GB/T 26471-2023 in English
VALIDTower crane—Rules of installation, disassembly and climbing
- Issued on:2023-03-17
- Implemented on:2023-10-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$272.00
《GB/T 26471-2023塔式起重机 安装、拆卸与爬升规则》由TC227（全国起重机械标准化技术委员会）归口，TC227SC1（全国起重机械标准化技术委员会塔式起重机分会）执行，主管部门为中国机械工业联合会。
Introduction
GB/T 26471-2023 Standard Overview
GB/T 26471-2023 "Rules for the Installation, Disassembly and Climbing of Tower Cranes" was released in 2023, replacing the old standard GB/T 26471-2011. This standard specifies in detail the technical requirements and safety specifications for the installation, disassembly and climbing of tower cranes. It is applicable to the installation and disassembly of assembled top-slewing tower cranes, and other types of tower cranes can refer to it.
Background and Significance of Standard Formulation
With the development of the construction industry, tower cranes are being used more and more widely. In order to ensure their safety during installation, use and dismantling, relevant international and domestic institutions continue to update and improve relevant standards. GB/T 26471-2023 combines the latest technological developments and practical experience to further optimize the installation and disassembly process and safety requirements.
Comparative Analysis of Standard Frameworks
| Chapter Contents | Old Version (GB/T 26471-2011) | New Version (GB/T 26471-2023) |
|---|---|---|
| Terms and Definitions | Contains basic concepts, but not detailed enough. | New terms such as "internal climbing" and "external hanging" are added, and the technical requirements of each link are clarified. |
| Requirements for Installation and Removal Units and Personnel | Emphasis on qualifications and training, without involving specific implementation details. | Detailed the responsibilities of the person in charge of installation and removal, and added requirements for auxiliary equipment. |
| Safety distance and group tower operation | Basic safety distance is provided, and complex environments are not considered. | Safety distance requirements for overhead transmission lines of different voltage levels have been added, and safety regulations for group tower operations have been refined. |
Analysis of new technical points
Expansion of terms and definitions: New professional terms such as "inside climbing" and "outside hanging" have been added to clarify the technical requirements of these construction methods. For example, the inside climbing tower crane uses the building structure to climb, and has higher requirements for the outer wall.
Detailed responsibilities of installation and dismantling personnel: The person in charge of installation and dismantling must have more than 5 years of experience and participate in the formulation of special plans. The installation and dismantling supervisor must supervise the entire process to ensure the performance and safety of auxiliary equipment.
Improved safety and technical requirements: The new version of the standard emphasizes the inspection of the boom tie rod and the balancing device to ensure their stability under different working conditions. At the same time, the requirements for the verticality of the tower crane axis during the climbing process are increased to ensure structural safety.
Implementation suggestions and precautions
- Strictly abide by the special plan: Before installation and disassembly, a detailed safety and technical briefing must be formulated based on the actual situation on site and signed and confirmed by all parties.
- Strengthen personnel training: Installers and related personnel need to receive professional training regularly to ensure familiarity with the application of new standards and new technologies.
- Improve emergency plans: Formulate specific emergency measures and conduct simulation drills for possible power outages, equipment failures, etc.
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