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挡土墙是水利水电工程中不可缺少的重要建筑物,其是否稳定会影响整个水利工程的安全。在以往的水工挡土墙设计过程中,设计人员往往凭经验处理冻胀问题。北京地区地处三级冻胀区域,冬冻春融变化明显,要做到水工建筑物的安全可靠、经济合理,对其进行抗冻胀计算就显得尤为重要。在阐述水工挡土墙冻胀原理及其冻害的基础上,提出了抗冻胀计算的步骤、布置原则及应采取的措施,并通过实例分析了冻胀的产生及其稳定计算过程。
Retaining wall is an indispensable important building in water conservancy and hydropower project. If it is stable, it will affect the safety of the entire water conservancy project. In the past, the design of the retaining wall of hydraulic retaining wall, designers often deal with frost heaving problems. Beijing area is located in three frost heave area, winter freeze spring melt changes significantly, to be safe and reliable hydraulic structures, economical and reasonable, its frost heave calculation is particularly important. On the basis of expounding the principle of frost heave of hydraulic retaining wall and its frostbite, the calculating steps, layout principles and measures to be taken for anti-frost heave are put forward. The generation of frost heave and its stability calculation process are analyzed through examples.