堆石混凝土绝热温升曲线特征及速率模型  

Characteristics of Adiabatic Temperature Rise Curve and Model of Adiabatic Temperature Rise Rate of Rock-filled Concrete

作　　者：权娟娟[1] 王鼎 罗滔 张天祺 傅少君 王怡[1] QUAN Juanjuan;WANG Ding;LUO Tao;ZHANG Tianqi;FU Shaojun;WANG Yi(Shaanxi Key Laboratory of Safety and Durability of Concrete Structure,Xijing University,Xi′an,Shaanxi 710123,China;Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education,Northwest A&F University,Yangling,Shaanxi 712100,China;School of Civil Engineering,Wuhan University,Wuhan,Hubei 430072,China)

机构地区：[1]西京学院陕西省混凝土结构安全与耐久性重点实验室,陕西西安710123 [2]西北农林科技大学旱区农业水土工程教育部重点实验室,陕西杨凌712100 [3]武汉大学土木建筑工程学院,湖北武汉430072

出　　处：《水利与建筑工程学报》2024年第1期1-8,共8页Journal of Water Resources and Architectural Engineering

基　　金：陕西省科技厅自然科学基金资助项目(2023-JC-YB-482);西京学院大学生创新创业训练计划项目(X202312715086);横向课题(2023610002004929)。

摘　　要：为了探究堆石混凝土温升机制,对6种不同堆石率、3种不同初始浇筑温度、3种不同堆石级配的堆石混凝土进行绝热温升试验。分析堆石率、初始浇筑温度、堆石级配对堆石混凝土绝热温升和温升速率曲线的影响规律。并在绝热温升规律的基础上,提出一种通用的堆石混凝土绝热温升速率模型,用于描述绝热温升速率随龄期的变化规律。绝热温升速率模型简单,对堆石混凝土绝热温升和温升速率的描述具有较好的效果。研究结果为建立混凝土绝热温升模型奠定了基础,并有望推动通过动力学研究分析堆石混凝土的温升机理。In order to explore the temperature rise mechanism of rock-filled concrete,adiabatic temperature rise tests were conducted on rock-filled concrete with six different rockfill ratio,three different initial pouring temperatures,and three different rockfill grades.The effects of rockfill ratio,initial pouring temperatures,and rockfill grades on the adiabatic temperature rise and temperature rise rate curves of rock-filled concrete were analyzed.A universal model of adiabatic temperature rise rate of rock-filled concrete was proposed based on the adiabatic temperature rise law,which is then used to describe the variation of adiabatic temperature rise rate with age.The adiabatic temperature rise rate model is simple and has a good effect on describing the adiabatic temperature rise and temperature rise rate of rock-filled concrete.The research results have laid the foundation for establishing a concrete adiabatic temperature rise model and are expected to analyze the temperature rise mechanism of rock-filled concrete through dynamic analysis.

关 键 词：堆石混凝土 绝热温升 绝热温升速率 堆石率 浇筑温度 

分 类 号：TV64[水利工程—水利水电工程]