铁道学报
鐵道學報
철도학보
2014年
7期
90-95
,共6页
余自若%袁媛%张远庆%时瑾
餘自若%袁媛%張遠慶%時瑾
여자약%원원%장원경%시근
高速铁路%扣件%弹条%疲劳寿命
高速鐵路%釦件%彈條%疲勞壽命
고속철로%구건%탄조%피로수명
high-speed railway%fastening system%elastic bar%fatigue life
高速铁路扣件长期在动载作用下工作,为保证其正常使用,对扣件系统中的弹条进行疲劳性能研究是非常有必要的。本文通过考虑弹条与扣件系统其他部分之间的接触作用,对 X2型弹条在不同扣压力作用下的静力及疲劳性能进行了研究,获得了弹条在不同扣压力下的应力特征,重点研究了疲劳荷载作用下弹条的疲劳寿命及疲劳破坏危险点位置。考虑钢轨横向力的作用,计算分析了考虑水平力作用下的弹条疲劳寿命,并对荷载频率对弹条性能的影响进行了讨论。
高速鐵路釦件長期在動載作用下工作,為保證其正常使用,對釦件繫統中的彈條進行疲勞性能研究是非常有必要的。本文通過攷慮彈條與釦件繫統其他部分之間的接觸作用,對 X2型彈條在不同釦壓力作用下的靜力及疲勞性能進行瞭研究,穫得瞭彈條在不同釦壓力下的應力特徵,重點研究瞭疲勞荷載作用下彈條的疲勞壽命及疲勞破壞危險點位置。攷慮鋼軌橫嚮力的作用,計算分析瞭攷慮水平力作用下的彈條疲勞壽命,併對荷載頻率對彈條性能的影響進行瞭討論。
고속철로구건장기재동재작용하공작,위보증기정상사용,대구건계통중적탄조진행피로성능연구시비상유필요적。본문통과고필탄조여구건계통기타부분지간적접촉작용,대 X2형탄조재불동구압력작용하적정력급피로성능진행료연구,획득료탄조재불동구압력하적응력특정,중점연구료피로하재작용하탄조적피로수명급피로파배위험점위치。고필강궤횡향력적작용,계산분석료고필수평력작용하적탄조피로수명,병대하재빈솔대탄조성능적영향진행료토론。
Fastenings of high-speed railways are operated under long-term dynamic loading.To ensure the nor-mal use of the fastenings,it is most essential to study the fatigue properties of elastic bars of the fastening sys-tems.By taking into account of contact between elastic bars and other parts of the fastening system,the static and fatigue performance of Elastic Bar X2 under different clamping forces was studied in this paper.The stres-ses and stress distribution of the elastic bar were found.The fatigue life and the position of the danger point of the fatigue failure of the elastic bar under fatigue loading were mainly investigated.The fatigue life of elastic bar was calculated in consideration of lateral horizontal loading of rails and the influence of loading frequenies on fatigue performance of elastic bars was discussed.