A double-column telescopic joint place formwork reinforcing adjustable back joint

Abstract

The utility model provides a kind of adjustable back of template reinforcement of double-column expansion joint, and the template of double-column expansion joint in it includes the column template located the both sides of expansion joint;The adjustable back includes: support steel beam, two support steel beams are oppositely arranged and parallel to column template;Connecting sheet, the two ends of two support steel beams are respectively connected movably by several connecting sheets;And adjusting bolt group, multiple adjusting bolt groups are arranged between two support steel beams, and equidistantly distributed along the length direction of support steel beam;Adjusting bolt group is configured as the two support steel beams movably connected can be driven and is adjusted in the direction perpendicular to column template in expansion and contraction.This utility model can solve the problem that the template of existing technology narrow expansion joint space is difficult to remove.

Description

Technical Field

[0001] This utility model relates to an adjustable back rib for reinforcing templates at double-column expansion joints, belonging to the field of building expansion joint reinforcement technology. Background Technology

[0002] Double-column expansion joints are a type of building deformation joint, mainly used to release the internal forces generated by temperature changes and concrete shrinkage in the structure. Its core feature is the installation of two columns at the expansion joint, which disconnects the upper structure and makes the two sides of the structure independent units, thus allowing them to expand and contract freely in the horizontal direction.

[0003] In the construction industry, to ensure the quality of concrete pouring for reinforced concrete columns, it is necessary to reinforce the wooden formwork between the two columns. However, the size of this expansion joint between the two columns is relatively small, generally about 100mm. After deducting the thickness of the wooden formwork used for pouring the reinforced concrete columns on both sides, the available reinforcement distance between the two columns is only about 70mm.

[0004] Furthermore, traditional methods of reinforcing wooden formwork at expansion joints typically employ fixed-size back braces, such as the support components in the double-column formwork reinforcement device and its construction method described in CN113389373A. Such fixed back brace reinforcement structures are prone to being squeezed tight by the lateral pressure of the concrete after pouring, making the formwork and back braces difficult to remove. Summary of the Invention

[0005] In order to overcome the above-mentioned shortcomings of the prior art, this utility model provides an adjustable back rib for the reinforcement of templates at double-column expansion joints. The adjustable back rib facilitates template removal, improves reinforcement strength, and has a simple structure.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] An adjustable back brace for reinforcing formwork at a double-column expansion joint, wherein the double-column expansion joint formwork includes column formwork located on both sides of the expansion joint; the adjustable back brace includes:

[0008] Supporting steel beams, two supporting steel beams are set opposite each other and parallel to the column formwork;

[0009] Connecting plates: The two ends of the two supporting steel beams are movably connected by several connecting plates;

[0010] And adjusting bolt groups, multiple adjusting bolt groups are set between two supporting steel beams and are equidistantly distributed along the length of the supporting steel beams;

[0011] The adjusting bolt assembly is configured to drive the two supporting steel beams after the movable connection to extend and retract in a direction perpendicular to the column formwork.

[0012] As a further optional design of this technical solution, the supporting steel beams are C-shaped steel beams with C-grooves. The C-grooves of the two C-shaped steel beams are placed with one side facing each other and the other side facing the column formwork.

[0013] As a further optional design of this technical solution, the two ends of the two C-shaped steel beams are connected by two connecting plates. Each connecting plate has a movable hole with a length perpendicular to the column template direction at the position corresponding to the two C-shaped steel beams. Each C-shaped steel beam has a connecting hole at the position corresponding to the movable hole. A connecting bolt passes through each pair of movable holes and connecting holes.

[0014] As a further optional design of this technical solution, the adjusting bolt assembly includes a double-ended adjusting bolt and two adjusting nuts. The double-ended adjusting bolt has a middle fixing nut and a positive threaded bolt and a negative threaded bolt respectively fixedly connected to both ends of the middle fixing nut.

[0015] The two adjusting nuts are screwed into the positive thread bolt and the negative thread bolt respectively, and are placed inside the two supporting steel beams.

[0016] As a further optional design of this technical solution, a grid cavity is provided in the C-groove of the C-shaped steel beam, corresponding to the position of the adjusting bolt group, for placing the corresponding adjusting nut.

[0017] With the above technical solution, the adjustable back rib for reinforcing the template at the double-column expansion joint of this utility model realizes the movable adjustability of the back rib by setting a supporting steel beam with an adjusting bolt group and connecting piece. It can flexibly reinforce and quickly disassemble within the expansion joint, thus facilitating the removal of the template and back rib. At the same time, it has the advantages of simple structure and high strength, and can adapt to the complex construction environment on site.

[0018] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the structure of the adjustable back rib for reinforcing the template at the double-column expansion joint in one embodiment of this utility model.

[0021] Figure 2 yes Figure 1 A cross-sectional view of section AA, and it is an enlarged view.

[0022] Figure 3 yes Figure 2 A structural diagram in another state.

[0023] Figure 4 yes Figure 1 A cross-sectional view of section BB, and it is an enlarged view.

[0024] Figure 5 yes Figure 4 A structural diagram in another state.

[0025] Figure 6 yes Figure 1 A cross-sectional view of the structure at point CC, and it is an enlarged view.

[0026] Figure 7 yes Figure 1 A partial structural diagram at point D, and it is an enlarged structural diagram.

[0027] Figure 8 yes Figure 7 A structural diagram in another state.

[0028] Figure 9 This is a schematic diagram of the structure of the template reinforcement adjustable back rib at the double column expansion joint in one embodiment of this utility model before application.

[0029] Figure 10 This is a schematic diagram of the structure after applying the adjustable back rib for template reinforcement at the double-column expansion joint in one embodiment of this utility model.

[0030] Explanation of the markings in the diagram:

[0031] 1- Adjustable back rib;

[0032] 11-Supporting steel beam; 111-C-shaped steel beam; 111-1-C-channel; 111-1-square cavity; 111-2-Connecting hole;

[0033] 12-Connecting piece; 12-1-Modible hole; 121-Connecting bolt;

[0034] 13-Adjusting bolt assembly; 131-Double-ended adjusting bolt; 1311-Intermediate fixing nut; 1312-Straight thread bolt; 1313-Reverse thread bolt; 132-Adjusting nut;

[0035] 2-Formwork at the double-column expansion joint;

[0036] 21-Column formwork;

[0037] 3- Timber;

[0038] 31-Supporting component;

[0039] 41-Main beam; 411-Tie bolt;

[0040] 42-Secondary beam;

[0041] 5-Expansion joint;

[0042] 6-Reinforced concrete column. Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0044] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0045] In the description of this utility model, it should be understood that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this utility model. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0046] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0047] Figures 1 to 10 The diagram shows a preferred embodiment of the present invention. The adjustable back brace for reinforcing a double-column expansion joint includes supporting steel beams 11, connecting pieces 12, and adjusting bolt groups 13. Two supporting steel beams 11 are arranged opposite each other and parallel to the column template 21. The two ends of the two supporting steel beams 11 are movably connected by several connecting pieces 12. Multiple adjusting bolt groups 13 are arranged between the two supporting steel beams 11 and are equidistantly distributed along the length of the supporting steel beams 11. The adjusting bolt groups 13 are configured to drive the two movably connected supporting steel beams 11 to extend and retract in a direction perpendicular to the column template 21.

[0048] Reference Figure 9 and Figure 10 In this embodiment, the pouring space of each reinforced concrete column 6 is a cubic cavity surrounded by four wooden templates. The space between the two pouring spaces is the expansion joint 5. The template 2 at the double column expansion joint is the column template 21 located on both sides of the expansion joint 5 (i.e., two wooden templates close to each other). The adjustable back rib 1 in this embodiment is used to reinforce the column template 21 here.

[0049] Also refer to Figure 9 and Figure 10More specifically, a reinforcing frame is provided around the two reinforced concrete columns 6. This reinforcing frame consists of two parallel main beams 41 and two parallel secondary beams 42 connected vertically end to end. Multiple wooden beams 3 support the outer side of the wooden formwork for the two reinforced concrete columns 6 (the other six wooden formworks besides the column formwork 21 mentioned above) and the inner side of the reinforcing frame. Wooden beams 3 are also arranged at the four corners of each reinforced concrete column 6. Tie bolts 411 are also installed between the two main beams 41 at the expansion joint 5 (i.e., tie bolts 411 are installed within the vertical spacing of the two supporting steel beams 11 to reinforce the main beams 41). These tie bolts 411 are staggered from the adjustable back brace 1. The combined use of the tie bolts 411 and the adjustable back brace 1 achieves adjustable bidirectional vertical reinforcement of the wooden formwork, ensuring reinforcement strength while adapting to complex on-site construction environments.

[0050] During installation, multiple adjustable back braces 1 are installed along the height of the reinforced concrete column 6. The spacing between adjacent back braces can be set to approximately 150-250mm according to site requirements. (Refer to...) Figure 9 Each adjustable back brace 1 can extend expansion joints 5 at both ends (which to some extent enables the adjustable back brace 1 to provide more stable support and reinforcement for the column formwork 21 during use, which is conducive to improving the quality and safety of concrete pouring) and is supported between the wooden blocks 3 at the two inner corners of the two reinforced concrete columns 6. Specifically, nails can be driven into the vertical wooden blocks 3 at both ends of the adjustable back brace 1 as support members 31 to support the ends of the two supporting steel beams 11.

[0051] When using, refer to Figure 4 and Figure 5 After the column formwork 21 is installed, use a wrench to shorten the adjusting bolt group 13, and then put the entire adjustable back rib 1 into the expansion joint 5. Place the two ends of the adjustable back rib 1 on the corresponding wooden blocks 3. After the position of the adjustable back rib 1 is determined, use a wrench to extend the adjusting bolt group 13 again to tighten the two C-shaped steel beams 111, thereby achieving the effect of reinforcing the formwork.

[0052] As can be seen, the adjustable back rib 1 in this embodiment is not only simple in structure, but also has the ability to expand and contract in a direction perpendicular to the column formwork 21, making it suitable for expansion joints 5 in narrow spaces. After the concrete is poured, the overall thickness of the back rib can be shortened by adjustment, which facilitates the removal of the formwork and the back rib.

[0053] Reference Figures 1-6 For example, the supporting steel beam 11 of this utility model embodiment can be a C-shaped steel beam 111 with a C-groove 111-1. The C-groove 111-1 of the two C-shaped steel beams 111 are placed with one side facing each other and the other side facing the column template 21.

[0054] Reference Figure 1-3 and Figure 7 , 8 For example, in this embodiment of the present invention, the two ends of the two C-shaped steel beams 111 are connected by two connecting pieces 12 respectively (that is, a total of four connecting pieces 12 are used, and the two connecting pieces 12 at each end are arranged symmetrically). Each connecting piece 12 has a movable hole 12-1 with a length perpendicular to the column template 21 at the position corresponding to the two C-shaped steel beams 111 (that is, two movable holes 12-1 are symmetrically opened on each connecting piece 12, and a total of eight movable holes 12-1 are provided on the four connecting pieces 12). Each C-shaped steel beam 111 has a connecting hole 111-2 at the position corresponding to the movable hole 12-1 (that is, a total of eight connecting holes 111-2 are opened at both ends of the two C-shaped steel beams 111). Each pair of movable holes 12-1 and connecting holes 111-2 is provided with a connecting bolt 121 (that is, a total of eight connecting bolts 121 are used to realize the movable connection of the four connecting pieces 12 on the two C-shaped steel beams 111).

[0055] Reference Figure 7 and Figure 8 More specifically, the movable hole 12-1 is an elongated, slotted hole. Since one end of the connecting bolt 121 is fixedly connected to the C-shaped steel beam 111, and the other end is slidably disposed within this slotted hole, the distance between the two C-shaped steel beams 111 can be adjusted as the connecting bolt 121 moves within the slotted hole (see...). Figure 2 and Figure 3 ).

[0056] Reference Figures 4-5 For example, the adjusting bolt group 13 of this utility model embodiment may include a double-ended adjusting bolt 131 and two adjusting nuts 132. The double-ended adjusting bolt 131 has a middle fixing nut 1311 and a straight threaded bolt 1312 and a reverse threaded bolt 1313 respectively fixedly connected to both ends of the middle fixing nut 1311. The two adjusting nuts 132 are respectively screwed into the straight threaded bolt 1312 and the reverse threaded bolt 1313, and are respectively placed in the two supporting steel beams 11.

[0057] In practice, 2-3 sets of adjusting bolts 13 can be placed between the two supporting steel beams 11 and in the middle of the connecting pieces 12 at both ends, depending on the site conditions, to meet the reinforcement requirements of the column formwork 21.

[0058] During operation, shortening or lengthening of the adjusting bolt assembly 13 is achieved by tightening the middle fixing nut 1311 of the double-ended adjusting bolt 131. This causes the two adjusting nuts 132 to move on the positive thread bolt 1312 and the negative thread bolt 1313 of the double-ended adjusting bolt 131. When the two nuts are closer together, the overall length decreases (see...). Figure 5 Conversely, the overall length increases (see...). Figure 4Therefore, during the length adjustment process, the template reinforcement and adjustability are achieved. The disassembly of the adjusting bolt group 13 is achieved by inserting and removing the adjustable nut from the C-shaped steel beam 111 when the adjusting bolt group 13 is shortened.

[0059] Reference Figure 6 For example, a grid cavity 111-1-1 can be provided in the C-groove 111-1 of the C-shaped steel beam 111 in this embodiment of the present invention, corresponding to the position of the adjusting bolt group 13, for placing the corresponding adjusting nut 132.

[0060] By placing the adjusting nut 132 inside the square cavity 111-1-1, the adjusting bolt group 13 and the C-shaped steel beam 111 are non-fixedly connected, which can prevent them from falling off during adjustment and reinforcement operations, while also meeting the usage restriction conditions of small operating space.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. An adjustable back brace for reinforcing a template at a double-column expansion joint, wherein the template at the double-column expansion joint includes column templates located on both sides of the expansion joint; characterized in that, The adjustable back rib includes: Supporting steel beams, two of which are arranged opposite each other and parallel to the column formwork; The two ends of the two supporting steel beams are movably connected by a number of such connecting pieces. And adjusting bolt groups, wherein multiple adjusting bolt groups are disposed between the two supporting steel beams and are equidistantly distributed along the length direction of the supporting steel beams; The adjusting bolt assembly is configured to drive the two supporting steel beams, which are movably connected, to extend and retract in a direction perpendicular to the column template.

2. The adjustable back brace for reinforcing a double-column expansion joint template according to claim 1, characterized in that, The supporting steel beams are C-shaped steel beams with C-grooves. The C-grooves of the two C-shaped steel beams are placed with one side facing each other and the other side facing the column formwork.

3. The adjustable back rib for reinforcing a double-column expansion joint template according to claim 2, characterized in that, The two ends of the two C-shaped steel beams are connected by two connecting plates. Each connecting plate has a movable hole with a length perpendicular to the column template direction at the position corresponding to the two C-shaped steel beams. Each C-shaped steel beam has a connecting hole at the position corresponding to the movable hole. A connecting bolt passes through each pair of movable holes and connecting holes.

4. The adjustable back brace for reinforcing a double-column expansion joint template according to claim 3, characterized in that, The adjusting bolt assembly includes a double-ended adjusting bolt and two adjusting nuts. The double-ended adjusting bolt has a central fixing nut and a positive thread bolt and a negative thread bolt respectively fixedly connected to both ends of the central fixing nut. The two adjusting nuts are screwed into the positive thread bolt and the negative thread bolt respectively, and are placed inside the two supporting steel beams respectively.

5. The adjustable back rib for reinforcing a double-column expansion joint template according to claim 4, characterized in that, The C-shaped steel beam has a grid cavity in the C-groove corresponding to the position of the adjusting bolt group, which is used to place the corresponding adjusting nut.

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