|
|||||
|
|
| 地震作用下立式储液罐罐壁"象足"变形仿真分析 | |
| 引用本文： | 范喜哲,郑天心,王伟,吴灵宇,何雪.地震作用下立式储液罐罐壁"象足"变形仿真分析[J].地震工程与工程振动,2007,27(3):104-109. |
| 作者姓名： | 范喜哲 郑天心 王伟 吴灵宇 何雪 |
| 作者单位： | 1. 中油吉林化建工程股份有限公司,吉林,吉林,132021;哈尔滨工业大学,黑龙江,哈尔滨,150001 2. 哈尔滨工业大学,黑龙江,哈尔滨,150001 3. 中油吉林燃料乙醇有限责任公司,吉林,吉林,132021 |
| 基金项目： | 国家自然科学基金,50678056, |
| 摘 要： | 基于ANSYS软件建立了考虑液体晃动和罐底提离立式储液罐有限元模型,分别进行了水平地震和竖向地震作用下罐壁"象足"变形分析.分析表明:立式储液罐罐壁"象足"变形主要是由罐壁纵向压应力超过临界应力而产生的局部屈曲破坏,并非强度破坏.因罐底提离导致的罐底与基础反复撞击加大了作用在罐壁上的应力,使罐壁底部"象足"变形不断发展,最终导致罐壁撕裂.在完全相同地震加速度作用下,水平地震作用比竖向地震作用罐壁更早更容易进入屈曲状态,产生"象足"变形. |
| 关 键 词： | 立式储液罐 地震作用 象足变形 |
| 文章编号： | 1000-1301(2007)03-0104-06 |
| 修稿时间： | 2006年12月18 |
Numerical analysis of elephant foot bulging for elevated liquid-storage tank under seismic ground motion |
|
| FAN Xizhe,ZHENG Tianxin,WANG Wei,WU Lingyu,HE Xue.Numerical analysis of elephant foot bulging for elevated liquid-storage tank under seismic ground motion[J].Earthquake Engineering and Engineering Vibration,2007,27(3):104-109. | |
| Authors: | FAN Xizhe ZHENG Tianxin WANG Wei WU Lingyu HE Xue |
| Institution: | 1. China Petroleum Jilin Chemical Engineering and Construction Co. , Ltd. Jilin 132021, China; 2. School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China; 3. China Petroleum Jilin fuel ethanol company limited, Jilin 132021, China |
| Abstract: | The elephant foot bulging deformation of rigid walls of liquid-storage tanks under horizontal and vertical seismic ground motions is analyzed by using the finite element model involving fluid sloshing and tank bottom uplift with ANSYS.The numerical results show that the elephant foot bulging is in fact buckling failure which is caused by the overcritical compressive stress rather than intensity failure.The elephant foot bulging deformation develops with the increasing stress of the rigid wall,which is caused by the uplift of the tank bottom and the impaction between the tank bottom and the foundation. It is also shown that the buckling failure of the rigid wall arises easier from the horizontal seismic ground motion than from the vertical one,therefore the elephant foot bulging deformation is also easier produced. |
| Keywords: | elevated liquid-storage tank seismic ground motion elephant foot bulging |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |