深厚软土工后沉降预测及其参数的反分析  

Parameter conversion and settlement estimation based on nonlinear variation of parameters in soft clay

作　　者：叶虔[1] 丘建金 

机构地区：[1]中国地质大学(武汉),武汉430074 [2]深圳市勘察测绘院有限公司,广东深圳518028

出　　处：《工程勘察》2009年第11期28-32,共5页Geotechnical Investigation & Surveying

摘　　要：本文提出了考虑土体参数非线性变化对固结过程影响的改进一维固结模型,利用实测的软土地基沉降资料反演软土层的主要特性参数,进而利用改进的固结理论所建立的计算模型进行地基的沉降过程和总沉降的计算。根据广东某工程的实测沉降资料,利用所建立的计算模型反演计算有关参数和地基沉降过程,经与实测结果进行比较,发现二者吻合较好,说明改进的理论模型是合理的,具有实用价值,可供同类工程借鉴和参考。The improved one-dimentional consolidation model is presented in the paper, which considers the influence from non-linear variation of parameters during the process of consolidation in soft clay. Based on the insitu data of subgrade settlement in soft clay, main parameters of geomaterials can be determined. The consolidation and total settlement can be calculated using the improved one-dimentional consolidation model in this way. From the measured in a field in Guangdong province, the foundation settlement has been calculated and compared with actual settlement result. It is observed that they agree well with each other and the improved model is proved to be reasonable in the pratieal application.

关 键 词：一维固结 沉降预测 非线性变化 反演计算 

分 类 号：TU473[建筑科学—结构工程]