Recently，The 100-meter domestic large tow carbon fiber cable jointly developed by Liugong Owim Company and China Construction Eighth Engineering Bureau Co., Ltd. has been successfully applied to the sand and gravel yard with air film structure of Changshen Expressway Project.。This is the first time in the industry that carbon fiber cables have been applied to the cable net system of air-supported membrane structures.，It is also the longest carbon fiber cable used in the field of civil engineering in China so far.。

Air film structure building is a kind of building which uses special building membrane material as shell.，The main body of the building is supported by air pressure，A building structure system that relies on external cable constraints.，At present, it has been widely used in various stadiums, warehouses and other buildings.。

The air film structure of Changshen Expressway Project is 105 meters long.，It is 72 meters wide，27 meters high。The displacement of the original air film structure under the wind load is larger.，On the basis of the original structure, the project team added two lines along the length direction of the air film.CFRPPrestressed cable，The lateral stiffness of the air film structure and the reliability of dealing with typhoon weather are enhanced.。At the same time，CFRPThe cable is arranged at the outer side of the cable net of the original air film structure.，Under the action of air pressure inside the air film, it mainly bears tension.。The total length of single cable is 92 meters.，It weighs about 65kg，The weight is reduced by about 80% compared with the common steel cables%，The construction difficulty can be effectively reduced.，Saving the use of large construction hoisting machinery，Realize efficient installation under normal operation of the material yard。

Carbon fiber as a national strategic high performance fiber composite material，Has light weight and high strength、Excellent durability and fatigue resistance，In the past, it was mainly used in the aerospace field.。The successful implementation of the Changshen Expressway Project has further promoted the application of new carbon fiber materials of Liugong Owim Company in the field of civil engineering.。In the future，Liugong Owim will continue to accelerate the pace of technological innovation.，Maintain the leading position of core technology，Continuously achieve new breakthroughs in the field of domestic carbon fiber applications，Build industry benchmarking project。