Pre-assembled shear reinforcement

Abstract

The invention relates to a pre-assembled shear-resistant steel bar installed in a bottom plate around a column, in particular to a pre-assembled shear-resistant steel bar which comprises a plurality of lower main steel bars and upper main steel bars with one ends extending towards the inner side of the column respectively, and folding shear-resistant steel bar strip steel wires continuously bent into a quadrangle to surround the lower main steel bars and the upper main steel bars. The device has good manufacturability, constructability and space utilization rate, is economical and practical, and can reduce the labor force of a construction site and shorten the construction time. The pre-assembled shear reinforcement according to the present invention is mounted inside a floor around a column, and is characterized by comprising: a plurality of lower main reinforcements provided on the lower side inside the floor, one end of each of the lower main reinforcements extending toward the inside of the column; the upper main reinforcements are arranged on the upper side of the interior of the bottom plate and are parallel to the lower main reinforcements, and one ends of the upper main reinforcements extend towards the inner side of the column; and the folding type shear-resistant steel bar strip steel wires are continuously bent into quadrangles so as to surround the lower main reinforcements and the upper main reinforcements.

Description

Technical Field

[0001] This invention relates to a pre-assembled shear reinforcement installed inside the base plate around a column, specifically a pre-assembled shear reinforcement comprising a plurality of lower main reinforcement bars and upper main reinforcement bars extending from one end toward the inner side of the column, and a folded shear reinforcement bar with steel wire continuously bent into a quadrilateral to surround the lower and upper main reinforcement bars. It has good manufacturability, constructability and space utilization, is economical and affordable, and can reduce labor on the construction site and shorten construction time. Background Technology

[0002] With the expansion of building scale and the increase in unsupported structures in recent years, the size of the foundation slab that transfers building loads to the ground is also constantly increasing.

[0003] In particular, the foundation slab near vertical components such as columns and walls will bear greater moments and shear forces, so thicker foundations need to be designed in these areas.

[0004] This significantly increases the amount of excavation, retaining wall construction, and concrete used, thus increasing construction time and costs. However, foundation work accounts for a large portion of the overall frame structure construction cycle and cost, making it crucial to reduce the amount of foundation work.

[0005] Therefore, shear reinforcement is installed in the foundation slab around the columns to reduce the foundation thickness.

[0006] For example, patent number 10-0403835 discloses placing shear-resistant steel bars on the construction site to reinforce the perimeter of vertical members. However, this technique requires a large on-site workforce and significantly increases construction time.

[0007] Therefore, a technology has been developed to form a shear reinforcement assembly unit by pre-assembling multiple stirrups and positioning bars, thereby greatly reducing the amount of on-site work (Patent No.: 10-1557388).

[0008] However, since each stirrup is an independent closed structure, this existing technology requires a significant amount of unit assembly time. Furthermore, the risk of deformation during hoisting necessitates the tedious process of welding and securing the stirrups and positioning reinforcement bars.

[0009] Furthermore, to ensure anchorage length, the ends of the stirrups must be bent at 90° or 135°, which consumes a significant amount of rebar. Additionally, the cutting and processing of rebar inevitably generates rebar scrap. Moreover, positioning rebars simply fix the position of the stirrups; separate foundation rebars need to be installed in the corresponding areas.

[0010] Patent No. 10-0976184 discloses a technique for forming shear-resistant steel bars by inserting upper and lower steel bars into spiral steel bars.

[0011] However, because the spiral reinforcement is bent into a circle, this technique only allows the insertion of one upper reinforcement and one lower reinforcement. Furthermore, the limited internal area of ​​the spiral reinforcement restricts the concrete portion constrained by it, making this technique difficult to apply to thicker foundation slabs, etc. Additionally, the shear reinforcement may deform during hoisting, necessitating welding the spiral reinforcement to the upper and lower reinforcement.

[0012] Furthermore, the upper and lower reinforcing bars are positioning bars installed on the outside of the column, used only to fix the position of the spiral reinforcing bars. Therefore, separate main reinforcing bars must be installed within the floor slab. In addition, the installation of the spiral reinforcing bars is at a certain angle relative to the main reinforcing bars within the floor slab, causing interference with the main reinforcing bars and making it difficult to ensure the coverage thickness.

[0013] Patent No. 10-0624075 discloses a technique for installing foundation reinforcement, which consists of steel plates and reinforcing bars assembled at the column location to reduce the foundation thickness.

[0014] However, this technology requires a large amount of steel, necessitates welding the base steel plate and reinforcing steel plate together, and requires drilling holes in the steel plate to connect the reinforcing bars, making the manufacturing process cumbersome and uneconomical.

[0015] Patent No. 10-2429445 discloses a technique for constructing shear-resistant reinforcement by assembling steel frame plates.

[0016] However, this technology is costly because it involves welding steel frame components and requires custom manufacturing based on the dimensions of each column, thus reducing manufacturing efficiency. Furthermore, the shear reinforcement bars are heavy and difficult to lift, and their large size reduces transportation and space utilization efficiency. Summary of the Invention

[0017] Technical problems to be solved To address the aforementioned problems, this invention provides a pre-assembled shear reinforcement bar that offers excellent manufacturability, constructability, space utilization, and cost-effectiveness.

[0018] The present invention aims to provide a pre-assembled shear reinforcement that can minimize on-site labor and shorten construction time.

[0019] Problem-solving methods According to a preferred embodiment, the present invention provides a pre-assembled shear reinforcement bar installed inside a base plate around a column, characterized in that it includes: a plurality of lower main reinforcement bars disposed on the lower inner side of the base plate, one end of which extends toward the inner side of the column; a plurality of upper main reinforcement bars disposed on the upper inner side of the base plate, parallel to the lower main reinforcement bars, one end of which extends toward the inner side of the column; and folded shear reinforcement bars with steel wires, continuously bent into quadrilaterals to surround the lower and upper main reinforcement bars.

[0020] According to another preferred embodiment, the present invention is characterized in that the folded shear-resistant reinforcing bar with steel wire includes a planar constraint portion and a connecting portion and is foldable, the planar constraint portion is bent and formed on the same plane perpendicular to the lower main bar and the upper main bar to surround the lower main bar and the upper main bar, and the connecting portion is used to connect adjacent planar constraint portions.

[0021] According to another preferred embodiment, the present invention is characterized in that four upper main bars and four lower main bars are provided respectively, and a pair of folded shear reinforcement bars with steel wires are provided, such that the planar constraint portion surrounds two upper main bars and two lower main bars respectively.

[0022] According to another preferred embodiment, the present invention is characterized in that three upper main bars and three lower main bars are provided respectively, and the planar constraint part of the folded shear steel bar with steel wire is formed by bending, which sequentially surrounds the four outermost upper main bars and lower main bars on both sides as well as the remaining upper main bars and lower main bars in the center.

[0023] According to another preferred embodiment, the present invention is characterized in that four upper main bars and four lower main bars are respectively provided, and the planar constraint part of the folded shear steel bar with steel wire is bent into two quadrilateral shapes that overlap each other in the center.

[0024] According to another preferred embodiment, the present invention is characterized in that the two sides of the pre-assembled shear reinforcement are joined with a pair of support rods arranged diagonally and intersecting each other.

[0025] According to another preferred embodiment, the present invention is characterized in that the lower main reinforcement is combined with a fixing plate, and the ends of the lower main reinforcement of the pre-assembled shear reinforcement on the opposite side of the column are combined with the fixing plate.

[0026] According to another preferred embodiment, the present invention is characterized in that the lower part of the lower main rib is provided with a spacer that can adjust the height.

[0027] According to another preferred embodiment, the invention is characterized in that the spacer has rollers for moving pre-assembled shear reinforcement bars.

[0028] According to another preferred embodiment, the present invention is characterized in that the spacer comprises: a support member including a horizontal connecting portion that traverses adjacent lower main ribs, a first vertical portion that bends vertically downward from one end of the horizontal connecting portion, a horizontal support portion that bends vertically downward from the other end of the horizontal connecting portion and is parallel to the lower main ribs, and a second vertical portion that bends vertically downward from the outer end of the horizontal support portion; a leveler that is height-adjustable and coupled to the lower end of one of the first and second vertical portions of the support member; and a roller that is detachably coupled to the lower end of the other of the first and second vertical portions.

[0029] The effects of the invention According to the present invention, a pre-assembled shear reinforcement bar is provided, which is installed inside the base plate around the column. It includes a plurality of lower main bars and upper main bars extending from one end to the inside of the column, and a folded shear reinforcement bar with steel wire continuously bent into a quadrilateral to surround the lower main bars and upper main bars.

[0030] In particular, folded shear reinforcement strips are manufactured in the factory by continuously bending single steel wires in a folding manner, and then stretched on-site to the required length and combined with the lower and upper main reinforcement bars to produce pre-assembled shear reinforcement. This gives it good manufacturability and constructability, minimizes material usage, and thus improves transportation and space utilization.

[0031] In addition, the folded shear reinforcement with steel wire can be tied to the lower and upper main reinforcement bars with binding wire, eliminating the need for a separate welding process, thus being economical, reducing on-site labor, and shortening the construction cycle. Attached Figure Description

[0032] Figure 1 This is a perspective view showing the pre-assembled shear reinforcement of the present invention.

[0033] Figure 2 It is a three-dimensional view showing the pre-assembled shear reinforcement installed in four directions around the column.

[0034] Figures 3 to 6 This is a diagram showing the construction sequence of the pre-assembled shear reinforcement of the present invention.

[0035] Figure 7 It is a 3D diagram showing the folded shear-resistant steel bar with steel wire.

[0036] Figure 8 It is a diagram showing pre-assembled shear reinforcement arranged side by side in two modules surrounding the four main reinforcement bars.

[0037] Figure 9 This is a diagram showing an embodiment of pre-assembled shear reinforcement surrounding six main bars.

[0038] Figure 10 It is a display Figure 9 A three-dimensional diagram of a folded shear-resistant steel bar with steel wire.

[0039] Figure 11 This is a diagram showing an embodiment of pre-assembled shear reinforcement surrounding eight main bars.

[0040] Figure 12 It is a display Figure 11 A three-dimensional diagram of a folded shear-resistant steel bar with steel wire.

[0041] Figure 13 It is a 3D view showing the connection status between the lifting rod and the pre-assembled shear reinforcement.

[0042] Figure 14 It is a three-dimensional diagram showing the connection relationship between the pre-assembled shear reinforcement bars on both sides through the fixing plate.

[0043] Figure 15 It is a display Figure 14 A three-dimensional view of the connection state of the pre-assembled shear reinforcement on both sides.

[0044] Figure 16 It is a three-dimensional view showing a fixing plate with cut-type joint holes.

[0045] Figure 17 It is a display Figure 16 A three-dimensional view of the connection between the lower and middle main reinforcement bars and the fixed plate.

[0046] Figure 18 It is a 3D view showing the spacer.

[0047] Figure 19 It is a three-dimensional diagram showing the connection between the spacer and the lower main reinforcement.

[0048] Figure 20 and Figure 21 It is a perspective view showing a spacer with folding rollers. Detailed Implementation

[0049] The best way to implement an invention To achieve the above objectives, the present invention relates to a pre-assembled shear reinforcement installed inside a base plate around a column, characterized in that it comprises: a plurality of lower main reinforcement bars disposed on the lower inner side of the base plate, one end of which extends toward the inner side of the column; a plurality of upper main reinforcement bars disposed on the upper inner side of the base plate, parallel to the lower main reinforcement bars, one end of which extends toward the inner side of the column; and folded shear reinforcement bars with steel wires, continuously bent into quadrilaterals to surround the lower and upper main reinforcement bars.

[0050] Specific methods of implementing the invention The present invention will now be described in detail with reference to the accompanying drawings and preferred embodiments.

[0051] Figure 1 This is a perspective view showing the pre-assembled shear reinforcement of the present invention. Figure 2 It is a 3D view showing the pre-assembled shear reinforcement installed in four directions around the column. Figures 3 to 6 This is a diagram showing the construction sequence of the pre-assembled shear reinforcement of the present invention.

[0052] like Figure 1 , Figure 2 As shown, the pre-assembled shear reinforcement of the present invention is installed inside the base plate 1 around the column 2, characterized in that it includes: a plurality of lower main reinforcement bars 4, disposed on the lower inner side of the base plate 1, one end of which extends toward the inner side of the column 2; a plurality of upper main reinforcement bars 5, disposed on the upper inner side of the base plate 1, parallel to the lower main reinforcement bars 4, one end of which extends toward the inner side of the column 2; and folded shear reinforcement bars with steel wires 6, continuously bent into quadrilaterals to surround the lower main reinforcement bars 4 and the upper main reinforcement bars 5.

[0053] The present invention aims to provide a pre-assembled shear steel bar with good manufacturability, constructability and space utilization, which is economical and can reduce the labor force on the construction site and shorten the construction time.

[0054] The pre-assembled shear reinforcement 3 of the present invention is embedded and installed on the surrounding surface of the column 2 of the reinforced concrete base plate 1, and the column 2 is constructed on the upper part of the base plate 1.

[0055] The base plate 1 can be a foundation plate or a floor slab, etc.

[0056] The pre-assembled shear reinforcement 3 includes: multiple lower main reinforcement bars 4 and upper main reinforcement bars 5, and folded shear reinforcement bars with steel wires 6 surrounding the lower main reinforcement bars 4 and upper main reinforcement bars 5.

[0057] The pre-assembled shear reinforcement 3 is provided in four parts, installed in four directions with the column 2 as the center, forming a "+" shape. Figure 2 ).

[0058] Multiple lower main ribs 4 are provided on the lower inner side of the base plate 1, and multiple upper main ribs 5 are provided on the upper inner side of the base plate 1, which are parallel to the lower main ribs 4.

[0059] One end of each of the lower main reinforcement 4 and the upper main reinforcement 5 extends toward the inside of the column 2.

[0060] The lower main reinforcement 4 and the upper main reinforcement 5 not only fix the position of the folded shear reinforcement with steel wire 6, but also serve as the main reinforcement of the reinforced concrete base slab 1.

[0061] Therefore, the lower main reinforcement 4 and the upper main reinforcement 5 can pass through the position to be built of the column 2 and be connected to the lower main reinforcement 4 and the upper main reinforcement 5 of the pre-assembled shear reinforcement 3 installed on the other side.

[0062] Furthermore, the lower main reinforcement 4 and the upper main reinforcement 5 can also be connected to the main reinforcement 11 of the base plate 1.

[0063] At this point, multiple main reinforcing bars 11, 4, and 5 can be connected to each other using methods such as lap joints or sleeve joints.

[0064] The folded shear reinforcement strip 6 is continuously bent into a quadrilateral shape to surround the lower main reinforcement 4 and the upper main reinforcement 5 on the outside.

[0065] The folded shear-resistant steel bar with steel wire 6 is made by continuously bending a single steel wire, so no waste is generated.

[0066] The folded shear-resistant steel bar with steel wire 6 is preferably made of high-frequency heat-treated carbon steel, and its surface is formed with spiral grooves through high-frequency heat treatment.

[0067] High-frequency heat-treated steel wire not only has excellent yield strength and tensile strength, but also excellent elasticity, which allows the continuously bent folded shear steel wire 6 to be manufactured in a folded form.

[0068] Therefore, the folded shear reinforcement with steel wire 6 can be manufactured in the factory and delivered to the site in a folded state. The folded shear reinforcement with steel wire 6 is then lengthened to the required length and combined with the lower main reinforcement 4 and the upper main reinforcement 5 to assemble a pre-assembled shear reinforcement 3. This minimizes material volume and improves transportation efficiency and space utilization.

[0069] The construction sequence of the pre-assembled shear reinforcement 3 is as follows: First, pour lean concrete 10 on the ground and construct column reinforcement 21, etc. Figure 3 At this point, a fixed frame 20, assembled from multiple vertical bars 201 and multiple horizontal bars 202, can be constructed to reinforce the column reinforcement 21.

[0070] Next, pre-assembled shear reinforcement 3 is installed on the outside of the column reinforcement 21. Figure 4 In this case, supporting reinforcement bars can be provided on the upper part of the lean concrete 10 to ensure the coverage thickness of the lower main reinforcement 4 and the folded shear reinforcement with wire 6 of the pre-assembled shear reinforcement 3.

[0071] Then, place the lower main reinforcement bars and upper main reinforcement bars 11 of the base plate 1. Figure 5 ), and poured concrete to complete the construction of base slab 1 ( ), Figure 6 ).

[0072] Figure 7 It is a 3D diagram showing the folded shear-resistant steel bar with steel wire.

[0073] like Figure 7 As shown, the folded shear-resistant steel bar with steel wire 6 may include a planar restraint portion 61 and a connecting portion 62 to be foldable. The planar restraint portion 61 is bent and formed on the same plane perpendicular to the lower main reinforcement 4 and the upper main reinforcement 5 to surround the lower main reinforcement 4 and the upper main reinforcement 5. The connecting portion 62 is used to connect adjacent planar restraint portions 61.

[0074] The upper main reinforcement 11 of the base plate 1 is placed on top of the pre-assembled shear reinforcement 3.

[0075] On the other hand, the folded shear-resistant reinforcing steel strip 6 is bent into a quadrilateral shape and continuously arranged along the length of the lower main reinforcement 4 and the upper main reinforcement 5. However, if the folded shear-resistant reinforcing steel strip 6 is bent at an incline relative to the lower main reinforcement 4 and the upper main reinforcement 5, the upper main reinforcement 11 of the base plate 1 will be placed on top of the folded shear-resistant reinforcing steel strip 6 and combined with it, which will inevitably increase the thickness of the base plate 1 to ensure the coverage thickness.

[0076] Therefore, the folded shear-resistant reinforcing steel wire 6 may include: a planar constraint portion 61 formed in a quadrilateral shape on a plane perpendicular to the lower main reinforcement 4 and the upper main reinforcement 5, and a connecting portion 62 for connecting adjacent planar constraint portions 61 and separating one end of the planar constraint portions 61 from each other.

[0077] Therefore, regardless of the folded shear reinforcement with steel wire 6, the upper main reinforcement 11 of the base plate 1 can be placed directly on the upper main reinforcement 5 of the pre-assembled shear reinforcement 3. That is, the spacing between the main reinforcements of the base plate 1 placed in a direction perpendicular to the pre-assembled shear reinforcement can remain constant, and interference with the folded shear reinforcement with steel wire 6 can be avoided.

[0078] The planar constraint part 61 is perpendicular to the lower main reinforcement 4 and the upper main reinforcement 5, and is parallel to the adjacent planar constraint part 61.

[0079] The planar constraint part 61 is designed as a closed structure in the same plane to constrain the internal concrete, thereby achieving a good constraint effect.

[0080] The connecting portion 62 is inclined relative to the lower main reinforcement 4 and the upper main reinforcement 5 to connect adjacent planar constraint portions 61 that are spaced apart along the length direction of the lower main reinforcement 4 and the upper main reinforcement 5. Therefore, the connecting portion 62 is preferably located on the lower side of the lower main reinforcement 4.

[0081] On the other hand, although the attached drawings show the lower part of the connecting part 62 connecting to the plane constraint part 61, in the case of a pile foundation, the connecting part 62 may also be set to connect to the upper part of the plane constraint part 61 to avoid interference with the reinforcing bars of the pile cap extending into the concrete base slab 1, which serves as the foundation base slab.

[0082] Figure 8 It is a diagram showing pre-assembled shear reinforcement arranged side by side in two modules surrounding the four main reinforcement bars.

[0083] like Figure 8 As shown, four upper main bars 5 and four lower main bars 4 can be provided respectively, and a pair of folded shear steel bars with steel wires 6 are provided, so that the planar constraint part 61 surrounds two upper main bars 5 and two lower main bars 4 respectively.

[0084] The number of upper main reinforcement bars 5 and lower main reinforcement bars 4 can be determined according to the width of column 2.

[0085] If there are four upper main reinforcement bars 5 and four lower main reinforcement bars 4, the folded shear reinforcement bar with steel wire 6 can be manufactured modularly to surround a total of four main reinforcement bars 4 and 5. These modules can be arranged side by side and spaced apart in the width direction.

[0086] Similarly, if there are six upper main reinforcement bars 5 and six lower main reinforcement bars 4, these modules can be arranged side by side in three spaced apart along the width direction.

[0087] Therefore, the folded shear reinforcement with steel wire 6 can be modularized into various types, and the necessary modules can be combined together to form pre-assembled shear reinforcement 3.

[0088] Figure 9 This is a diagram showing an embodiment of pre-assembled shear reinforcement surrounding six main bars.

[0089] like Figure 9 As shown, the upper main reinforcement 5 and the lower main reinforcement 4 can each be provided in threes. The planar constraint part 61 of the folded shear steel reinforcement with steel wire 6 is formed by bending, and successively surrounds the four outermost upper main reinforcement 5 and lower main reinforcement 4 on both sides as well as the remaining upper main reinforcement 5 and lower main reinforcement 4 in the center.

[0090] If there are three or more upper main reinforcement bars 5 and lower main reinforcement bars 4 respectively, a folded shear reinforcement bar with steel wire 6 can be continuously bent to connect all the upper main reinforcement bars 5 and lower main reinforcement bars 4.

[0091] Specifically, when there are three upper main reinforcement bars 5 and three lower main reinforcement bars 4, the folded shear reinforcement bar with wire 6 can first surround the outermost upper main reinforcement bars 5 and lower main reinforcement bars 4 on the left and right, and then bend vertically at the central lower main reinforcement bar 4 or upper main reinforcement bar 5 to form a planar restraint part 61. Thus, all the upper main reinforcement bars 5 and lower main reinforcement bars 4 can be connected by a single folded shear reinforcement bar with wire 6.

[0092] When the upper main reinforcement 5 and the lower main reinforcement 4 are each provided in fives, such as Figure 8 As shown, the lower main reinforcement 4 and the upper main reinforcement 5 can be combined to form two rows of modules, and the lower main reinforcement 4 and the upper main reinforcement 5 can be combined to form three rows of modules, forming pre-assembled shear reinforcement 3.

[0093] Among them, the lower main reinforcement 4 and the upper main reinforcement 5 are referred to as the first row, second row, and so on from left to right. Therefore, Figure 8 The four rows of bottom main reinforcement bars 4 and top main reinforcement bars 5 are shown. Figure 9 The three rows of bottom main reinforcement bars 4 and top main reinforcement bars 5 are shown.

[0094] Figure 11 This is a diagram showing an embodiment of pre-assembled shear reinforcement surrounding eight main bars. Figure 12 It is a display Figure 11 A three-dimensional diagram of a folded shear-resistant steel bar with steel wire.

[0095] like Figure 11 , Figure 12 As shown, the upper main reinforcement 5 and the lower main reinforcement 4 can each be provided with four, and the planar constraint part 61 of the folded shear steel reinforcement with steel wire 6 is bent into two quadrilateral shapes that overlap in the center.

[0096] When four of the upper main reinforcement bars 5 and four of the lower main reinforcement bars 4 are provided, they can be bent to form two quadrilaterals overlapping each other, forming a folded shear-resistant steel bar with steel wire 6.

[0097] Specifically, the folded shear steel bar with steel wire 6 is bent into a quadrilateral shape that surrounds the lower main reinforcement 4 and upper main reinforcement 5 of the first and third rows on the cross section. Then, the folded shear steel bar with steel wire 6 is continuously bent into a quadrilateral shape that surrounds the lower main reinforcement 4 and upper main reinforcement 5 of the second and fourth rows.

[0098] The folded shear reinforcement with steel wire 6 effectively confines the concrete within the central quadrilateral region where two quadrilaterals overlap, thereby improving strength and ductility.

[0099] Pre-assembled shear reinforcement 3 can be formed by combining the lower main reinforcement 4 and the upper main reinforcement 5 to form two rows of modules, three rows of modules, or four rows of modules.

[0100] Figure 13 It is a 3D view showing the connection status between the lifting rod and the pre-assembled shear reinforcement.

[0101] like Figure 1 , Figure 13 As shown, the two sides of the pre-assembled shear reinforcement 3 can be combined with a pair of support rods 60 arranged diagonally and intersecting each other.

[0102] Traditional pre-assembled steel reinforcement assemblies are prone to deformation, such as twisting, during lifting, depending on the connection point of the lifting rod. Therefore, steel bars or wires must be welded to them for fixation.

[0103] However, welding manufacturing is very time-consuming. In addition, the welding process must be carried out in the factory, and pre-assembled components must be assembled in the factory and transported to the site, which increases the volume of materials and hinders transportation and space utilization.

[0104] Therefore, a pair of support rods 60 can be installed on each side of the pre-assembled shear reinforcement 3 to form an X-shaped support structure.

[0105] The support rod 60 can be made of steel bars, steel wires or steel rods, etc., and can be fixed to the folded shear-resistant steel bar with steel wires 6 by binding wires, etc.

[0106] Therefore, the pre-assembled shear reinforcement 3 can be ensured to maintain its shape during hoisting by simply tying the folded shear reinforcement strip 6 to the lower main reinforcement 4 and the upper main reinforcement 5 with the binding line, without welding, thereby achieving the welding-free assembly of the pre-assembled shear reinforcement 3.

[0107] It is worth noting that, since welding is not required, in some cases, the folded shear reinforcement with steel wire 6, as well as the lower main reinforcement 4 and the upper main reinforcement 5, can be transported to the site and simply assembled on-site using tying wires, without the need for pre-assembly in the factory.

[0108] Furthermore, if easily foldable high-frequency heat-treated steel wire is used as the folded shear-resistant reinforcing steel wire 6, the folded shear-resistant reinforcing steel wire 6 can be folded in the factory and transported to the site in a folded state. This facilitates transportation and maximizes space utilization.

[0109] Furthermore, it is easy to adapt to field conditions because it can be assembled using solderless binding wire.

[0110] Figure 14It is a three-dimensional diagram showing the connection relationship between the pre-assembled shear reinforcement bars on both sides through the fixing plate. Figure 15 It is a display Figure 14 A three-dimensional diagram showing the connection state of the pre-assembled shear reinforcement on both sides. Furthermore, Figure 16 It is a three-dimensional view showing a fixing plate with cut-type joint holes. Figure 17 It is a display Figure 16 A three-dimensional view of the connection between the lower and middle main reinforcement bars and the fixed plate.

[0111] like Figure 14 , Figure 15 As shown, the lower main reinforcement 4 can be combined with a fixing plate 7, and the ends of the lower main reinforcement 4 of the pre-assembled shear reinforcement 3 on the opposite side of the column 2 are combined with the fixing plate 7.

[0112] The lower main reinforcement 4 and the upper main reinforcement 5 serve as structural components and can be connected to the lower main reinforcement 4 and the upper main reinforcement 5 of the pre-assembled shear reinforcement 3 on the opposite side by passing through the column 2.

[0113] At this point, when the lower main reinforcement 4 and the upper main reinforcement 5 are lapped, it is necessary to use binding wires or other means to fix the multiple main reinforcements 4 and 5 to be connected in order to prevent displacement during the concrete pouring process.

[0114] The upper main reinforcement 5 is relatively easy to access, and the binding operation is simple. However, the lower main reinforcement 4 interferes with the column reinforcement 21 or the fixed frame 20, making the binding operation more difficult.

[0115] Therefore, by combining the lower main reinforcement 4 with the fixing plate 7 and combining the end of the lower main reinforcement 4 on the opposite side with the fixing plate 7, the separate on-site binding operation can be eliminated.

[0116] The fixing plate 7 can be set on the outside of the column reinforcement 21.

[0117] When a fixing frame 20 for installing the column reinforcement 21 is provided, the fixing plate 7 can be tightly fixed to the outside of the vertical rod 201 constituting the fixing frame 20. Figure 15 ).

[0118] like Figures 14 to 17 As shown, a connecting hole 71 is formed in the fixing plate 7, so that the lower main bars 4 and 4' of the opposite pre-assembled shear steel bars 3 are inserted into the connecting hole 71 of the fixing plate 7 and connected.

[0119] The connecting hole 71 can be designed as an elongated hole with a horizontal length. Therefore, the fixing plate 7 is connected such that the lower main bar 4 of the pre-assembled shear steel bar 3 on one side is inserted into one side of the connecting hole 71, and then the lower main bar 4' of the pre-assembled shear steel bar 3 on the opposite side, which is installed subsequently, is inserted into the remaining part of the connecting hole 71.

[0120] As described above, when inserting the lower main reinforcement 4 into the connecting hole 71, it is necessary to move the pre-assembled shear reinforcement 3 on the opposite side along the length direction of the lower main reinforcement 4 while simultaneously inserting the lower main reinforcement 4' into the connecting hole 71. However, if the gap of the connecting hole 71 is small, inserting the lower main reinforcement 4' may be difficult.

[0121] Therefore, as Figure 16 , Figure 17 As shown, the fixing plate 7 can be cut into an L-shape consisting of a vertical part and a horizontal part, so that the upper part is open to form the connecting hole 71. After the pre-assembled shear reinforcement 3 on the opposite side is installed, the lower main reinforcement 4' can be connected to the connecting hole 71 from the top by taking advantage of its elasticity.

[0122] Specifically, the pre-assembled shear reinforcement 3 on one side can be combined with the fixing plate 7 in advance, so that the lower main reinforcement 4 can be inserted into the horizontal part of the connecting hole 71.

[0123] After the pre-assembled shear reinforcement 3 is installed on one side, the lower main reinforcement 4' of the pre-assembled shear reinforcement 3 on the other side (i.e., the opposite side) is inserted through the vertical part of the connecting hole 71 and moved to the inner side of the horizontal part to be connected with the fixing plate 7. Figure 17 ).

[0124] The length and spacing of the column reinforcement 21 can be considered, and a fixing plate 7 can also be installed on the upper main reinforcement 5.

[0125] Figure 18 It is a 3D view showing the spacer. Figure 19 It is a three-dimensional diagram showing the connection between the spacer and the lower main reinforcement.

[0126] like Figure 19 As shown, a height-adjustable spacer 8 can be provided at the lower part of the lower main rib 4.

[0127] The lower main reinforcement 4 and upper main reinforcement 5 of the pre-assembled shear reinforcement must have a specified covering thickness as structural components.

[0128] On the other hand, after the pre-assembled shear reinforcement 3 is installed on both sides of the column 2, it is necessary to adjust the installation height of the pre-assembled shear reinforcement 3 to make them consistent in height so as to connect the lower main reinforcement 4 and the upper main reinforcement 5.

[0129] However, if the base plate 1 is a foundation base plate, the flatness of the lean concrete 10 poured below the foundation base plate is poor. Therefore, it is necessary to fine-tune the height after installing the pre-assembled shear reinforcement 3 on the upper part of the lean concrete 10.

[0130] Therefore, a height-adjustable spacer 8 can be provided at the lower part of the lower main reinforcement 4 to ensure the coverage thickness of the pre-assembled shear reinforcement 3 and adjust its height, so that the height of the pre-assembled shear reinforcement 3 on both sides is adjusted to be consistent.

[0131] The spacer 8 can be used to ensure the coverage thickness of the lower main rib 4.

[0132] Meanwhile, after installing the pre-assembled shear reinforcement bars 3 on both sides, the height of the spacer 8 can be adjusted so that the heights of the main reinforcement bars 4 and 5 on both sides are consistent before connection.

[0133] like Figure 18 As shown, the spacer 8 may have rollers 83 for moving the pre-assembled shear reinforcement 3.

[0134] The lower main reinforcement 4 and upper main reinforcement 5 of the pre-assembled shear reinforcement 3 can extend and protrude towards the column 2. Therefore, when column reinforcement 21 or fixed frame 20 is provided, it is difficult to lift and install the pre-assembled shear reinforcement 3 vertically downward due to interference with it.

[0135] Therefore, after the pre-assembled shear reinforcement 3 is installed on one side of column 2, the pre-assembled shear reinforcement 3 can be slid toward column 2, so that the lower main reinforcement 4 and the upper main reinforcement 5 pass through column 2.

[0136] Therefore, rollers 83 can be installed on the spacer 8 so that operators can move the pre-assembled shear reinforcement 3 without using lifting equipment.

[0137] The roller 83 is only used to move the pre-assembled shear reinforcement 3. After the pre-assembled shear reinforcement 3 is placed, its position needs to be fixed, so it is not needed. Therefore, the roller 83 is preferably detachably attached to the spacer 8.

[0138] Figure 20 and Figure 21 It is a perspective view showing a spacer with folding rollers.

[0139] like Figure 20 , Figure 21As shown, the spacer 8 may include: a support 81, comprising a horizontal connecting portion 811 that traverses an adjacent lower main rib 4, a first vertical portion 812 that bends vertically downward from one end of the horizontal connecting portion 811, a horizontal support portion 813 that bends vertically downward from the other end of the horizontal connecting portion 811 and is parallel to the lower main rib 4, and a second vertical portion 814 that bends vertically downward from the outer end of the horizontal support portion 813; a leveler 82 that is height-adjustable and attached to the lower end of one of the first vertical portion 812 and the second vertical portion 814 of the support 81; and a roller 83 that is detachably attached to the lower end of the other of the first vertical portion 812 and the second vertical portion 814.

[0140] The spacer 8 may include: a support 81 that is coupled to the lower part of the lower main reinforcement 4 to support the pre-assembled shear reinforcement 3; a leveler 82 coupled to the lower part of the support 81; and a roller 83.

[0141] The support member 81 may include a horizontal connecting part 811, a first vertical part 812, a horizontal support part 813, and a second vertical part 814.

[0142] The support member 81 can be made by bending steel bars, etc.

[0143] The horizontal connecting part 811 passes through the adjacent lower main reinforcement bar 4 and supports the lower main reinforcement bar 4. The horizontal connecting part 811 can be fixed to the lower main reinforcement bar 4 by means of binding wire or the like.

[0144] A first vertical portion 812 that bends downwards is formed at one end of the horizontal connecting portion 811.

[0145] A second vertical portion 814 is formed at the other end of the horizontal connecting portion 811.

[0146] However, if the two ends of the horizontal connecting portion 811 are bent directly downwards vertically to form the first vertical portion 812 and the second vertical portion 814, the spacer 8 may rotate. Therefore, to prevent this from happening, the horizontal connecting portion 811 and the second vertical portion 814 can be spaced apart from each other and connected by the horizontal support portion 813.

[0147] In other words, the horizontal support 813 can be parallel to the lower main rib 4 in the length direction of the lower main rib 4 and supported by the lower main rib 4 to prevent the spacer 8 from rotating.

[0148] Although not shown in the figure, a horizontal support portion may be provided between the first vertical portion 812 and the horizontal connecting portion 811 as needed.

[0149] One of the first vertical portion 812 and the second vertical portion 814 is coupled to the leveler 82, while the other is coupled to the roller 83.

[0150] Figures 18 to 21 An embodiment is shown in which the lower end of the first vertical portion 812 is engaged with the leveler 82, and the lower end of the second vertical portion 814 is engaged with the roller 83. The following description is based on these embodiments.

[0151] The leveler 82 can be attached to the first vertical portion 812 in a height-adjustable manner. For this purpose, threads can be formed on the outer peripheral surface of the first vertical portion 812 to thread the leveler 82 to the first vertical portion 812.

[0152] The roller 83 can be detachably coupled to the second vertical portion 814. For this purpose, similar to the leveler 82, threads can be formed on the outer peripheral surface of the second vertical portion 814 to thread the roller 83 to the second vertical portion 814.

[0153] To move the pre-assembled shear reinforcement 3, the leveler 82 can be rotated to raise it, moving the pre-assembled shear reinforcement 3 while the roller 83 is in contact with the upper surface of the lean concrete 10. Next, after placing the pre-assembled shear reinforcement 3, the leveler 82 can be rotated to lower it, allowing the leveler 82 to support the pre-assembled shear reinforcement 3.

[0154] When the pre-assembled shear reinforcement 3 is supported by the leveler 82, the roller 83 can be removed from the second vertical part 814.

[0155] At this point, when the roller 83 is threaded into the second vertical portion 814, the roller 83 needs to be rotated in the opposite direction to disassemble it from the second vertical portion 814. In this case, a certain amount of free space needs to be left between the roller 83 and the lean concrete 10.

[0156] For this purpose, the leveler 82 can be lowered further to separate the roller 83 from the upper surface of the lean concrete 10, and then disassembled and removed.

[0157] Alternatively, the roller 83 can be designed to be foldable, so that when the pre-assembled shear reinforcement 3 is supported by the leveler 82, the roller 83 can be rotated horizontally to fold it, and then rotated in the opposite direction to remove it from the second vertical part 814. Figure 20 , Figure 21 ).

[0158] The support 81 and leveler 82 can be permanently embedded in the base slab concrete, and the roller 83 can be disassembled and reused after the pre-assembled shear reinforcement 3 is installed.

[0159] Industrial applicability The pre-assembled shear reinforcement of this invention can be manufactured in the factory by continuously bending a single steel wire to create folded shear reinforcement strips. These strips are then stretched to the required length on-site and combined with the lower and upper main reinforcement bars to produce pre-assembled shear reinforcement. This gives it good manufacturability and constructability, minimizes material usage, and improves transportation and space utilization, thus making it industrially practical.

Claims

1. A pre-assembled shear reinforcement (3) installed inside a base plate (1) surrounding a column (2), characterized in that, include: Multiple lower main reinforcement bars (4) are provided on the lower inner side of the base plate (1), with one end extending toward the inner side of the column (2); Multiple upper main reinforcement bars (5) are disposed on the upper inner side of the base plate (1), parallel to the lower main reinforcement bars (4), with one end extending towards the inner side of the column (2); and The folded shear reinforcement with steel wire (6) is continuously bent into a quadrilateral to surround the lower main reinforcement (4) and the upper main reinforcement (5).

2. The pre-assembled shear reinforcement according to claim 1, characterized in that, The folded shear-resistant steel bar with steel wire (6) includes a planar restraint part (61) and a connecting part (62) and is foldable. The planar restraint part (61) is bent and formed on the same plane perpendicular to the lower main bar (4) and the upper main bar (5) to surround the lower main bar (4) and the upper main bar (5). The connecting part (62) is used to connect adjacent planar restraint parts (61).

3. The pre-assembled shear reinforcement according to claim 2, characterized in that, The upper main reinforcement (5) and the lower main reinforcement (4) are provided in fours respectively, and the folded shear steel reinforcement with steel wire (6) is provided in a pair, so that the planar constraint part (61) surrounds the two upper main reinforcement (5) and the lower main reinforcement (4) respectively.

4. The pre-assembled shear reinforcement according to claim 2, characterized in that, The upper main reinforcement (5) and the lower main reinforcement (4) are provided in threes respectively. The planar constraint part (61) of the folded shear steel bar with steel wire (6) is formed by bending, and surrounds the four outermost upper main reinforcement (5) and lower main reinforcement (4) on both sides in sequence, as well as the remaining upper main reinforcement (5) and lower main reinforcement (4) in the center.

5. The pre-assembled shear reinforcement according to claim 2, characterized in that, The upper main reinforcement (5) and the lower main reinforcement (4) are provided with four of each. The planar constraint part (61) of the folded shear steel bar with steel wire (6) is bent into two quadrilateral shapes that overlap in the center.

6. The pre-assembled shear reinforcement according to claim 1, characterized in that, The pre-assembled shear reinforcement (3) is joined on both sides by a pair of support rods (60) arranged diagonally and intersecting each other.

7. The pre-assembled shear reinforcement according to claim 1, characterized in that, The lower main reinforcement (4) is connected to a fixing plate (7), and the end of the lower main reinforcement (4) of the pre-assembled shear reinforcement (3) on the opposite side of the column (2) is connected to the fixing plate (7).

8. The pre-assembled shear reinforcement according to claim 1, characterized in that, The lower part of the main reinforcement bar (4) is provided with a spacer (8) that can adjust the height.

9. The pre-assembled shear reinforcement according to claim 8, characterized in that, The spacer (8) has rollers (83) for moving the pre-assembled shear reinforcement (3).

10. The pre-assembled shear reinforcement according to claim 9, characterized in that, The spacer (8) includes: The support member (81) includes a horizontal connecting part (811) that crosses the adjacent lower main reinforcement (4), a first vertical part (812) that bends vertically downward from one end of the horizontal connecting part (811), a horizontal support part (813) that bends vertically from the other end of the horizontal connecting part (811) and is parallel to the lower main reinforcement (4), and a second vertical part (814) that bends vertically downward from the outer end of the horizontal support part (813). A leveling device (82) is attached to the lower end of one of the first vertical portion (812) and the second vertical portion (814) of the support member (81) in a height-adjustable manner; and The roller (83) is detachably attached to the lower end of the other of the first vertical portion (812) and the second vertical portion (814).

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