摘要
双江口水电站洞式溢洪道进口边坡发育有3条断层,相互切割形成典型的“陡-缓”组合滑移模式,严重影响溢洪道进口的布置。笔者结合溢洪道的特点及布置条件,分析导墙体型和闸墩设计存在的缺陷,并探索合理的闸室配筋方案。结果表明:在长度不超过15 m的超短导墙设计中,椭圆直墙型导墙更具优势;通过偏心受压构件计算以及采用闸墩与基岩共节点连续介质模式建模的有限元计算结果,确定的闸墩配筋方案较为经济合理;闸墩扇形钢筋配筋计算时,推力参照类似工程经验,取工作弧门推力的0.2倍,该取值的合理性尚需进一步验证。该研究结果可供类似工程参考。
There are three faults in the inlet slope of the tunnel-spillway of Shuangjiangkou Hydropower Station which cut each other to form a typicalsteep-gentle combined slip mode which seriously affects the layout of the spillway inlet.Based on the characteristics and layout conditions of spillway the author analyzes the defects of guide wall shape and pier design and explores reasonable reinforcement of sluice chamber.The results show that the elliptical straight wall guide wall has more advantages in the design of ultra-short guide wall with a length of no more than 15 m Combined with the calculation of eccentric compression members and the finite element calculation results of the joint continuum model of pier and bedrock it is more economical and reasonable to determine the reinforcement of pier When calculating the reinforcement of the fan-shaped steel bars in the pier the thrust is 0.2 times of the thrust of the working arc gate with reference to similar engineering experience but the rationality of the value needs to be further verified.The research results can be used as reference for similar projects.
作者
张凤财
ZHANG Fengcai(Power China Chengdu Engineering Corporation Limited ,Chengdu 610072 China)
出处
《红水河》
2025年第1期8-12,共5页
关键词
洞式溢洪道
进口布置
三维约束效应
配筋
双江口水电站
tunnel-spillway
inlet layout
three-dimensional constraint effects
reinforcement
Shuangjiangkou Hydropower Station
