- 摘 要
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(1 安徽理工大學土木建筑學院, 淮南 232001； 2 上海強勁地基工程股份有限公司， 上海 200233)
［摘要］研究了在軟土地基加固中注漿的壓力，根據(jù)一般形式的破壞準則，結合超孔隙水壓力公式、擴孔和大變形理論推導了軟土劈裂注漿壓力的理論公式，分析了在不同破壞準則下軟土劈裂注漿壓力的變化情況。通過對現(xiàn)場試驗測得的注漿壓力值與注漿壓力理論值對比，得出基于Lade-Duncan強度準則和M-C強度準則的注漿壓力理論值與現(xiàn)場試驗值較為接近，但仍存在一定誤差。于是基于Lade-Duncan、SMP和M-C強度準則對試驗土層的破壞準則進行了修正，建立了適用于該土層的破壞準則，并提出了一種簡單有效的修正方法, 為理論研究和工程實踐提供了一定的指導意義。
［關鍵詞］強度準則修正； 劈裂注漿； 注漿壓力； 軟土加固
中圖分類號： TU472.6 文獻標識碼： A文章編號： 1002-848X(2016)S2-0535-05
Correction of strength criterion for fracture grouting of soft soil
Chen Yue1,2， Hua Xiaoman1， Du Xiaoli1
(1 School of Civil Engineering and Architecture, Anhui University of Science and Technology， Huainan 232001， China;
2 Shanghai Strong Foundation Engineering Co., Ltd., Shanghai 200233, China)
Abstract： The grouting pressure of soft soil foundation reinforcement was studied. According to the general form of soil failure criterion, excess pore water pressure formula, reaming theory and large deformation theory, the theoretical formula for soft soil fracture grouting pressure was established, and the changes of soft soil fracture grouting pressure with different failure criterias were analyzed. The field test value of grouting pressure was compared with the theoretical value derived from the Lade-Duncan strength criterion and the M-C strength criterion, and it is concluded that the experimental value and the theoretical value are close, but there are still some errors. Based on Lade-Duncan strength criterion, SMP strength criterion and M-C strength criterion, the failure criterion of the soil was revised and established, which provided a simple and effective method. This has a certain guiding significance for theoretical research and engineering practice.
Keywords: strength criterion revision; fracture grouting; grouting pressure; soft soil reinforcement
作者簡介： 陳越，碩士研究生，Email：yuechen93716@163.com。
*中國博士后科學基金資助項目(2013M541811)，安徽省教育廳自然科學重大項目（KJ2015ZD20）。
