深圳外环高速公路桥梁与西气东输二线工程近距离并行安全影响分析  

Safety Impact of the Bridge of Shenzhen Outer Ring Expressway and the Second Line of West-to-East Gas Transmission Project

作　　者：蒋宗岑[1] 黄启刚 JIANG Zongcen;HUANG Qigang(CCCC First Highway Consultants Co.,LTD,Xi'an 710075,China)

机构地区：[1]中交第一公路勘察设计研究院有限公司

出　　处：《灾害学》2019年第A01期150-153,共4页Journal of Catastrophology

摘　　要：深圳市土地资源宝贵,根据相关规划西气东输二线天然气管道与深圳外环高速公路大量路段共用同一走廊,且有5.2km桥梁段存在与西二线近距离并行、交叉等问题。由于西二线为超高压输气管道且先于外环高速开工建设,外环高速公路开工建设时西二线已正式投入运营。因此,外环高速桥梁段施工时大型机械的振动将直接影响运营燃气管线的安全。此外,高速公路通车运营时期的运营车辆都可能对近距离并行和穿越高速公路的燃气管线形成安全威胁。为更好的指导项目建设,该文对近距并行时的相关安全影响因素进行了分析。Shenzhen's land resources are valuable.According to the relevant planning,the natural gas pipeline of the second line of West-to-East Gas Pipeline shares the same corridor with a large number of sections of Shenzhen Outer Ring Expressway,and the 5.2 km bridge section has the problems of close parallelism and intersection with the second line of West Gas Pipeline.As the second West Line is an ultra-high pressure gas pipeline and started construction earlier than the outer ring highway,the second West Line was put into operation when the outer ring highway started construction.Therefore,the vibration of large machinery will directly affect the safety of gas pipeline operation during the construction of outer ring high-speed bridge section.In addition,the operating vehicles during the operation period of Expressway may pose a security threat to the gas pipelines running in close parallel and crossing the expressway.In order to better guide the construction of the project,this paper analyzed the related security factors in close-range parallel.

关 键 词：桩基施工 振动 燃气管道 数值计算 震动速率 安全影响分析 

分 类 号：U416.1[交通运输工程—道路与铁道工程] X43[环境科学与工程—灾害防治]