摘要
在建铁路昆明枢纽K37段基底为泥炭质土,采用多向搅拌水泥砂浆桩加固,效果良好;K32段基底为泥炭土,采用多向搅拌水泥砂浆桩试桩不成桩,变更为CFG桩。文中对该案例进行研究分析认为,泥炭土、泥炭质土为主的软土地基必须开展试桩试验,尤其在含水量高、腐殖质含量较高地段根据试验情况可加强设计,采用CFG桩等处理措施是较为稳妥的加固措施。
The section K37 of under construction Kunming railway hub, based on peaty soil, was reinforced by multi-di- rection mixed cement mortar pile, and it got a good effect. While the section K32 had to be piled by CFG as multi-direc- tion mixed cement mortar piles failed to be applied on its peat soil. Through researches and analysis on this case, the paper concludes that pile tests are needed on soft soil foundation mainly composed of peat soil and peaty soil, especially in the section containing high water and high humus, enriched design may be adopted and CFG piles may be used as a safer reinforcement.
出处
《高速铁路技术》
2013年第2期5-8,共4页
High Speed Railway Technology
关键词
昆明枢纽
泥炭土及泥炭质土
地基处理
多向搅拌水泥砂浆桩
Kunming railway hub
peat soil and peaty soil
foundation treatment
multi-direction mixed cementmortar pile
