铰缝作为传递竖向剪力的关键构件，对空心板桥横向传力机制有重要的影响，本

铰缝作为传递竖向剪力的关键构件，对空心板桥横向传力机制有重要的影响，本文以Midas为基础建立了19.6米跨径的空心板桥有限元模型，分别对1#~6#铰缝在跨中部位进行0m~20m不同损伤程度的数值模拟，汇总了相应工况下板梁的横向分布影响线，提出了基于铰缝协同工作系数ƒ的铰缝损伤判别方法，对不同铰缝状态进行了等级划分（完好、轻微损伤、中等损伤、严重损伤、完全失效），建立了铰缝协同工作系数关于损伤度、错台、开合和挠度比等指标的数学模型，并通过实测数据对铰缝性能进行评估。

铰缝作为传递竖向剪力的关键构件，对空心板桥横向传力机制有重要的影响，本文以Midas为基础建立了19.6米跨径的空心板桥有限元模型，分别对1#~6#铰缝在跨中部位进行0m~20m不同损伤程度的数值模拟，汇总了相应工况下板梁的横向分布影响线，提出了基于铰缝协同工作系数ƒ的铰缝损伤判别方法，对不同铰缝状态进行了等级划分（完好、轻微损伤、中等损伤、严重损伤、完全失效），建立了铰缝协同工作系数关于损伤度、错台、开合和挠度比等指标的数学模型，并通过实测数据对铰缝性能进行评估。

Hinge joint is the key component to transfer the vertical shear force, which has an important influence on the transverse force transmission mechanism of hollow slab bridge. Based on Midas, a finite element model of 19.6m span hollow slab bridge is established in this paper. The numerical simulation of different damage degree of 1 × 6 × hinge joint in the middle part of the span is carried out, and the influence line of transverse distribution of slab beam under the corresponding working condition is summarized. Based on the hinge joint cooperation, the paper puts forward a new method to simulate the damage degree of 1 × 6 × hinge joint in the middle part of the span Based on the method of hinge joint damage identification, the different hinge joint states are classified (intact, slight damage, medium damage, serious damage, complete failure), the mathematical model of hinge joint cooperative working coefficient is established, which includes damage degree, staggering, opening closing and deflection ratio, and the hinge joint performance is evaluated by the measured data.<br>