The first composite reinforced concrete precast pipe gallery project in China has been successfully applied, and a new breakthrough has been made in the composite reinforcement of China Railway Construction Heavy Industry.

Fengxi New Town is one of the five new towns in Xixian New District.，It is the comprehensive service sub-center and strategic emerging industrial base of Xi'an's international metropolis in the future.，Aoxiang 3rd Road in this area、Ao Xiang Si Lu、Construction of underground power pipe galleries on Kunpeng Road。

In the production process of Fengxi New Town Prefabricated Pipe Gallery Project, the composite reinforcement of Railway Construction Heavy Industry Electrical Materials Company was innovatively used as the main reinforcement instead of the reinforcement.，Not only the durability of the concrete structure is improved,、Reduced weight，Meanwhile, the investment of material cost is reduced.，Good application effect has been obtained.。

Finished product of power pipe gallery with composite reinforcement as main stressed reinforcement

The use of composite bars instead of steel bars has been used in temporary structures and non-stressed structural concrete members for many years.，Fengxi New Town Power Pipe Gallery Project is the first project in the domestic power field to apply composite reinforcement as the main reinforcement in a large number of large volume concrete precast structures.，China Railway Construction Heavy Industry Electric Materials Co., Ltd. participated in the application research of the project in the aspects of material selection and acceptance and application method research.。

Finished products of prefabricated power pipe gallery in Fengxi New City

The tensile strength of the composite bar of Railway Construction Heavy Industry Electrical Materials Company can reach 600-1500MPa，It is 2 of ordinary steel bar.-3x；Density 1.9-2.1g/cm3，Only about a quarter of the steel；Due to the insulation of the composite rib、Corrosion-resistant properties，It does not have the problem of corrosion，And that problem of electrochemical corrosion and the like are avoided.。

Finished product after binding of composite bar

Railway Construction Heavy Industry Electrical Materials Company in Rail Transit、Marine Engineering、Road works、In the field of construction engineering, the popularization and application of composite reinforcement products have been realized in combination with construction methods and project requirements.。The successful application of this project has played a good demonstration significance for the use of composite reinforcement instead of steel reinforcement in a wider range.，It also opens up ideas for the application of new materials in the engineering industry.。

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