The optimization design of urban rail transit installation engineering achieves multi-professional pipeline spatial coordination layout and construction technology innovation through the construction of BIM-based 3D collaborative platforms and intelligent design standards. Key technologies include prefabricated integration

comprehensive optimization of safety system optimization

and standardized design of strong and weak current supports and others. Empirical analysis shows that the optimized design scheme significantly improves the construction efficiency

shortens the construction period by 18%

reduces design changes by 80%

lowers the rework rate by 75%

and saves the comprehensive cost by 12.5%. This technology has broad promotion prospects in domestic and international rail construction

and is expected to generate over 7 billion yuan in economic benefits during the "15th Five-Year Plan" period.