中文摘要：

为了研究桥面板分片子结构模态柔度综合的理论和实现方法,对2种进行动力计算分析模态柔度的方法以及其一致性进行了介绍。利用这2种方法获取不同子结构的质量归一的振型,并对子结构振型进行拼接得到整体结构的振型,进一步得到整体结构模态柔度（称为分片子结构模态柔度综合技术）。通过简支混凝土板的数值试验和实际钢-混凝土组合梁桥的真实试验,验证了利用分片子结构模态柔度综合技术测试识别桥面板模态柔度的可行性。在进行分片子结构模态测试的基础上,将单点输入多点输出（SIMO）子结构综合的模态参数与多点输入多点输出（MIMO）得到的整体结构模态参数进行比较。结果表明：单点输入单点输出（SISO）、SIMO和MIMO方法均能准确获取桥梁结构激励点的模态柔度系数,并能通过子结构振型拼接的方法获得与静力方法相差很小的模态柔度矩阵,可作为传统卡车加载测试有效补充的新型桥梁测试方法。

英文摘要：

In order to research sub-structural modal flexibility integration theory and implementation, two dynamic calculation methods of modal flexibility and their consistency were introduced. Mass normalized vibration modes of different sub-structures could be got by the two methods, and the whole structural vibration mode could be obtained by combining two sub- structural vibration modes. Further more, the whole structural modal flexibility could be got, which was called sub-structural modal flexibility integration technique. The feasibility of recognizing bridge deck modal flexibility by using sub-structural modal flexibility integration test was verified through a numerical test of simply supported reinforced concrete slab and a real test of steel-concrete composite beam bridge. Based on the sub-structural modal test, sub-structural integration modal parameters with single input multiple output （SIMO） could be compared with whole structural modal parameters with multiple input multiple output （MIMO）. The results show that single input single output （SISO）, SIMO and MIMO can be used on the exciting point of real bridge to obtain the modal flexibility coefficient accurately. The modal flexibility matrix got by the method of combining two sub-structural vibration modes has a small difference with that of static test. The presented method can be used as a beneficial supplement for traditional truck loading test in an efficient and economic way.