Mechanical performance of buried pipe under traffic load-internal pressure coupling action: Experimental and numerical study
Changxi Shan, Wenhao Li
TL;DR
This study examines how buried water pipes handle traffic and internal pressure, finding that internal pressure has a bigger impact than traffic loads.
Contribution
A new theoretical model for calculating circumferential stress in buried ABR pipes under combined loads is proposed.
Findings
ABR pipes show superior mechanical performance with critical stress at 90° and 180° positions.
Internal pressure significantly increases circumferential stress more than traffic load.
Larger diameter-to-thickness ratios reduce circumferential stress in ABR pipes.
Abstract
With the accelerated progress of urbanization, there is an increasing occurrence of buried flexible water distribution pipelines subjected to high internal pressure and heavy loads. The probability of damage to these pipelines is magnified due to traffic load-internal pressure coupling action. Hence, investigating the mechanical performance of buried pipelines under such conditions is a topic of significant research importance. The pipe made of acrylate polymer blended with polyvinyl chloride resin for water supply (ABR pipe) is modified from PVC pipe, exhibiting high toughness, low temperature, and impact resistance. Experimental and numerical studies were conducted to investigate the mechanical performance of buried ABR pipe by applying traffic load, internal pressure, and a combined traffic load-internal pressure on the buried ABR pipe. The experimental and numerical anlyses were…
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Taxonomy
TopicsGeotechnical Engineering and Underground Structures · Structural Integrity and Reliability Analysis · Water Systems and Optimization