基于时程分析法的进水塔连系梁结构动力响应  

Dynamic Response of Water Intake Tower Connected Beam Structure Based on Time History Analysis

作　　者：王雨[1] 李守义[1] WANG Yu;LI Shouyi(Xi’an University of Technology,Xi’an 710048,China)

机构地区：[1]西安理工大学,陕西西安710048

出　　处：《人民黄河》2022年第4期128-131,135,共5页Yellow River

基　　金：国家自然科学基金资助项目(51479165);陕西省自然科学基础研究计划项目(2019JQ-577);陕西省教育厅专项科研计划项目(19JK0583)。

摘　　要：针对高耸进水塔连系梁结构在动力荷载作用下容易发生破坏的问题,采用时程分析法,计算进水塔结构在地震荷载下的动力响应,对比研究横梁与纵梁截面形式与截面尺寸对进水塔关键部位的应力和位移的影响。结果表明:增大横梁整体截面尺寸,不仅可以减小横梁的轴向拉应力,而且可以限制拦污栅墩的位移;增大横梁端部截面尺寸的效果与增大横梁整体截面尺寸的相似,且混凝土用量有一定程度减少;增大纵梁整体截面尺寸会使其轴向拉应力增大,与胸墙连接部位的最大主应力也有所增大,将对结构产生不利影响;增大纵梁端部截面尺寸可减小纵梁自身的轴向拉应力,对进水塔结构的安全有利。In view of the problem that the high⁃rise water tower connected beam structure is prone to failure under the dynamic load,the dy⁃namic response of the water tower structure under the seismic load was calculated by using the temporal analysis method,and the influence of cross section form and cross section size of beam and longitudinal beam on the stress and strain of key parts of the water tower was compared.The results show that increasing the cross section size of the beam will reduce the axial tensile stress of the beam itself and limit the displace⁃ment of the interceptor pier.The effect of increasing the section size of the beam end is similar to that of increasing the overall section size of the beam.Increasing the overall section size of the longitudinal beam will increase the axial tensile stress,and the maximum principal stress of the part connected with the parapet wall will also increase,which will adversely affect the structure.Increasing the section size of the end of the longitudinal beam can reduce the axial tensile stress of the longitudinal beam itself,which is beneficial to the safety of the water intake tower structure.

关 键 词：进水塔结构 拦污栅 连系梁 时程分析法 应力 应变 

分 类 号：TV312[水利工程—水工结构工程]