600 t硝酸吸收塔吊装抱箍设计计算

 杨高传1,谢大帅2,冷冻2

(1.中铁四局集团有限公司,安徽 合肥 230023;2.西南交通大学 机械工程学院,四川 成都 610031)
摘要:提出了一种适用于大吨位薄壁筒吊装的新型抱箍结构,推导出了竖向载荷作用下螺栓预紧力计算公式。以600 t硝酸吸收塔吊装为例,利用ANSYS有限元分析软件建立了抱箍的有限元模型,通过合理边界条件的施加,探讨了弯矩作用对螺栓预紧力的影响。结合竖向载荷作用下螺栓预紧力计算公式计算出了抱箍安全吊装所须的螺栓预紧力,并在此基础上对抱箍进行强度校核,该抱箍强度满足要求。
关键词:双抱箍;螺栓预紧力;静力校核
中图分类号:TH235              文献标志码:A           doi:10.3969/j.issn.1006-0316.2014.05.001
文章编号:1006-0316 (2014) 05-0001-04
Caculation of steel-hoop used in hoisting of 600t nitric acid absorption tower
YANG Gao-chuan1,XIE Da-shuai2,LENG Dong2
( 1.China Railway No.4 Engineering Group Co, Ltd, Hefei 230023, China; 2.College of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China )
Abstract:In this paper a new kind of steel hoop used in the hoisting of big-tonnage thin-walled cylinder was introduced, and a calculation formula of the bolts’ pretension under the effect of vertical load was deduced. Taking the hoisting of 600t acid-absorption tower as an example, the finite element model of the steel hoop was established and the influence of the moment on the bolts’ pretension was researched with reasonable boundary condition pressed. Combining with the calculation formulas of the bolts’ pretension under the effect of vertical load, the bolts’ pretension required by security hoisting was calculated. On this basis, the strength of the steel hoop was checked and result showed that the steel hoop can meet the hoisting requirement.
Key words:double steel hoop;bolt pretension;static strength checking
 
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收稿日期:2013-10-28
基金项目:四川省科技支撑计划项目(2011GZ0069)
作者简介:杨高传(1962-),男,浙江永康人,本科,高级工程师,主要研究方向为机械设计及理论、工程机械。
 

 

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