水利学报2017，Vol.48Issue(10)：1135-1146,12.DOI:10.13243/j.cnki.slxb.20170696
考虑压实质量影响的碾压混凝土坝层间结合质量动态评价研究
Dynamic evaluation of RCC dam Interlayer bonding quality considering the influence of compaction quality
摘要
Abstract
Evaluation of the interlayer bonding quality is the key way for controlling the roller compacted concrete dam (RCC dam) construction.The existing study only considered the influences of layer processing and the interval time,which ignored the influence of the compaction quality on the interlayer bonding quality.Besides,there is no dynamic evaluation study of the interlayer bonding quality.In this study,an interlayer bonding quality dynamic evaluation model considering the influence of the compaction quality and its uncertainties based on the real-time monitoring system is proposed and the model contains three main contents:(1) processing the concrete characteristic parameters based on the entropy-blind number theory,and the compaction degree dynamic calculation method considering the uncertainties of the parameters is proposed.The compaction degree calculation results will be used in the interlayer bonding quality evalua tion;(2) the deference value between the concrete initial setting time and the interval time is calculated as the evaluation factor,which solves the feasibility problem of the model in different seasons;and (3) a three level evaluation factors system is built,and the mapping relationship between the interlayer bonding quality and the interval time and the compaction degree is established.Combining the practical engineering,the interlayer bonding quality of an RCC dam is evaluated dynamically using the model based in the real time monitoring system.The evaluation results proved that the study model can evaluate the interlayer bonding quality and provide more information including the parameter uncertainty.The dynamic evaluation model of interlayer bonding quality can give more practical results.关键词
碾压混凝土坝/层间结合质量/层间间隔时间/压实度/熵-盲数/不确定性Key words
RCC dam/interlayer bonding quality/interval time/compaction degree/entropy-blind number/uncertainty分类
建筑与水利引用本文复制引用
钟登华,鄢玉玲,崔博,吴斌平,胡炜,吕鹏..考虑压实质量影响的碾压混凝土坝层间结合质量动态评价研究[J].水利学报,2017,48(10):1135-1146,12.基金项目
国家重点基础研究发展计划(973计划)(2013CB035904) （973计划）
国家自然科学基金项目(51439005) （51439005）
国家自然科学基金创新群体基金项目(51621092) （51621092）
