基岩地基上心墙堆石坝基座体型对基座结构的影响  

Influence of Base Shape of Core Wall Rockfill Dam on Bedrock Foundation on the Base Structure

作　　者：李海斌 范冬杨 王康 王俊杰 李玉桥 LI Hai-bin;FAN Dong-yang;WANG Kang;WANG Jun-jie;LI Yu-qiao(China Hydroelectric Construction Group 15th Engineering Bureau Co.,Ltd.,Chongqing 404703,China;PowerChina Guiyang Engineering Corporation Limited,Guiyang 550081,China;College of Materials Science and Engineering,Chongqing Jiaotong University,Chongqing 400074,China;Chongqing Tengyun Engineering Consulting Co.,Ltd.,Chongqing 409000,China)

机构地区：[1]中国水电建设集团十五工程局有限公司,重庆404703 [2]中国电建集团贵阳勘测设计研究院有限公司,贵州贵阳550081 [3]重庆交通大学材料科学与工程学院,重庆400074 [4]重庆腾云工程咨询有限公司,重庆409000

出　　处：《水电能源科学》2024年第2期113-116,165,共5页Water Resources and Power

基　　金：重庆市教委科学技术研究计划重点项目(KJZD-K202000705)。

摘　　要：为研究合适的基座体型方案,以重庆巫山庙堂水库为例,采用数值模拟的方法分析了基座上游侧角、下游侧角和宽度对心墙与基座连接结构的影响,并提出了基座体型优化方案。结果表明,对于基座应力,影响程度由大到小依次为下游侧角>基座宽度>上游侧角;对于心墙竖向位移,影响程度由大到小依次为上游侧角>下游侧角>基座宽度;优化方案有利于连接结构的应力安全和变形控制,各项指标均有不同程度下降,尤其是拉应力最大值较初始方案降低了71.1%,此优化方案可供同类工程参考。In order to study a suitable base shape scheme,taking the Miaotang Reservoir in Wusan as an example,numerical simulation was used to analyze the effects of different factors including upper side angle,downstream side angle of base and width on the core-wall and base connection structure.And then an optimization plan for the base shape was proposed.The results indicate that for the stress of the base,the degree of impact in descending order is:downstream side angle>base width>upstream side angle;For the vertical displacement of the core wall,the degree of impact in descending order is:upstream side angle>downstream side angle>base width;The optimization plan is conducive to deformation control and stress safety of the connection structure,with various indicators decreasing to varying degrees,especially the maximum tensile stress decreased by 71.1% compared to the initial plan.This optimization plan can be used as a reference for similar projects.

关 键 词：基岩 堆石坝 基座 应力变形 

分 类 号：TV641.41[水利工程—水利水电工程]