Calculating theory of railway welded turnout based on generalized variational principle

LI Qiu-yi; CHEN Xiu-fang

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LI Qiu-yi, CHEN Xiu-fang. Calculating theory of railway welded turnout based on generalized variational principle[J]. Journal of Traffic and Transportation Engineering, 2003, 3(1): 21-24.

Citation:

LI Qiu-yi, CHEN Xiu-fang. Calculating theory of railway welded turnout based on generalized variational principle[J]. Journal of Traffic and Transportation Engineering, 2003, 3(1): 21-24.

LI Qiu-yi, CHEN Xiu-fang. Calculating theory of railway welded turnout based on generalized variational principle[J]. Journal of Traffic and Transportation Engineering, 2003, 3(1): 21-24.

Citation:

LI Qiu-yi, CHEN Xiu-fang. Calculating theory of railway welded turnout based on generalized variational principle[J]. Journal of Traffic and Transportation Engineering, 2003, 3(1): 21-24.

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Calculating theory of railway welded turnout based on generalized variational principle

School of Civil and Architectural Engineering, Central South University, Changsha 410075, China

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Author Bio:
LI Qiu-yi(1972-), male, a doctoral student of Central South University, engaged in research of road and railway engineering
Received Date: 2002-09-15
Publish Date: 2003-03-25

Abstract

Abstract

Based on existing experimental data and energy variation principle, generalized variational principle is applied to analyze railway welded turnout structures, and a new method of calculating welded turnout structures is presented. It builds a consummate calculation model, sleeper is regarded as finite long beam on continuous elastics base, and the relation between rail forces and sleeper displacements is established by analysis of sleeper forces. On the basis of supposing rail displacements function, energy of welded turnout structures is computed. By means of generalized variational methods the equilibrium equation is derived. A calculation program is worked out, the additional temperature forces and the expanding and contracting displacements of the inner rails are analyzed.
- generalized variational principle,
- energy principle,
- railway welded turnout

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References(10)

References

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