西安建筑科技大学学报(自然科学版)

以大阪山隧道温度场模型试验为例,基于相似理论对寒区运营隧道温度场相似关系进行了研究,运用方程分析法推导了模型试验相似准则,实现了模型试验几何条件、边界条件及材料参数的相似,并将其应用于隧道温度场模型试验.结合现场实测数据,从隧道洞内气温,围岩冻结深度方面与模型试验数据进行了对比分析,结果表明:修正之后的模型试验结果与现场实测数据吻合效果较好,说明本次相似关系的拟定是合理的,可以为寒区运营隧道温度场的研究及模型试验相似材料的选取提供一定的参考价值.

Taking the temperature field model of Da Ban Mountain Tunnel as an example, the similarity theory of operating tunnel temperature is studied on the basis of similarity theory of model test. The similarity criterion of the model test is deduced by the equation analysis method, and the similarity of the geometric conditions, boundary conditions and material parameters of the model test is realized and applied to the tunnel temperature field model test. Combined with the field measured data, the temperature in the tunnel and the freezing depth of the surrounding rock are compared with the model test data. The results show that the modified model test results are in good agreement with the field measured data, indicating that the formulation of this similarity relationship is reasonable. The study can provide some reference value for the study of the temperature field of the operating tunnel in the cold region and the selection of similar materials for the model test.

引言
1 相似理论
2 材料配置
3 模型、现场数据对比效果评价
4 结论

表1 隧道原型与模型主要设计参数<br/>Tab.1 Design parameters of tunnel prototype and model

表1 隧道原型与模型主要设计参数
Tab.1 Design parameters of tunnel prototype and model

图1 隧道模具
Fig.1 Tunnel mould

图2 养护成型隧道<br/>Fig.2 Curing formed tunnel

图2 养护成型隧道
Fig.2 Curing formed tunnel

表2 试验材料参数<br/>Tab.2 Parameters of experiment material

表2 试验材料参数
Tab.2 Parameters of experiment material

图3 隧道模型冷冻试验系统<br/>Fig.3 Tunnel model freezing test system

图3 隧道模型冷冻试验系统
Fig.3 Tunnel model freezing test system

图4 现场11月与模型洞内气温变化曲线<br/>Fig.4 Tunnel air temperature between model and field in November

图4 现场11月与模型洞内气温变化曲线
Fig.4 Tunnel air temperature between model and field in November

图5 现场12月与模型洞内气温变化曲线<br/>Fig.5 Tunnel air temperature between model and field in December

图5 现场12月与模型洞内气温变化曲线
Fig.5 Tunnel air temperature between model and field in December

表3 方程系数取值<br/>Tab.3 Value of function coefficient

表3 方程系数取值
Tab.3 Value of function coefficient

图6 修正模型与现场隧道洞内气温变化曲线(现场11月)<br/>Fig.6 Air temperature between modified model and field in November

图6 修正模型与现场隧道洞内气温变化曲线(现场11月)
Fig.6 Air temperature between modified model and field in November

图7 修正模型与现场隧道洞内气温变化曲线(现场12月)<br/>Fig.7 Air temperature between modified model and field in December

图7 修正模型与现场隧道洞内气温变化曲线(现场12月)
Fig.7 Air temperature between modified model and field in December

图8 现场隧道11月及模型侧拱围岩冻结深度<br/>Fig.8 Frozen depth of side arch between model and field in November

图8 现场隧道11月及模型侧拱围岩冻结深度
Fig.8 Frozen depth of side arch between model and field in November

图9 现场隧道12月及模型侧拱围岩冻结深度<br/>Fig.9 Frozen depth of side arch between model and field in December

图9 现场隧道12月及模型侧拱围岩冻结深度
Fig.9 Frozen depth of side arch between model and field in December

表4 大阪山隧道11月及修正模型边墙围岩冻结深度<br/>Tab.4 Freezing depth of surrounding rock of side wall of Osaka mountain tunnel in November and revised model

表4 大阪山隧道11月及修正模型边墙围岩冻结深度
Tab.4 Freezing depth of surrounding rock of side wall of Osaka mountain tunnel in November and revised model

表5 大阪山隧道12月及修正模型边墙围岩冻结深度<br/>Tab.5 Freezing depth of surrounding rock of side wall of Osaka mountain tunnel in December and revised model

表5 大阪山隧道12月及修正模型边墙围岩冻结深度
Tab.5 Freezing depth of surrounding rock of side wall of Osaka mountain tunnel in December and revised model

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备注

引言

1 相似理论

2 材料配置

3 模型、现场数据对比效果评价

4 结论

期刊信息