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In order to study the variation of transverse load distribution of T-beam bridge with transverse damage under moving load. In this paper, nine kinds of working conditions are proposed for the possible failure modes and the different locations of the failure, and relevant finite element models are established. Through simulation, the lateral load distribution of middle beams under nine working conditions is obtained and compared with that under non-damage condition. The results show that the transverse load distribution capacity of T-beam bridge under moving load will be greatly affected after the transverse connection damage of the diaphragm beam occurs. When the location of transverse damage is different, the influence of T-beam bridge will be different.

In order to study the influence of overload on the transverse load distribution of T-beam bridge, according to the different failure position and failure form of main beam, nine working conditions are divided for finite element simulation, and the transverse distribution value of each main beam under each working condition is obtained, and compared with the value under general load. The results show that: if the bridge transverse connection is damaged, the lateral load distribution capacity of the structure will be reduced again, and the stress form of the structure will become more unreasonable.