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首页> 外文会议>International symposium on deformation characteristics of geomaterials >Effect of geogrid-geomembrane geocomposites and geogrids on the failure mechanism of foundation over liquefied sand
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Effect of geogrid-geomembrane geocomposites and geogrids on the failure mechanism of foundation over liquefied sand

机译：地质磨石地理复合材料复合材料和地理格栅对液化砂基础故障机理的影响

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This paper presents the results of a series of lg shaking table tests modeling a 4 story building foundation in different mitigation circumstances from the failure mechanism standpoint. Scale factor of the model is 1:25 and Firouzkooh sand was used as soil material which is bad-graded synthetic angular sand. Wet tamping method was adopted in model preparation and textile-like materials were used as geosynthetics. Failure mechanisms, foundation settlement and pore pressure build-up trends were the indicators of geosynthetics' performance. The failure mechanism is observed through a digital camera and analyzed based on a mesh of colored sand. Results show that the effectiveness of textile-like elements is related to their amount and location. Failure mechanism is different in various conditions. Reinforcing sand with geogrid- geomembranc geocomposites can reduce the settlement and change the pattern of soil movement due to liquefaction. Heavily reinforcing soil with geocomposites reduces settlement in deeper depths considerably but it can't increase bearing capacity of surface soil, therefore it can't decrease settlement of foundation because of its sinking into the soil.
机译：本文介绍了一系列LG振动桌测试的结果，从失败机制的角度来看，在不同的缓解情况下建模4个故事建筑基础。模型的规模因子是1:25，并且Furouzkooh砂被用作土壤材料，这是坏分级合成角砂。采用模型制备和纺织品的湿式夯实方法用作土工合成液。失败机制，基础沉降和孔隙压力积累趋势是土工合成绩效的指标。通过数码相机观察故障机制，并基于彩色砂的网分析。结果表明，纺织状元素的有效性与其量和位置有关。在各种条件下，失败机制不同。带土工格兰德地质地质复合材料的加固砂可以减少沉降并改变由于液化引起的土壤运动模式。具有地理复合材料的重量增强土壤在更深的深度方面减少了沉降，但它不能增加表面土壤的承载力，因此由于其沉入土壤而不能降低基础的结算。

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