【摘要】 太旧高速公路武宿立交桥跨石太铁路段采用单点顶推法施工工艺,由于预制平台处地基沉降导致顶推持力台产生倾覆变形。本文简要介绍了采用体外预应力束加固顶推持力台的技术构思和施工方案,为处理施工过程中类似问题提供了新的选择与实践经验。更多还原

【Abstract】 The section of Wusu Interchange Spanning Shi-Tai Railway on Tai-Jiu Expressway was constructed by using the direct incremental launching method. The bearing platform for incremental launching resulted in inclination deformation because of the foundation settlement of the precast platform. This paper briefly introduces the technical conceptions and construction schemes of the bearing platform strengthened by external prestressed tendons, which would be helpful for bridge construction.更多还原