索力是决定吊杆拱桥能否安全运营的关键因素之一,鉴于索力测试频次的限制,建立索力状态预测方法是十分有意义的。把全桥多根吊杆索力的测试值与设计值之间的灰色关联度作为全桥索力状态的评价指标,认为灰色关联度为平稳数据序列,形成了基于时间序列的全桥索力状态预测模型。最后以一座吊杆拱桥为工程依托,验证了方法的有效性和可行性。 Cable force is one of the key factors to decide whether the boom arch bridge can operate safely. In view of the limitation of cable test frequency, it is very meaningful to establish the cable load state prediction method. Taking the gray relational degree between the test value and the design value of the cable force of multiple suspenders in the whole bridge as the evaluation index of the cable force state in the whole bridge, the gray relational degree is considered as the stable data sequence, and the full bridge cable force State prediction model. Finally, with a boom arched bridge as an engineering support, the effectiveness and feasibility of the method are verified.