The Shear Bearing Capacity of Prefabricated UHPC Utility Tunnels

CHEN Shuhui; XIA Zhanghua; WU Zelin; XU Yousheng; HU Mingliang; ZHU Sanfan

doi:10.13204/j.gyjzG22010413

Volume 53 Issue 5

May 2023

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2023 > 53(5): 158-164

CHEN Shuhui, XIA Zhanghua, WU Zelin, XU Yousheng, HU Mingliang, ZHU Sanfan. The Shear Bearing Capacity of Prefabricated UHPC Utility Tunnels[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(5): 158-164. doi: 10.13204/j.gyjzG22010413

Citation:

CHEN Shuhui, XIA Zhanghua, WU Zelin, XU Yousheng, HU Mingliang, ZHU Sanfan. The Shear Bearing Capacity of Prefabricated UHPC Utility Tunnels[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(5): 158-164. doi: 10.13204/j.gyjzG22010413

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The Shear Bearing Capacity of Prefabricated UHPC Utility Tunnels

doi: 10.13204/j.gyjzG22010413

1. Jianyan Testing Group Co., Ltd., Xiamen 361004,China;
2. College of Civil Engineering, Fuzhou University, Fuzhou 350108, China;
3. Shenzhen Municipal Engineering Design Institute Co., Ltd., Shenzhen 518038, China

Received Date: 2022-01-04

Abstract

Abstract

In order to study the shear bearing capacity of prefabricated UHPC utility tunnels under static loads, the shear resistance calculation method of existing box-shape concrete structures was analyzed, and the tensile effect of steel fibers on the structure was considered, and a shear bearing capacity calculation method of prefabricated UHPC utility tunnels was proposed. Combining with the static tests under bidirectional loads on prefabricated UHPC utility tunnels, the proposed calculation formula for the shear bearing capacity was analyzed, compared and verified. The results indicated that the theoretically calculated values of the shear bearing capacity of top plates and side walls for the utility tunnel structure in destruction under confining pressure, which was considered the contribution of steel fibers in UHPC to shear resistance of structures and was referred to the "internal force arch" calculation model of box-shaped structurs, were closer to the measured values in tests. The calculated results were more accurate, and the calculation errors were within 7%. Compared with the existing calculation methods, the proposed method was more accurate.
- UHPC,
- utility tunnel,
- static test,
- shear performance,
- bearing capacity

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References(23)

References

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