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三股线高架桥运营后出现了主梁跨中下挠、裂缝等严重影响结构的耐久性和运营安全的病害,针对以上病害,对三股线高架桥进行了体外预应力加固、张拉锚固及转向装置、腹板和顶板粘钢加固等设计。为了全面把握三股线高架桥加固后的运营状况和桥梁损伤程度,建立了三股线高架桥远程应力监测系统,监测桥梁结构应力超限或应力异常重分布情况,以期实时把握三股线高架桥的服役状态,为桥梁结构制定安全防控措施和养护方案提供有力依据。
After the operation of the three-strand viaduct, the main girder spanning mid-scale deflection, cracks and other serious problems that affect the durability and operational safety of the structure occurred. In view of the above diseases, the three-strand viaduct was reinforced in vitro by prestress, tensioning and steering, Web and roof glued steel reinforcement design. In order to comprehensively grasp the operational status of the three-lane viaduct and the damage degree of the bridge, a three-strand viaduct remote stress monitoring system is established to monitor the over-stress or abnormal-stress redistribution of the bridge structure in order to grasp the service status of the three- Bridge structure to develop safety control measures and conservation programs provide a strong basis.