摘要
新疆KLYML水库大坝为沥青混凝土面板坝,供水灌溉洞穿过大坝中坝段,进水塔塔体置于上游坝坡之中。为了保证防渗体系的整体有效性,确保供水灌溉洞与大坝面板之间的接头能适应两者的相对变形,本文截取供水灌溉洞所在坝段,建立面板接头的有限元精细模型,对进水塔塔身与面板上游坝坡之间的接头以及大坝底部灌溉洞进水口与面板之间接头的三向变形进行计算,为接头的具体结构设计提供依据。同时,为了反映接头部位两侧结构相互作用的影响,对接头部位的摩擦系数选取两种数值进行对比分析。结果表明,供水灌溉洞与大坝面板之间接头的最大张开位移、最大剪切位移和最大沉陷值分别为5.61、3.62和3.69 cm,当进水塔和进水口混凝土结构与面板之间结合力较弱的时候,接头变形会进一步加大。
The dam of Xinjiang KLYML reservoir is an asphalt concrete face slab dam with a water supply tunnel for irrigating passing through the middle dam section.The intake tower was designed at the up-stream slope of the slab.It is important to ensure the efficacy of the whole seepage control system and make sure that the joint can adapt to the relative deformation between the tunnel and the slab.In the pa-per,the dam section of water supply tunnel for irrigating was selected to set up the FEM refined model for slab joints analysis.The three-dimension deformation of the joint between the intake tower and the slab and that between the intake at the bottom of the dam and the slab was calculated as the basis for struc-ture design.In the same time,the contrastive analysis of two different friction factors of the joint was done to reflect the interaction between the structures on both sides of the joint.The results show that the maxi-mum values of opening displacement,shear displacement and subsidence of the joint between the tunnel and the slab are 5.61cm,3.62cm and 3.69cm;when the interaction between the intake tower or the intake and the slab is very small,the deformation of joint will be increased significantly.
作者
孙粤琳
克里木
柳莹
SUN Yuelin;Kelimu;LIU Ying(China Institute of Water Resources and Hydropower Research,Beijing 100038,China;State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin,Beijing 100038,China;Xinjiang Administration of Water Resources and Hydropower Planning and Design,Urumqi 830000,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347-353,共7页
Journal of China Institute of Water Resources and Hydropower Research
基金
国家重点研发计划资助项目(2018YFC0407102,2018YFC0407103)
中国水科院基本科研业务费项目(SM0145B632017,SM0145B952017)。
关键词
沥青混凝土面板坝
供水灌溉洞
接头变形
有限元计算
asphalt concrete face slab dam
water supply tunnel for irrigating
joint deformation
FEM anal-ysis
