Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Numerical simulation method for thermal-mechanical coupling of freezing pipe constructed by artificial stratum freezing method
The invention relates to a numerical simulation method for thermal-mechanical coupling of a freezing pipe constructed through an artificial stratum freezing method. The numerical simulation method comprises the following steps that a geometric model of numerical simulation is established, and grid division is carried out; performing a test to obtain a curve of physical parameters of the soil body changing along with the temperature in freezing and thawing processes after the soil body is frozen; respectively inputting all the obtained curves into a freezing pipe temperature adjusting module and a soil parameter adjusting module which are obtained through secondary development; setting initial and boundary conditions; and inputting the volume strain change caused by the temperature field change into a mechanical calculation module, and calculating the final volume strain change and stress change of the soil body according to the geometric model of the soil body. According to the device and the method, the temperature of the freezing pipe can be automatically adjusted along with time, soil state judgment and soil parameter adjustment according to the temperature can be realized, thermal-mechanical coupling calculation is realized, a numerical simulation result is more accurate, and meanwhile, more accurate numerical simulation of frost heaving and thaw collapse is realized.
本发明涉及一种人工地层冻结法施工冻结管热力耦合的数值模拟方法，包括如下步骤：建立数值模拟的几何模型并进行网格划分；进行试验获得土体冻结后土体物理参数在冻结和融化过程中随温度变化曲线；将获得的所有曲线分别输入到二次开发得到的冻结管温度调节模块和土体参数调节模块；设定初始和边界条件；将由温度场变化引起的体积应变的变化输入到力学计算模块中根据土体的几何模型计算最终的土体体积应变变化及应力变化。本发明可以实现冻结管温度随时间的自动调节，可以实现根据温度的土体状态判断和土体参数的调整，从而实现热力耦合计算，进而使数值模拟结果更加准确，同时实现更加精准的冻胀和融沉的数值模拟。
Numerical simulation method for thermal-mechanical coupling of freezing pipe constructed by artificial stratum freezing method
The invention relates to a numerical simulation method for thermal-mechanical coupling of a freezing pipe constructed through an artificial stratum freezing method. The numerical simulation method comprises the following steps that a geometric model of numerical simulation is established, and grid division is carried out; performing a test to obtain a curve of physical parameters of the soil body changing along with the temperature in freezing and thawing processes after the soil body is frozen; respectively inputting all the obtained curves into a freezing pipe temperature adjusting module and a soil parameter adjusting module which are obtained through secondary development; setting initial and boundary conditions; and inputting the volume strain change caused by the temperature field change into a mechanical calculation module, and calculating the final volume strain change and stress change of the soil body according to the geometric model of the soil body. According to the device and the method, the temperature of the freezing pipe can be automatically adjusted along with time, soil state judgment and soil parameter adjustment according to the temperature can be realized, thermal-mechanical coupling calculation is realized, a numerical simulation result is more accurate, and meanwhile, more accurate numerical simulation of frost heaving and thaw collapse is realized.
本发明涉及一种人工地层冻结法施工冻结管热力耦合的数值模拟方法，包括如下步骤：建立数值模拟的几何模型并进行网格划分；进行试验获得土体冻结后土体物理参数在冻结和融化过程中随温度变化曲线；将获得的所有曲线分别输入到二次开发得到的冻结管温度调节模块和土体参数调节模块；设定初始和边界条件；将由温度场变化引起的体积应变的变化输入到力学计算模块中根据土体的几何模型计算最终的土体体积应变变化及应力变化。本发明可以实现冻结管温度随时间的自动调节，可以实现根据温度的土体状态判断和土体参数的调整，从而实现热力耦合计算，进而使数值模拟结果更加准确，同时实现更加精准的冻胀和融沉的数值模拟。
Numerical simulation method for thermal-mechanical coupling of freezing pipe constructed by artificial stratum freezing method
人工地层冻结法施工冻结管热力耦合的数值模拟方法
OU YAZHOU (Autor:in) / CHEN HUA (Autor:in) / WANG LONG (Autor:in) / BIAN HUI (Autor:in) / LI JIACHEN (Autor:in) / CHEN TAO (Autor:in) / GUO ZHIXIN (Autor:in) / XIONG HAO (Autor:in) / QIANG MENGYUN (Autor:in) / LIU BINGGANG (Autor:in)
23.07.2024
Patent
Elektronische Ressource
Chinesisch
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