| 深层搅拌法在真空预压后地基工程上的应用 |
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| 引用本文： | 王惠中.深层搅拌法在真空预压后地基工程上的应用[J].世界地质,2005,24(3):304-307. |
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| 作者姓名： | 王惠中 |
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| 作者单位： | 中港一航局第四工程公司,天津,300456 |
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| 摘 要： | 为使经真空预压首期加固后的地基承载力从80 kPa提高到230kPa,设计采用深层搅拌法-水泥搅拌桩二次加固软弱地基.经现场成桩工艺试验和检测表明,桩身水泥土强度在90 d龄期时＞1.80 MPa,单桩承载力标准值＞150kN;以φ600桩径、桩长13.5 m、置换率为0.308和φ500桩径、桩长13.5m、置换率为0.267两种方案布置的复合地基承载力标准值均超过了设计要求.
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| 关 键 词： | 深层搅拌法 水泥搅拌桩 复合地基 水泥土强度 单桩承载力 |
| 文章编号： | 1004-5589（2005）03-0304-04 |
| 收稿时间： | 2005-05-09 |
| 修稿时间： | 2005-05-092005-07-18 |
Application of cement deep mixing method to foundation improved by vacuum preloading |
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| WANG Hui-Zhong.Application of cement deep mixing method to foundation improved by vacuum preloading[J].World Geology,2005,24(3):304-307. |
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| Authors: | WANG Hui-Zhong |
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| Institution: | Fourth Engeering Co. CHEC, Tianjin Port Construction Corporation, Tianjin 300456, China |
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| Abstract: | The bearing capacity of foundation improved by vacuum preloading was 80 kPa. The cement deep mixing method was applied to improve the foundation bearing capacity increased to 230 kPa. The in-situtest indicates that the pile shaft strength in the time of 90 days is greater than that in 1.8 MPa, and the single pile bearing capacity is greater than 150 kN. Meanwhile, the composite foundation standard bearing capacity for two pile layout schemes is greater than that of the design specifications. |
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| Keywords: | ement deep mixing method cement mixing pile composite foundation soil-cement strength bearing capacity of single pile |
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