高水头船闸阀门顶止水安装变形试验与数值模拟  

Test and numerical simulation of installation deformation of top seal of high-head ship lock valve

作　　者：魏述和 王新[2] WEI Shu-he;WANG Xin(School of Architectural Engineering,Kaili University,Kaili 556011,China;Key Laboratory of Navigation Structure Construction Technology,Ministry of Transport,Nanjing Hydraulic Research Institute,Nanjing 210029,China)

机构地区：[1]凯里学院建筑工程学院,贵州凯里556011 [2]南京水利科学研究院,通航建筑物建设技术交通行业重点实验室,江苏南京210029

出　　处：《水运工程》2020年第3期92-97,120,共7页Port & Waterway Engineering

基　　金：国家自然科学基金面上项目(51779151);贵州省科技计划项目(黔科合LH字[2017]7169)。

摘　　要：针对高水头船闸反弧门顶止水安装变形的问题,采用止水切片试验和数值模拟相结合的方法,研究半圆头型止水在不同安装荷载作用下的变形轮廓、位移变形、头部凸起和接触宽度等安装变形规律及等效应力分布规律.结果表明,基于力学试验获得原型材料参数和接触力学计算理论,止水变形数值模拟结果与1∶1切片试验结果吻合较好;随着安装扭矩增大,止水半圆形头部凸起高度近似线性增大,胸墙处止水接触宽度呈非线性变化趋势;止水头部与压板、座板接触边界位置应力梯度最大,是止水最易发生损坏的部位.Aiming at the installation deformation of the top seal of reversed tainter valve for high-head ship lock,we apply the method of water stop slice test combining with numerical simulation, and study installation deformation properties of semicircular head top seal, such as the deformation profile, displacement deformation,bulge height and contact width of head, and the distribution law of equivalent stress under different installation loads.The results show that based on prototype material parameters obtained by the mechanical test and theory of contact mechanics calculation, the results of seal deformations obtained by numerical simulation are in good agreement with the results of the scale 1: 1 slice test.With the increase of installation torque,the bulge height of the semi-circular head increases approximately linearly,the contact width at the parapet shows a non-linear trend,and the maximum equivalent stress gradient appears at the boundary of seal head contacting with clamp plate and seat plate,which is the most easily damaged part of top seal.

关 键 词：高水头船闸 顶止水 切片试验 数值模拟 安装变形 

分 类 号：U641.1[交通运输工程—船舶及航道工程]