CAJ | 학술논문

武汉市姑嫂树路主线高架需要上跨京广铁路等多条铁路线，为避免或减少施工期间及日后维护对铁路运营和地面交通的影响，研究该桥设计方案选型。考虑铁路现状及桥跨布设控制条件，选择与工程实际较适宜的（65＋110＋65） m悬臂浇筑变截面预应力混凝土连续箱梁桥、转体施工变截面预应力混凝土连续箱梁桥、部分斜拉桥3种桥型方案进行对比分析。基于功能性和安全性的考虑，由于转体施工变截面预应力混凝土连续箱梁桥方案仅需在转体期间2～3h内封闭铁路，其余时间对铁路运营无影响，综合经济性、施工难度、养护费用等因素，最终选择采用该方案。
무한시고수수로주선고가수요상과경엄철로등다조철로선，위피면혹감소시공기간급일후유호대철로운영화지면교통적영향，연구해교설계방안선형。고필철로현상급교과포설공제조건，선택여공정실제교괄의적（65＋110＋65） m현비요축변절면예응력혼응토련속상량교、전체시공변절면예응력혼응토련속상량교、부분사랍교3충교형방안진행대비분석。기우공능성화안전성적고필，유우전체시공변절면예응력혼응토련속상량교방안부수재전체기간2～3h내봉폐철로，기여시간대철로운영무영향，종합경제성、시공난도、양호비용등인소，최종선택채용해방안。
The Gusaoshu Road Main Line Viaduct in Wuhan City was required to span Beijing‐Guangzhou Railway and several other railways .To avoid or lessen the possible interference of the viaduct with the railway operation and ground traffic in the construction and future maintenance , the design schemes for the viaduct were studied .In consideration of the current situations of the railways at the viaduct site and the control conditions of span arrangement of the viaduct ,3 types of the bridge schemes that were suitable for the viaduct ,i .e .the (65+110+65) m prestressed concrete continuous box girder bridge with variable section that was to be constructed by the canti‐lever casting ,the prestressed concrete continuous box girder bridge with variable section that was to be constructed by the rotation erection and the extradosed bridge ,were compared and analyzed . In accordance with the requirements for the function and safety of the viaduct and also in compre‐hensive consideration of the factors of the economy ,construction difficulties and future mainte‐nance cost ,the scheme of the prestressed concrete continuous box girder bridge with variable sec‐tion that was to be constructed by the rotation erection was finally chosen since the scheme only re‐quired the closure of the railways for 2~3 hours during the rotation erection and in other time , would cause no inference with the railway operation .