Mechanical property of improved hinge joint junction surface in prefabricated voided slab bridge

HUANG Wan-kun; WU Qing-xiong; WANG Qu

doi:10.19818/j.cnki.1671-1637.2022.06.011

Volume 22 Issue 6

Dec. 2022

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HUANG Wan-kun, WU Qing-xiong, WANG Qu. Mechanical property of improved hinge joint junction surface in prefabricated voided slab bridge[J]. Journal of Traffic and Transportation Engineering, 2022, 22(6): 169-181. doi: 10.19818/j.cnki.1671-1637.2022.06.011

Citation:

HUANG Wan-kun, WU Qing-xiong, WANG Qu. Mechanical property of improved hinge joint junction surface in prefabricated voided slab bridge[J]. Journal of Traffic and Transportation Engineering, 2022, 22(6): 169-181. doi: 10.19818/j.cnki.1671-1637.2022.06.011

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Mechanical property of improved hinge joint junction surface in prefabricated voided slab bridge

doi: 10.19818/j.cnki.1671-1637.2022.06.011

HUANG Wan-kun^{1, 2
,},
WU Qing-xiong^{1, 3
,
,},
WANG Qu^{1, 3}

1.
College of Civil Engineering, Fuzhou University, Fuzhou 350116, Fujian, China
2.
Key Laboratory of Fujian Universities for Engineering Structures, Fuzhou University, Fuzhou 350116, Fujian, China
3.
Fujian Provincial Key Laboratory on Multi-Disasters Prevention and Mitigation in Civil Engineering, Fuzhou University, Fuzhou 350116, Fujian, China

Funds:

National Key Research and Development Program of China 2017YFE0130300

National Natural Science Foundation of China 51808126

More Information

Author Bio:
HUANG Wan-kun(1982-), male, experimentalist, PhD, huangwankun@fzu.edu.cn

WU Qing-xiong(1973-), male, professor, PhD, wuqingx@fzu.edu.cn
Received Date: 2022-05-21
Available Online: 2023-01-10
Publish Date: 2022-12-25

Abstract

Abstract

In order to improve the transverse mechanical property of prefabricated voided slab bridges, two hinge joint improvement methods were designed. Specifically, discontinuous steel bars could be replaced by continuous steel plates in hinge joint junction surfaces, and improved hinge joint structures and grouting materials could be used. A local model test method was adopted, and the normal and tangential strengths of the hinge joint junction surface were calculated. The formulas for calculating the flexural and shear capacities of the hinge joint junction surfaces with discontinuous steel bars and continuous steel plates were proposed. Research results indicate that the errors between the test values of local model and the calculation values from the proposed formula for calculating the flexural and shearing capacities are less than 10%, so it is proved that the proposed formula can accurately calculate the bearing capacities of hinge joint junction surface with continuous steel plate. For full-depth hinge joints without steel bars in junction surfaces, the normal strength of the junction surface is 1.29 MPa, which is 39% the axial tensile strength of weak side concrete. The tangential strength of the junction surface is 0.45 MPa, which is 1.5% the axial compressive strength of the weak side concrete. Compared with the hinge joint without steel bars in junction surface, the normal strengths of the hinge joint junction surfaces with discontinuous steel bars and continuous steel plates increase by 98% and 73%, respectively, and the tangential strengths of the junction surfaces increase by 71% and 78%, respectively. The normal strength of partial-depth hinge joint junction surfaces with normal concrete is 1.30 MPa, which is 40% the axial tensile strength of the weak side concrete. The tangential strength of the junction surfaces is 0.33 MPa, which is 1.1% the axial compressive strength of the weak side concrete. Compared with the junction surfaces with normal concrete grouting full-depth and partial-depth hinge joints, the normal strengths of the junction surfaces with UHPC grouting full-depth and partial-depth hinge joints improve by 13% and 21%, respectively, and the tangential strengths of the junction surfaces improve by 64% and 94%, respectively. 6 tabs, 15 figs, 32 refs.
- bridge engineering,
- prefabricated voided slab bridge,
- local model test,
- improved hinge joint junction surface,
- continuous steel plate,
- UHPC,
- junction surface strength

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References(32)

References

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Mechanical property of improved hinge joint junction surface in prefabricated voided slab bridge

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