水力发电学报2025，Vol.44Issue(6)：109-120,12.DOI:10.11660/slfdxb.20250611
掺砾相变黏土心墙冬季施工多热源联合控温优化
Optimization of multiple heating measures for winter construction temperature control of gravel-clay core wall with phase change material
摘要
Abstract
Gravel-clay mixed with phase change material(GC-PCM)can prevent a core wall from freeze-thaw damage during winter construction.Consequently,it's necessary to investigate how to efficiently improve the anti-freezing performance of this novel damming material at a low cost.This study develops an optimization method of multiple heating measures for temperature control of the core wall made of GC-PCM during winter construction.First,we formulate respectively two procedures for heating GC-PCM:air circulation for large-scale construction stage,and infrared irradiation for the stage after completion of GC-PCM filled into the core wall;then we establish a multi-objective optimization model for GC-PCM temperature control using these two procedures to minimize the total time and energy consumption.Moreover,detailed steps are given to solve the model using the Non-dominated Sorting Genetic Algorithm-Ⅱ(NSGA-Ⅱ),based on the improved Best/Middle/Worst Ideal Solution-Technique for Order Preference by Similarity to Ideal Solution(BMW-TOPSIS).Case study shows that for GC-PCM at an initial temperature of 4℃under a multi-year average wind speed of 1.8 m/s,the optimal procedures can be adopted:Heating GC-PCM with a hot air blower temperature of 16.5℃and a bottom heat source temperature of 15.6℃,and then implementing infrared heating at a moving speed of 0.70 m/s for 2 passes.The optimization method developed in this study lays a theoretical basis for fast selection of GC-PCM heating procedures under multiple condition combinations in practical dam construction.关键词
掺砾黏土/防冻控温/相变材料/通风加热/红外辐射/多目标优化Key words
gravel-clay/anti-freezing and temperature control/phase change material/air circulation heating/infrared irradiation/multi-objective optimization分类
建筑与水利引用本文复制引用
梁健羽,刘东海,岳雪琴..掺砾相变黏土心墙冬季施工多热源联合控温优化[J].水力发电学报,2025,44(6):109-120,12.基金项目
国家自然科学基金面上项目(51979189 （）
52279136) （）
