| 寒区隧道温度简谐波传热特征与影响因素的敏感性 |
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| 引用本文： | 赵鑫,张洪伟,杨晓华,来弘鹏,王学营,赵晓亮.寒区隧道温度简谐波传热特征与影响因素的敏感性[J].交通运输工程学报,2020,20(6):148-160. |
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| 作者姓名： | 赵鑫 张洪伟 杨晓华 来弘鹏 王学营 赵晓亮 |
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| 作者单位： | 1.长安大学 公路学院, 陕西 西安 7100642.内蒙古自治区交通建设工程质量监督局, 内蒙古 呼和浩特 010010 |
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| 基金项目： | 交通运输行业重点科技项目清单;国家自然科学基金;新疆维吾尔自治区自然科学基金;内蒙古交通厅建设科技项目 |
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| 摘 要： | 为探究寒区隧道温度场的时空演化规律, 以波的视角从时间尺度和空间尺度建立了寒区隧道温度简谐波径向传热模型, 基于傅里叶传热定律推导了寒区隧道温度简谐波径向传热表达式; 依托兴安岭公路隧道温度测试结果, 验证了温度简谐波径向传热表达式的可行性, 分析了温度简谐波沿隧道径向深度的分布特征与随冻融周期的变化规律; 采用系统稳定分析法, 研究了温度简谐波对各影响因素归一化的敏感度因子。研究结果表明: 沿隧道径向深度0.00~4.00 m, 温度振幅呈负指数函数形式衰减, 变化范围为11.67℃~0.45℃; 温度相位移呈正比例函数形式增大, 变化范围为0.00~75.24 d; 年平均温度呈线性升高的趋势, 变化范围为-0.62℃~1.98℃; 受隧道区气温逐年变暖趋势的影响, 隧道进口端壁面年平均温度从2016~2019年升高了约0.75℃, 年平均温度随冻融周期逐年增大, 2.00 m深度内年平均温度受冻融周期影响较大, 超过2.00 m年平均温度受冻融周期影响相对较小; 隧道进口端壁面温度振辐从2016~2019年衰减了1.48℃, 温度振幅随冻融周期逐年衰减, 2.00 m深度内温度振幅衰减较快, 超过2.00 m温度振幅衰减较慢; 隧道进口端壁面日相位从2016~2019年延迟了7.20 d, 日相位随冻融周期逐年增大。温度简谐波对各影响因素的敏感性由高到低依次为壁面温度振幅、壁面年平均温度、围岩含冰率、围岩含水率、围岩孔隙率、骨架颗粒的质量热容量与导热系数。
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| 关 键 词： | 隧道工程 温度简谐波 温度振辐 相位移 敏感性分析 |
| 收稿时间： | 2020-07-30 |
Heat transfer characteristics for temperature of simple harmonic quantity in the cold-region tunnel and sensitivity of influencing factors |
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| ZHAO Xin,ZHANG Hong-wei,YANG Xiao-hua,LAI Hong-peng,WANG Xue-ying,ZHAO Xiao-liang.Heat transfer characteristics for temperature of simple harmonic quantity in the cold-region tunnel and sensitivity of influencing factors[J].Journal of Traffic and Transportation Engineering,2020,20(6):148-160. |
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| Authors: | ZHAO Xin ZHANG Hong-wei YANG Xiao-hua LAI Hong-peng WANG Xue-ying ZHAO Xiao-liang |
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| Affiliation: | 1.School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China2.Inner Mongolia Autonomous Region Transport Construction Engineering Quality Supervision Bureau, Huhhot 010010, Inner Mongolia, China |
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| Abstract: | In order to investigate the spatial-temporal changing laws of temperature field in cold-region tunnels, a radial heat transfer model was established of temperature of simple harmonic quantity in the cold-region tunnel according to the time and space scales from the perspective of waves. Moreover, the radial heat transfer expression of temperature of simple harmonic quantity in the cold-region tunnel was deduced based on Fourier's laws of heat transfer. Based on the temperature test results of Xing'anling Highway Tunnel, the feasibility of the radial heat transfer expression of temperature of simple harmonic quantity was verified. Distribution characteristics of temperature of simple harmonic quantity in radial depth and its variation with freeze-thaw cycles were analyzed. The sensitivity factor for this temperature was normalized to each influence factor using the system stability analysis method. Analysis result shows that within the tunnel radial depth of 0.00-4.00 m, the temperature amplitude has a range of 11.67 ℃-0.45 ℃ and it decays as a negative exponential function. The temperature phase shift has a range of 0.00-75.24 d and it increases as a proportional function. The average annual temperature increases linearly and has a range of-0.62 ℃-1.98 ℃. Affected by the annual warming trend of temperature at the tunnel site, the average annual temperature on the tunnel wall at the entrance increases by approximately 0.75 ℃ from 2016 to 2019, which increasing every year with the freeze-thaw cycles. The average annual temperature is greatly affected by the freeze-thaw cycles within a depth of 2.00 m, but less affected at depths beyond 2.00 m. The temperature amplitude on the tunnel wall at the entrance decreases by 1.48 ℃ from 2016 to 2019, and that attenuates every year with the freeze-thaw cycles. The temperature amplitude decays faster below the depth of 2.00 m, but slower above 2.00 m. The day phase on the tunnel wall at the entrance is delayed by 7.20 d from 2016 to 2019, which continues to rise every year within freeze-thaw cycles. The sensitivities of temperature of simple harmonic quantity to each influence factor from high to low are temperature amplitude and average annual temperature of tunnel wall, ice content, water content and porosity of surrounding rock, specific heat capacity and thermal conductivity of skeleton particles. |
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