Background
With the continuous development of the modern building industry, the prefabricated concrete technology becomes one of the main directions of new technology development in the field of house construction, the defects of low production efficiency, heavy environmental pollution, large economic waste and the like existing in the concrete cast-in-place technology are overcome, and compared with the traditional building mode, the prefabricated concrete building technology has incomparable advantages: the prefabricated concrete has the advantages that the factory production of building parts is adopted, only standardized installation mode is carried out on site, the construction period can be greatly shortened, the labor amount and the working strength of the site are reduced, the cross operation is obviously reduced, the potential safety hazard is reduced, the prefabricated concrete has the advantages of high construction speed, construction environment improvement, energy conservation, environmental protection, engineering quality improvement and the like, and the prefabricated concrete is rapidly popularized and applied.
Prefabricated assembled concrete wall panel nodal connection structure among the prior art mainly is through reserving the reinforcing bar between precast concrete wall and board, and at the on-the-spot installation location and carry out reinforcement, pour the concrete behind the formwork, this kind of connection technique exists: the method has the defects of inaccurate installation and positioning, high adjusting difficulty, difficult steel bar connection, raised cost due to the fact that concrete is poured in the vertical template, prolonged construction period, low implementation efficiency and the like.
Disclosure of Invention
The utility model provides a prefabricated assembled concrete wall and board node connection structure, the utility model consists of a prefabricated concrete slab, a pre-buried screw rod in the concrete slab, the prefabricated concrete wall, a pre-buried connecting piece on the upper part of the concrete wall, a perforated steel plate and a nut, the concrete slab with the pre-buried screw rod is divided into a left side form and a right side form, the prefabricated concrete slab is a special-shaped slab, the end surfaces of the left and right slabs and the pre-buried connecting piece on the upper part of the concrete wall are matched to form a section of variable cross-section structure, the screw rod is pre-buried in the variable cross-section of the concrete special-shaped slab, the length of the pre-buried screw rod is more than the width of the prefabricated concrete slab, the pre-buried screw rod extends out of the slab end for a certain length at the two side surfaces of the prefabricated concrete slab and is matched and connected with the pre-buried connecting piece on the upper part of the concrete wall; the cross section of the connecting piece pre-buried on the concrete wall is of a rectangular square tubular structure, clamping grooves are symmetrically formed in the left side and the right side of the connecting piece, pre-buried screw rods of variable cross-section sections of the precast concrete plates enter the clamping grooves in the side faces of the pre-buried connecting piece on the concrete wall, the steel plate with the holes is connected to the screw rods of the concrete plates on the left side and the right side, and nuts are installed and screwed up for fixation.
Detailed Description
A prefabricated assembled concrete wall and plate node connecting structure is shown in figure 1 and comprises a prefabricated concrete plate 1, a screw rod 2 pre-embedded in the concrete plate, a prefabricated concrete wall 3, a connecting piece 4 pre-embedded at the upper part of the concrete wall, a steel plate 5 with a hole and a nut 6; the concrete slab with the embedded screw rods is divided into a left side and a right side, the prefabricated concrete slab 1 is a special-shaped slab, the matching part of the end surfaces of the left and right slabs and the connecting piece 4 embedded in the upper part of the concrete wall is of a section of variable cross-section structure, the screw rods 2 are embedded in the variable cross-section sections, the length of the embedded screw rods 2 is greater than the width of the prefabricated concrete slab, and the embedded screw rods 2 extend out of the slab ends on the two side surfaces of the prefabricated concrete slab for a certain length and are matched and connected with the embedded connecting piece on the upper part of the concrete wall; the cross section of the connecting piece 4 pre-embedded on the concrete wall is of a rectangular square tubular structure, clamping grooves are symmetrically formed in the left side and the right side of the connecting piece, pre-embedded screws 2 of variable cross section sections of the precast concrete plates 1 are clamped into bayonets in the side faces of the connecting piece 4 pre-embedded on the concrete wall, the steel plates 5 with holes are connected to the screws 2 of the precast concrete plates on the left side and the right side, and nuts 6 are installed and screwed up for fixing, as shown in fig. 2.
The node connecting structure of the prefabricated concrete wall and the prefabricated concrete plate is implemented according to the following steps:
the method comprises the following steps: prefabricating a concrete slab 1, binding a reinforcement cage of the concrete slab, embedding a screw rod, supporting a special-shaped template, and pouring concrete to finish prefabricating the special-shaped concrete slabs on the left side and the right side;
prefabricating the concrete wall, binding a reinforcement cage of the concrete wall, welding and fixing the embedded connecting piece and the reinforcement, erecting a formwork and pouring concrete to finish the prefabrication of the assembled concrete wall;
step three: positioning and fixing the precast concrete wall 3, hoisting the concrete special-shaped plates on the left side and the right side to enable the precast concrete wall to horizontally move, respectively clamping the screw rods 2 pre-embedded in the left concrete plate and the right concrete plate into corresponding bayonet positions of the pre-embedded connecting pieces 4 of the concrete wall, connecting the steel plate 5 with the holes in a matched manner with the screw rods 2, and screwing and fixing the steel plate with the holes by nuts 6.
After the connection, installation and fixation of all the prefabricated concrete walls and the prefabricated assembled concrete plates are completed, the uneven parts are trowelled by slurry, and the joint connection of the prefabricated assembled concrete walls and the prefabricated assembled concrete plates is completed.
The invention has the beneficial effects that:
1) the utility model provides a prefabricated assembled concrete wall and board node connection structure has construction convenience, and the use of the 'dry connection' mode of on-site assembly construction for prefabricated concrete walls and boards can greatly improve the construction efficiency;
2) the embedded connecting piece and the screw rod are added, so that the rapid construction of the nodes of the prefabricated concrete wall and the prefabricated concrete plate is realized, and the construction cost can be greatly reduced;
3) if the building is damaged and needs to be replaced, the replacement parts are convenient to disassemble, so that the service life of the building is prolonged;
4) the prefabricated concrete wall and plate is very suitable for industrial mass production, can greatly reduce the cost, is convenient to install and transport, reduces the pollution of construction waste to the environment, and has excellent economic benefit and social benefit.
The above preferred embodiments are only used to illustrate the technical solution of the present invention, not to limit the protection scope of the present invention, and all modifications, equivalent replacements, improvements, etc. which do not depart from the essence of the technical solution of the present invention and the protection scope all belong to the protection scope of the present invention.