【摘要】 为研究深度不同的纵缝设置在渠道不同部位处后对冻胀量的影响,利用有限元分析软件AN SYS对陕西塬下北干渠的"U"型刚性衬砌渠道在阴、阳、底位置段处设置通缝、半缝或不设缝进行渠道温度场、位移场的数值模拟。经模拟计算后得出不同深度的纵缝对渠底冻胀量的影响不大,对阴、阳坡段会有一定影响。经综合分析比较,对于"U"型刚性衬砌渠,在渠道阴坡段处设半缝,阳坡段处设通缝,渠底不设缝的工程措施其抗冻胀性能效果最好,为渠道防冻胀设计提供参考和依据。更多还原

【Abstract】 In order to study the effects of different longitudinal slits on the amount of frost heave at different parts of the channel, the finite element analysis software ANSYS was used to set up the "U" rigid lining channels at the Yin, Yang, and Bottom sections of the North Qianxia Canal in Shaanxi. Numerical simulation of the temperature field and displacement field of the channel is made through the slits, half seams or without seams. After the simulation calculation, the longitudinal joints with different depths have little effect on the amount of frost heave at the bottom of the channel, and they have a certain impact on the yin and yang slope sections. After comprehensive analysis and comparison, for the "U" type rigid lining canal, a half seam is set at the negative slope section of the channel, and a through seam is set at the sunny slope section. The engineering measures without the seam at the bottom of the channel have the best anti-frost performance. Channel frost heave design provides reference and basis.更多还原