By considering displacement for calculating circular earth pressure, the maximal earth counterforce formulas for the heading and the latter pipelines are deduced.
采用考虑位移的土压力计算方法计算环向土压力，得出首节管道和后续管节最大土体反力的计算公式。
A linear Mohr-Coulomb failure criterion is used for the traditional method of calculating earth pressure.
对于土压力传统的计算方法采用的多是线性摩尔-库仑破坏准则。
By analyses, a simplified calculation method of active earth pressure on back of abutment UN der earthquake condition has been put forward. Calculating results prove the reasonable of this method.
通过分析，本文提出了地震条件下桥台台背主动土压力简化计算方法，计算结果表明了这一公式的合理性。
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