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在寒冷地区,挡土墙受冻胀破坏是十分严重的。特别是渠系水工建筑物的挡土墙,它们多建于松软土基上,在凉融作用下,墙体常常发生上抬、倾斜、断裂等冻害现象。有关调查资料表明,渠系水工建筑物挡土墙的冻害破坏约占挡土墙总数的三分之一左右。因此,调查了解现有渠系水工建筑物挡土墙的冻害情况,研究分析软基上水工挡土墙冻融破坏的基本规律,总结整理现有防治挡土墙冻害的成功经验是非常必要的。
In cold regions, the frost damage to the retaining wall is very serious. In particular, the retaining walls of hydraulic structures in canal systems are mostly built on soft soil foundations. Under cooling and thawing, the walls often undergo freezing, tilting, and fractures. Relevant survey data shows that the frozen damage of the retaining wall of canal hydraulic construction buildings accounts for about one-third of the total number of retaining walls. Therefore, investigate and understand the cold damage situation of retaining walls of existing canal hydraulic structures, study and analyze the basic laws of freeze-thaw damage of hydraulic retaining walls on soft foundations, and summarize the successful experience of the existing prevention and control of the freezing damage of retaining walls. necessary.