在季节性冻土层中,当土壤冻胀时对构筑物产生的上拔为,又称冻拔力。它与土的性质和含水量有关。根据《公路桥涵设计规范》规定:“为保证桥涵在严重冻胀土中 In seasonal frozen soil, when the soil frost heave on the structure produced by the pull, also known as frozen force. It is related to the nature and water content of the soil. According to the ”Code for Design of Bridges and Culverts of the Highway“, it is stipulated that: ”In order to ensure bridge and culvert in severe soil swell