摘要
通过现场试验验证了滤管踩入式真空排水加固超软土新技术,并通过和同等条件下常规超软土浅层真空预压加固工艺、加固效果以及工程造价进行对比,认为滤管踩入式真空排水加固超软土新技术施工工艺简单、造价低廉,加固效果和常规真空预压加固效果相当,是一种具有大面积推广意义的新技术。在新近吹填土地基中采用较小的排水板间距(0.4~0.6 m),可有效提高吹填土地基加固强度,缩短加固时间。成功解决了超软土地基加固后沉降量显著而强度增加数值较小的问题。
A new vacuum preloading technology for ultra soft soils with footed-in filter tubes is verified through field tests. Compared with the construction technology reinforcement effect and engineering cost of the conventional vacuum preloading technology for surface-layer of ultra soft soils, the new technology is characterized by simple construction technology, low cost and good reinforcement effect. The technology is worthy of being widely spread. Smaller distance of drainage plates(0.4~0.6 m) in newly reclaimed ground can effectively improve the reinforcement effect and reduce consolidation time. The technology has successfully solved the problem that ultra soft foundation has large settlement but low strength increase after reinforcement.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2013年第S2期712-716,共5页
Chinese Journal of Geotechnical Engineering
关键词
真空排水加固
超软土
现场试验
排水板
间距
vacuum preloading technology
ultra soft soil
field test
drainage plate
distance
