【摘要】 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。更多还原

【Abstract】 The dead load of backfill layer is the main factor to the foundation settlement,after a large area of deep backfilling processing in soft foundation. Therefore,to select the compression modulus of soft substratum,the impact provided by the backfill loading in upper part should be considered. Determining the compression modulus of soft substratum reasonably is the key for settlement calculation. Based on analysing and studying on the backfill process in the field,this paper deems that decomposing the backfill loading and considering the compression modulus in substratum under different loading conditions is a reasonable design idea.更多还原