023-01-02
Available Online: 2023-05-24
Publish Date: 2023-03-25

Abstract

Abstract

In order to further study the failure mode and mechanical characteristics of large diameter stud in ultra-high performance concrete (UHPC) and normal concrete (NC), the push-out tests of 7 groups of specimens were carried out. The influences of concrete strength, slab thickness, stud diameter, stud length-diameter ratio and concrete specimen size on the ultimate shear capacity of large diameter stud were analyzed in detail. The results showed that the failure mode of large diameter stud UHPC was stud shear. UHPC could effectively resist the splitting force generated by the stud and prevent the splitting failure of concrete slabs effectively. Compared with NC specimens, UHPC specimens had higher shear capacity and shear stiffness, but lower ductility. In UHPC specimens, the length-diameter ratio of large diameter stud, the thickness of concrete slab and the size of concrete slab had little influence on the shear capacity, shear stiffness and ultimate slip of the stud. Finally, according to the test results, the proposed formula for calculating loadslip curve and shear capacity of UHPC large diameter stud under shear failure mode were proposed, which could provide certain reference value for the engineering design of steel-UHPC composite structure.
- bridge engineering,
- large diameter stud,
- push-out test,
- shear resistance,
- load-slip curve

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References(20)

References

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