The calculation principle of earth pressure using principal stress arching is proposed. 給出了用主應力拱應力分析計算土壓力的基本原理。
During the process of computation the traditional Ranken's earth pressure theory and that of Coulomb's were reasonably simplified. 設計計算時，對傳統的朗金土壓力和庫侖土壓力理論進行了合理的簡化。
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