EXPERIMENTAL STUDY ON REINFORCEMENT EFFECT OF GEOGRID ON COMPOSITE FOUNDATION WITH DRY JET MIXING PILES
EXPERIMENTAL STUDY ON REINFORCEMENT EFFECT OF GEOGRID ON COMPOSITE FOUNDATION WITH DRY JET MIXING PILES
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
Zhou Lixin
中科院分区：
文献类型：
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作者：
Zhou Lixin
在遂渝200 km/h客货共线软土地基试验段，对土工格栅加固粉喷桩复合地基的沉降进行了研究，通过对粉喷桩与地基土应力以及土工格栅拉力的测试，研究了土工格栅对粉喷桩复合地基的加固效果。试验结果表明，桩体和土体的应力均随路堤高度线性增加，土工格栅的拉力随沉降呈沿着变化，土工格栅加固粉喷桩复合地基的沉降量较无土工格栅的粉喷桩复合地基减少30%~ 65%，桩土应力比为3.75。
In a test sector of soft ground on the 200 km/h mixed passenger and freight railway from Suiling— Chongqing,the settlement of the composite ground with the dry jet mixing(DJM) piles reinforced by the geogrid,and the stress on the DJM piles and the ground soil as well as the tensile force of the geogrid were measured to study the reinforcement effect of the geogrid on the composite ground with the DJM piles.As shown by the test,the stresses on the piles and the soil were increased with the height of the embankment linearly.The tensile forces of the geogrid were changed along with the settlement exponentially.Compared to the composite ground with the DJM piles without geogrid,the settlement of the composite ground with the DJM piles reinforced by the geogrid were reduced by 30%–65%,and the stress ratio between the piles and the soil was 3.75.