【作者】 钟桂良；

【导师】 钟登华；

【作者基本信息】 天津大学 ， 水工结构工程， 2012， 博士

【摘要】 碾压混凝土坝施工工艺复杂、施工工期紧、施工强度大、技术要求高,给仓面施工质量控制带来了挑战。本文紧密结合碾压混凝土坝工程建设中施工质量控制领域的国际前沿科学问题,开展了碾压混凝土坝仓面施工质量控制理论与方法研究。以碾压混凝土坝仓面施工质量实时监控方法为理论基础,对相关的数学模型和应用技术进行了全方位、多角度的研究。提出了浇筑碾压质量实时监控与施工气候信息实时监控技术,实现了对碾压混凝土坝仓面施工过程质量的精细化、全天候实时监控和对仓面施工信息的动态高效集成管理与分析。这些研究成果一方面深化了碾压混凝土坝仓面施工质量控制的理论基础,填补了碾压混凝土坝仓面施工质量实时监控理论与方法研究的空白;另一方面,为碾压混凝土坝施工质量实时监控系统的建立做了开拓性的工作,取得了一系列的成果,主要包括:(1)构建了碾压混凝土坝仓面施工质量实时监控体系,建立了碾压混凝土坝仓面施工质量实时监控的数学模型。针对碾压混凝土坝仓面施工质量控制的关键科学问题,分析了碾压混凝土坝仓面施工质量控制的目标、项目和流程等关键要素,开展了碾压混凝土坝仓面施工质量实时监控理论与方法研究,提出了碾压混凝土坝仓面施工质量实时监控体系,建立了碾压混凝土坝仓面施工质量实时监控的数学模型,并实现了基于Web的碾压混凝土坝仓面施工质量实时监控三维可视化分析。该体系既丰富和发展了现有的碾压混凝土坝仓面施工质量控制理论,又为碾压混凝土坝仓面施工质量控制提供了新的思路。(2)提出了碾压混凝土坝浇筑碾压质量实时监控技术,实现了碾压层的自动辨识和监控参数的动态分析。针对碾压混凝土坝仓面施工质量实时监控的核心组成部分——浇筑碾压质量实时监控,建立了浇筑碾压质量实时监控目标函数,提出了碾压层自动辨识方法和监控参数动态分析方法,进而研发了碾压混凝土坝浇筑碾压质量实时监控系统,并基于Web网络实现了碾压混凝土坝浇筑碾压质量信息管理。该系统首次实现了对碾压混凝土坝浇筑碾压质量的实时监控,使浇筑碾压施工质量控制水平得到提升,在碾压混凝土坝施工质量控制研究领域具有开创性意义。(3)提出了碾压混凝土坝施工气候信息实时监控技术,建立了预测VC值损失量进行反馈控制的ANN模型。针对碾压混凝土坝仓面施工质量实时监控的重要组成部分——施工气候信息实时监控,建立了施工气候信息实时监控目标函数,提出了基于ANN模型预测VC值损失量进行反馈控制的方法,并研发了碾压混凝土坝施工气候信息实时监控系统。通过将施工气候信息纳入碾压混凝土坝仓面施工质量实时监控系统,将VC值损失量反馈至施工管理人员,并实时指导现场施工,为仓面施工质量控制研究开拓了新的方向。(4)研制开发了碾压混凝土坝仓面施工质量实时监控系统,该系统已成功应用于某水电站高碾压混凝土重力坝工程建设中。针对某水电站高碾压混凝土重力坝地处西南地区、夏季气温高、降雨集中,且工程规模大、施工工期紧等特点,研发了碾压混凝土坝仓面施工质量实时监控系统,实现了对大坝仓面施工过程主要环节精细化、全天候的实时监控与分析,提高了大坝仓面施工过程的质量控制水平和效率。该研究成果解决了传统施工质量控制手段无法远程、精细、实时控制施工质量和受人为因素影响较大的难题。不仅为碾压混凝土坝仓面施工与维护提供了决策依据,为碾压混凝土坝施工质量控制积累了大量宝贵的技术数据,也为类似碾压混凝土坝工程的仓面施工质量控制提供了参考。更多还原

【Abstract】 The construction of roller-compacted concrete (RCC) dam has the characteristics of complex process, tight schedule, high construction intensity and high technical requirement, which brings a great challenge to construction quality control of the working unit of RCC dam. Combining with the international frontier issues on construction quality control of RCC dam, research on construction quality control method of the working unit of RCC dam is carried on in this paper. The mathematical model and their application are carried out from multi-direction based on the real-time monitoring method for construction quality of working unit of RCC dam. The roller compaction quality real-time monitoring technique and the construction climatic information real-time monitoring technique are presented. Meticulous, all-weather and real-time monitoring for construction quality of working unit is implemented. Dynamic and efficient integration management and analysis to information of construction is realized. There are two significances. Firstly, the real-time monitoring method for construction quality of working unit of RCC dam is a theoretic extension of construction quality control method of the working unit of RCC dam. Secondly, a pioneering work is done on the establishment of real-time monitoring system for construction quality of working unit of RCC dam. The conclusions of this study are listed as follows.(1) The real-time monitoring architecture for construction quality of the working unit of RCC dam is built. The mathematical model of real-time monitoring for construction quality of the working unit of RCC dam is established.Aiming at the key scientific problems of construction quality control of the working unit of RCC dam, the key factors of construction quality control of the working unit is analyzed, such as target, elements and process. Research on the real-time monitoring method for construction quality of the working unit of RCC dam is carried on. The real-time monitoring architecture for construction quality of the working unit is proposed. The mathematical model of real-time monitoring for construction quality of the working unit is established, and the web-based 3D visualization analysis of the real-time monitoring is proposed.This real-time monitoring architecture is not only an extension of the current theory of construction quality control of the working unit of RCC dam, but also provides a new way to control construction quality of the working unit of RCC dam.(2) The roller compaction quality real-time monitoring technique is proposed. Auto identification of rolling layers and dynamic analysis of the monitoring indicators are realized.Aiming at real-time monitoring of the roller compaction quality, which is the core component of the real-time monitoring for construction quality of the working unit of RCC dam, the objective function for the roller compaction quality real-time monitoring is established. Auto identification method of rolling layers and method of dynamically analyzing the monitoring indicators are proposed. The roller compaction quality real-time monitoring system of RCC dam is developed, and the web-based management of roller compaction quality information of RCC dam is realized.This system is firstly applied in the roller compaction quality real-time monitoring of RCC dam and improves the level of roller compaction quality control. It is a tremendous innovation to construction quality control of RCC dam.(3) The construction climatic information real-time monitoring technique is proposed. The ANN model for feedback control, which can predict the loss quantity of VC value, is established.Aiming at real-time monitoring of the construction climatic information, which is an important component of the real-time monitoring for construction quality of the working unit of RCC dam, controlling objective function for the construction climatic information real-time monitoring is established. The ANN model, which is used to predict the loss quantity of VC value, is established for feedback control. The construction climatic information real-time monitoring system of RCC dam is developed.By introducing construction climatic information to real-time monitoring system for construction quality of working unit of RCC dam, the loss quantity of VC value is send to the construction managers, and feedback guidance is provided to the constructors. It is a new research direction to construction quality control of the working unit of RCC dam.(4) The real-time monitoring system for construction quality of working unit of RCC dam is developed. This system has applied to control construction quality of the high RCC gravity dam of a hydropower project successfully.The real-time monitoring system for construction quality of working unit of RCC dam is developed based on the characteristics of the high RCC gravity dam of a hydropower project locates in southwest China such as high temperature in summer, concentrated rainfall, large scale and tight schedule. Meticulous, all weather and real-time monitoring and analyzing for the key links of construction process of working unit are realized. The quality control level and efficiency are improved during construction.With this monitoring system, construction quality is controlled remotely, meticulously and real-timely, and the influence of personal factors is decreased. The basis is provided for construction and maintenance of working unit of RCC dam, and many precious technical data are provided for construction quality control of RCC dam. This successful case provides reference for construction quality control of working unit of similar RCC dam.更多还原