Laminated plate-type sandwich insulation shear wall with tie bolts and installation method thereof

Abstract

A laminated plate-type sandwich insulation shear wall with tie bolts, including a prefabricated external wall, a sandwich insulation layer, a cast-in-place concrete layer, a prefabricated internal laminated wall board, and an external wall connector. Several bolts disposed between the external wall and the internal laminated wall board. Each tie bolt consists of cylinder head screw, gland, sleeve, and tie screw casing. During installation, the sandwich insulation wall with the bolts are installed in place in a suspended manner and is temporarily fixed, the tying and connection of reinforcing steel bars is completed, a formwork is supported, concrete is poured, the cylinder head screw is removed after the cast-in-place concrete solidifies and the strength of the cast-in-place concrete increases, and the bolt hole is filled with foamed polyurethane. The sandwich insulation wall solves the problem of mutual destruction of the external and internal walls due to the indoor and outdoor temperatures.

Description

BACKGROUND OF THE INVENTION1. Technical Field[0001]The invention belongs to the field of laminated plate-type sandwich insulation shear walls in prefabricated concrete construction, and particularly relates to a laminated plate-type sandwich insulation shear wall with tie bolts and an installation method thereof.2. Description of Related Art[0002]Laminated plate-type sandwich insulation shear walls on the current market are not provided with tie bolts separately, a prefabricated external wall is connected with a prefabricated internal laminated wall board through an external wall connector, and thus, the external wall connector is not only used for connecting an external wall with an internal wall, but also is used for connecting the prefabricated external wall with the prefabricated internal laminated wall board. Such laminated plate-type sandwich insulation shear walls mainly have the following problems: the stress requirement of the external wall connector of the laminated plate-...

AI Technical Summary

Benefits of technology

[0010]After the laminated plate-type sandwich insulation shear wall with tie bolts is installed in place in a suspended manner and is temporarily fixed, the tying and connection of reinforcing steel bars are completed, a formwork is supported, concrete is poured, the internal wall anchoring part of the external wall connector is embedded into the cast-in-place concrete layer, and the cast-in-place concrete layer formed after the concrete is poured is integrated with the prefabricated internal laminated wall board, so that an internal wall in a whole sandwich insulation shear wall system is formed; the cylinder head screw is removed after the cast-in-place concrete solidifies and the strength of the cast-in-place concrete increases, a hole of each tie bolt is filled with foamed polyurethane, then a round pit in the external wall of the prefabricated internal laminated wall board is filled with the concrete to be leveled, a measure for preventing surface cracking is taken, and in this way, the installation of a whole sandwich insulation shear wall is completed.

Problems solved by technology

Such laminated plate-type sandwich insulation shear walls mainly have the following problems: the stress requirement of the external wall connector of the laminated plate-type sandwich insulation shear wall is different from that of the tie bolts used for connecting the prefabricated external wall with the prefabricated internal laminated wall board, and particularly, the stress of the tie bolts should be much larger than that of the external wall connector.

While if the external wall connector is configured according to the stress requirement of the tie bolts, the cost will be increased, the external wall connector will apply a higher constraining force, which greatly exceeds the designed constraining force, to the external wall and then cannot deform anymore, and consequentially, mutual destruction of the external wall and the internal wall may be caused by the difference between indoor and outdoor temperatures.

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