真空预压联合戗灰拌合法加固新吹填超软土地基技术

发布时间：2018-06-11 20:56

本文选题：流泥 + 真空预压　；参考：《岩土工程学报》2017年S2期

【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。
[Abstract]:When using the vacuum preloading method to reinforce the newly filled ultra-soft soil foundation, although the settlement of the foundation is very large and the moisture content has been greatly reduced, sometimes the shear strength of the cross plate of the surface soil is still relatively low, which can not meet the engineering needs. This is mainly due to the large content of clay and even colloidal particles in the soil particles and the smaller internal friction angle of the consolidation quick shear of the soil. For the surface soil which can not meet the need of engineering after vacuum preloading, the cement mixing method can be used to deal with it further.
【作者单位】：中交天津港湾工程研究院有限公司;港口岩土工程技术交通行业重点实验室;天津市港口岩土工程技术重点实验室;
【分类号】：U655.54

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