冲口门水闸过渡段挡墙设计对结构静力及渗流场影响研究  

Research on the Influence of the Design of the Retaining Wall in the Transition Section of the Chongkoumen Sluice on the Static Force and Seepage Field of the Structure

作　　者：黄利国 HUANG Liguo(Zhongshan Cuiheng New District Engineering Project Construction Affairs Center, Zhongshan 528400, China)

机构地区：[1]中山翠亨新区工程项目建设事务中心,广东中山528400

出　　处：《广东水利水电》2022年第7期8-13,共6页Guangdong Water Resources and Hydropower

摘　　要：基于南朗镇冲口门水闸过渡段挡墙结构的设计优化,采用UG建模与数值仿真计算的方法,分析了不同拐角设计方案下结构静力与渗流场特征。流量愈大,挡墙拉应力愈大,流量梯次增长48 m3/s下,折线、直角与圆弧拐角方案中拉应力分别平均可增长8.7%、9.6%、4.8%;拐角直角、圆弧式挡墙拉应力为最高与最低;直角与折线拐角方案中土压力在高流量工况下具有较高水平,而圆弧拐角方案下土压力分布水平低于前两者。挡墙拐角处变形高于两侧,拐角区域分布有大变形,3种拐角方案中最大位移值差异较小;直角拐角方案受流量促进影响下位移增幅最大,而圆弧拐角增长最慢。研究得到渗流场中折线拐角方案流速水平及波幅均为最高,圆弧拐角方案流速适中,且其波幅最低。综合静力与渗流场影响特征,圆弧拐角挡墙方案更适配冲口门水闸过渡段。研究成果可为水工结构设计优化多维度评价提供参考。Based on the design optimization of the retaining wall structure in the transition section of the Chongkoumen sluice in Nanlang Town,the static and seepage field characteristics of the structure under different corner design schemes are analyzed by using UG modeling and numerical simulation calculation methods.The greater the flow rate,the greater the tensile stress of the retaining wall.When the flow rate increases by 48m3/s,the tensile stress in the broken line,right angle and arc corner schemes can increase by 8.7%,9.6%and 4.8%on average respectively;The tensile stress of the wall is the highest and the lowest;the earth pressure in the right-angle and broken-line corner schemes has a higher level under high flow conditions,while the earth pressure distribution level in the arc corner scheme is lower than the former two.The deformation at the corner of the retaining wall is higher than that on both sides,and there is large deformation in the corner area.The difference in the maximum displacement value is small among the three corner schemes;the right-angle corner scheme has the largest displacement increase under the influence of flow promotion,while the arc corner has the slowest increase.The study shows that the flow velocity level and amplitude of the broken line corner scheme are the highest in the seepage field,and the flow velocity of the arc corner scheme is moderate and its amplitude is the lowest.Considering the influence characteristics of static force and seepage field,the arc corner retaining wall scheme is more suitable for the transition section of the chongkoumen sluice.The research results can provide reference for multi-dimensional evaluation of hydraulic structure design optimization.

关 键 词：冲口门水闸 挡墙 静力 流速 

分 类 号：TV66[水利工程—水利水电工程]