管道悬索跨越连续式猫道承重索下料长度计算  

Fabrication Length Calculation of Continuous Catwalk Bearing Cable of Pipeline Suspension Bridge

作　　者：铁明亮[1] 张勤 郭君[1] 

机构地区：[1]中国石油天然气管道工程有限公司,河北廊坊065000 [2]中国市政工程中南设计研究总院有限公司,湖北武汉430010

出　　处：《石油工程建设》2015年第6期44-49,共6页Petroleum Engineering Construction

摘　　要：为计算连续式猫道承重索下料长度以指导施工,以某管道悬索跨越的猫道为例,基于抛物线理论,推导了猫道承重索的无应力长度计算公式和索长温度修正公式,得出了承重索施工下料长度的计算公式。再采用增量无应力长度方法,对施工索进行强度验算与安全系数分析,并与有限元计算结果比较。猫道施工实践表明,抛物线理论和增量无应力长度计算方法用于连续式猫道承重索的索长下料计算和静力验算时,计算便捷,结果可靠,能满足施工要求,也表明该连续式猫道施工经验可用于同类大跨度悬索管道跨越工程施工。In order to guide the construction of the continuous catwalk bearing cable of a pipeline suspension bridge, this paper derives the non-stress length calculation formula of continuous catwalk bearing cable on the basis of parabola theory, together with the temperature correction. Then, based on the incremental non-stress length method, the static strength and safety factor is checked by comparing with the results from Midas FEA software. Conclusively, it is convenient, fast and reliable to apply the parabola theory and incremental non-stress length method in the continuous catwalk bearing cable calculation, and the construction experi- ence can be used in similar pipeline large span suspension projects.

关 键 词：连续式猫道 索结构 下料长度计算 无应力长度增量法 有限元分析 

分 类 号：TE973[石油与天然气工程—石油机械设备]