Precast concrete hollow wall structure and construction process

Abstract

The invention belongs to the technical field of assembled buildings, and in particular, designs a precast concrete hollow wall structure and a construction process. The precast concrete hollow wall structure comprises a wallboard I, a wallboard II, cavity limiting sleeves, and connection fixing devices, wherein the wallboard I and the wallboard II are arranged in parallel, and are correspondinglyprovided with multiple positioning holes; the cavity limiting sleeves are arranged between the corresponding positioning holes; and the connection fixing devices penetrate through the corresponding positioning holes on the wallboard I and the wallboard II and the cavity limiting sleeves to connect the wallboard I and the wallboard II as a whole. Wallboard thickness control rings are arranged in the positioning holes of the wallboard I and the wallboard II; and the wallboard I and the wallboard II are respectively cast with the wallboard thickness control rings inside as a whole. The wallboardson two sides are produced in parallel, so that the process is simple, and the working efficiency is greatly improved; the secondary maintenance problem is not needed, so that the energy consumption is reduced; and unnecessary distribution of ribs in a cavity is reduced, so that the production cost of products is reduced.

Description

technical field [0001] The invention belongs to the technical field of prefabricated buildings, and particularly designs a prefabricated concrete hollow wall structure and construction technology. Background technique [0002] With the rapid development of construction industrialization, the demand for concrete prefabricated components is increasing year by year. Among the prefabricated buildings, the shear wall structure accounts for the largest proportion and the technology is the most complicated. In the existing codes, shear walls are divided into two types: solid shear walls and hollow shear walls (also known as double-sided laminated shear walls and hollow walls). [0003] The hollow wall is also called the assembled integral double-sided laminated shear wall. It is composed of inner and outer leaf walls and cavities. It is prefabricated in the factory and delivered to the construction site. Fully connected to form the vertical force system of the building. Compared...

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Problems solved by technology

[0006] The disadvantages of using truss bars to flip and plug in are: complex equipment, huge investment; program review, must be formed successively, low production efficiency; secondary common maintenance, waste of energy; when flipped and inserted, the upper plate is easily sunken, making the hollow wall size Not allowed; if stones are encountered during insertion, it is easy to cause the two wallboards to crack; demoulding and lifting are difficult, such as setting lifting points, it can only be inserted, which is difficult to manufacture and unstable under force

[0008] Defects of using the welded steel mesh flip-insert type: the manufacturing process of the steel mesh is complicated, and the investment in equipment is large (the steel mesh of the two walls is welded together in advance); successive forming, secondary maintenance, waste of energy; forming accuracy is difficult to guarantee, the whole piece When the steel mesh is inserted, it is difficult to reach the predetermined buried depth due to sand and gravel blocking; when it is closed, the upper plate is severely sunken; the inner cavity cannot form a rough surface, and at least one of the two wall panels cannot have ribs on the side, because the inserted steel bar The mesh can only be smaller than the concrete range, that is, the mesh cannot exceed the range of the mold

In this way, in the application, the connection effect of the side wall panels is greatly reduced, that is, the force-bearing section is lost, and the construction cost must rise; hollow walls with insulation layers cannot be produced

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