Method for positioning inserts in a reinforced concrete structure

Abstract

The claimed technical solution is intended for use in building, in the erection of reinforced concrete structures of particularly complex and unique industrial and civil buildings, structures and edifices in which various elements are fastened to the walls, including but not limited to operations performed to erect such structures without calculating for future changes in the position of inserts. The technical solution consists in a method for positioning inserts in a reinforced concrete structure which includes arranging anchor portions of the inserts in a reinforced concrete structure during the fabrication thereof, said anchor portions being in the form of base plates with threaded holes for receiving removable anchor rods, wherein, during the fabrication of the reinforced concrete structure, base plates with threaded holes are arranged incrementally, the anchor portions of the inserts are coupled to a load-bearing reinforcement cage of the reinforced concrete structure, and removable anchor rods with caps on the free ends thereof, or recoverable insert members made of plastic, reinforced plastic or treated wood are installed in the threaded holes of the base plates, thus forming in the fully fabricated reinforced concrete structure an anchoring field having a plurality of attachment points which are ready for the installation of corresponding working plates once the attachment points are uncovered and, where necessary, plastic insert members are replaced by anchor rods.

Description

[0001] METHOD OF LOCATING EMBEDDED PARTS IN A REINFORCED CONCRETE STRUCTURE

[0002] Field of technology

[0003] The claimed technical solution is intended for use in construction, in the erection of industrial, civil, particularly complex and unique buildings, structures and facilities in which various elements are attached to the surface of walls, columns, ceilings, floors, etc., in particular using embedded parts.

[0004] State of the art

[0005] It is well known that during construction, it is necessary to use a fastener that establishes a reliable connection between the parts of a building structure. This fastener is called an embedded part (hereinafter EM). Modern EM installation technologies involve installing them and concreting them into a reinforcement cage in an assembled form, which does not allow for adjustment of the EM working surface after the concrete has hardened.

[0006] When constructing unique buildings, structures, and facilities, increased demands are placed on the precision of the foundation slab installation. Currently, errors during installation, concrete pouring, and changes to design documentation after the construction work has become more frequent, leading to the impossibility of using the foundation slab or the need for adjustments.

[0007] When changing the purpose or function of premises, as a rule, the use of existing ZD is impossible, and the installation of new ones is associated with significant financial, time and labor costs, since it requires the development of a separate technical solution, with calculations of the bearing capacity and measures required for the installation of new ZD.

[0008] Making new holes for installing the anchor portion of the RD is often associated with damage to the working rods of the reinforcement cage, which, given increased requirements for load-bearing capacity, seismic resistance, etc., may require additional reinforcement measures and recalculation of the load-bearing capacity of the entire building, which also does not exclude the possibility of an error during installation of the new RD. The installed new RD will typically protrude beyond the surface of walls, columns, ceilings, etc. In order to install the RD in a single plane, it will be necessary to partially dismantle the protective layer of reinforcement. A connecting device designed as an embedded part (RU2040648C1 dated 24.06.1993, IPC class E04B 1 / 41), consisting of a metal plate and a bundle of reinforcement elements connected to it by means of an overlap welded joint, wherein all the reinforcement elements in such a bundle are bent at different angles, while the minimum bending angle is taken to be no less than 10°, the maximum no more than 80°, and the arithmetic mean value of the bending angle for the entire bundle is taken to be equal to the value of the design bending angle. A possible embodiment of the proposed embedded part is the connection of all ends of the bent sections of the reinforcement elements of the bundle with a transverse tie made of reinforcement, the diameter of which is 2 - 3 times smaller than the diameter of the reinforcement in the bundle (hereinafter - device No. 1).

[0009] The disadvantage is the impossibility of dismantling device No. 1 as a whole or only its working surface without significant destruction of the surfaces of walls, columns, ceilings, etc., and, consequently, the high cost of installation in another location, since device No. 1 is not collapsible.

[0010] A connecting device is known, implemented in the form of an anchor, intended for transmitting large shear forces, which allows the use of structural elements (RU2753333 C1 from 04.05.2018, IPC class E04B 1 / 41) having a thin structure. The anchor, transmitting a transverse force, is used to transmit shear forces acting transversely to the longitudinal direction of the structural element, into structural elements made primarily of concrete. The anchor comprises: a connecting section for introducing at least one shear force into the anchor, transmitting a transverse force, connected to at least one load application section, which is configured to contact the structural element, for transmitting at least one component of the force, oriented in the direction of the shear force to be transmitted, to the structural element.In order to transmit large shear forces into a structural element having a thin structure, the connecting section is additionally located at a distance in the direction of the shear force to be transmitted from the load application section (hereinafter referred to as device No. 2).

[0011] The disadvantage of device #2 is that it is not disassemblable, and its design does not allow for post-installation installation of the anchor portion. Furthermore, it is impossible to cover the surface with finishing coatings, and there are no navigation plugs. A known embedded part (SU1057643A1 from 02.04.1982, class MPKE04B 1 / 38, E04B 1 / 41) includes a strip anchor with wave-shaped protrusions in the form of a helical surface. In order to reduce metal consumption and improve anchorage reliability, the wave-shaped protrusions are made half the width of the strip, and the direction of the helical surface is made alternating - right and left alternately at half-pitch, with a decreasing pitch towards the end of the strip, while the longitudinal axis of the strip remains rectilinear and constant. Moreover, the pitch of the screw surface is 1.5-2.5 times the width of the strip, and the strip itself is made to taper towards the end (hereinafter referred to as device No. 3).

[0012] The disadvantage is that Device No. 3 is not disassemblable, and its design does not allow for post-installation installation of the anchor portion. Furthermore, there is no option to cover the surface with finishing coatings, there are no navigation plugs, and the spiral design makes it difficult to assemble multiple Device No. 3 units into a single package and position the package within the reinforcement cage.

[0013] A built-in part is known (SU1805179A1 from 13.11.1990, IPC class E04B 1 / 41), containing a plate with anchor elements bent from its plane in the form of strips formed from the body of the plate and placed in its corner parts, where, in order to improve anchoring, the strips are placed inside the field of the plate and are made in the form of a T-shaped part with a shelf facing outward, wherein the ratio of the shelf height to the length of the anchor element is within the range of 1 / 3 - 1 / 4, and the ratio of the width of the wall of the anchor element to the width. Its flange is within 1 / 2-1 / 3 of its thickness, the anchor elements at the flange-wall junction and at the base of the bend have fillets, and the smallest distance from the plate edge to the nearest side wall face of the anchor element and the smallest distance from the plate edge to the base of the bend are the same and are within 10-15 plate thicknesses (hereinafter referred to as device No. 4). This technical solution was adopted as a prototype.

[0014] The disadvantage is the impossibility of dismantling device No. 4 as a whole or only its working surface without significant destruction of the surfaces of walls, columns, ceilings, etc., and, consequently, the high cost of installation in another location, since device No. 4 is not collapsible.

[0015] The objective of the technical solution is to develop a composite embedded part (CEM) and a method for locating it in reinforced concrete structures, ensuring easier assembly / dismantling of the structures compared to the prototype, due to the detachable design of the embedded part. Disclosure of the essence of the technical solution

[0016] The technical solution to the above problem is a method for arranging embedded parts in a reinforced concrete structure, including the placement during the manufacture of the reinforced concrete structure of their anchor parts in the form of thrust plates with threaded holes for accommodating removable anchor rods, characterized in that during the manufacture of the reinforced concrete structure, thrust plates with threaded holes in them are placed step by step, the anchor parts of the embedded parts are connected to the supporting reinforcement frame of the reinforced concrete structure, removable anchor rods are installed in the threaded holes of the thrust plate for securing the working plates, on the free ends of which plugs are installed, or removable inserts made of plastic, metal-plastic or antiseptic wood are installed in the threaded holes of the thrust plates, forming upon completion of the manufacture of the reinforced concrete structure an anchor field with a plurality of attachment points, ready after their de-preservation and, if necessary,- replacing plastic inserts with anchor rods, and installing the corresponding working plates. This technical solution allows the SZD to be used as an optimal tool for constructing anchor fields.

[0017] A possible technical solution involves the anchor rod being a cylindrical rod with a threaded end for attachment to the thrust plate, primarily made of metal, designed to transfer the load from the working plate to the thrust plate. This technical solution would eliminate the need to alter the mounting pattern used for the classic ZD design, but it does allow the use of rods of varying diameters in the same mounting location.

[0018] A possible technical solution is one in which the embedded part's working surface is a plate with holes for anchor rods, primarily made of metal, designed for fastening. This technical solution eliminates the need to modify the fastening scheme provided for the traditional ZD design. However, it also allows for multiple uses of the working surface, allowing for the fastening position on the anchor field to be adjusted to a convenient location.

[0019] A possible technical solution involves replacing the anchor rod with an insert, preferably made of plastic, which can be removed from the structure during the building, structure, or facility's operational life. This technical solution will reduce the cost of installing the anchor field by reducing the cost of materials.

[0020] A possible technical solution involves covering the end of the insert located near the surface of the structure with an information and navigation plug (hereinafter referred to as INP), which contains information on the key parameters of the pullout load capacity, the depth of the thrust plate, the location of adjacent anchor points, the installation pitch and their position within the structure, and the insert material. This technical solution will reduce the amount of dismantling work, the cost, and labor required to de-preserve the anchor points of the SZD, and allow for the installation of the SZD anchor point at a new location in a short time.

[0021] A possible technical solution involves welding the anchor rod to the thrust plate, and protecting the end of the anchor rod from corrosion with a plastic cap-like plug. This cap-like plug is then positioned within the wall, column, floor, etc., structure until it is concreted. This technical solution eliminates the need to modify the traditional ZD fastening system and, compared to the traditional design, is less labor-intensive, while still allowing the structural surface to be finished with capped anchor rod ends after the formwork is removed.

[0022] The technical solution to the above problem—namely, the placement of embedded parts in reinforced concrete or concrete structures—is achieved through the use of anchor parts, which are installed at a spacing comparable to the spacing of the working bars of the reinforcement cage. As a result, upon completion of concreting, the finished wall, column, floor, etc., has multiple anchor attachment points (anchor field) connected to the supporting reinforcement cage, ready for installation of either the work surface or the direct mounting of equipment, products, or fixtures. This technical solution will avoid design or installation errors, reduce the accuracy requirements for work surface installation, facilitate installation, reduce costs and labor, and enhance the functionality of walls, columns, floors, floors, etc.

[0023] Brief list of drawings

[0024] We further note that the figures attached in Figs. 1-12 show the most preferred embodiment of the technical solution and cannot be considered as a limitation of the content of the technical solution, which also includes other embodiments.

[0025] Fig. 1 shows a general axonometric view of the assembled SZD. A version with welded square Nelson-type anchor plates.

[0026] Fig. 2 shows a general axonometric view of the assembled SZD. A version with round Nelson-type anchor plates screwed onto the threads.

[0027] Note:

[0028] A. The Nelson stop in the rod can be replaced by a rod with a bent end installed in the concrete body.

[0029] B. The thrust plates can be combined into a single element that combines several anchors.

[0030] Fig. 3 shows the anchor portion of the SZD with rods for a threaded (mechanical) connection using couplings. In the welding version, the rod may be unthreaded.

[0031] Fig. 4 - shows the SZD with the plugs removed, where a "threaded rod" fastener is screwed into the thread. For a welded connection.

[0032] Fig. 5 - shows the SZD with the plugs removed, where a “stud” fastener for a threaded connection is screwed into the thread.

[0033] Fig. 6 - shows the welded joint with the working surface installed (the concrete is shown transparent for clarity).

[0034] Fig. 7 shows the SZD with an installed working surface intended for a threaded connection (nut) (the concrete is shown transparent for clarity).

[0035] Fig. 8 - shows the SZD with an installed working surface intended for a threaded connection made in the form of a bolt.

[0036] Fig. 9 - shows the finished surface of a concrete or reinforced concrete wall, column, ceiling, etc. with a “recess” after dismantling the formwork and removing the template.

[0037] Fig. 10 - shows a variant of installing a ground-supporting device from the edge of the “anchor field”; a variant with threads (the concrete is shown transparent for clarity).

[0038] Fig. 11 - shows a variant of installing the SZD in the center of the “anchor field” - a variant with threads (the concrete is shown transparent for clarity).

[0039] Fig. 12 - version of the INZ.

[0040] In all of the figures 1 - 12 the following positions are shown: pos. 1 - thrust plate of the anchor part of the "Nelson thrust" type, made of metal. pos. 2 - reinforcing bar (smooth, with a periodic profile or with a forged thread on the end), which is a factory-made product made of metal. pos. 3 - composite crimp / thread coupling, which is a factory-made product made of metal. pos. 4 - thread protection plug made of PVC, rubber or other material. pos. 5 - rod with a thread on one side and smooth on the side protruding from the wall, column, ceiling, etc., which is a factory-made product made of metal. pos. 6 - wall, column, ceiling, etc., made of concrete or reinforced concrete. pos. 7 - a stud, which is a factory-made product with a continuous thread, made of metal. pos.8 - a working surface with through, countersunk holes for welding, is a plate with through countersunk holes for fastening the anchor parts of the weld metal, made of metal, and in which the countersink is used for surfacing the weld metal. pos. 9 - a working surface with through holes for fastening on a thread, is a plate with through holes for fastening the anchor parts of the weld metal. pos. 10 - a washer, which is a factory-made product made of metal. pos. 11 - a nut, which is a factory-made product made of metal. pos. 12 - a lock nut, which is a factory-made product made of metal, pos. 13 - a bolt, which is a factory-made product made of metal. pos. 14 - an INZ sector with the designation of the depth of the thrust plate of the weld metal in the structure of a wall, column, ceiling, etc. pos.15 - INZ sector with designation of lifting characteristics of the SZD thrust plate for pull-out force. pos. 16 - INZ sector with designation of diameters of thread sizes available for installation of SZD anchor rods. pos. 17 - INZ sector with designation of the material from which the insert is made. pos. 18, 19 - an inscription, which is an abbreviation of the first letters of the phrase "vertical construction axis" in Russian and English indicating the distance (step) of the location of the next SZD fastening point (if any), located in the INZ recess showing the direction in which the step should be measured. pos. 20, 21 - an inscription that is an abbreviation of the first letters of the phrase "horizontal construction axis" in Russian and English, indicating the distance (step) of the next attachment point of the horizontal construction axis (if any), located in the recess of the INZ indicating the direction in which the step should be measured. pos. 22 - indicator of the INZ center.

[0041] Implementation of a technical solution

[0042] In the technical solution, the following concepts are understood under the terms used:

[0043] Anchor field is a place on the surface of a structure such as a wall, column, ceiling, floor, etc., with multiple points for attaching the working surfaces of the SZD or other elements.

[0044] A composite embedded part (also referred to as a "CEM") is a structural element for the permanent attachment of equipment, products, or fixtures to a concrete or reinforced concrete horizontal or vertical structure. It consists of an anchor portion in the form of a thrust plate and rods (or without the latter) and a working surface in the form of a plate. A CEM allows for repeated installation of equipment after the building structure has been erected.

[0045] Equipment - includes, but is not limited to, any equipment, fittings, parts, or other structural elements that require attachment to the structures of a building, structure, or facility.

[0046] The anchor part is a set of elements of the anchor system, placed directly in the concrete or reinforced concrete structure of a wall, column, ceiling, floor, etc., consisting both together and separately of a thrust plate and an anchor rod with or without a composite coupling.

[0047] A thrust plate is the anchor portion of a tie rod system responsible for supporting the load from the anchor rod and transferring it to the structure of the wall, column, ceiling, floor, etc. A thrust plate is typically a metal plate or other metal profile wider than the cross-sectional area of ​​the anchor rod. It can be used for a single anchor rod or as a component for securing multiple anchor rods.

[0048] An anchor rod is a component of the anchor portion of a tie rod system, responsible for supporting the load from the working surface to the thrust plate. In the absence of a working surface, it supports the load directly from equipment, fixtures, components, or other structural elements. The anchor rod itself is a prefabricated cylindrical metal component with a smooth or ribbed surface. If an anchor rod with a curved end located within the structure's "body" is used, it can be used without a thrust plate.

[0049] The working surface is the part of the anchor system placed on the surface of a concrete or reinforced concrete structure (wall, column, ceiling, floor, etc.) responsible for supporting the load from equipment, fixtures, components, or other structural elements and transferring it to the anchor rod of the anchor portion of the anchor system. The working surface itself is a plate with through holes, which can be countersunk for attaching the anchor portions of the anchor system. The countersunk holes are used for depositing weld metal or for fastening countersunk bolts.

[0050] The SZD, which is both composite and disassemblable, establishes a connection between the building structure's components and consists of an anchoring element in the form of a thrust plate and rods, where the anchoring element (Fig. 3) is positioned within the structure's "body" during construction. The structure itself is virtually any horizontal or vertical reinforced concrete structural element of a building, structure, or facility—a wall, column, floor, beam, ceiling, roof, beam, flight, etc.

[0051] The composite embedded part consists of a thrust plate (item 1) with a thread for screwing in anchor rods (item 2 or item 5) or without a thread if the anchor rod is welded to the thrust plate. The anchor rod itself (item 2 or item 5) works both independently and together with a composite coupling (item 3) and a stud (item 7), screwed into the coupling (or without the latter) and a working surface (item 8 or item 9). In addition, welding or bolts (item 13) are used to fasten the working surface in some versions, and a washer (item 10), nut (item 11) and locknut (item 12) are used in others. The specified work surface (item 8 or 9) contains holes for anchor rods (item 2), and if welding is used, the holes can be countersunk. The holes are typically spaced evenly for ease of use. The number of holes varies depending on the size of the work surface and the load-bearing requirements of the anchor rod.The SZD may optionally include an INZ and protective caps. The working surface (pos. 8 or pos. 9) is made in the form of a plate, which is, as a rule, a metal sheet of regular shape, with a thickness depending on the operating conditions of the SZD.

[0052] The working surface (pos. 8 or pos. 9) is installed on the structure after the formwork has been removed, due to the fact that the fastening elements of the anchor part of the SZD protrude on the surface, which, depending on the design options, can be: the end of the composite coupling (pos. 3), a smooth or threaded end of the reinforcing bar (pos. 2 or pos. 5) or a stud (pos. 7) screwed into the composite coupling.

[0053] Another possible solution involves welding the anchor rod (item 2 or 5) to a thrust plate on one side, and protecting the other end of the anchor rod (item 2 or 5) from corrosion with a plastic cap or an INS. This cap is positioned within the wall, column, ceiling, etc., until concreting. The plastic cap is made of industrial plastic or corrosion-resistant metal. Welding simplifies the installation of the anchor rod and reduces the final cost of the anchor rod, making welding more readily available in the area where the anchor rod is used.

[0054] The anchor rod itself (item 2 or 5) is a cylindrical rod with a smooth or periodic profile, working both independently and with a composite coupling with a thread at the end for fastening to the thrust plate (item 1) or without a thread if the anchor rod is welded to the thrust plate (item 1), made primarily of metal, designed to transfer the load from the working surface (item 8 or item 9) to the thrust plate (item 1). The load in this case is considered to be the totality of forces (shear, tear-out, torsion, etc.), arising as a result of fastening equipment, accessories, parts or other structural elements to the working surface (item 8 or item 9) or directly to the anchor rod or anchor rods (item 2 or item 5).

[0055] During the installation of the SZD, the anchor rod (item 2 or item 5) can be replaced with an insert, preferably made of plastic, metal-plastic, or wood treated with antiseptics. This insert can be removed from the structure, if necessary, during operation, refurbishment, refitting, or reconstruction of the building, structure, or facility, so that the anchor rod (item 2 or item 5) can be installed in its place. The insert itself is a solid or hollow cylindrical component with a length equal to the depth of the thrust plate (item 1) with a single or multiple threads of different diameters at the end, which is attached to the thrust plate (item 1). The insert is positioned and secured to the structure on a reinforcement cage.

[0056] If necessary, the end of the insert or anchor rod (pos. 2 or pos. 5), located near the surface of the structure, is closed with an INZ, on which information is applied with the main parameters of the load-bearing capacity for the pull-out force, the depth of the thrust plate, the location of adjacent fastening points, the installation pitch of the fastening points and their position in the structure, the material of the insert.

[0057] The INZ itself is a cylindrical flat element, made mainly in whole or in part from a magnetic metal protected from corrosion, on one side of which the above information is applied (pos. 14 - 22) and recesses designating the construction axis of the location of the anchor parts, and on the second side a counter fastening is made, depending on the design options of the SZD, either to the insert, or to the composite coupling (pos. 3), or to the anchor rod (pos. 2 or pos. 5).

[0058] To enable the movement of the working surface of the SZD to different locations on a wall, column, floor, etc., it is recommended to install the anchor portion of the SZD across the entire surface of the intended location or displacement of the working surface of the SZD. The anchor portions of the SZD are installed at a pitch comparable to the pitch of the working bars of the reinforcement cage. As a result, upon completion of concreting, the finished wall, column, floor, etc., has multiple anchor attachment points (anchor field) connected to the supporting reinforcement cage, ready for installation of either the working surface of the SZD or the direct installation of equipment, products, or fixtures.

[0059] With this method, it is possible to achieve high precision in installing the anchors, since the holes for fastening the working surface of the anchors can be made individually for the installation location of the anchors.

[0060] When changing the purpose or function of the premises, it is sufficient to carry out a simple dismantling of the working surface of the old SZD, if it interferes with the installation of the new working surface of the SZD, find the attachment points and de-preserve the anchor part of the SZD located in the structure and install the working surface in the new location.

[0061] Finding attachment points in the final coating when using magnetic metal or magnetic metal-based insulation can be easily accomplished using a magnet or metal detector, which in turn improves the accuracy of the search and reduces the cost of removing the final coating and restoring damaged areas.

[0062] There is no need to make new holes for installing the SZD; the working reinforcement of buildings, structures and facilities remains undamaged.

[0063] To ensure that the working surface of the SZD is flush with the surface of the wall, column, floor, etc., during installation, a template made of lumber or other materials is attached to the anchor portion of the SZD. This template will allow the template to be removed from the finished structure. The template thickness is selected based on the optimal thickness of the SZD working surfaces to be installed.

[0064] The design of anchor fields begins with an analysis of the working documentation, which identifies the locations of the greatest concentration of anchors and, where possible, marks the locations of probable displacement or shifting of their working surfaces. For example, 300, 500, or other millimeters are offset from the design position of the boundaries of the working surfaces of the anchors in different directions. This indicates the geometric dimensions of the "anchor field" (the probable locations of the anchors and the attachment of counter parts, equipment, components, or fixtures to be secured).

[0065] The next step involves determining the highest-priority fastening options from the proposed ZD design options: welding or threaded connections, which are subdivided into nut or bolt types. The possible number, length, and cross-section of anchor rods (Item 2), as well as the types and configuration of thrust plates (Item 1), are selected based on the design solutions for the ZD being replaced.

[0066] Next comes the production stage, where the locations for laying (fastening) anchor parts in the reinforcement frame of the building, structure or facility being erected are designated.

[0067] Anchor parts 1, 2, 3, and 4 are installed assembled to the reinforcement cage at the designated locations (parts 3 and 4 are optional for the threaded connection option) using a template. The installation pitch of the anchor parts may be comparable to or different from the pitch of the working reinforcement.

[0068] The minimum number of anchor parts is 4 pcs. The maximum is limited by the structural and geometric parameters of the structure.

[0069] The template is usually not fixed to the formwork, but does not exclude such fixing.

[0070] After rechecking the position of the anchor parts of the SZD in the reinforcement cage, the structure is concreted. After the concrete has hardened and the formwork and template have been removed, either the ends of the rods or the ends of the couplings with their plugs remain on the concrete surface. If the formwork has shifted during concreting and the coupling plug is not visible, the anchor field is sandblasted, the plugs of the rods used to install the SZD working surface are removed, the SZD working surface is installed, and the excavation is either filled with mortar or not.

[0071] To change the position of the working surface of the SZD, the working surface is dismantled and placed on other installed anchor parts using the above-described options for implementing the installation method.

[0072] Example of implementation

[0073] The initial plan is to use the SZD at fuel and energy industry and nuclear power facilities in buildings with the largest amount of installed equipment to enable accelerated design, refurbishment, and retrofitting. The SZD will then be applied to other industries.

[0074] For example, if equipment with four (4) support mating parts needs to be welded to a wall, the work surface must be a 12 mm thick plate with minimum dimensions of 500 x 500 mm. At the proposed equipment installation location, the wall is equipped with a 6 x 6 meter wide anchor field with anchor rods installed at 150 mm spacing, meaning the anchor field will contain 1,681 attachment points. Based on the above conditions, the equipment can be installed in any available space in the anchor field, and at least nine (9) attachment points (with anchor rods or inserts) can be used to attach one (1) support mating part.

[0075] For the option of installing a pressure regulator with a composite coupling (pos. 3).

[0076] Step 1. At the installation location of the equipment's mating parts, the outermost location of the coupling is found using a magnet or a metal detector; according to the information on the INZ (or without it), the locations of the remaining couplings are found,

[0077] Step 2 36 fastening points are de-preserved, INZ or plastic plugs are unscrewed from the threads of the composite coupling (pos. 3),

[0078] Step 3 Studs (item 7) with a length equal to the sum of the following components are screwed into the composite couplings: the length of the thread of the composite coupling + the thickness of the working surface plate + the thickness of each fastener (nut, washer or lock nut) or bolts (item 13) with a length equal to the sum of the following components: the length of the thread of the composite coupling + the thickness of the working surface plate,

[0079] Step 4 Install 4 (four) working surfaces with holes for the pitch of the anchor rods and the diameter of the holes for the studs or bolts.

[0080] Step 5 The equipment is welded to the working surfaces of the SZD.

[0081] For the option of installing SPD with liners.

[0082] Step 1 At the installation location of the equipment mating parts, the outermost location of the insert is found using a magnet or a metal detector; according to the information on the INZ (or without it), the locations of the remaining inserts are found,

[0083] Step 2: 36 fastening points are de-preserved, the INZ are unscrewed, and the inserts are removed from the wall.

[0084] Step 3 Anchor rods of the required diameter for bearing capacity are installed in the spaces formed by the inserts, with a length equal to the sum of the following components: the depth of the thrust plate (pos. 1) in the wall structure + the thickness of the working surface + the thickness of each fastening element (nut, washer or lock nut), the last component is added if the anchor rod is not welded to the working surface.

[0085] Step 4 Install 4 (four) working surfaces with holes for the pitch of the anchor rods and comparable hole diameters.

[0086] Step 5 The equipment is welded to the working surfaces of the SZD.

[0087] The claimed technical solution, namely the composite embedded part (CEP) and the method of its placement in structures (reinforced concrete and concrete), ensures simpler installation / dismantling of buildings due to the collapsible design of the embedded part.

Claims

METHOD OF LOCATING EMBEDDED PARTS IN A REINFORCED CONCRETE STRUCTURE 1. A method for arranging embedded parts in a reinforced concrete structure, which includes arranging, during the manufacture of the reinforced concrete structure, their anchor parts in the form of thrust plates with threaded holes for accommodating removable anchor rods, characterized in that during the manufacture of the reinforced concrete structure, the thrust plates with threaded holes in them are placed step by step, the anchor parts of the embedded parts are connected to the supporting reinforcement frame of the reinforced concrete structure, removable anchor rods are installed in the threaded holes of the thrust plate for securing the working plates, at the free ends of which plugs are installed, or removable inserts made of plastic, metal-plastic or antiseptic wood are installed in the threaded holes of the thrust plates, forming, upon completion of the manufacture of the reinforced concrete structure, an anchor field with a plurality of attachment points, ready after their de-preservation and, if necessary, replacement of the plastic inserts with anchor rods,to the installation of the corresponding working plates, 2. The method according to paragraph 1, characterized in that the plugs are made in the form of caps made of magnetic metal or plastic, on which information is applied with the parameters of the depth of the thrust plate, the location of adjacent fastening points, the installation pitch and their position in the reinforced concrete structure, and the load capacity for the pull-out force.

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