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海堤工后沉降分析预测对工程维护和灾害防治具有重要意义。以海堤工后初期监测资料为基础,运用分层总和法和太沙基一维固结理论反演了土层固结系数,并通过对固结系数变化规律的分析,提出采用改进变维分形预测模型对具有较强趋势性的固结系数进行预测,进而对海堤工后可能发生的长期沉降进行预测。以浙江省洞头县北岙后二期东围堤工程的海堤监测数据作为研究对象进行了验证计算,结果表明,该方法反映了实际土体的固结沉降机制,能够较好地预测海堤工后沉降趋势,具有一定的工程实用意义。
Analysis and forecast of post-construction settlement of seawall is of great significance to project maintenance and disaster prevention. Based on the initial monitoring data after the seawall construction, the stratified consolidation method and the one-dimensional consolidation theory of the terzajasme foundation were used to invert the consolidation coefficient of the soil layer. Based on the analysis of the variation law of the consolidation coefficient, the improved variable-dimensional The fractal prediction model predicts the consolidation coefficient with strong trend and then predicts the long-term settlement that may occur after the seawall work. The test data of the seawall of the second embankment project in Beitou of Dongtou County, Zhejiang Province were taken as the research object. The results show that this method reflects the consolidation settlement mechanism of the actual soil and can predict the sea Dike after the settlement trend, with some practical engineering significance.