Abstract:Aiming at the safety issues of the new gas pipeline undercrossing high-speed railway project, the risk analysis method is used to carry out the qualitative and quantitative safety risk assessment of the potential risk factors (hazard sources) existing in the construction and operation state of the new pipeline to the railway operation. The risk communication and expert investigation methods are used for the qualitative analysis. The finite element analysis software MIDAS-GTS is used to establish a three-dimensional spatial model to simulate the soil excavation and backfill and other conditions for the quantitative analysis. According to the calculation results, the influence of the whole construction process on the railway pier is analyzed to judge whether the safety risk exists, and to identify compliance with the relevant code standards. The safety of the railway pier foundation is evaluated, and the overall countermeasures to prevent risks are put forward.
