摘要
堆石坝密实度是评价其质量好坏的重要指标。本文以高密度面波的基本原理为基础,建立了不同密实度堆石体的数值模型,采用有限元数值模拟法,研究面波在堆石体结构中的传播特性,建立了堆石体密实度与面波速度的关系曲线,并对已建水库的堆石坝进行了工程应用,同时论述了有限元数值建模和检测数据处理流程。可得出:(1)考虑基阶模态的反演分析时,堆石坝体密实度与面波波速成抛物线性关系,与材料的弹性模量相关性不大;(2)对已建堆石坝内部密实度进行快速的无损检测,并实现定量评价,可作为已建堆石坝压实质量评价的依据。
The compactness of rock-filled dam is an important index to evaluate its quality.In this paper,numerical simulation of rock-filled models with different densities are established based on the basic princi-ples of high-density surface waves.The finite element method is used to study the propagation characteris-tics of surface waves in the rock-filled dam.The relationship curve between the different density of the rock-filled body and the surface wave velocity was established,and it was applied to the rock-filled dam of the built reservoir.The paper describes the finite element numerical modeling and processing flow of test data.It can be concluded that:1)When the inversion analysis of the fundamental mode is considered,the compactness of the rock-filled dam has a parabola relationship with the surface wave velocity,and has lit-tle correlation with the elastic modulus of the materials;2)The rapid non-destructive detection on the inter-nal density of the built rock-filled dam is carried out,and quantitative evaluation is also obtained,which is used as the foundation for the quality and safety evaluation of the built rock-filled dam.
作者
克里木
李辉
冯少孔
朱新民
黄涛
Kelimu;LI Hui;FENG Shaokong;ZHU Xinmin;HUANG Tao(Xinjiang Administration of Water Resources and Hydropower Planning and Design,Urumqi 830000,China;State Key Laboratory Simulation and Regulation of Water Cycle in River Basin,China Institute of Water Resources and Hydropower Research,Beijing 100038,China;School of Naval Architectural,Ocean and Civil Engineering,Shanghai Jiao-tong University,Shanghai 200240,China)
出处
《中国水利水电科学研究院学报》
北大核心
2020年第5期337-346,共10页
Journal of China Institute of Water Resources and Hydropower Research
基金
国家重点研发计划项目(2018YFC0406901)。
关键词
堆石坝
高密度面波法
密实度
无损检测
Rock-filled Dam
High Density Surface Wave Method
Compactness
Non-destructive Detection
