大吨位预制T梁侧向上墩施工技术

Large Weight Precast T Beam Lateral Elevation and Positioning Technology

在山区进行大吨位T梁施工时,T梁安装如何从侧向上墩,是T梁安装的关键技术。结合资阳沱江二桥T梁(30 m和40 m)以及国道318BT4德达特大桥T梁(30 m)的安装施工工艺,简要介绍提升T梁上桥2种方法(组合型钢长短柱上墩门架法和扒杆歪吊法)及其适用条件。

When constructing large weight T beam in mountainous areas, the essential technology in T- beam erection is how to lift up the T - Beam from pier side. Integrating with installation construction process for T beam （30 rn and 40 m） in Ziyang No. 2 Tuojiang Bridge and T - Beam （30 m） for Dedate Bridge on National Road 318 BT4, this paper gives a brief introduction to two T- beam lifting method （combined long and short support gantry crane method and standing derrick incline hoisting method） and application conditions.