球形储罐地震响应影响因素分析  

ANALYSIS OF INFLUENCING FACTORS OF SEISMIC RESPONSE OF SPHERICAL TANK

作　　者：李庆洋 王向英 杨世德 许卫晓[1] 于德湖[1,2] LI Qingyang;WANG Xiangying;YANG Shide;XU Weixiao;YU Dehu(School of Civil Engineering,Qingdao University of Technology,Shandong Qingdao 266033,China;Shandong Jianzhu University,Jinan 250101,China)

机构地区：[1]青岛理工大学土木工程学院,山东青岛266033 [2]山东建筑大学,济南250101

出　　处：《低温建筑技术》2023年第9期95-99,共5页Low Temperature Architecture Technology

基　　金：国家自然科学基金项目“自复位导管架大型风机的多灾机理、控制与设计方法”(U2106222)。

摘　　要：为研究场地条件、球罐储液量、地震动输入方向对球罐地震响应的影响,文中以工程中常见的1000m3球形储罐为背景,用ANSYS中的APDL编程命令流,建立球罐的有限元模型,对不同场地条件的球罐进行了非线性时程分析。将球罐的储液量分为空罐、半罐以及满罐3种状态,分析了因储液量改变引起的球罐频率改变对地震响应的影响。此外对球罐结构变换不同的地震动输入方向,分析了地震动输入方向对球罐地震响应的影响。研究结果表明,第Ⅳ类场地的球罐各项地震响应最大,Ⅲ类场地次之;同时球罐的地震响应与储液量正相关;而地震动输入方向的改变对球罐结构的地震反应基本无影响。Taking a 1000m3 spherical tank commonly used in engineering as the case,the effectiveness of site condi⁃tions,liquid storage capacity of spherical tanks,and seismic input direction on the seismic response of spherical tanks are studied.A finite element model of the spherical tank is established by APDL programming command flow in ANSYS.Nonlinear time history analysis is conducted on spherical tanks under different site conditions.The liq⁃uid storage capacity of the spherical tank is divided into empty tank,half tank,and full tank.The influence of the fre⁃quency change of the spherical tank caused by the change of the liquid storage capacity on the seismic response is analyzed.In addition,the influence of ground motion input direction on the seismic response of spherical tank is ana⁃lyzed by changing different ground motion input directions.The results show that the seismic response of the spheri⁃cal tank in the classⅣsite is the largest,followed by the classⅢsite.At the same time,the seismic response of the spherical tank is positively correlated with the liquid storage capacity.The change of the input direction of the ground motion has no effect on the seismic response of the spherical tank structure.

关 键 词：球形储罐 ANSYS建模 地震响应影响因素 

分 类 号：TU352[建筑科学—结构工程]