针对海南省滨海公路软土路基工程地质特征，采用统计调查的方法，分析了软土路基与路面病害相关性，并通过建立 Boltzmann 沉降模型，采用微分方法，结合沉降曲线几何意义，分析了软土路基沉降发育规律。结果表明：软土路基与路面病害具有直接相关性，但排水条件好的软土路段，由于其固结及隔离作用，病害与一般路段相比并不严重；采用微分方法对 Boltzmann 模型进行三阶导数分析，得到软土路基沉降发育各阶段的区间计算公式；采用相对误差分析 Boltzmann 模型预测沉降值与实测沉降值之间的差异，验证了模型的适用性。%According to the geologic characteristics of soft clay embankment of coastal road in Hainan province and based on the method of statistical investigation,the correlation of soft clay embank﹣ment with pavement damage was analyzed.Also the settlement development regularity of soft clay em﹣bankment was analyzed through establishing the Boltzmann model,using the differential method and com﹣bining with the settlement curve geometric meaning.The results showed that the soft clay embankment correlated with pavement damage directly,but showed no serious difference for soft clay embankment with good drainage condition;The calculation formula of settlement development for soft clay embankment could be got through analysis of Boltzmann model based on differential method;Based on relative error method analyzed the different between predict settlement and measured settlement,and verified the appli﹣cability of the Boltzmann model.
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