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对广东珠海某大桥地基软土进行一系列一维次固结试验,通过分析土体在不同含水率及加卸载条件下次固结系数的变化规律,研究了珠海地基软土的次固结特性。结果表明:软土在次固结过程中,随着固结围压的增大,次固结系数逐渐增大;软土次固结过程受土体含水率的影响;卸载再加载后土体次固结系数呈减小趋势。试验及分析结果对工程实际具有一定的指导意义。
A series of one-dimensional consolidation tests were conducted on the soft soil of a bridge foundation in Zhuhai, Guangdong. Based on the analysis of the variation regularity of the consolidation coefficient of soil under different moisture content and loading-unloading conditions, the secondary consolidation characteristics of soft soil in Zhuhai area . The results show that in the process of secondary consolidation, the secondary consolidation coefficient increases with the increase of consolidation confining pressure. The secondary consolidation process of soft soil is affected by soil moisture content. After unloading and reloading, the soil Secondary consolidation coefficient showed a decreasing trend. Test and analysis of the results of the actual project has a certain significance.