真空-堆载联合预压加固软土地基沉降计算改进法

摘要

The estimated settlement for vacuum combined surcharge preloading engineering based on the na⁃tional code of China is smaller than the practical one according to the comparison between observation data and cal⁃culation results. An improved method to calculate settlement was proposed by introducing the factorβwhich to cor⁃rect the assumption of lateral confinement and the factorsδandλwhich to correct the disturbance of soil sample in this paper. By analyzing the calculations of vacuum combined surcharge preloading projects in Jiaozhou bay, the re⁃sults show that the calculated curves by using improved method are fitting well with the measured curves.%通过对比工程实测沉降资料与沉降计算结果表明，现有规范对真空—堆载联合预压地基的沉降估算值偏小。文章引入侧限假定修正系数β及取土扰动修正系数δ、λ，并由此提出了地基沉降计算改进公式。胶州湾地区真空—堆载联合预压工程算例分析结果表明，采用沉降计算改进法得出的计算值曲线与实测值曲线吻合度较好。