油气管道斜拉索跨越设计.pdf

投产与运行 1000-8241 2015 ××-××××-05.5 文章编号： （ ） 油气管道斜拉索跨越设计 左雷彬　马红昕　铁明亮　杨威　张志广 中国石油天然气管道工程有限公司，河北廊坊065000 摘要：油气管道斜拉索跨越常用于峡谷地区的河流穿跨越工程中，为了解决中缅油气管道北盘江斜 拉索跨越工程风振稳定、清管振动、索力平衡以及桥塔刚度等问题，开展了斜拉索全桥和节段模型风 洞试验，并进行了有限元数值模拟分析。通过分步迭代获取了不等跨斜拉索结构的合理成桥索力， 并采取边跨配重和拉压支座结合的方式平衡索力；通过全桥模型和节段模型风洞试验，获得了结构 抗风需要的风振参数，并对跨越结构抗风稳定性进行了验证，同时基于走道板对抗风安全的影响， 选取了透风率高的走道板型号；通过综合比选，桥塔结构形式采用了钢管混凝土桥塔，3 根管道采取 了上下布置方案。由此，有效保证了结构抗风安全，并解决了不同工况下结构振动和索力平衡问题。 （图7，参10 ） 关键词：斜拉索跨越；风洞试验；数值模拟；清管振动；索力平衡；钢管混凝土 × ×× ××× 中图分类号：TE832 　　 　 文献标识码：A　 　　　doi ：10.6047/j .issn.1000-824 1.201 . . Design of cable-stayed aerial crossing for oil and gas pipeline ZUO Leibin, MA Hongxin, TIE Mingliang, YANG Wei, ZHANG Zhiguang China Petroleum Pipeline Engineering Corporation, Langfang, Hebei, 065000 Abstract: Cable-stayed aerial crossings of oil and gas pipelines are frequently used for crossover of rivers in canyon zones. To solve problems related to wind vibration stability, pigging vibration, cable tensile balancing and pipe bridge tower rigidity in Beipanjiang Cable-Stayed Aerial Crossing Project of Myanmar-China Oil Gas Pipeline, wind-tunnel test and finite- element numerical simulations are performed for the cable-stayed aerial crossing and specific sections. Through stepped iteration, proper tensile strengths of cables for cable-stayed aerial crossing with different spans are determined. Combination of counterbalance weight and support abutment is deployed to balance the tensile strength on cables. Through wind-tunnel