摘要
为适应中小型渡槽特点,在普溪河渡槽项目中对造槽机原结构进行了调整,导致出现了局部结构应力集中、主梁下部非过跨主受力区域截面强度不足、承载状态下内外梁因刚度不一致不能协调变形等问题。通过对上口顶丝及内倒角压模的优化,改善了混凝土外观质量;通过为造槽机增加避雷及可开合顶棚,使其具备了全天候作业能力。实践证明以上改进及优化效果显著,可为同类造槽机设计提供参考。
The original structure of the groove machine is adjusted in Puxi River Aqueduct Project in order to adapt to the characteristics of small and medium-sized aqueduct,thereby leading to the following problems:local structural stress concentration,insufficient cross-section strength on the lower part of the main beam in the non-cross-span main stress area,and failure of internal and external beams to coordinate deformation due to inconsistent stiffness under load bearing state.In addition,the appearance quality of concrete is improved by optimizing the top wire of the upper port and chamfering die.The machine has all-weather operation ability through adding lightning protection and open-close roof to the groove machine.The practice has proved that the above improvement and optimization effect is significant,which can provide reference for the design of similar groove machines.
作者
郭强
张涛
杨超
GUO Qiang;ZHANG Tao;YANG Chao(Hubei Dayu Water Conservancy and Hydropower Construction Co.,Ltd.,Wuhan 430061,China;Yichang Dongfengqu Irrigation District Administration,Yichang 443000,China;Yichang Water Conservancy and Hydropower Survey and Design Institute,Yichang 443000,China)
出处
《水利建设与管理》
2019年第1期29-34,共6页
Water Conservancy Construction and Management
基金
湖北省水利重点科研项目
项目编号:HBSLKY201724
关键词
造槽机
应力集中
协调变形
优化
groove machine
stress concentration
coordination deformation
optimization
