加固后的在役高原钢筋混凝土拱桥动力测试分析评价研究

Study on Dynamic Test Analysis and Evaluation of Reinforced Concrete Arch Bridge in Service on Plateau after Reinforcement

随着我国国民经济的不断提高,基础建设投入越来越大。我国的公路桥梁建设数量已超过80万座,高铁桥梁累计超过1万公里。越来越多的在役桥梁已经达到或超过其设计服役期,加之通行车辆标准的提高。部分桥梁已经不能满足现行的通行承载能力和安全要求。因此,需要对不满足使用要求的桥梁进行加固维修,以保证桥梁使用的安全。本文以加固后的高原地区扎曲河上承式钢筋混凝土拱桥动力测试分析为基础,研究了该桥加固后的动力参数,为加固后的桥梁使用和养护提供参考依据。

With the continuous improvement of China's national economy,investment in infrastructure is increasing.The number of highway bridges in China has exceeded 800,000,and the total number of high-speed railway bridges has exceeded 10,000 kilometers.More and more bridges in service have reached or exceeded their designed service life,together with the improvement of the standard of traffic vehicles.Some bridges have been unable to meet the current carrying capacity and safety requirements.Therefore,it is necessary to reinforce and repair bridges that do not meet the requirements of use in order to ensure the safety of bridge use.Based on the dynamic test and analysis of Zhaqu River deck reinforced concrete arch bridge in plateau area after reinforcement,the dynamic parameters of the bridge after reinforcement are studied,which can provide reference for the use and maintenance of the bridge after reinforcement.