农村公路老桥的加固、改造与养护

Reinforcement, Reconstruction and Maintenance of Old Highway Bridge in Rural Area

我国交通运输业的快速发展带动着经济的腾飞,但这也给各级公路与桥梁带来了十分沉重的交通荷载和繁重的交通量,尤其是过去修建的老桥,担负着巨大的压力。浙江省农村公路建设在全国率先完成"乡乡通、村村通公路"目标,随着农村社会经济的快速发展,各种农村客货运车辆载重量和交通量的不断增多,以及桥梁的部分老化等,过去修建的老桥已难以满足现在交通运输的要求。遂昌县现有的公路桥梁大多修建于上世纪八九十年代,由于当时的设计标准规定的设计荷载较低,加之可能建桥时资金紧缺,技术理论不足,设计及施工管理缺乏严谨性,施工设备和原材料落后等原因,使得这些老桥存在着或多或少的问题与缺陷。时至今日,随着各种重型运输车的不断增多,老桥的部分老化等,更使得这些老桥不符合现代交通运输的要求,对老桥的加固、改造迫在眉睫。该文结合遂昌县农村公路老桥改造、加固的实例,阐述了农村公路老桥处理的必要性、经济性,科学的方法,以及这些桥梁日后的管理养护问题。

The rapid development of transportation industry in China drives economic growth,but brings about the very heavy traffic load and traffic volume to various highways and bridges,and especially the built old bridges have to bear the huge pressure.With the rapid development of social economy in the rural areas of Zhejiang Province,the continuous increment of the capacity tonnages of various passenger and freight transport vehicles and the traffic volume,and the partial aging bridges,the old built bridges are hard to satisfy the requirements of the present transportation.The most existing highway bridges were built in eighty or ninety age in Suichang County.The factors of lower design load,limited fund,insufficient technical theory,no careful design and construction management,backward construction equipment and raw materials etc.make these old bridges fault,and even more make these old bridges not satisfy the requirements of the modern transportation.It is urgently to reinforce and reconstruct the old bridges.According to these practices,the article describes the necessity,economy and scientific method to treat the old highway bridges in rural area,and the following management and maintenance of these bridges.