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CALCULATION METHOD OF SUBGRADE ELASTIC MODULUS FOR ASPHALT PAVEMENT USING RESILIENT MODULUS

室内実験結果を用いたアスファルト舗装の路床の弾性係数算出法の検討
Authors: Yasushi TAKEUCHI; Yukihiro KOHATA; Etsuo SEKINE;

CALCULATION METHOD OF SUBGRADE ELASTIC MODULUS FOR ASPHALT PAVEMENT USING RESILIENT MODULUS

Abstract

Elastic modulus of subgrade is an important input parameter in the multilayered elastic structural analysis of asphalt pavement, and the resilient modulus measurement of subgrade materials which assumed action of the vehicle load has been examined energetically after 1990's by laboratory testing. However, no design example using the resilient modulus is shown in the Japanese pavement design book because of the resilient modulus is a non-linear elastic modulus depending on a stress state, and structural analysis becomes complicated. In this study, by using the rearranged past data, arranging method of the resilient modulus was examined and furthermore a simple calculation method of the subgrade resilient modulus for the multilayered elasticity structural analysis was proposed. アスファルト舗装の多層弾性構造解析において,路床の弾性係数は重要な入力パラメータであり,1990年代以降には,室内実験によって輪荷重の作用を想定した路床材料のレジリエントモジュラスの測定が精力的に行われてきた.しかし,レジリエントモジュラスは応力状態に依存する非線形弾性係数であり,構造解析が複雑になるため,日本の舗装設計関連図書では設計事例が示されていないのが現状である.本研究では,既往のデータを再整理してレジリエントモジュラスの整理方法について検討するとともに,多層弾性構造解析において簡易にレジリエントモジュラスを用いる方法を提案した.

Keywords

asphalt pavement, resilient modulus, generalized model, subgrade

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
7
Top 10%
Top 10%
Average
bronze