兴城海滨灌区衬砌渠道抗冻胀试验与数值模拟

The experience for frost heaving resistance and numerical simulation of lining canal in Xingcheng haibin irrigation area

寒区混凝土衬砌渠道因渠基土冻胀易出现渠底和渠坡混凝土面板裂缝和上台等破坏情况,从而引起渠道渗漏,水资源浪费现象。通过对辽宁兴城海滨灌区苯板衬砌渠道开展冻胀量和地温等现场观测试验,并结合有限元数值模拟对比分析,得出模拟结果与实际观测结果基本吻合的结论,为渠道工程抗冻胀设计提供了重要参考依据。

Due to frost heaving effect of soil under the base of concrete lining channels,the concrete cracking is often appeared,and even uplift damage is occurred in cold region.The leakage and irrigation water waste in irrigation channels are serious caused by these damages.Based on the situ observation test for various forms of lining channel structure in Liaoning Xingcheng region,the finite element numerical simulation technology is applied.So the benzene board and the non-benzene board for lining structure,the test observation data and the numerical simulation results are contrastively analyzed.By which the rationality and feasibility of numerical model are verified,and a reference for the channel system engineering design and research are provided.