有关软土地基加固设计若干问题的讨论

通过介绍几个典型塑料排水板加固软基的设计、施工实例，对软土地基加固设计中的固结系数选取、固结系数各向异性的特点、利用实测沉降曲线推算最终沉降量方法、加固深度等问题进行讨论，通过对大量的现场检测资料反分析与实验室结果进行统计分析，提出了软土地基加固设计时固结系数选取的经验方法。对加固深度问题进行了讨论，分析了施工因素对固结效果的影响。

Discussions on Some Issues in Designs for Soft Soil Improvement Works

By expounding on some typical examples of design and implementation of soft soil improvement works with prefabricated drains, discussions are made on the selection of coefficients of consolidation in the design of soft soil improvement works, the anisotropic characteristics of the coefficients of consolidation, the method for calculating the final settlement by way of measured settlement curves and the depth of soil improvement. Empirical methods for selection of the coefficient of consolidation during the design of soft soil improvement works are proposed on the basis of the back-analysis of the field measured data and the statistical analysis of the laboratory results. The problem of depth of improvement is discusse and the influence of construction factors upon the consolidation of soil is analyzed.