海积软土前期固结压力与结构强度的关系及成因分析  

Relationship between preconsolidation pressure and structural strength of marine soft clay and the cause analysis

作　　者：王冠英[1] 肖树芳[1] 习春飞[1] 

机构地区：[1]吉林大学建设工程学院,吉林长春130026

出　　处：《世界地质》2004年第1期69-74,共6页World Geology

基　　金：国家自然科学基金项目资助(40172092)

摘　　要：通过对不同地区海积软土的大量试验,对原状土样和重塑土样的压缩曲线确定了海积软土前期固结压力和结构强度,并研究了海积软土前期固结压力及结构强度的关系。由于考虑了土的结构强度,对结构性土根据超固结比(OCR)对土的压密状态的判断与实际结果更加相符。为了定量地反映海积软土的结构强弱,首次引入反映海积软土结构性及其对扰动敏感程度的结构稳定系数,反映了海积软土结构性的稳定程度。初步分析了海积软土结构强度的成因。Based on the tests of different marine soft clays, through analying the compression curves of reconstituted and original soils, the preconsolidation pressure and the structural strength of marine soft clay are determined. The relationship between marine soft clay's preconsolidation pressure and structural strength are studied in this paper. As for the structural strength, the judgement to the state of soil compression, which based on the OCR is more consistent with the fact. In order to reflect the structural strength of marine soft clay quantitively, the structural stability coefficient is led into for the first time, which can demonstrate both the characteristics of marine soft clay and the sensitivity of different disturbance. It also reflects the steady degree of the marine soft clay's characteristics. The cause of structural strength is analyzed primarily.

关 键 词：海积软土 前期固结压力 结构强度 结构稳定系数 

分 类 号：TU447[建筑科学—岩土工程]