城镇直埋供热管道敷设方式同传统的地沟敷设相比具有占地少、施工周期短、维护量小、寿命长等诸多优点,因此目前被广泛采用。但由于受技术限制,无补偿直埋敷设应用较少。本文采用弹塑性理论对直埋供热管线进行应力验算,得出130℃以下供热管线均可采用无补偿直埋敷设方式。 Compared with traditional trench laying, the direct buried urban heating pipe laying method has many advantages, such as less land occupation, shorter construction period, less maintenance and longer service life, so it is widely used at present. However, due to technical limitations, no compensation for direct burial applications less. In this paper, the elastic-plastic theory of direct buried heating pipe stress checking calculation, concluded that the heating pipelines below 130 ℃ can be buried without compensation directly buried way.