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中文摘要：
掌握桩承式路堤中土拱效应的传力机制,建立有效的计算模型,可合理选择桩间距,这对保证工程质量和节约工程造价具有重要的作用。采用非均布荷载形式,建立了相应的土拱效应计算模型,并给出了土拱拱顶与拱脚截面等效直径变化规律的经验关系。通过理论计算桩顶应力,并与实际工程监测数据对比,结果显示二者基本吻合,验证了改进模型的可行性。
英文摘要：
Explores the mechanism of subgrade soil arching and establishes available equation of soil arching.This helps selecting reasonable distance between piles to ensure the quality and save the cost of construction.Uses varying distribution load,establishes computer model of soil arching,and provides empirical relation equation of diameter between top section and arch foot section.Calculates the stress of pile top with the established equation and contrasts it with measured data,the results show that the two are basically consistent and verifies feasibility of the improved model.
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