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考虑位移影响的被动土压力计算方法

, PP. 6-10

Keywords: 道路工程,挡土墙,邓肯-张模型,被动土压力,非线性影响

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Abstract:

?基于被动区土体的位移模式假设,采用邓肯-张(Duncan-Chang)提出的双曲线应力-应变关系模型,建立了考虑位移非线性影响的被动土压力计算公式,并将已有模型试验的反演分析得到的计算结果与实测结果进行比较。研究结果表明:提出的公式计算结果与实测结果比较接近,该公式能够反映位移对被动土压力的非线性影响,并且形式简单、易于理解、参数较少、物理意义明确。

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