COMPANY INTRODUCTION.
On June 30, 2021, the “Safety Technical Standard for Construction Socket type Panbuckle Steel Pipe Scaffolding” was released as an industry standard, numbered JGJ/T231-2021, and will be implemented from October 1, 2021. The original industry standard “Safety technical regulations for construction socket type buckle type steel pipe supports” (JGJ231-2010) is simultaneously abolished..
It is clear that the socket type buckle type steel pipe scaffold is divided into a support frame and a work frame according to its purpose; Delete material related requirements and clarify the source of material quality requirements; Added structural importance coefficient and adjustment coefficient for bearing capacity design value; Revised load values and load sub coefficients; Revised the formula for calculating the length of support frame poles; Revised the requirements for the arrangement and construction of diagonal bars for homework racks and support racks; Canceled all strong bars (numbering changed from JGJ to JGJ/T)..
1.0.1 In order to achieve advanced technology, economic rationality, safety and applicability in the design, installation, dismantling, use and management of socket type buckle type pipe scaffolding, this standard is formulated..
1.0.2 This standard is applicable to the design, installation, dismantling, use, and management of socket type buckle type steel pipe scaffolding in construction and municipal engineering..
The design, installation, dismantling, use, and management of 1.0.3 socket type buckle type steel pipe scaffolding should not only comply with this standard, but also comply with the provisions of the current national standards..
According to their usage, they can be divided into supporting scaffolding and working scaffolding. Scaffolding is a structural framework that can withstand corresponding loads and has operational safety and protection functions. The upright poles are connected by outer sleeves or inner sleeves, while the horizontal (horizontal) and diagonal poles are connected by rod end buckle joints and wedge-shaped pins..
Supported on the ground or structure, it can withstand various loads, has safety protection functions, and provides support and operating platforms for building construction. It is a plug-in type buckle type steel pipe support frame, including formwork support scaffolding for concrete construction and structural installation support frame, abbreviated as support frame..
The socket type buckle type steel pipe scaffold, abbreviated as the work frame, is supported on the ground, buildings, or attached to the engineering structure soil to provide a work platform and safety protection for construction. Not suitable for load-bearing support..
According to the outer diameter of the upright pole, scaffolding can be divided into standard type (B type) and heavy type (Z type). The components, materials, and production quality of scaffolding should comply with the current industry standard JG/T 503 for socket type buckle type steel pipe support components..
3.0.2 The pin connection between the rod end buckle joint and the connecting plate should not be pulled out after hammering and self-locking. When setting up the foot on the frame, it is advisable to use a hammer of no less than 0.5kg to strike the top surface of the pin at least twice until the pin is tight. After tightening, it should be struck again, and the sinking amount of the plug should not exceed 3mm..
3.0.3 After the locking pin is tightened, the curved surface of the buckle joint end should be in contact with the outer surface of the upright pole..
3.0.4 The design of scaffolding structures should adopt different safety levels based on the type of scaffolding, installation height, and load. The classification of scaffolding safety levels should comply with Table 3 0.4 regulation..
Note: The erection height and load of the supporting scaffold.
