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

As a key component for transmitting vertical shear force, the hinge joint has an important influence on the lateral force transmission mechanism of the hollow slab bridge. Based on Midas, this paper established a 19.6-meter span finite element model of the hollow slab bridge. #Reinforcement numerical simulation of different damage degrees from 0m to 20m at the mid-span position, summarizes the lateral distribution influence line of the plate beam under the corresponding working conditions, and proposes a method for judging the damage of the joint based on the joint work coefficient The state of the joints is classified (intact, slight damage, medium damage, severe damage, complete failure), and the mathematical model of the joint working coefficient of the joints on the indicators of damage, stagger, opening and closing, and deflection ratio is established and passed The measured data evaluates the joint performance.

As a key component of the transfer vertical shear force, the hinged has an important influence on the lateral transfer mechanism of the hollow plate bridge, and based on Midas, a 19.6-meter cross-diameter hollow plate bridge finite element model is established, and the numerical simulation of the different damage levels of 0m to 20m of the cross-section is carried out, respectively, and summarizes the plate beam under the corresponding working conditions. The horizontal distribution influence line, the articulation damage discrimination method based on the hinge co-operation coefficient, the classification of different hinged states (intact, minor damage, moderate damage, serious damage, complete failure), the mathematical model of the articulation co-operation coefficient on the indicators of damage, fault, opening and deflection ratio, and the evaluation of the reaming performance by the measured data.

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>