Research Article

Freezing Damage Control of Railway Subgrade Miniature Shields in Cold Climatic Regions: Construction Technology Optimization via Numerical Simulation

Table 4

Construction conditions of different lateral directions and different directions.

Segment materialConstruction orderConstruction condition

Steel pipeFrom the sides to the middleCondition 1
Steel pipeFrom the middle to the sidesCondition 2
PE tubeFrom the sides to the middleCondition 3
PE tubeFrom the middle to the sidesCondition 4