CAJ | 학술논문

为了恢复线路平顺状态，某线采用大调量扣件调整轨面高程。通过对大调量扣件地段轨道动力响应测试结果分析，评价其使用效果。分析结果表明，各评价指标均在安全限值之内；轮轨水平力、轮重减载率等指标随列车通过速度增大而增大；增加扣件调高量对轮轨垂直力、轮轨水平力以及脱轨系数的影响较小，但钢轨轨底横向位移、轮重减载率有增大趋势；在曲线段采用大调量扣件会导致钢轨轨头横向位移、轮重减载率和脱轨系数明显增大，建议在曲线地段扣件调高量不宜过大。
위료회복선로평순상태，모선채용대조량구건조정궤면고정。통과대대조량구건지단궤도동력향응측시결과분석，평개기사용효과。분석결과표명，각평개지표균재안전한치지내；륜궤수평력、륜중감재솔등지표수열차통과속도증대이증대；증가구건조고량대륜궤수직력、륜궤수평력이급탈궤계수적영향교소，단강궤궤저횡향위이、륜중감재솔유증대추세；재곡선단채용대조량구건회도치강궤궤두횡향위이、륜중감재솔화탈궤계수명현증대，건의재곡선지단구건조고량불의과대。
A new type of rail fastening of large adjustment range is used on a high-speed railway line to maintain track regularity. In order to evaluate its effectiveness, a test of track dynamic response is conducted on the section equipped with WJ-7 fastenings of large adjustment range. The results show that each index is within the limit; indexes of wheel/ rail lateral force and reduction rate of wheel load increase with the increase of train speed; increasing adjustment range of fastenings has minor effect on wheel/ rail vertical force, wheel/ rail lateral force and derailment coefficient; rail base lateral displacement and reduction rate of wheel load increase with the adjustment range extended; rail head lateral displacement, reduction rate of wheel load and derailment coefficient increase obviously on curve sections equipped with fastenings of large adjustment range. Therefore, adjustment range should not be excessively large on curve sections.