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高填方工程填方高度高、填方量大,较易产生不均匀沉降,对工程的安全性和稳定性产生不利的影响,因此对高填方地基的工后沉降的研究具有重要意义。针对高填方地基的工后沉降计算,本文在考虑时间效应的UH模型的有限元计算方法和与分层总和法相配合的一维简化蠕变沉降计算方法的基础上,提出高填方地基蠕变沉降实用算法。本文还给出了高填方地基蠕变沉降实用算法参数确定方法。之后,用承德机场的监测数据验证了该计算方法。结果表明,该方法能够在有限监测数据下较好地预报工程中所关心施工期内的工后沉降,为工程的后期施工提供指导。
High-fill engineering fill high height, large amount of fill, prone to uneven settlement, the safety and stability of the project have a negative impact, so the study of high fill foundation post-construction settlement is of great significance. Aiming at the post-construction settlement calculation of high embankment, based on the finite element method of UH model considering the time effect and the simplified one-dimensional simplified creep settlement method in combination with the stratified summation method, Variable settling practical algorithm. This paper also gives a method to determine the practical parameters of creep settlement of high embankment. Afterwards, the calculation method was verified with the monitoring data of Chengde Airport. The results show that this method can predict the post-construction settlement within the construction period of interest well under the limited monitoring data and provide guidance for the later construction of the project.