Use of the equations of the core bend for research of deflected mode and stability of the pipeline with curve inserts
The underground pipeline of any diameter has the curvilinear sites formed by bends in vertical and horizontal planes. With growth of diameters of the main pipelines extent of the sites which are under the influence of temperature pressure and internal working pressure increases. It causes an additional bend of the pipeline that is accompanied by loss of its stability. The equation for research of deflected mode and stability of the pipeline made of curve convex and concave inserts with given curvature in case of absence of its interaction with a ground is deduced. The example of calculation is considered and the analysis of the received results is carried out.
- Shammazov A.M., Zaripov R.M., Chichelov V.A., Korobkov G.E. Raschet i obespechenie prochnosti truboprovodov v slozhnykh inzhenerno-geologicheskikh usloviyakh. Tom 1. Chislennoe modelirovanie napryazhenno-deformirovannogo sostoyaniya i ustoichivosti truboprovodov (Calculation and to ensure the safety of pipelines in difficult engineering and geological conditions: in 2 volumes. Vol. 1. Numerical simulation of stress-strain state and stability of pipelines). Moscow, Inter, 2005. 706 p.
- Korobkov G.E., Zaripov R.M., Shammazov I.M. Chislennoe modelirovanie napryazhenno-deformirovannogo sostoyaniya i ustoichivosti truboprovodov i rezervuarov v oslozhnennykh usloviyakh ekspluatatsii (Numerical simulation of stress-strain state and stability of pipes and tanks in complicated conditions). SpB, Nedra, 2009. 409p.
- Svetlitskii V.A. Mekhanika truboprovodov i shlangov (Mechanics of pipes and hoses). Moscow: Mashinostroenie, 1982. 280 p.
- Ainbinder A.B., Kamershtein A.G. Raschet magistral'nykh truboprovodov na prochnost' i ustoichivost' (The calculation of pipelines on the strength and stability). Moscow, Nedra, 1982. 340 p.
curvature of the pipeline; curve convex and concave inserts; deflected mode and stability of pipeline; pipeline; кривизна трубопровода; кривые выпуклые и вогнутые вставки; напряженно-деформированное состояние; трубопровод; устойчивость трубопровода References to this article (GOST) R.B. Masalimov, R.M. Zaripov. Use of the equations of the core bend for research of deflected mode and stability of the pipeline with curve inserts // Electronic scientific journal "Oil and Gas Business". 2011. №1. P.172-193. URL: http://ogbus.ru/authors/Masalimov/Masalimov_1.pdf