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本文介绍了渠道冻胀模型的设计、制作和试验方法 ;提出了模型试验结果能较好地反映原型渠道的冻结、冻胀特征和规律、模型与原型的冻深、冻胀量呈线性相关 :Hp=1 .51 Hm-51 .2 1、hp=2 .0 2 hm- 3.59,冻胀强度与冻前含水量的关系式同《冻规》中的计算式吻合一致 ,采用渠道冻胀模型试验研究方法 ,认识解决渠道冻胀有关问题是可行的 ;并根据冻胀量在渠道断面上的分布情况 ,对衬砌形式进行受力分析得出 :小 U形渠、弧底梯形渠和弧形坡脚梯形渠的衬砌形式较优 ,梯形渠或大 U形渠的衬砌形式容易产生冻胀破坏
This paper introduces the design, manufacture and test methods of channel frost heave model. It is put forward that the model test results can well reflect the freeze and frost heave characteristics and rules of the prototype channels. The model has a linear correlation with the frost heaving and frost heaving volume of the prototype: Hp = 1.51 Hm-51.21, hp = 2.02 hm-3.59. The relationship between frost heave strength and water content before freezing is in good agreement with the calculation formula in “freeze gauge”, and the channel frost heave model It is feasible to know about the problems related to the frost heaving of the channels. Based on the distribution of frost heave on the cross-section of the channels, the stress analysis on the lining forms shows that the small U-shaped channels, Slope foot trapezoidal canal lining form better, trapezoidal or large U-shaped canal lining easily lead to frost damage