Very State Under The Large-diameter Openings Pipeline Performance

Bury land pipeline have been used extensively to transport the fluids such as oil and air, relative to on the ground ordinary pipeline it get force state more complex, so bury land the safety of pipeline very important, once occuring damage, consequence is very serious. Lose windpipe road starting a hole is the common phenomenon in project, this paper is that this kind of project problem offers a guarantee and specification theoretically , guides the various normal reliable operations after transport the medium pipeline schoolwork and starting a hole of starting a hole , major content includes some following aspects: 1 , Introduce to bury land pipeline in not normal load ( foundation hollow) get forcecondition and general calculation formula;2, For burying land, pipeline tape presses the strength problem after starting a hole , adopts mechanics analysis method, have established 3 kinds of different mechanics model and analyse and calculate respectively, have put forward major influencing factor and data;3 , With the finite element method, apply the finite element program ANSYS , have established the finite element model of pipeline and connector , imitate pipeline with connector in bear the loads such as dead weight, vertical earth pressure, ground vehicle year and internal pressure take off , law and the distribution condition of many stress weights, and with theoretical analysis result compare , verify the reasonability of model;4, Put forward stress correction coefficient, make theoretical calculation worth moreaccord with operating condition;5, Through Visual C++ carry out programming, it is simple to make calculate analysis , convenience, and then will its a mature software for special purpose of perfecting.