China's transportation industry "extrusion anchor wire strand" standard introduced

At the expert review meeting for the review of drafts for steel strands in the industry, China's transportation industry standard, “Steel Strands Full Bunch Extruded Cables”, was organized under the supervision of Liugong Group Liuwei Machinery Co., Ltd. and the Sichuan Provincial Department of Transportation Highway Planning. The industry standard for the transportation industry, "Steel Strand Full Bunch Extruded Cable" (name of the expert review meeting was changed to: extrusion anchored steel strand cable), was formally approved by the Survey and Design Institute.

Experts from 10 departments, including the Department of Science and Technology, Design and Research Institute, and Engineering Construction Company of the Ministry of Transport, rigorously and scientifically, and with rich practical experience reviewed the standard review articles one by one. Some of the standards were reviewed. The clauses were more reasonably revised and the review conclusion was finally given: “This standard is the in-depth investigation and study of the compiling group, and extensively collects relevant standards and data on the requirements of foreign extrusion anchored steel strand cables, combined with China’s extruded anchor strands. The actual conditions of production and use of the cable are based on extensive consultation, and the standards stipulate the structure and type, technical requirements, test methods, inspection rules, signs, packaging, transportation and storage of the extruded anchor steel cable. It is suitable for cable-stayed bridge cables and arch bridge cranes, with clear technical requirements, proper methods and strong operability.The release of standards will standardize the production and inspection of extruded anchor cable strand cables, which is convenient for cable replacement and improvement. Anti-corrosion performance and reliability, guaranteeing bridge safety have broad application prospects."

In recent years, China has built a large number of cable-stayed bridges and suspension bridges. Cables of cable-stayed bridges and slings (suspension cables) of suspension bridges are the main force transmission components. Their own safety and durability have a great influence on the overall performance of the bridges. It has become a long-standing industry department and engineering and technical personnel. Concerns and urgent issues to be solved.

Liu Gong, a leading company in the prestressed industry in China that participated in the preparation of national industry standards, once again received heavy responsibilities in February 2011, and immediately set up the "Standard for composing strands of steel strands" to set up the standard. Drafting of standards. During the preparation of the standard, Liuzhou Oweim used the actual conditions of the production and use of steel strand compression strands in China as the main basis for the compilation, analysis, and study of the use of strand bundles in domestic and foreign steel strands. Situation, study the development and changes of some key technical indicators, and summarize the experience accumulated by the manufacturer over the years in the production, supply, research and development, service of steel strand extrusion ropes, and obtained in the technical service and technical exchange of users. User information, to understand the domestic bridge sector and design institutes on the strand bundle extruded cable requirements and concerns. Active reference, adoption of foreign advanced standards, and full consideration of the bridge construction and building structure in China in the future to the strand bundle extrusion cable requirements and trends, improve the standard of adaptability and other preparation.

Experts at the meeting said that the official release of this standard will not only meet the needs of the development of the industry, but also meet the needs of the design organization's reasonable reference and application unit as the acceptance basis of the product, and regulate the production and manufacture of extruded anchor steel strand cable products in China. The quality control to ensure the quality of the project and promote the healthy development of China's bridge technology has a positive effect.