季冻区盘扣式脚手架黏土冻胀控制研究——以哈尔滨某咽喉区工程为例

Research on Clay Frost Heave Control of Buckled Scaffold in Seasonal Frozen Area——Taking a Throat Area Project in Harbin as an Example

季冻区黏土在冬季会发生明显冻胀并引起地面变形,上部咽喉区的盘扣式脚手架受力较复杂,加上黏土冻胀的影响,会导致脚手架出现部分变形。文章以哈尔滨某咽喉区工程为例,为控制脚手架冻胀变形,对地面加铺碎石层及脚手架底托和可旋底座,并对脚手架变形情况进行监测。结果表明,该控制方法可保证咽喉区盘扣式脚手架在冬季黏土冻胀下安全使用。

The clay in the seasonal frozen area will cause obvious frost heave and ground deformation in winter. The force of the buckled scaffold in the upper throat area is complex, and the influence of clay frost heave will lead to partial deformation of the scaffold. This paper takes a throat area project in Harbin as an example. In order to control the frost heave deformation of the scaffold, the ground is covered with gravel layer, the scaffold base support and the rotatable base, and the deformation of the scaffold is monitored. The results show that this control method can ensure the safe use of buckled scaffold in throat area under clay frost heave in winter.