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压实机位置对垃圾填埋场边坡部土工膜受力的影响

Influence of location of roller compactor on tensile force of geomembrane placed on slope
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摘要 为了评价垃圾填埋过程中土工膜端部产生的张拉力,特别是压实机位置对边坡部土工膜受力的影响,进行了模拟试验和数值分析。采用离心加载模拟试验,得到了压实机位置与短纤维无纺布和土工膜端部张拉力的关系。试验结果表明:伴随垃圾压缩短纤维无纺布和土工膜端部产生张拉力;当边坡部上方有压实机行走时端部张拉力会增加,压实机越接近边坡部土工膜端部张拉力越大,而且端部张拉力的增量超过垃圾重量引起的张拉力。采用有限元算法对短纤维无纺布和土工膜端部张拉力进行了分析,计算结果与试验结果基本一致。压实机位置对边坡部土工膜端部张拉力的影响比较大。 To evaluate the variation of tensile force creating at the shoulder of HDPE(high density polyethytene) geomembrane in the course of filling,especially the influence of the location of roller compactor on tensile force of HDPE geomembrane placed on the slope,centrifugal model experiments and FEM(finite elemetn method) analysis were conducted.The relationship between the location of roller compactor and tensile forces was obtained by centrifugal model experiment in the course of filling.The result shows that the tensile forces are caused within HDPE geomembrane by compaction work of the waste,and that the tensile forces increase when the roller compactor runs to the slope.It also shows that the closer the slope,the bigger the tensile force,and that the increment of tensile force is larger than that of tensile force created by waste.The tensile forces were analyzed by FEM,and the calculation values were similar to the experimental values.The influence of the location of the roller compactor on the tensile force of HDPE geomembrane placed on slope is great.
出处 《解放军理工大学学报(自然科学版)》 EI 2008年第1期47-51,共5页 Journal of PLA University of Science and Technology(Natural Science Edition)
基金 浙江省自然科学基金资助项目(Y506230)
关键词 高密度聚乙烯土工膜 张拉力 离心试验 压实机位置 数值分析 HDPE geomembrane tensile force centrifugal model experiment location of roller compactor FEM analysis
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