隧道高强衬砌混凝土水化热与温度调控技术研究  

Research on hydration heat and temperature control technology of high-strength lining concrete in tunnels

作　　者：张恺瑞 陈四利 王军祥 张城芋 ZHANG Kairui;CHEN Sili;WANG Junxiang;ZHANG Chengyu(School of Architecture and Civil Engineering,Shenyang University of Technology,Shenyang 110870,China)

机构地区：[1]沈阳工业大学建筑与土木工程学院,辽宁沈阳110870

出　　处：《混凝土与水泥制品》2025年第1期19-24,共6页China Concrete and Cement Products

基　　金：国家自然科学基金项目(51974187、51774066);辽宁省自然科学基金项目(2019-MS-242);辽宁省教育厅重点攻关项目(LZGD2020004)。

摘　　要：以辽宁省某隧道工程为依托,采用数值模拟方法研究了隧道高强衬砌混凝土的水化热,分析了其内部温度的变化规律,采用极差、方差分析方法研究了冷却水管的流量、入流温度和直径3个因素对混凝土水化热的影响。结果表明:冷却水管的3个因素对混凝土水化热的影响程度依次为:入流温度>直径>流量;温度调控建议冷却水管设置间距为1 m、流量为1.2 m3/h、入流温度为20℃、直径为30 mm,该控温措施有助于降低混凝土的内外温差,有效预防温度裂缝的产生,从而提高隧道高强衬砌混凝土结构的安全性和耐久性能。Based on a tunnel project in Liaoning Province,a numerical simulation method was used to study the hydration heat and the temperature changes of high-strength lining concrete during the hydration process.Further,the polar variance method was used to systematically analyze the effects of flow rate,inflow temperature,and diameter of cooling water pipe on the hydration heat of high-strength lining concrete in tunnels.The results indicate that the degree of influence of the three factors of cooling water pipes on the hydration heat of high-strength lining concrete in tunnels is as follows:inlet temperature>diameter>flow rate.Specific suggestions for temperature regulation include using cooling water pipes with a spacing of 1 m,a flow rate of 1.2 m3/h,an inlet temperature of 20℃,and a diameter of 30 mm.These measures help to reduce temperature differences and effectively prevent the occurrence of temperature cracks,thereby improving the safety and durability of high-strength lining concrete structures in tunnels.

关 键 词：高强衬砌混凝土 水化热 温度调控 应力 数值模拟 

分 类 号：TU528.1[建筑科学—建筑技术科学]