铁道标准设计
鐵道標準設計
철도표준설계
RAILWAY STANDARD DESIGN
2014年
2期
58-60
,共3页
铁路桥%梁式桥%单线桥%双线桥%曲线布置
鐵路橋%樑式橋%單線橋%雙線橋%麯線佈置
철로교%량식교%단선교%쌍선교%곡선포치
railway bridge%girder bridge%single-track bridge%double-track bridge%curve layout
双线铁路梁式桥在位于单线逐渐过渡到双线的线路上时，其过渡段梁的曲线布置往往比较复杂。合理利用标准简支梁的适用条件，按线间距的大小调整过渡段的孔跨布置形式，对过渡段的每孔梁分别按梁端最大线间距等宽度布置，在不影响结构整体安全性的前提下，解决了单线至双线过渡段简支梁的曲线布置问题，避免了繁琐的曲线布置计算。
雙線鐵路樑式橋在位于單線逐漸過渡到雙線的線路上時，其過渡段樑的麯線佈置往往比較複雜。閤理利用標準簡支樑的適用條件，按線間距的大小調整過渡段的孔跨佈置形式，對過渡段的每孔樑分彆按樑耑最大線間距等寬度佈置，在不影響結構整體安全性的前提下，解決瞭單線至雙線過渡段簡支樑的麯線佈置問題，避免瞭繁瑣的麯線佈置計算。
쌍선철로량식교재위우단선축점과도도쌍선적선로상시，기과도단량적곡선포치왕왕비교복잡。합리이용표준간지량적괄용조건，안선간거적대소조정과도단적공과포치형식，대과도단적매공량분별안량단최대선간거등관도포치，재불영향결구정체안전성적전제하，해결료단선지쌍선과도단간지량적곡선포치문제，피면료번쇄적곡선포치계산。
When a double-track railway girder bridge is situated at a transition section where the single-track is gradually transited to the double-track, the curve layout of the girder is generally much more complicated. In this paper, the service condition of the standard simple girders was fully utilized, the span layout on the transition section was adjusted according to the distance between centers of tracks, and each girder span on the transition section was laid out with equal widths respectively according to the maximum distance between centers of tracks at the girder end. As a result, the curve layout problem of simply-supported girder on transition section from single-track to double-track was able to be solved on the premise of not affecting the overall safety of the structure, and also the tedious curve layout calculation was able to be avoided.
