摘要
结合昆明市轨道交通2号线某地铁车站基坑坑底加固工程,开展深层搅拌桩加固泥炭质土的试验及作用机理研究。将无侧限抗压强度作为评价泥炭质土加固效果的指标,考虑泥炭质土埋置深度、水泥强度等级、深层搅拌桩施工工艺等因素的影响,探讨了昆明泥炭质土层的加固效果。研究结论可为泥炭质土地区的地基加固处理提供借鉴和参考。
Based on the bottom reinforcement project of foundation pit in a metro station of Kunming Rail Transit Line 2,the test and mechanism of peat soil reinforcement by deep mixing pile are carried out.The unconfined compressive strength is taken as the index to evaluate the consolidation effect of peat soil.Considering the influence of the buried depth of peat soil,the strength grade of cement,the construction technology of deep mixing pile and other factors,the reinforcement effect of Kunming peat soil stratum is discussed.The research conclusion can provide reference for the foundation reinforcement treatment in peat soil area.
作者
张帆
李向红
孙伟
王志良
丁祖德
李永迪
ZHANG Fan;LI Xianghong;SUN Wei;WANG Zhiliang;DING Zude;LI Yongdi(Shanghai Tunnel Engineering Co,Ltd.,Shanghai 201108,China;Kunming University of Science and Technology,Kunming,Yunnan 650031,China)
出处
《建筑施工》
2020年第6期1069-1071,共3页
Building Construction
关键词
泥炭质土
深层搅拌桩
加固处理
无侧限抗压强度
peat soil
deep mixing pile
reinforcement treatment
unconfined compressive strength
