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梯弧形断面是一种适应冻胀变形防止冻胀破坏的有效断面形式，在我国西北、东北的一些强冻胀地区得到了成功地应用。本文通过对本地区常用的梯形断面冻胀破坏形式的成因分析。论证了梯弧形断面的适变特点，分析了该断面在我省推广应用的可行性。
Trapezoidal cross-section is a kind of effective cross-section to adapt frost heave deformation to prevent frost heave and destroy. It has been successfully applied in some areas of strong frost heave in the northwest and northeast of our country. In this paper, through the analysis of the causes of frost heave in the trapezoidal section commonly used in this area. The adaptability of arc-shaped section is demonstrated, and the feasibility of its application in our province is analyzed.