基于智能温控的混凝土坝个性化温控优化方法研究Intelligent temperature control-based study on individualized optimization scheme for temperature control of concrete dam
张磊,王建,范瑞朋,刘毅,张国新
摘要(Abstract):
由于以往混凝土坝的温控标准和措施制定主要是从质量角度考虑,对经济方面的考虑涉及不多,因此需要从质量达标和经济最优两方面探讨混凝土坝防裂的个性化温控优化方法。首先,通过建立全环节温控指标关联模型和调控方法,以建立的各环节经济关系模型为约束函数进行多约束求解,实现温控标准的全局优化。然后,将优化的各温控指标以及相应的措施方案纳入到智能温控系统,进行温控施工过程的评价、预警报警和反馈调控。最后,基于提出的智能温控全环节调控方法,对目前正在实施的某工程智能温控系统开展了试验性应用测试。结果表明:(1)应适当提高机口温度,浇筑过程中,应加强仓面喷雾动态控制,以使温度控制的单位成本最低;(2)升温阶段加大通水流量至3 m~3/s左右,其控制最高温度成本也较低。此温控防裂设计优化方法与智能温控技术相结合的模式,以达到经济最优和质量达标为总体目标,同工程设计和施工高度融合,非常有利于混凝土坝温控的实施效果。
关键词(KeyWords): 混凝土坝;温控防裂;温控标准;智能温控;经济最优
基金项目(Foundation): 国家重点研发计划项目(2018YFC0406703);; 国家自然科学基金资助项目(51779277);; 中国水科院科研专项(SS0145B712017,SS0145B612017,SS0145B392016);; 流域水循环模拟与调控国家重点实验室资助项目(SKL2020ZY10,SS0112B102016);; 中国华能集团科技项目(HNKJ20-H21TB)
作者(Author): 张磊,王建,范瑞朋,刘毅,张国新
DOI: 10.13928/j.cnki.wrahe.2021.08.002
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