环境温度对地下管廊温度场与力学特性的影响  

Influences of ambient temperature on temperature field and mechanical behaviors of underground pipe galleries

作　　者：崔飞龙 杨俊超 王进尚 张亚涛 李丽华[4] CUI Feilong;YANG Junchao;WANG Jinshang;ZHANG Yatao;LI Lihua(Zhengzhou University of Technology,Zhengzhou 450044,China;Guangzhou First Municipal Engineering Co.,Ltd.,Guangzhou 510060,China;China Construction Railway Investment Development and Construction Co.,Ltd.,Jinan 250100,China;Hubei University of Technology,Wuhan 430068,China)

机构地区：[1]郑州工程技术学院,河南郑州450044 [2]广州市第一市政工程有限公司,广东广州510060 [3]中建铁投开发建设有限公司,山东济南250100 [4]湖北工业大学,湖北武汉430068

出　　处：《岩土工程学报》2024年第S02期87-91,共5页Chinese Journal of Geotechnical Engineering

基　　金：河南省高等学校重点科研项目(23B560017);广州市建筑集团有限公司科技计划项目(2022-KJ019,2022-KJ026,2022-KJ027)。

摘　　要：季冻区季节性温度变化对地下管廊的工程应用性能产生显著影响,为了研究季冻区环境温度对地下管廊温度场和力学特性的影响,采用ABAQUS有限元数值模拟技术分别研究了季节性环境温度作用下地下管廊温度场和土压力的变化规律。数值分析结果表明:管廊竖向截面最大冻深明显滞后于最低环境温度出现时刻;在升温与降温过程中,管廊上部及附近区域温度场先后出现“冷核区”和“热核区”等特殊现象,随着升温与降温的持续作用而逐渐消失;在降温与升温过程中,管廊顶板土压力先后出现增加与减小趋势;当季节性温度变化作用结束后,管廊顶板土压力显著大于初始状态。Seasonal temperature changes in the seasonal frozen areas have a significant impact on the engineering application performance of the underground pipe galleries.To study the effects of ambient temperature in the seasonal frozen areas on the temperature field and mechanical behaviors of the underground pipe galleries,the change laws of temperature field and earth pressure of the underground pipeline galleries under seasonal ambient temperature are studied by conducting the ABAQUS finite element numerical simulation.The numerical analysis results indicate that the occurent moment of the maximum freezing depth of the vertical section inside the pipe gallery is lagged behind that of the lowest ambient temperature.During the process of heating and cooling,the temperature fields inside the upper and nearby areas of the pipe gallery successively exhibit the special phenomena such as“cold core zone”and“hot core zone”.These phenomena gradually disappear with the continuous effects of heating and cooling.During the cooling and heating processes,the earth pressure on the roof of the pipe gallery shows an increasing and decreasing tendency.After the influences of seasonal temperature,the earth pressure on the roof is significantly greater than that at the initial state.

关 键 词：环境温度 温度场 力学特性 管廊 数值模拟 

分 类 号：TU432[建筑科学—岩土工程]