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针对槽型梁和桥面板组合梁桥的结构特点,分析了该桥型的常见病害及产生原因。以某桥为例,对桥面板的受力状态进行了分析。结果表明,桥面板的安全储备较低,在分离模式中承载能力不满足设计荷载要求。据此提出了一种改变结构受力形式的加固方法,能有效地提高桥梁的承载能力。
According to the structural characteristics of the composite girder bridge with trough beam and bridge deck, the common defects and causes of the bridge are analyzed. Taking a bridge as an example, the stress state of bridge deck is analyzed. The results show that the deck has a low safety margin, and the carrying capacity does not meet the design load requirements in the separation mode. Based on this, a reinforcement method to change the form of the structure stress is proposed, which can effectively improve the carrying capacity of the bridge.