| 砂垫层在真空预压软土地基处理中的作用 |
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| 引用本文： | 顾勇,蔡建,朱治.砂垫层在真空预压软土地基处理中的作用[J].水运工程,2011(5):127-131. |
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| 作者姓名： | 顾勇 蔡建 朱治 |
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| 作者单位： | 1. 中交上海航道勘察设计研究院有限公司,上海,200120
2. 中交上海航道勘察设计研究院有限公司,上海,200120;上海航源港口工程质量检测有限公司,上海,200120 |
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| 摘 要： | 分析吹填疏浚淤泥在真空预压软土地基处理中排水及荷载变化的过程,根据土的卸载抗剪强度的计算方法从理论上分析了无砂垫层真空预压、有砂垫层真空预压、无砂垫层真空预压后再设置砂垫层3种情况在地基处理后沿深度方向地基土抗剪强度的变化规律,发现砂垫层在真空预压软土地基处理中具有难以替代的重要作用。
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| 关 键 词： | 砂垫层 真空预压 土的卸载抗剪强度 |
Effect of sand cushion on soft soil ground treatment with vacuum preloading method |
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| GU Yong,CAI Jian,ZHU Zhi.Effect of sand cushion on soft soil ground treatment with vacuum preloading method[J].Port & Waterway Engineering,2011(5):127-131. |
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| Authors: | GU Yong CAI Jian ZHU Zhi |
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| Institution: | 1(1.China’s Traffic Shanghai Waterway Engineering Design and Consulting Co.,Ltd.,Shanghai 200120,China; 2.Shanghai Hangyuan Harbor Engineering Quality and Test Co.,Ltd.,Shanghai 200092,China) |
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| Abstract: | This paper analyzes the process of drainage and load variation of dredged mud during soft ground treatment by the vacuum preloading,discusses theoretically the variation law of ground’s shear strength along the depth direction after ground treatment under the three conditions: vacuum preloading with no sand cushion;vacuum preloading with sand cushion;laying sand cushion after vacuum preloading with no sand cushion.It is found that the sand cushion plays an important role in the process of soft soil ground treatment with vacuum preloading method. |
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| Keywords: | sand cushion vacuum preloading soil unloading anti-shearing strength |
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