Guide beam mounting structure and method for steel box beam incremental launching construction: Fid-Bau Portal

Guide beam mounting structure and method for steel box beam incremental launching construction

WANG ANWEN / WU RUI / LIU YUJIA

The invention provides a guide beam mounting structure and method for incremental launching construction of a steel box beam, the rear end of a guide beam is welded to the front end of the steel box beam, the two sides of the top of the rear end of the guide beam and the two sides of the top of the front end of the steel box beam are each welded with at least two reinforcing devices in the longitudinal direction, and each reinforcing device comprises two reinforcing plates which are vertically arranged and parallel to each other; a bayonet is formed from the middle to the bottom of each reinforcing plate, a connecting plate is welded to each of the two sides of the two reinforcing plates, and a profile steel reinforcing beam is inserted into the bayonets of the reinforcing devices on the same side of the guide beam and the steel box beam in a penetrating mode. When the guide beam is installed and constructed, the preliminary fixation of the guide beam is achieved through the reinforcing device, then welding construction of the guide beam and the steel box beam is conducted, a support does not need to be erected, the cost can be saved, and the installation speed can be increased. The reinforcing devices and a welding structure are stressed together, and the connection reliability of the guide beam and the steel box beam can be improved.

本发明提供的用于钢箱梁顶推施工的导梁安装结构及方法，导梁后端与钢箱梁前端焊接，并且导梁后端和钢箱梁前端顶部两侧沿纵向分别焊接至少两个加固装置，每个加固装置包括两块竖向设置且相互平行的加固板，每块加固板的中间到底部开设一卡口，两加固板的两侧分别焊接一连接板，导梁和钢箱梁同一侧的各加固装置的卡口中穿插一型钢加固梁。在导梁安装施工时，先由加固装置实现导梁的初步固定，然后进行导梁与钢箱梁的焊接施工，不用搭设支架，能节约成本，加快安装速度。加固装置与焊接结构共同受力，能增加导梁与钢箱梁的连接可靠性。

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