| CPC E04B 2/86 (2013.01) [E04C 2/288 (2013.01)] | 7 Claims |
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1. A composite wall, comprising a core concrete layer, an outer overhanging decorative layer cantilevered on a side of the core concrete layer for being located at an outer side of a building by precast outer cantilever rods, an inner overhanging formwork cantilevered on a side of the core concrete layer for being located at an inner side of the building by an integrated inner cantilever rod, a pre-perforated thermal insulation layer arranged between the core concrete layer and the outer overhanging decorative layer, and a reinforcement cage arranged between the core concrete layer and the inner overhanging formwork; wherein
a precast adhesive layer is filled between the outer overhanging decorative layer and the pre-perforated thermal insulation layer to bond the outer overhanging decorative layer and the pre-perforated thermal insulation layer, the precast adhesive layer is a cement mortar with a steel wire mesh or an external wall tile adhesive with a steel wire mesh, the precast adhesive layer is connected to the core concrete layer via the precast outer cantilever rods which each comprise an outer-cantilever-rod anti-pulling core having two ends respectively located in the core concrete layer and the precast adhesive layer, clamping pieces are detachably fixed to some of the outer-cantilever-rod anti-pulling cores to clamp the pre-perforated thermal insulation layer;
one of both ends of the integrated inner cantilever rod is configured to support an inner side of the inner overhanging formwork to form a cavity for pouring concrete during on-site assembly, and the other of the both ends of the integrated inner cantilever rod is embedded in the core concrete layer and detachably fixed to one of the outer-cantilever-rod anti-pulling cores, and the integrated inner cantilever rod is detachably fixed to the inner overhanging formwork; and
in a prefabricated state, the composite wall is horizontally arranged and is laminated upward layer by layer with the overhanging decorative layer as a bottommost layer, the core concrete layer flows down along reserved holes provided in the pre-perforated thermal insulation layer and is connected to the precast adhesive layer that is not finally solidified, each precast outer cantilever rod is formed of concrete in the corresponding reserved hole and the corresponding outer-cantilever-rod anti-pulling core;
the outer-cantilever-rod anti-pulling cores comprise a U-shaped core for connecting the reinforcement cage to the precast adhesive layer, a bolt core for connecting the integrated inner cantilever rod to the precast adhesive layer, and a tie core for connecting the core concrete layer to the precast adhesive layer, a lower end of each outer-cantilever-rod anti-pulling core is arrow-shaped, which facilitates passing through the reserved hole in the pre-perforated thermal insulation layer and provides an anti-pulling force, the U-shaped core is arranged on the reinforcement cage and has no clamping piece provided thereon, an upper end of the bolt core is screwed in a lower end of the integrated inner cantilever rod, and an upper end of the tie core is shaped to provide the anti-pulling force; and
each outer-cantilever-rod anti-pulling core, for which two clamping pieces are provided, is provided with a limit protrusion or a limit groove for preventing the two clamping pieces from sliding up and down, the reserved hole in the pre-perforated thermal insulation layer corresponding to the outer-cantilever-rod anti-pulling core is a rectangular hole; a lower clamping piece of the two clamping pieces provided on a same outer-cantilever-rod anti-pulling core is a rectangular plate with a size smaller than a size of the corresponding reserved hole to facilitate passing through the corresponding reserved hole, and has a length greater than a width of a cross section of the rectangular hole, so that the lower clamping piece is stuck below the pre-perforated thermal insulation layer by rotating 90 degrees after passing through the rectangular hole, and an upper clamping piece of the two clamping pieces has a size larger than the size of the corresponding reserved hole to prevent the upper clamping piece from falling.
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