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分别采用激光连续式路面平整度仪与水准仪对福鼎桐山大桥的桥面平整度进行了测量,采用最大熵谱法进行桥面平整度的频谱分析,获知了使用激光连续式路面平整度仪测量的优势。对福建省内多座钢管混凝土拱桥的桥面平整度进行了采集和分析,进一步验证了桥面平整度功率谱法与国际平整度指数法的关系方程式的正确性;从主梁型式、主拱跨径、使用年数等方面对钢管混凝土拱桥桥面平整度进行了分析。发现桥面平整度指数随使用年数的递增呈指数形式增大,据此提出了桥面状况与使用年数的关系式,可简便地进行钢管混凝土拱桥桥面状况的预估。
The flatness of the deck of Fuding-Tongshan Bridge was measured by laser continuous pavement smoothness meter and water level meter, respectively. The maximum entropy spectrum method was used to analyze the flatness of bridge deck. The laser continuous flatness meter was used to measure the deck flatness. The advantages. The bridge flatness of several CFST arch bridges in Fujian Province was collected and analyzed, which further validated the correctness of the relationship equation between the bridge flatness power spectrum method and the international roughness index method. From the main beam type, the main arch Span, the number of years of use and other aspects of the CFST arch bridge deck smoothness were analyzed. It is found that the bridge deck roughness index increases exponentially with the number of years of use. Based on this, the relationship between the bridge deck conditions and the number of years of use is proposed, which can be used to estimate the deck conditions of CFST arch bridges easily.