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THEORETIC MODIFICATION ON THE SUBGRADE RESILIENT MODULUS TESTED BY LAB BEARING PLATE INDOORS

Peng Xiao-ping

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Abstract

Subgrade Resilient modulus are important parameters of highway structure design.The actual subgrade resilient modulus is related with safety and economy of highway structure.Indoor tests are necessary because of disadvantages of outdoor tests.Based on elastic layer theory,theoretical modified coefficient of resilient modulus is put forward with FEM.After the results are verified with actual projects,it is shown that subgrade resilient modulus by indoor bearing plate should be multiplied by coefficient 0.95,so as to provide references for testing subgrade resilient modulus indoor reasonably.

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What this paper is about

Subgrade Resilient modulus are important parameters of highway structure design.The actual subgrade resilient modulus is related with safety and economy of highway structure.Indoor tests are necessary because of disadvantages of outdoor tests.Based on elastic layer theory,theoretical modified coefficient of resilient modulus is put forward with FEM.After the results are verified with actual projects,it is shown that subgrade resilient modulus by indoor bearing plate should be multiplied by coefficient 0.95,so as to provide references for testing subgrade resilient modulus indoor reasonably.

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Available abstract

Subgrade Resilient modulus are important parameters of highway structure design.The actual subgrade resilient modulus is related with safety and economy of highway structure.Indoor tests are necessary because of disadvantages of outdoor tests.Based on elastic layer theory,theoretical modified coefficient of resilient modulus is put forward with FEM.After the results are verified with actual projects,it is shown that subgrade resilient modulus by indoor bearing plate should be multiplied by coefficient 0.95,so as to provide references for testing subgrade resilient modulus indoor reasonably.

Key concepts: Subgrade, Modulus, Geotechnical engineering, Bearing (navigation), Structural engineering, Materials science, Engineering, Computer science

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