Abstract: For the evaluation of underground glass steel sand inclusion pipe culvert safety, ensure the safety of road traffic and transportation, according to the theoretical analysis as the foundation, field test method using, comprehensive analysis of ground vehicle load and the vertical soil pressure spread to highway of buried steel fiber glass sand inclusion tube of force and pipe culvert by force deformation characteristics, and then regression prediction calculation of values of the mechanical parameters of 1200 kN load model, verifying tube culvert operational safety. Results show that: theoretical calculation and field test are compared and verified the vehicle loads with a diameter of 1.5 and 38 mm thick glass reinforced plastic mortar pipe of safety and reliability, glass steel clip Sand pipe design to provide scientific theory basis.

Key words: glass fiber reinforced plastic mortar pipe, vehicle load, stress characteristics, safety evaluation