真空预压联合戗灰拌合法加固新吹填超软土地基技术

真空预压联合戗灰拌合法加固新吹填超软土地基技术 English Version

1. 中交天津港湾工程研究院有限公司,天津 300222;
2. 港口岩土工程技术交通行业重点实验室,天津 300222;
3. 天津市港口岩土工程技术重点实验室,天津 300222

详细信息

1. Tianjin Port Engineering Institute Ltd. of CCCC First Harbor Engineering Company Ltd., Tianjin 300222, China;
2. Key Laboratory of Port Geotechnical Engineering, Ministry of Communications, PRC. Tianjin 300222, China;
3. Key Laboratory of Port Geotechnical Engineering of Tianjin, Tianjin 300222, China

摘要: 采用真空预压法加固新近吹填的超软土地基时,尽管地基沉降量很大,含水率也有大幅度的降低,但有时加固后表层土的十字板剪切强度仍然较低,不能满足工程需要。这主要是由于这类土颗粒中黏粒甚至胶粒的含量较大且土的固结快剪内摩擦角较小所造成的。对于真空预压后不能满足工程需要的表层土,可进一步采用戗灰拌合的方法进行处理。
- 流泥 /
- 真空预压 /
- 十字板剪切强度 /
- 戗灰拌合
Abstract: When the vacuum preloading method is used to reinforce the flowing mud, the settlement of the foundation is relatively large and the water content is also greatly reduced, but sometimes the vane shear strength is still low, which cannot meet the needs of the project. This is mainly due to the large amount of clay particles and even colloidal particles in this kind of soil particles. The lime mixing method can be used for further treatment when the surface soil cannot meet the engineering needs after treatment of vacuum preloading.
- flowing mud /
- vacuum preloading /
- vane shear strength /
- lime mixing

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