摘要
针对整体式闸室结构内力及位移受闸室高度影响较大的问题,采用有限元分析方法,研究了大高宽比整体式闸室结构内力及位移。得出以下结论:1)当高宽比超过某一数值时,整体式闸室底板边墩根部正弯矩值大于底板跨中负弯矩值,底板厚度由正弯矩决定。2)当高宽比小于某一数值时,趋势正好相反。3)对大高宽比闸室结构,在闸墙后方设置踵板或卸荷板均能减小底板边墩根部正弯矩值、增大跨中负弯矩值、减小闸墙位移。这样底板受力更均衡,从而减小底板厚度,以期优化设计、节约造价。
Considering that the internal force and displacement of the monolithic lock chamber structure are greatly affected by the height of the lock chamber,this study investigates the internal force and displacement of the monolithic lock chamber structure with a large height-width ratio by the finite-element analysis method.The conclusions drawn are as follows:1)When the height-width ratio exceeds a certain value,the positive bending moment at the root of the side pier of the bottom plate of the monolithic lock chamber is larger than the negative bending moment in the middle of the bottom plate span,and the thickness of the bottom plate is determined by the positive bending moment.2)When the height-width ratio is less than that value,the trend is just the opposite.3)For a lock chamber structure with a large height-width ratio,setting a heel plate or an unloading plate behind the lock wall can reduce the positive bending moment at the root of the side pier of the bottom plate,increase the negative bending moment in the middle of the span,and ultimately reduce the displacement of the lock wall.In this way,a more uniform force on the bottom plate allows the thickness of the bottom plate to be reduced to optimize the design and save the cost.
作者
钟华林
邹永超
汤建宏
ZHONG Hua-lin;ZOU Yong-chao;TANG Jian-hong(JSTI Group,Nanjing 210019,China;Jiangsu Port Engineering Center of Green Technology Integration,Nanjing 210019,China;School of Transportation and Logistics Engineering,Wuhan University of Technology,Wuhan 430063,China;CCCC Water Transportation Consultants Co.Ltd.,Beijing 100007,China)
出处
《水运工程》
北大核心
2022年第9期135-140,共6页
Port & Waterway Engineering
关键词
整体式闸室
结构内力
水平位移
优化设计
monolithic lock chamber
internal force of structure
horizontal displacement
optimal design
