Izvorni znanstveni članak

https://doi.org/10.17559/TV-20230308000423

Structural Design of Pressure Pipeline Wedge-Shaped Concrete Piers

Yanfang Li ; School of Civil Engineering, Tangshan University, Tangshan 063000, China; Tangshan Key Laboratory of Engineering Lean Construction and Informatization, Tangshan, China
Yonghua Wang ; School of Civil Engineering, Tangshan University, Tangshan 063000, China; Tangshan Key Laboratory of Engineering Lean Construction and Informatization, Tangshan, China
Jingyao Cai ; School of Civil Engineering, Tangshan University, Tangshan 063000, China
Chao Ren ; School of Civil Engineering, Tangshan University, Tangshan 063000, China; Tangshan Key Laboratory of Engineering Lean Construction and Informatization, Tangshan, China
Bo Zhang ; Beijing General Municipal Engineering Design and Research Institute Co., Ltd, Beijing 100082, China
Bing Zhang ; School of Civil Engineering, Tangshan University, Tangshan 063000, China; Tangshan Key Laboratory of Engineering Lean Construction and Informatization, Tangshan, China

Sažetak

This paper proposed a wedge concrete fixed pier device based on self-locking to solve the problems existing in the fixed pier of water supply pipeline in utility tunnels. The system converted the horizontal thrust, originally applied to the weld seam in the pipeline, into oblique downward pressure by bending the pipeline upward. When the pipeline was bent upward at an angle equal to twice the horizontal angle of the wedge concrete fixed pier, then the fixed pier achieved the variable pressure-bearing effect in the horizontal direction through the self-locking between the concrete pier and the bottom plate of the utility tunnels. In addition, this avoided the damage to the fixed pier device, caused by the instantaneous pipeline internal pressure exceeding the maximum bearing thrust of the weld seam. The wedge fixed pier could be poured twice when the pipeline entered the utility tunnels, saving the rework cost of pouring the concrete again due to the changes of the design positioning of the water supply pipeline. As long as the area of the built-in steel fittings in the wedge concrete exceeded a certain range, the wedge concrete pier would not be crushed.

Ključne riječi

pipeline bending; self-locking; variable pressure bearing; wedge concrete fixed pier

Hrčak ID:

307699

URI

https://hrcak.srce.hr/307699

Datum izdavanja:

31.8.2023.

Posjeta: 298 *