大跨径悬索管道桥三跨连续式猫道设计与分析

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英文篇名：Design and analysis of three-span continuous catwalk for long-span suspension pipeline bridge 作者：陈晓晖 ; 王荣玖 ; 那娜 ; 王春波 英文作者：CHEN Xiaohui;WANG Rongjiu;NA Na;WANG Chunbo;China Petroleum Pipeline Engineering Co.,Ltd.;China Petroleum Pipeline No.1 Construction Company; 关键词：悬索管道桥 ; 猫道 ; 设计 ; 受力验算 英文关键词：suspension pipeline bridge;;catwalk;;design;;force checking calculation 中文刊名：SYGJ 英文刊名：Petroleum Engineering Construction 机构：中国石油管道局工程有限公司设计分公司;中国石油管道局工程有限公司第一工程分公司; 出版日期：2018-10-17 出版单位：石油工程建设 年：2018 期：v.44;No.274 语种：中文; 页：SYGJ201805013 页数：5 CN：05 ISSN：12-1093/TE 分类号：52-56

摘要

猫道作为悬索管道桥上部结构的空中作业通道,是全部安装工程最重要的临时设施,架设周期和使用时间比较长,其架设前的设计与分析工作对结构安全尤为重要。介绍了猫道结构设计原则和设计方案。以某悬索管道桥的猫道设计为例进行相关受力验算与分析,结果表明:该桥承重索在不同使用阶段的安全系数均大于3,在强度上是安全的;由于悬索管道桥所处的特殊地形,设置抗风索是十分必要的;风速在4级以上时,出于安全考虑,应停止施工索的吊装作业;猫道承重索两端应留有一定的调节余量以满足主缆在不同状态下的线形要求;在该承重索设计方案下,桁架宜采用兜吊方式进行发送与安装。
        Catwalk as the aerial operation pathway for top structure of suspension pipeline bridge is most important temporary installation in the whole installation engineering, having longer set-up period and utilization time, its design and analysis work is very important to structure safety. The design philosophy and scheme of catwalk is introduced in this paper. Taking the catwalk design of a certain suspension pipeline bridge for example,the related structural force checking calculation and analysis are conducted. The results show that the safety coefficients of the load-bearing cables of the suspension pipeline bridge are greater than 3,within the safe range; setting up the wind cables is necessary due to the particular landform of the bridge location; the hoisting operation of the construction cables should be stopped for security while the wind velocity scale is over 4;certain adjustment allowance of the two ends of load-bearing cable is needed to satisfy the main cable line form in different cases;the sending and installing of trusses uses hoisting method.

引文

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