A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
In-situ test method for tangential frost heaving force of pile foundation in seasonal frozen soil area
The invention relates to the technical field of foundations, in particular to an in-situ test method for tangential frost heaving force of a pile foundation in a seasonal frozen soil area, which comprises the following steps: step 1, manufacturing a test pile, constructing an anchor pile, excavating a temperature measuring well and arranging a soil layer freezing depth monitoring system; 2, a pile foundation loading system is installed at the top of the test pile; 3, the datum piles and the datum beams are installed; step 4, loading to a preset load at the top of the test pile in a grading manner; and 5, the soil layer temperature, the soil layer vertical frost heaving amount and the pile body axial strain are measured and read, and the tangential frost heaving force of the pile foundation is obtained after data processing. The soil layer freezing depth monitoring system is arranged to observe the temperature and the vertical frost heaving amount of the tested soil layer in real time, the freezing state of the soil layer around the pile during testing can be determined, the actual working state of the pile foundation is simulated by applying the preset load to the pile top, and the tangential frost heaving force of the pile foundation in the actual working state of the pile foundation can be determined.
本发明涉及地基基础技术领域，尤其涉及一种季节性冻土地区桩基切向冻胀力原位测试方法，包括以下步骤：步骤1、制作试桩，施工锚桩，开挖测温井并布置土层冻结深度监测系统；步骤2、在试桩顶部安装桩基加载系统；步骤3、安装基准桩和基准梁；步骤4、在试桩顶部分级加载至预设荷载；步骤5、测读土层温度、土层竖向冻胀量和桩身轴向应变，经数据处理后获得桩基切向冻胀力。本发明通过布置土层冻结深度监测系统实时观测被测土层的温度与竖向冻胀量，可确定测试时桩周土层的冻结状态，并通过桩顶施加预设荷载模拟桩基实际工作状态，可确定桩基实际工作状态下的桩基切向冻胀力。
In-situ test method for tangential frost heaving force of pile foundation in seasonal frozen soil area
The invention relates to the technical field of foundations, in particular to an in-situ test method for tangential frost heaving force of a pile foundation in a seasonal frozen soil area, which comprises the following steps: step 1, manufacturing a test pile, constructing an anchor pile, excavating a temperature measuring well and arranging a soil layer freezing depth monitoring system; 2, a pile foundation loading system is installed at the top of the test pile; 3, the datum piles and the datum beams are installed; step 4, loading to a preset load at the top of the test pile in a grading manner; and 5, the soil layer temperature, the soil layer vertical frost heaving amount and the pile body axial strain are measured and read, and the tangential frost heaving force of the pile foundation is obtained after data processing. The soil layer freezing depth monitoring system is arranged to observe the temperature and the vertical frost heaving amount of the tested soil layer in real time, the freezing state of the soil layer around the pile during testing can be determined, the actual working state of the pile foundation is simulated by applying the preset load to the pile top, and the tangential frost heaving force of the pile foundation in the actual working state of the pile foundation can be determined.
本发明涉及地基基础技术领域，尤其涉及一种季节性冻土地区桩基切向冻胀力原位测试方法，包括以下步骤：步骤1、制作试桩，施工锚桩，开挖测温井并布置土层冻结深度监测系统；步骤2、在试桩顶部安装桩基加载系统；步骤3、安装基准桩和基准梁；步骤4、在试桩顶部分级加载至预设荷载；步骤5、测读土层温度、土层竖向冻胀量和桩身轴向应变，经数据处理后获得桩基切向冻胀力。本发明通过布置土层冻结深度监测系统实时观测被测土层的温度与竖向冻胀量，可确定测试时桩周土层的冻结状态，并通过桩顶施加预设荷载模拟桩基实际工作状态，可确定桩基实际工作状态下的桩基切向冻胀力。
In-situ test method for tangential frost heaving force of pile foundation in seasonal frozen soil area
一种季节性冻土地区桩基切向冻胀力原位测试方法
YU YONGTANG (author) / OUYANG SHAN (author) / ZENG TAO (author) / ZHENG JIANGUO (author) / MENG ZHAOHU (author) / ZHANG JIAN (author) / TANG LIYUN (author) / LIANG YI (author)
2024-03-26
Patent
Electronic Resource
Chinese
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