CAJ | 학술논문

太原至中卫至银川铁路文水至靖边段位于吕梁山脉及陕北黄土高原，设计速度200 km/h，铺设跨区间无缝线路有砟轨道。为适应复杂的地形，共有3个车站的4座桥上设置了道岔。桥梁设计时结合具体情况，采用了不同的桥式方案及施工方法。各桥的孔跨布置满足无缝线路道岔的布设原则；对道岔梁采用结构设计软件进行分析，各项指标能满足无缝线路道岔的变形要求。并解决了预应力混凝土箱梁顶板大悬臂剪力滞效应、道岔梁桥墩及基础纵向总刚度与无缝线路道岔受力适应性、桥面及底板变宽连续箱梁支座横向布置等技术难题。经实际运营检验，能保证列车通过时的安全性、舒适性和平稳性。
태원지중위지은천철로문수지정변단위우려량산맥급협북황토고원，설계속도200 km/h，포설과구간무봉선로유사궤도。위괄응복잡적지형，공유3개차참적4좌교상설치료도차。교량설계시결합구체정황，채용료불동적교식방안급시공방법。각교적공과포치만족무봉선로도차적포설원칙；대도차량채용결구설계연건진행분석，각항지표능만족무봉선로도차적변형요구。병해결료예응력혼응토상량정판대현비전력체효응、도차량교돈급기출종향총강도여무봉선로도차수력괄응성、교면급저판변관련속상량지좌횡향포치등기술난제。경실제운영검험，능보증열차통과시적안전성、서괄성화평은성。
Wenshui-Jingbian line of Taiyuan-Zhongwei-Yinchuan railway,a ballast jointless track with designed speed of 200 km/h,goes through Luliang Mountains and northern Shanxi Loess Plateau.In order to adapt to the complex terrain, turnouts were installed on four bridges near three stations.Combined with the specific circumstances of each project site, the bridges were designed using different structures and construction methods.The arrangement of spans for each bridge meets the laying principles of welded turnout.MIDAS and BSAS software is employed to ensure analysis for each turnout girder.All indexes met the requirements of the deformation of welded turnout while addressing the shear lag effect on top plate large cantilever of pre-stressed concrete box,adaptability of turnout girder piers and the total longitudinal stiffness of base to welded turnout stress,lateral arrangement of bridge floor and continuous box girders with widened baseboard as well as other technical problems.The actual operation indicates the bridges can ensure a safe,comfortable and smooth running.