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Предложения по расчету участков заглубленных магистральных трубопроводов с конструктивным включением на сейсмическое воздействие

Предложения по расчету участков заглубленных магистральных трубопроводов с конструктивным включением на сейсмическое воздействие

Abstract

Статья посвящена вопросам разработки практических рекомендаций к расчёту участков заглубленных магистральных трубопроводов с конструктивным включением на сейсмическое воздействие. Разработанная ранее методика не получила широкого распространения на практике в виду практических сложностей, связанных с необходимостью численного решения систем дифференциальных уравнений. На основе явлений локализации колебаний получены аналитические зависимости для определения дополнительных динамических напряжений в терминах действующих нормативных документов. Полученные зависимости характеризуют дополнительные продольные и поперечные динамические напряжения, возникающие в области сосредоточенного включения вследствие локализации колебаний на указанном участке трубопровода. Из полученных зависимостей следует, что при определенных условиях локальные колебания включения могут привести к появлению дополнительных усилий, превосходящих усилия, обусловленные колебаниями грунта.В статье приводятся рекомендации к расчёту на сейсмическое воздействие участков заглубленных магистральных трубопроводов с конструктивным включением. Представлена последовательность расчётов по предлагаемой методике.

Presented the development of practical recommendations to the calculation of the main sites of buried pipelines with structural interventions on the seismic action. A previously developed technique was not widely used in practice in mind the difficulties associated with the need of numerical solutions of systems of differential equations.On the basis of the localization phenomena fluctuations, analytical dependence for the determination of additional dynamic stresses in terms of the relevant regulations. The resulting dependence is characterized by additional longitudinal and transverse dynamic stresses in turn due to the concentrated localization of vibration on that section of the pipeline. From the figure it is that, under certain conditions, local variations inclusion may lead to additional efforts that exceed the efforts resulting from fluctuations in the soil.The article provides a method of calculating the effect on seismic sections of buried pipelines with a constructive inclusion. Shows the sequence of calculations by the proposed procedure.

Keywords

ЗАГЛУБЛЕННЫЙ ТРУ БОПРОВОД,СЕЙСМИЧЕСКОЕ ВОЗДЕЙСТВИЕ,SEISMIC EFFECTS,КОНСТРУКТИВНОЕ ВКЛЮЧЕНИЕ,INCLUSION OF CONSTRUCTIVE,ОЦЕНКА ПРОЧ НОСТИ,МЕТОДИКА РАСЧЕТА,METHOD OF CALCULATION,BURIED PIPELINE,STRENGTH ASSESSMENT

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average