As a metal part of the stone curtain wall, the stone dry pendant is a non exposed accessory between the wall and the stone slab, but it plays an important role in beautifying the architectural decoration with its strength and toughness. There are many kinds of dry hangers, and each kind of hanger has its own installation method. Dry hanging method is directly related to the quality of curtain wall

Structure, installation, cost and beauty. As for the hanging method of stone curtain wall, after the introduction of Bai from abroad in the mid-1980s, it has become increasingly innovative, from the pin type. Butterfly style has evolved into back hanging and sewing hanging style. The development and progress of dry hanging technology has completely broken away from the monopoly of foreign technology, and has become a national technology

The self-developed dry hanging patent technology has played a positive role in the reform and standardization of domestic dry hanging curtain wall decoration.

This paper analyzes the types, development, technical performance, methods and development prospects of stone curtain wall used for hanging parts, so that readers can have a more comprehensive and specific understanding of stone dry hanging parts, and provide a favorable reference for design and decoration material selection.

1、 Pin type

The pin pin and the base plate are connected through the opening at the edge of the plate. This method was introduced from abroad in the mid-1980s, which laid the foundation for the award of domestic dry hanging parts, and was also the reference of the industry standard (jc830-1998) of the Ministry of construction. This kind of pin is stressed, and the stress is concentrated at the pin hole.

According to the existing projects, there are cracks in some parts of the stone at the stress concentration, which costs labor, time and materials in the operation. Now it has been gradually replaced by other methods.

2、 Butterfly [commonly known as up and down. Two end flip)

The shape and method of this kind of pendant is a bit clumsy. In the process of forming, the strength of the hanger has been damaged (except for high quality stainless steel). Due to the thickness and curvature of up and down turning head in construction, the groove must be widened. The stone is easy to be damaged during installation, and the comprehensive cost is increased due to too much glue for processing groove width

It is a little backward in technology. It is not suitable to be widely used because of the unclear material requirements of the pendant.

3、 Joint type (i.e. "Ya", shaped part, commonly known as "welded joint")

This kind of pendant is commonly used in construction, and its installation is more advanced than the first two. Simple force transmission reduces the damage of stone, but the phenomenon of "annealing" will occur due to high temperature heating during welding. The strength of the hanger is greatly reduced. If the weld is not full, it will produce oxidation, rust and fall off. The firmness and safety are not guaranteed. Under the condition of cumulative bearing capacity

Due to wind force or ground spreading, the curtain wall will break and fall from the sky.