潘家口水库防汛上坝公路洒河桥加固改造设计

Reinforcement design for Sahe Bridge on flood control dam access road of Panjiakou Reservoir

总结介绍了潘家口水库防汛上坝公路洒河桥的加固改造设计理念。将原公路桥荷载标准(汽车-15级、挂车-80)提高到能基本满足现状公路通行的荷载标准;对原铁路桥大梁采用容许应力法进行加固计算,采用在顶面及两侧进行粘钢加固;重新设计了在铁路桥基础上改建的原公路桥桥面板结构;对原铁路桥墩台及基础灌注端承桩等下部结构采用与原列车荷载进行类比验算。本文可供设计单位在作类似结构加固改造设计时提供参考。

This text introduces the reinforcement design concept of Sahe Bridge on flood control dam access road of Panjiakou reservoir.In the design,the load standard of the original highway bridge（grade 15 for car,grade 80 for trailer） is increased to the level which can basically satisfy the present road transportation. The beam of original railway bridge is calculated with allowable stress method and reinforced with steel plate on top surface and both sides.The bridge deck structure of the original highway bridge rehabilitated on the failway bridge is also redesigned,and analog checking computation to the original train load is carried out to the substructures of the original bridge pierand foundation grouted end-bearing pile.It is only a brief inrtoduction as reference for reinforcement design of projects with similar structures.