Abstract: The?bearer?structures?of?casting?girder?bridges?in?place?are?various?and?proper?bearer?structure?can?ensure?the?safety?and?quality?of?construction.?Taking?the?design?and?construction?of?casting?30m?bearer?of?Xishangou?Bridge?U?as?case?study,?the?principle?is?demonstrated?;?secondly,?the?proper?construction?structure?should?be?applied?with?the?full?consideration?of?the?influence?of?bearer?sedimentation;?and?during?the?construction,?experiment?measures,?such?as?pre-pressing?are?applied?to?eliminate?the?non-elastic?deformation?and?to?detect?elastic?deformation?of?the?bearer.

Key words: bearer , optimal selection , lifting , pre-press , cast ;

摘要： 现浇梁桥支架结构丰富多样,合理的支架结构是施工安全、施工质量的重要保证。西山沟??号大桥30m连 续现浇箱梁支架的设计与施工,采用合理的施工结构形式,充分考虑支架沉降带来的影响。在施工过程中,通过预 压等实验手段,消除支架的非弹性变形,检测支架的弹性变形。

关键词: 支架, 优选, 吊装, 预压, 浇筑