大体积混凝土防裂智能监控技术及工程应用

Mass concrete crack prevention intelligent monitoring technology and engineering application

防裂是混凝土坝建设中的一个重要任务。绝大多数混凝土坝裂缝都与温度应力有关,因此温度控制是防裂的主要手段。本文在总结国内几十座混凝土坝温控防裂实践经验的基础上,以现有温控防裂理论为技术支撑,紧密结合大体积混凝土温控防裂工作中的关键技术问题,采用理论分析、数值计算、软硬件研发、室内试验、现场试验等多种手段,通过深入研究形成了智能化监控感知—分析—控制的三步曲架构,开发了一套具有完整自主知识产权的大体积混凝土防裂智能化监控系统。该系统在鲁地拉、藏木、锦屏一级等工程获得成功应用,以混凝土温控施工监控的智能促进温控施工的精细化,达到大体积混凝土防裂的根本目的。

Crack control is an important issue in construction of concrete dams,the vast majority of con-crete cracks is related to temperature stress. And so,Temperature control is the main means of crack con-trol.After summarizing experience of dozens of concrete dam,supported by the existing temperature crackprevention theory,closely integrated the key technical problems of Mass concrete temperature control,thetheoretical analysis,numerical computation,software and hardware development,laboratory tests,field testsand other means is executed,andthe theory methods,models,key technologies and system are been re-searched. Theintelligent temperature control of perception-analysis control is formed,and Mass concretecrack prevention intelligent monitoring system is developed. The technology is successfully applied in Lu Di-La;Zang Mu and Jinping projects. Through the concrete construction intelligent promote its fineconstruction,thepursues of crack prevention is reached.