开敞式防洪闸闸室结构抗震安全分析及加固措施研究  

Seismic Safety Analysis and Reinforcement Measures Research of Open Floodgate Chamber Structure

作　　者：郭博文 范冰 宋力[1,2] 韩玉龙 GUO Bowen;FAN Bing;SONG Li;HAN Yulong(Yellow River Institute of Hydraulic Research,Zhengzhou 450003,China;Research Center on Levee Safety and Disaster Prevention,Ministry of Water Resources,Zhengzhou 450003,China;Kunming Engineering Corporation Limited,Kunming 650051,China)

机构地区：[1]黄河水利科学研究院,河南郑州450003 [2]水利部堤防安全与病害防治工程技术研究中心,河南郑州450003 [3]中国电建集团昆明勘测设计研究院有限公司,云南昆明650051

出　　处：《人民黄河》2024年第4期153-156,162,共5页Yellow River

基　　金：黄委优秀青年人才科技项目(HQK-202314);河南省自然科学基金青年科学基金项目(202300410545);黄河水利科学研究院科技发展基金项目(黄科发202208)。

摘　　要：以处于地震基本烈度8度区的某开敞式防洪闸为例,基于有限元分析软件,采用时程分析法对闸室结构抗震能力进行了分析。针对闸室上部启闭机房结构存在的抗震缺陷,制定了不同的抗震加固方案,通过不同加固方案抗震能力对比分析,比选了较优加固方案,并在较优方案基础上,探究了连通梁截面尺寸对闸室结构加固效果的内在影响规律。结果表明:地震作用下防洪闸闸室结构启闭机房排架柱折角位置处出现较大拉应力区,其最大拉应力超过了结构承载能力,不满足抗震安全需求;在各排架柱之间增设连通梁可降低启闭机房结构动力响应,但设计过程中为避免启闭机房结构产生鞭梢效应,不宜在顶部位置增设;连通梁截面尺寸对启闭机房排架柱结构抗震能力影响显著,实际工程中可通过控制截面尺寸达到理想的抗震加固效果。Taking an open flood control gate located in the VIII degree area of the basic seismic intensity as an example and based on ADINA finite element analysis software,the seismic capacity of the gate chamber structure was analyzed by the time history analysis method.Aiming at the aseismic defects of the upper hoist room structure of the gate chamber,different aseismic reinforcement schemes were formulated.Through the comparison and analysis of the aseismic capacity of different reinforcement schemes,the better reinforcement scheme was select-ed.On the basis of the better scheme,the internal influence law of the section size on the reinforcement effect of the gate chamber structure was explored.The results show that there is a large tensile stress area at the bent angle of the hoist room bent column of the flood gate cham-ber structure under the earthquake action,and the maximum tensile stress value exceeds the bearing capacity of the structure,which does not meet the seismic safety requirements.The addition of connecting beams between each bent column can reduce the dynamic response of the hoist room structure,however,it should not be added at the top in the design process to avoid whiplash effect in the hoist room structure.The section size of the connecting beam has a significant influence on the seismic capacity of the bent column structure of the hoist room.In the actual project,the ideal seismic reinforcement effect can be achieved by controlling the section size.

关 键 词：闸室结构 数值模拟 抗震能力分析 抗震加固措施 

分 类 号：TV691[水利工程—水利水电工程]