Numerical simulation of the ultimate length of suspended pipeline under tidal scour
Under the action of perennial tidal scour,the soil around some sections of the oil pipeline in beach area is transported by the tide to form a suspended state,it has a serious impact on the safety of pipeline operation and mainte-nance.In view of the above,firstly,the stress of the suspended pipeline is analyzed,and the static analysis physical mod-el of the suspended pipeline is established,the stress and strain of 8 groups of suspended pipelines with 4 different diame-ters were simulated by using Comsol software,by comparing with the yield limits of two different kinds of pipes,the ulti-mate suspended length of 8 groups of suspended pipes was obtained,and the relation between suspended length and stress was fitted by Origin Lab software,it is proved that the length of suspension is linearly and positively correlated with the stress.The experimental results can provide a theoretical basis for similar working conditions in the field,and play a guid-ing role in the inspection and maintenance of suspended pipelines.
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