Research on the Engineering Characteristics of Soft Soil Composite Foundation Road Under Traffic Load
In response to the post construction settlement problem of soft soil foundation in highway engineering under long-term traffic loads,the soft soil foundation treatment section of the Wuyi New Area Expressway Project is taken as the research object.The dynamic elastic-plastic finite element program is used to simulate the deformation process of the composite foundation under traffic loads,and the cumulative plastic strain of the soft soil and the cumulative settlement change characteristics of the composite foundation are analyzed.The research results indicate that as the number of traffic load cycles increases,the cumulative plastic strain of soft soil under different compression modulus conditions shows a nonlinear increase and tends to converge continuously.Under the same number of traffic load cycles,as the compressive modulus of soft soil continues to increase,the cumulative plastic strain of soft soil continuously decreases.As the number of traffic load cycles increases,the cumulative settlement curve of composite foundation shows an inverse"S"shaped variation pattern.When the number of loading cycles exceeds 1 000,the cumulative settlement of composite foundation tends to converge.The research results can provide theoretical support and practical guidance for reducing the post-construction settlement of soft soil foundation.
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万方数据
维普
