Unable to join line bodies

Hi, I am looking to analyze a bus structure and I had modeled as a line body

However, when i zoomed in and check the model, I realized that some of the lines are not joined together which I am afraid will affect my analysis.

1 more thing is I am looking to analyse it using ANSYS but i cant seems to save it as a file that can be read in ANSYS Workbench - Geometry

Please help !!

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