钢筋混凝土水塔结构改造加固研究  

Retrofit of reinforced concrete water tower structure

作　　者：周长东[1] 陈阳 ZHOU Changdong;CHEN Yang(School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China)

机构地区：[1]北京交通大学土木建筑工程学院,北京100044

出　　处：《四川建筑科学研究》2020年第5期1-7,共7页Sichuan Building Science

基　　金：国家自然科学基金(51678039,51478033,51727813)。

摘　　要：为了对废弃的北京市某钢筋混凝土倒锥壳式水塔进行改造再利用,拟将水塔结构改造成为新建结构的电梯井和屋顶水箱。结合现有水塔改造利用实例与钢筋混凝土倒锥壳式水塔的结构特点,根据改造后电梯井的使用需求,本文提出了3种在水塔支筒上开洞的改造方案。针对开洞后的水塔结构,提出了局部加固与整体加固2种方案。使用大型有限元软件ABAQUS建立水塔结构模型,分析了开洞改造对结构动力特性与地震易损性的影响,研究了不同加固方案对结构性能的提升效果。In order to reuse the abandoned reinforced concrete inverted cone shell water tower in Beijing,this paper plans to transform the water tower structure into elevator shaft and roof water tank of the new structure.Combined with the reconstruction and utilization examples of existing water tower and the structural characteristics of reinforced concrete inverted cone shell water tower,three schemes are proposed to open holes in the branch of water tower according to the use demand of the elevator shaft after the reconstruction.Two schemes of local and integral strengthening are put forward for water tower structure after opening.The nonlinear analytical model of water tower structure was established by the finite element software ABAQUS,the influence of the openings on the dynamic characteristics and vulnerability of the structure,and the effect of different strengthening schemes on the structural performance were analyzed.

关 键 词：水塔结构 改造加固 区域易损性 三维地震 增量动力分析 

分 类 号：TU279.741[建筑科学—建筑设计及理论]