高耸升船机塔柱结构抗风数值风洞模拟  

Numerical wind tunnel simulation of wind resistance for tower structure of high-rise ship lift

作　　者：郭博文[1] 赵兰浩[1] 刘文化[2] 

机构地区：[1]河海大学水利水电学院,江苏南京210098 [2]安徽省水利水电勘测设计院,安徽合肥230088

出　　处：《水利水电科技进展》2016年第6期80-85,共6页Advances in Science and Technology of Water Resources

基　　金：国家自然科学基金(51279050);中央高校基本科研业务费专项(2014B36714)

摘　　要：利用数值风洞模型技术,采用原始不可压缩黏性流体N-S方程描述风场的运动,建立合适的计算域边界条件,基于ADINA有限元分析软件,提出了一种高耸升船机塔柱结构抗风分析方法,并通过算例验证了该方法的正确性和有效性;结合工程实例,分析了升船机塔柱结构的风致响应,求得升船机塔柱结构风载体型系数,推导了升船机塔柱结构顺风向风振系数表达式,并与规范值进行了对比。数值模拟结果表明:高耸升船机塔柱结构顺风向最大位移出现在其迎风面顶部附近;数值风洞模型计算得到的升船机塔柱结构风载体型系数大于规范值;对于顺风向风振系数而言,在结构高度90 m以上区域规范值都偏小。In this study, numerical wind tunnel simulation technology was used, the incompressible Navier-Stokes equations for viscous fluids were employed to describe the motion of the wind,and appropriate boundary conditions for the computational domain were established. In this way,a new method for wind resistance analysis for a tower structure of a high-rise ship lift was developed based on the ADINA software for finite element analysis. The correctness and validity of this method were verified with an example. Combined with a project case,the wind-induced response of the ship lift tower structure was analyzed,and the wind-load shape coefficient of the ship lift tower structure was obtained,the expression of the downwind vibration coefficient of the ship lift tower structure was derived,and the calculated wind-load shape coefficient and downwind vibration coefficient were compared with the results obtained from the specification. Numerical simulation results show that the downwind maximum displacement of the high-rise ship lift tower structure occurs near the top of its windward side. The wind-load shape coefficient of the ship lift tower structure obtained from the numerical wind tunnel simulation technology is greater than the result obtained from the specification. The downwind vibration coefficient obtained from the specification is lower than that obtained from the numerical wind tunnel simulation for the whole region,except in the region below the elevation of the structure of 90 m.

关 键 词：升船机 塔柱结构 数值风洞 风致响应 风载体型系数 风振系数 

分 类 号：U642.1[交通运输工程—船舶及航道工程]