金沙江下游水电站数字混凝土研究与应用  

Digital concrete for hydropower stations in lower Jinsha River

作　　者：何殷鹏 张梦溪[1] 李文伟 闵巧玲 田丹 沈扬 李明超[1] HE Yinpeng;ZHANG Mengxi;LI Wenwei;MIN Qiaoling;TIAN Dan;SHEN Yang;LI Mingchao(State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University,Tianjin 300350,China;China Three Gorges Corporation,Beijing 100038,China)

机构地区：[1]天津大学水利工程仿真与安全国家重点实验室,天津300350 [2]中国长江三峡集团有限公司,北京100038

出　　处：《水力发电学报》2022年第10期1-17,共17页Journal of Hydroelectric Engineering

基　　金：国家自然科学基金(51879185,52179139);国家自然科学基金重点项目(U2040222)。

摘　　要：针对我国高混凝土坝建设“安全、高质、高效、经济、绿色”的目标,本文首先将数据驱动和机理驱动相结合,提出了融合信息与机理的数字混凝土技术,探讨了国内外已有数字混凝土理论的区别,建立了混凝土材料的数字孪生体;其次,根据数字混凝土架构从智能分析数据库、骨料生成与投放和水化动力特性赋能角度展开论述,诠释了数字混凝土构建与赋能过程,并回顾各种赋能技术的研究进展;随后,依托金沙江下游溪洛渡、向家坝和乌东德高混凝土坝,从数据抢救、高掺粉煤灰联合筑坝技术、低热水泥筑坝技术阐述数字混凝土的应用探索;最后对技术难点和应用前景进行总结。本文所提出的数字混凝土是混凝土材料另一个维度上的再现,能够联系纳-微-细-宏观角度结构性能演化机理进行跨尺度联动分析,从材料层次为大坝智能建设提供可靠的数据支撑和决策依据。Aimed at the goal of safety, high quality, high efficiency, economy and greenness in the construction of high concrete dams, this paper combines data-driven and mechanism-driven features and describes a digital concrete technology of integrating information and mechanism. And differences in the previous digital concrete theories used in China and abroad are discussed, and digital twins of concrete are developed. Then, based on the architecture of digital concrete, we discuss its composition and energizing technology from three aspects: intelligent analysis database, aggregate generation and packing,and hydration dynamic characteristics. Recent advancements in the research of its energizing technology are reviewed. We discuss its applications to data rescue, combined dam construction technology with high percentage fly ash concrete, and low heat cement dam technology, through examining the high concrete dams of Xiluodu, Xiangjiaba and Wudongde in the lower Jinsha River. Finally, its technical difficulties and application prospects are summarized. The digital concrete presented in this paper is a representation of concrete materials in another dimension. It can be used for cross-scale analysis based on the evolution mechanism of structural performance from the perspectives of nano-, micro-, meso-and macro-scales,and provides a reliable data support and decision basis for intelligent dam construction from the material aspect.

关 键 词：数字混凝土 智能分析数据库 高混凝土坝 机理赋能 跨尺度联动 

分 类 号：TV431[水利工程—水工结构工程]