考虑材料与环境温度时程的池壁结构温度场模拟及验证

作者：蒋振天¹,罗彬²,李林桑²,郏鸿韬³,毛江鸿¹’⁴

作者简介：

蒋振天，硕士研究生，E-mail:624560144@ qq. com

作者单位：

1.重庆交通大学土木工程学院，重庆 400074; 2.中国建筑第七工程局有限公司，河南郑州 450000;3.浙江省建投交通基础建设集团有限公司，浙江杭州 310012; 4.四川大学建筑与环境学院，四川成都 615100

基金项目：

∗四川省科学技术厅区域创新合作项目（2022YFQ0048）

摘要：

为掌握全地埋污水厂混凝土池壁结构的温度场特性，以四川省成都市洗瓦堰再生水厂工程为例，采用无线物联网系统实时监测池壁混凝土及其周边环境温度，利用有限元软件 ABAQUS 建立考虑环境温度作用的池壁混凝土水化热分析模型，对池壁不同工况进行温度场仿真分析。结合实测数据与仿真结果，对比池壁在冬季、夏季不同位置的温度分布规律，揭示水化温度、昼夜温差的影响作用，分析结构厚度、混凝土龄期对池壁内外温差和降温速率的影响。分析结果表明，夏季进行池壁结构施工，相比冬季更易受水化温度、昼夜温差影响。当结构厚度≥2.5m时，池壁混凝土存在热裂风险。

关键词：池壁结构；温度场；有限元分析；物联网；环境温度

English：

To understand the temperature field characteristics of the concrete pool wall structure in fullyunderground sewage treatment plants, taking the Xiwayan wastewater reclaimation plant project inChengdu, Sichuan Province as an example, a wireless IoT system was used to monitor the temperature ofthe pool wall concrete and its surrounding environment in real time. A finite element software ABAQUSwas used to establish a hydration heat analysis model of the pool wall concrete considering the effect ofenvironmental temperature, and the temperature field simulation analysis of the pool wall under differentworking conditions was carried out. Combining the measured data with the simulation results, thetemperature distribution laws at different positions of the pool wall in winter and summer were compared,revealing the influence of hydration temperature and diurnal temperature difference. The influence ofstructural thickness and concrete age on the temperature difference between the inside and outside of thepool wall and the cooling rate was analyzed. The results show that, the construction of the pool wallstructure in summer is more susceptible to the influence of hydration temperature and diurnal temperaturedifference compared to winter. When the structural thickness is ≥2.5m, there is a risk of thermalcracking in the pool wall concrete.

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试验研究 > 2025年 第卷 第17期