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大面积软弱地基采取深厚回填处理后,回填层的自重是造成地基沉降的主要因素,软弱下卧层压缩模量的选取需考虑上部回填荷载的影响,合理选取软弱下卧层压缩模量是沉降计算的关键。根据对现场实际回填过程的分析和研究,认为对回填荷载进行分解,分别考虑不同荷载条件下下卧层的压缩模量是一种较合理的计算思路。
After deep backfilling of large area and weak foundation, the self-weight of backfill layer is the main factor to cause subsidence. The selection of compressive modulus of soft underburden layer needs to consider the influence of upper backfill load. Calculation of the key. According to the analysis and research on the actual backfill process in the field, it is considered that it is reasonable to consider the compressive modulus of the subsoil under different loading conditions by decomposing the backfill load.