论文部分内容阅读
上跨既有铁路施工中,由于铁路运营繁忙,施工时要求能快速的跨越铁路,且不能在铁路上方有现浇作业,唐山市建华东道道路改建工程主桥1#施工采用点式滑道,多点顶推法施工。本工程顶推的特点是:顶推轨迹为平曲线,顶推过程中结构空间受力明显,很好地解决了柔性墩受力、平曲线顶推过程中的导向及纠偏问题。同时对顶推的支承、滑动、钢导梁、顶推牵引索及动力等系统加以介绍。
In the existing railway construction on the upper span, due to the busy operation of the railway, it is required to be able to rapidly cross the railway during construction, and can not be cast-in-place at the top of the railway. The 1 # construction of the main bridge of Jianhua Road, Tangshan City, , Multi-point push construction. The characteristics of this project are as follows: the pushing trajectory is a flat curve, and the structural space is obviously stressed in the pushing process, which well solves the problems of guiding and correcting the deflection of the flexible piers in the process of pushing and pushing the flat curve. At the same time on the thrust support, sliding, steel beams, pushing the traction cable and power systems to be introduced.