考虑组合荷载影响下扬州泵闸枢纽静动力特征研究  

Study on Static and Dynamic Characteristics of Yangzhou Pump Brake Junction Under Combined Load

作　　者：沈春林 田扬[2] Shen Chunlin;Tian Yang(Nantong Jiuweigong Water Conservancy Project Management Office,Nantong 226300,Jiangsu;Jiangsu Water Conservancy Project Management Ofice of Jiangsu Province,Yangzhou 225200,Jiangsu)

机构地区：[1]南通市九圩港水利工程管理所,江苏南通226300 [2]江苏省江都水利工程管理处,江苏扬州225200

出　　处：《陕西水利》2023年第11期4-7,14,共5页Shaanxi Water Resources

摘　　要：为研究扬州泵闸枢纽在考虑上部结构-桩土组合荷载下其静动力响应特征,引入粘弹性边界理论,以仿真计算方法对闸站不同工况下静动力特征开展对比分析。研究表明,增大闸前水位,结构位移、第一及第三主应力均增大,同时闸站结构以Z向沉降为变形主导,控制Z向沉降乃是结构设计关键;虽有水工况下主应力、位移均高于无水工况,但两工况下静力特征满足设计要求。研究获得了闸站结构在有、无水工况中自振特性,振型演化差异在较大计算阶次下呈现;不论是何种地震波输入,有水工况下动力响应水平均高于无水工况,三种地震波输入下以南京波引起动力响应水平最大。结果可为扬州泵闸枢纽结构设计及水工建筑静、动力计算分析提供参考。In order to study the static and dynamic response characteristics of Yangzhou pump and brake junction under superstructure-pile-soil combined load,the viscoelastic boundary theory was introduced and the static and dynamic characteristics of the brake station under different working conditions were compared by simulation calculation method.The results show that with the increase of the water level in front of the gate,the structural displacement,the first and third principal stresses increase.At the same time,the deformation of the gate structure is dominated by the Z-direction setlement,and controlling the Z-direction settlement is the key to the structural design.Although the principal stress and displacement under water condition are higher than that under no water condition,the static characteristics of the two conditions meet the design requirements.The natural vibration characteristics of gate structure with and without water are obtained,and the difference of vibration mode evolution is presented under larger calculation order.No matter what kind of seismic wave input,the dynamic response level under the condition of water is higher than that under the condition of no water.The results can provide reference for the structural design of Yangzhou pump gate hub and the static and dynamic calculation and analysis of hydraulic buildings.

关 键 词：组合荷载 扬州泵闸枢纽 静动力 流固耦合 

分 类 号：TV66[水利工程—水利水电工程]