珠海软土工程特性空间异性规律研究

宋许根; 王志勇; 柏威伟; 王哲; 谢书萌; 夏开宗

doi:10.11779/CJGE2019S1007

珠海软土工程特性空间异性规律研究 English Version

1. 中铁第四勘察设计院集团有限公司道路交通设计研究院,湖北武汉 430063;
2.中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,湖北武汉430071

基金项目: 中铁第四勘察设计院重点科研攻关项目（2015K84）

详细信息

作者简介:
宋许根(1992—),男,江西吉安人,硕士,助理工程师,主要从事边坡稳定性、软土工程特性和软基处理方面的研究与勘察设计工作。E-mail：songxugen@qq.com。

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出版历程
- 收稿日期: 2019-04-27
- 发布日期: 2019-07-14

Spatial heterogeneity of engineering properties of Zhuhai soft soils

1. Institute of Road Planning and Design, China Railway Siyuan Survey and Design Group Co., Ltd., Wuhan 430063, China;
2. Stake Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China

摘要

摘要: 软土的物理力学参数是软基处理设计的基本依据。以珠海市西部中心城区首期开发项目（A片区）大量资料分析为基础,通过实验测试数据统计来探讨珠海市西部中心城区软土的分布和参数的空间异性规律。研究结果如下：通过对勘探数据处理,得到珠海西部中心城区A片区软土厚度分布等值线图;先期固结压力,无侧限抗压强度随深度的增加而增加,灵敏度和有机质含量不受深度变化影响;含水率、液限、塑限和塑性指数随深度的变化规律为先增大后减小;直剪强度指标随深度变化规律与含水率、液限、塑限等指标相反,呈先减小后增大的规律;原位试验结果与室内实验所得的结果有一致性又有区别,在使用室内试验强度指标设计时应充分参考原位试验结果。
- 珠海软土 /
- 软土参数 /
- 统计规律 /
- 软土分布 /
- 空间异性
Abstract: The physical and mechanical parameters of soft soils are the fundamental basis for the design of soft roadbeds. Based on the analysis of amounts of test data in the central area of western Zhuhai, the distribution of soft soils and the laws of spatial anisotropy of parameters are discussed. The distribution contour map of the soft soils is obtained. The pre-consolidation pressure and the unconfined compressive strength increase with depth. The sensitivity and organic matter content are not affected by the change of depth. The water content, liquid limit, plastic limit and plasticity index changing with depth increase first and then decrease. The laws of direct shear strength indexes changing with depth are opposite to those with the water content, liquid limit and plastic limit, and they decrease first and then increase. The results of the in-situ tests are consistent with those obtained by the laboratory experiments, and there are also differences. When using the intensity indexes of laboratory experiments in design, the in-situ test results should be referred to.
- Zhuhai soft soil /
- soft soil parameter /
- statistical analysis /
- soft soil distribution /
- spatial anisotropy

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参考文献(9)

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