التفاصيل البيبلوغرافية
| العنوان: |
Evaluation of PCCP Wire Breakage Warning and Alarm Threshold Based on High Performance Simulation. (English) |
| المؤلفون: |
MA Bao-long, ZHU Xin-min, CUI Wei |
| المصدر: |
China Rural Water & Hydropower; 2024, Issue 5, p1-8, 8p |
| مصطلحات موضوعية: |
PRESTRESSED concrete beams, WIRE, WATER hammer, FINITE element method, CRACKING of concrete, STEEL wire, STEEL pipe |
| مستخلص: |
This paper analyzed the pre-stressing mechanism of the steel wire and the damage process of the pipeline, and proposes a method of PCCP wire broken warning and alarm threshold assessment based on mechanical simulation analysis. The PCCP finite element model was established by ABAQUS program, and the complete construction process including laying bedding, installing pipelines, backfilling in steps was simulated, and the stress state of pipeline prestressing steel wires, steel cylinders and pipe core concrete was calculated under nearly 100 working conditions with different depths of burial and different design working pressures. It was proposed to take the maximum permissible number of broken wires of the pipe core concrete cracked under the action of water hammer as the early warning threshold for the bursting of the pipeline, and the maximum permissible number of broken wires in the limit state of the buried bearing capacity of the pipeline as the alarm threshold for pipe bursting, and analyzed the relationship between the PCCP wire broken warning and the alarm threshold under different working pressures and burial depths. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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