检索结果-南通市图书馆

Experimental Study on the Effect of Fine-Grained Soil Content on the freezing strength of Aeolian Sand-Cement Interface

引用

Journal of World Architecture 2024年第2期8卷 43-48页

作者： Junhui Hu Honghuan Cui Zhishu Xie Hebei Institute of Civil Engineering and Architecture Zhangjiakou 075000Hebei ProvinceChina Hebei Key Laboratory of Civil Engineering Diagnosis Transformation and Disaster ResistanceZhangjiakou 075000Hebei ProvinceChina

In cold regions,understanding the freezing strength of the interface between soil and structure is crucial for designing frost-resistant *** investigate how the content of cement powder in aeolian sand affects this strength,we conducted direct shear tests under various conditions such as different fine-grained soil content,normal stress,and initial moisture content of the *** analyzing parameters like soil properties,and volume of ice content,and using the Mohr-Coulomb strength theory to define interface strength,we aimed to indirectly measure the cementation strength of the *** findings revealed that as the particle content increased,the interface stress-strain curves became noticeably *** also observed a positive linear relationship between freezing strength and silt content,while the initial moisture content of the soil did not significantly impact the strengthening effect of fine-grained soil on freezing ***,we discovered that as the powder content increased,the force binding the ice to the interface decreased,while the friction angle at the interface ***,the cohesion force at the interface remained relatively ***,our analysis suggests that the increase in freezing strength due to fine-grained soil content is primarily due to the heightened friction between aeolian sand and the interface.

关键词： Fine-grained soil content Contact area freezing strength Influencing factors

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Thermal and mechanical characteristics of a thermal pile in permafrost regions

引用

Advances in Climate Change Research 2023年第2期14卷 255-266页

作者： Yun-Hu SHANG Fu-Jun NIU Kun YUAN Tian SUN Li-Bo WU State Key Laboratory of Frozen Soil Engineering Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China Da Xing'anling Observation and Research Station of Frozen-Ground Engineering and Environment Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesJiagedaqi 165000China First Highway Consultants Co. Ltd.China Communications Construction Company LimitedXi'an 710075China Jiangsu Sunpower Technology Co. Ltd.Nanjing 210009China School of Civil Engineering and Hydraulic Engineering Ningxia UniversityYinchuan 750021China

Cast-in-place pile foundations are widely used in permafrost regions to support *** stability of cast-in-place pile foundations is highly sensitive to permafrost thermal regime *** degradation caused by climate change is increasing the disaster risk of castin-place pile ***,proactive cooling methods for cast-in-place pile foundations are seldom *** cold energy produced by two-phase closed thermosyphons(TPCTs)can efficiently prevent the permafrost thermal regime from being disturbed by engineering activities and climate *** were installed in a concrete pile forming a thermal ***,a model experiment was conducted to explore the thermal regime,influence scope,dissipation process of cold energy,and freezing strength of the thermal *** results indicated that the thermal pile may significantly cool the foundation *** of cold energy produced by the thermal pile dissipated during the warm period,and the cooling scope of the thermal pile can cover the area within a 40 cm(twice the pile diameter)radius around the ***,the TPCTs can significantly improve freezing strength between the thermal pile and frozen *** lesson learned from this study can provide a new approach to control the thermal regime of cast-in-place pile foundation in permafrost,which was of valuable to the construction of pile foundations in cold regions.

关键词： Pile foundation Cold energy Two-phase closed thermosyphon freezing strength Permafrost regions

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：