山区高速公路高填方路基温度场规律  

The temperature field law of high-fill embankment of highway

作　　者：阳恩慧[1] 何金宏 刘星宇 廖春泉 王凯 徐彬轩 邱延峻[1] YANG Enhui;HE Jinhong;LIU Xingyu;LIAO Chunquan;WANG Kai;XU Binxuan;QIU Yanjun(School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,China;Sichuan Highway and Bridge Construction Group Limited,Chengdu 610041,China;Sichuan Zhenguang Expressway Co.,Ltd.,Chengdu 610041,China)

机构地区：[1]西南交通大学土木工程学院,成都610031 [2]四川公路桥梁建设集团有限公司,成都610041 [3]四川镇广高速公路有限责任公司,成都610041

出　　处：《交通科技与经济》2025年第2期44-48,共5页Technology & Economy in Areas of Communications

基　　金：国家自然科学基金项目(52278460,52178438);四川省科技计划项目(2024NSFSC0016,23NSFSC0015)。

摘　　要：西南山区存在较多高填方路堤,为了确保公路在使用期间的安全性,高填方路基的设计与施工必须实施管控与监测。为明确高填方路基的温度场规律,分别在路肩及路基中心处分层埋设新型智能单点沉降计,根据现场实测数据分析高填方路基的施工期间温度变化规律。对比分析不同路基深度及不同埋设位置的温度数据,探讨路基温度场的影响因素,如气候条件、路基深度和土壤热性质。结果表明,左右路肩间的最大温差为1.912℃,路肩与路基中心间的最大温差为1.318℃。填土路基的平均温度较高,深层最大温差为4.139℃,表层最大温差可达7.16℃,填石路基的表层温度变化较为平缓。研究确认,太阳辐射对土体温度场的分布有很大影响,表层温度受当日天气状况影响较大,但对路基深层温度影响较小,而季节性环境温度变化对深层温度影响显著。地基浅层温度波动较大,而深层温度变化较平缓且有滞后效应,填土路基的表层受环境温度影响较明显。The complex terrain in the southwestern mountainous regions often involves significant high-fill embankment issues.To ensure the safety of highways during service,strict control and monitoring must be implemented in the design and construction of high-fill embankments.To elucidate the temperature field patterns of high-fill embankments,new intelligent single-point settlement gauges were installed at various depths,including road shoulders and embankment centers.Based on on-site measurements,the temperature variation patterns during the construction of high-fill embankments were analyzed.Comparative analysis of temperature data from different embankment depths and locations was conducted to explore influencing factors such as climatic conditions,embankment depth,and soil thermal properties.Results indicate that the maximum temperature difference between the left and right shoulders is 1.912℃,and between the shoulder and embankment center is 1.318℃.The average temperature of fill embankments is higher,with a maximum temperature difference of 4.139℃at depth and up to 7.16℃at the surface.In contrast,the surface temperature variation of stone-filled embankments is relatively stable.The study confirms that solar radiation is the primary heat source affecting soil temperature distribution,with daily weather having a minor impact on deep embankment temperatures,while seasonal temperature variations have a significant effect.Temperature fluctuations are greater at shallow depths,while deeper temperatures exhibit more gradual changes with a lag effect.The surface temperature of fill embankments is more responsive to environmental temperature changes.

关 键 词：道路工程 路基温度场 影响因素 高填方路基 智能监测系统 

分 类 号：U213.1[交通运输工程—道路与铁道工程]