CAJ | 학술논문

为研究小号码道岔扳动力随密贴刚度的变化规律，解决小号码道岔扳动力偏大的问题，基于变分形式的最小势能原理，建立尖轨和心轨的转换有限元模型，研究了随钢轨密贴段刚度变化，尖轨和心轨扳动力的变化规律。结论：钢轨的密贴段刚度较小时，钢轨密贴段刚度对牵引扳动力的影响可以忽略不计，密贴段刚度达到104 N/m后，牵引点的扳动力随钢轨密贴段刚度的增大有一个较大幅度的增长，降低扳动力能够为小号码道岔使用小功率的转辙机提供基础条件。
위연구소호마도차반동력수밀첩강도적변화규률，해결소호마도차반동력편대적문제，기우변분형식적최소세능원리，건립첨궤화심궤적전환유한원모형，연구료수강궤밀첩단강도변화，첨궤화심궤반동력적변화규률。결론：강궤적밀첩단강도교소시，강궤밀첩단강도대견인반동력적영향가이홀략불계，밀첩단강도체도104 N/m후，견인점적반동력수강궤밀첩단강도적증대유일개교대폭도적증장，강저반동력능구위소호마도차사용소공솔적전철궤제공기출조건。
The aim of this study was to ascertain the change rule of switching force of small-sized turnout with the change of closure section's stiffness, so as to solve the problem of excessive switching force of small-sized turnout. Based on the theory of minimum potential energy, this study built the finite element models about switch rail's transition and frog rail's transition, and researched the change rules of the switching forces of switch rail and frog rail with the change of closure section's stiffness. Then this study came to the conclusion:when the closure section's stiffness was small, it had a negligible effect on the switching force of traction point;after the closure section's stiffness reached up to 104 N/m, there would be a considerable increase of the switching force of traction point with the increase of closure section's stiffness;reducing the switching force would lay a foundation for using small power switch machine in small-sized turnout.