摘要
高含水软弱地层多采用人工冻结法施工,冻结壁厚的设计是关键。通过理论推导及模型简化,提出含砂淤泥质土层冻结壁厚的设计方法。以苏州地铁联络通道为依托,在室内还原现场条件,得到某一温度下人工冻土的物理力学试验参数,并对其进行综合分析,以强度控制法与力法为计算基础,考虑所涉及的相关安全系数,确定含砂淤泥质土层冻结壁厚为2 m。
Soft stratum with high water content is mostly constructed by the artificial freezing method,so the design of thickness of freezing wall is the key point.By theoretical derivation,model simplification,the method calculation thickness of freezing wall in sandy silty soil layer is put forward.Based on the metro communication channel in Suzhou,the field conditions were restored in laboratory to obtain the parameters for physical and mechanical tests on artificial freezing soil at a certain temperature,then comprehensive analysis were carried out to take strength control method and force method as the calculation basis and to take the relevant safety factors involved into consideration.As a result,it was determined that the thickness of freezing wall in sandy silty soil layer to be 2 m.
作者
王雨
解健康
龙坤
赵雷
陈科旭
孙鹤轩
WANG Yu;XIE Jiankang;LONG Kun;ZHAO Lei;CHEN Kexu;SUN Hexuan(China Railway 19 Bureau Group Co.,Ltd.,Beijing 101300,China;School of Architecture&Civil Engineering,Xi'an University of Science and Technology,Xi'an 710054,China)
出处
《路基工程》
2024年第1期111-117,共7页
Subgrade Engineering
关键词
高含水软弱地层
人工冻结法
冻结壁厚度
强度控制法
位移监测
weak strata with high water content
artificial freezing method
thickness of freezing wall
strength control method
displacement monitoring
