Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Evaluation method for freeze-thaw damage degree of frozen soil roadbed
The invention discloses a frozen soil roadbed freeze-thaw damage degree evaluation method, which comprises the following steps: step 1, based on frozen soil roadbed thermal-water-force coupling analysis, obtaining a volume ice content field, a von Mises stress field and a volume strain field of a roadbed at different moments; step 2, within a period of statistical time, according to the volume ice content field, the von Mises stress field and the volume strain field obtained in the step 1, obtaining a volume ice content standard deviation field, a von Mises stress standard deviation field and a volume strain standard deviation field of the roadbed; and step 3, calculating the freeze-thaw damage field of the roadbed according to the volume ice content standard deviation field, the von Mises stress standard deviation field and the volume strain standard deviation field of the roadbed obtained in the step 2. According to the method, the damage degree is defined on the basis of the standard deviation of the volume ice content, the von Mises stress and the volume strain index, then the damage field is obtained, de-dimensionalization of evaluation indexes is achieved, and depiction of roadbed freeze-thaw damage is achieved in spatial distribution.
本发明公开了一种冻土路基冻融损伤程度的评价方法，包括以下步骤：步骤1、基于冻土路基热‑水‑力耦合分析，获取路基不同时刻的体积含冰量场、冯米塞斯应力场和体积应变场；步骤2、在一段统计时间内，根据步骤1得到的所述体积含冰量场、冯米塞斯应力场和体积应变场，获取路基的体积含冰量标准差场、冯米塞斯应力标准差场、体积应变标准差场；步骤3、根据步骤2得到的所述路基的体积含冰量标准差场、冯米塞斯应力标准差场、体积应变标准差场计算路基冻融损伤场。本发明以体积含冰量、冯米塞斯应力、体积应变指标的标准差为基础，定义损伤度，继而得到了损伤场，既实现了评价指标的去量纲化，又在空间分布上实现了对路基冻融损伤的刻画。
Evaluation method for freeze-thaw damage degree of frozen soil roadbed
The invention discloses a frozen soil roadbed freeze-thaw damage degree evaluation method, which comprises the following steps: step 1, based on frozen soil roadbed thermal-water-force coupling analysis, obtaining a volume ice content field, a von Mises stress field and a volume strain field of a roadbed at different moments; step 2, within a period of statistical time, according to the volume ice content field, the von Mises stress field and the volume strain field obtained in the step 1, obtaining a volume ice content standard deviation field, a von Mises stress standard deviation field and a volume strain standard deviation field of the roadbed; and step 3, calculating the freeze-thaw damage field of the roadbed according to the volume ice content standard deviation field, the von Mises stress standard deviation field and the volume strain standard deviation field of the roadbed obtained in the step 2. According to the method, the damage degree is defined on the basis of the standard deviation of the volume ice content, the von Mises stress and the volume strain index, then the damage field is obtained, de-dimensionalization of evaluation indexes is achieved, and depiction of roadbed freeze-thaw damage is achieved in spatial distribution.
本发明公开了一种冻土路基冻融损伤程度的评价方法，包括以下步骤：步骤1、基于冻土路基热‑水‑力耦合分析，获取路基不同时刻的体积含冰量场、冯米塞斯应力场和体积应变场；步骤2、在一段统计时间内，根据步骤1得到的所述体积含冰量场、冯米塞斯应力场和体积应变场，获取路基的体积含冰量标准差场、冯米塞斯应力标准差场、体积应变标准差场；步骤3、根据步骤2得到的所述路基的体积含冰量标准差场、冯米塞斯应力标准差场、体积应变标准差场计算路基冻融损伤场。本发明以体积含冰量、冯米塞斯应力、体积应变指标的标准差为基础，定义损伤度，继而得到了损伤场，既实现了评价指标的去量纲化，又在空间分布上实现了对路基冻融损伤的刻画。
Evaluation method for freeze-thaw damage degree of frozen soil roadbed
一种冻土路基冻融损伤程度的评价方法
HE XIANZHI (Autor:in) / ZENG CHAO (Autor:in) / LIU XIAO (Autor:in) / JIANG HUI (Autor:in)
13.10.2023
Patent
Elektronische Ressource
Chinesisch
Construction method for preventing roadbed slope freeze-thaw instability in plateau frozen soil area
| Europäisches Patentamt | 2020
Freeze-thaw cycle roadbed disposal method and structure
| Europäisches Patentamt | 2022
Pavement structure for thaw collapse deformation of frozen soil roadbed
| Europäisches Patentamt | 2022