Precast concrete inside heat insulation wall body

Abstract

The invention relates to a precast concrete inside heat insulation wall body, which can effectively separate a cold bridge from a thermal bridge and has a lower heat transfer coefficient. The precast concrete inside heat insulation wall body is characterized in that: the two ends of a plurality of spaced heat insulation material connecting pieces of which the two ends are extended into inside and outside thin-shell wall plates respectively pass through reinforcing steel bars of the inside and outside wall plates and / or are interspersed with anti-drawing short sticks to form a tensile structure; the tensile structure, a compression-resistant structure and a shearing-resistant structure are respectively pre-buried in the four corners of the wall body at least; and / or the periphery of the wall body has an overall frame structure. An overall box type structure is formed, which not only effectively reduces a cold / thermal bridge phenomenon, makes the heat insulation wall body have the lower heat transfer coefficient, reduces a wall body heat transfer coefficient within 0.4 W / m<2>.K, but also remarkably improves the overall structural strength of a hollow heat insulation wall body, improves the shearing resistance of a wall plate and the connection strength with a building structure, and has various mechanical properties which completely meet the requirements on the outside wall of a building. The connecting pieces adopt hollow structures; and metal connecting pieces can be arranged and fixed in holes and are used as for fixing objects on a wall surface and used as scaffold supporting points so as to increase connection points between the wall body and the building structure.

Description

technical field [0001] The present invention is a further improvement and perfection of the prefabricated concrete inner thermal insulation wall previously applied by the applicant, and in particular relates to a prefabricated concrete inner thermal insulation wall which can effectively cut off the cold and heat bridges and has a lower heat transfer coefficient. Background technique [0002] The series of prefabricated concrete prefabricated thermal insulation walls and slabs that the applicant applied for earlier, such as Chinese patents 200710023502.62, 200710132534.X, 200820033303.3, 200920038302.2, 200920046133.7, 200910264184.1, 201010115432.9, the inner and outer concrete interlayer thermal walls, 201010115432.9 (such as EPS boards), reinforced concrete connecting columns are used between the inner and outer wall panels to form an overall structural insulation wall panel. Not only the heat transfer coefficient of the wall is reduced to about 0.94 (the overall thickness...

AI Technical Summary

Problems solved by technology

However, in this structure of heat-insulating wall, the FRP connectors used only expand the heads (flanges) at both ends and put them into the concrete wall. The ability is relatively weak, and the connection parts are easy to be loosened and damaged by force, resulting in poor overall structure of the inner and outer wall panels, especially for large-scale wall structures.

Secondly, when the wall is formed and poured, each FRP connector is positioned by being inserted into the hole groove of the intermediate insulation EPS board. Fixed-point FRP connectors are difficult to form stable positioning, which brings troubles to pouring construction

Furthermore, the hollow insulation wall of this structure fails to fully consider the firm connection between the wall and the structure, which is also its shortcoming.

In addition, objectively, the single-sided wall of the hollow insulation wall is generally thin, usually only 4-6cm. When the wall needs to fix heavy objects, such as installing an air conditioner, holes need to be drilled through the inner and outer walls. In addition, it is difficult to maintain scaffolding on the wall. face fixed

Images