A kind of control shear wall and the thickness of reinforcing bar protection layer tie structure

Abstract

The utility model discloses a kind of pull bar structures of controlling shear wall and reinforcing layer thickness, belong to building construction technical field, including two nut covers, two the nut cover is respectively threaded and set on two threaded sections, two the nut cover is connected with clamping block by two symmetrically arranged connecting pieces, the bottom of two The clamping block is provided with the clamping groove for being used to horizontally reinforcing bar clamping;The utility model can be completed to the pull bar positioning of horizontal reinforcing bar by the clamping block of being set on inner screw rod, so that clamping block position is not easy to shift, the positioning stability of reinforcing bar is strong, can effectively control positioning to reinforcing layer thickness.Meanwhile, after formwork is erected, reinforcing bar under hidden can be found in time after deformation, further guarantee construction quality.In addition, entire positioning operation is simple, need not excessive binding, effectively improve construction efficiency, and can reduce construction cost.

Description

Technical Field

[0001] This utility model belongs to the field of building construction technology, and in particular relates to a tie structure for controlling the thickness of shear walls and steel reinforcement protective layers. Background Technology

[0002] In building structural components, shear walls are crucial vertical load-bearing members. During construction, excessive or insufficient deviation in the thickness of the shear wall section can reduce its horizontal load-bearing capacity, thus affecting the overall stability of the building structure and increasing the risk of damage under external forces such as earthquakes. The concrete cover for reinforcing steel is vital to the structure's durability, directly impacting the building's maintenance cycle and even its lifespan. However, it is often a weak point that is easily overlooked in actual construction, especially the concrete cover of shear walls.

[0003] As a concealed project, steel reinforcement is subject to limitations and deficiencies in quality control using traditional methods. The protective layer of shear wall reinforcement cannot be monitored in real time, leading to non-compliance with specifications after the reinforcement is concealed. This can even result in serious misalignment of column longitudinal reinforcement after concrete pouring, requiring remedial measures such as chiseling the floor, bending and adjusting, or installing additional reinforcement. This not only creates potential structural quality issues but also generates significant amounts of unnecessary rework and waste.

[0004] Currently, the main methods for controlling the concrete cover of reinforcing bars are plastic clips, mortar spacers with wire ties, and mortar or concrete internal supports. When using plastic clips, they are susceptible to displacement during concrete pouring due to impact or concrete flow, leading to inconsistent cover thickness. Furthermore, plastic clips have relatively low mechanical strength and may deform or break under heavy loads or concrete pressure, causing deviations in cover thickness. Their durability is also poor; prolonged exposure to damp environments or sunlight can cause aging, resulting in decreased strength or even failure. When using mortar spacers with wire ties, these spacers are prone to detachment during concrete pouring due to vibration or impact, causing changes in the rebar's position and substandard cover thickness. Precise control of the spacer's position is also difficult, especially in large-area construction, where ensuring accurate placement of each spacer is challenging. Furthermore, using plastic clips and mortar spacers with binding wire to control the concrete cover requires a large number of clips and spacers. During construction, human factors can easily lead to insufficient numbers of clips and spacers, resulting in excessive deviations in the concrete cover. When using mortar or concrete internal bracing to control the shear wall section and the thickness of the concrete cover, the internal bracing has low structural strength and can break during concrete pouring due to vibration, thus failing to guarantee the thickness of the shear wall and the concrete cover.

[0005] Furthermore, a search revealed Chinese patent CN 206844488 U, which discloses a tie structure capable of controlling the thickness of shear walls and the thickness of the concrete cover for reinforcing bars. This structure includes shear wall thickness control bars, reinforcing bar positioning plates, concrete cover control plates, and sealing bars. Each end of the shear wall thickness control bar has a concrete cover control plate. Two reinforcing bar positioning plates are positioned on the shear wall thickness control bar between the two concrete cover control plates. Sealing bars are located on the upper surfaces of the two reinforcing bar positioning plates and the concrete cover control plates, away from the shear wall thickness control bars. The shear wall thickness control bars are parallel to the sealing bars. This internally controlled process suffers from difficulties in binding, resulting in insecure binding, easy displacement, difficulty in controlling the quality of the concrete cover, slow manual binding speed, low efficiency, high labor costs, and inability to monitor the concrete cover status in real time after the reinforcing bars are concealed. Therefore, we propose a tie structure for controlling the thickness of shear walls and the concrete cover for reinforcing bars to solve the aforementioned problems. Summary of the Invention

[0006] In view of this, in order to solve the problems of existing internal control technology for steel reinforcement protective layer, where steel reinforcement is a concealed project and the position of steel reinforcement and the state of protective layer cannot be controlled when the steel reinforcement is completed and the next process begins, and there are also difficulties in binding construction, such as insecure binding, easy displacement, difficulty in controlling the quality of protective layer, slow manual binding speed, low efficiency, high man-day consumption, and high construction cost, this utility model provides a tie structure for controlling the thickness of shear wall and steel reinforcement protective layer.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a tie rod structure for the thickness of the concrete cover of reinforcing bars, comprising a three-section tie rod, wherein the three-section tie rod consists of an inner threaded rod and two symmetrically arranged outer threaded rods. The inner threaded rod includes a smooth section in the middle and two threaded sections integrally formed with both ends of the smooth section. A water-stop plate is welded to the smooth section, and two nut sleeves are also included. The two nut sleeves are respectively threaded onto the two threaded sections. Each of the two nut sleeves is connected to a locking block by two symmetrically arranged connectors. The bottom of each locking block is provided with a locking groove for locking horizontal reinforcing bars. By using the two locking blocks to position and lock the horizontal reinforcing bars distributed on both sides, a tie rod effect can be achieved, and the thickness of the concrete cover of reinforcing bars can be accurately positioned.

[0008] Furthermore, the connector includes a collar sleeved on the threaded section, and each of the nut sleeves has a protruding ring integrally provided at its far ends to be fitted with the collar, and the bottom end of the collar is integrally provided with a support block that is fixedly connected to the locking block.

[0009] Furthermore, two positioning slots are symmetrically formed on the top of the card block, and the support block is adapted to be inserted into the positioning slots and fixedly connected to the card block by fixing screws.

[0010] Furthermore, the slot is adapted to be connected to the horizontal reinforcing bar.

[0011] Furthermore, the card block is made of carbon steel.

[0012] Furthermore, the lengths of the smooth segment and the two threaded segments are equally divided, each being one-third of the overall length of the internal screw.

[0013] A controllable shear wall is formed by casting concrete after positioning horizontal reinforcing bars with two locking blocks, and the internal threaded rod, waterstop plate, nut sleeve, connector and locking blocks are all embedded in the wall body.

[0014] The embodiments of this utility model have the following beneficial effects: 1. By setting a three-section tie rod and symmetrically setting two locking blocks on the inner tie rod, the horizontal reinforcing bars distributed on both sides can be positioned and locked by the two locking blocks, thereby effectively controlling the thickness of the reinforcing bar protective layer and improving construction accuracy.

[0015] 2. By using two clips to position and connect the reinforcing bars, it is easy to check the deformation of the reinforcing bars after the formwork is erected, so as to provide targeted remediation, avoid a lot of unnecessary rework and waste, and improve the construction quality of the wall.

[0016] 3. By setting adjustable nut sleeves on the threaded sections at both ends of the internal screw, the distance between the two locking blocks can be adjusted by adjusting the nut sleeves. This not only facilitates the positioning of the reinforcing bars, but also adapts to different construction needs, which is beneficial for construction of reinforcing bars in different environmental categories, thus improving the overall practicality.

[0017] 4. The nut sleeve and the clamp are detachably connected by a connector, which facilitates assembly and use, and is simple to operate, thus enabling better production and transportation.

[0018] 5. By setting the locking block on the tie rod, the reinforcement of the steel bars and the support and fixation of the formwork can be carried out simultaneously, saving operation steps, effectively saving labor, improving quality, saving construction time, reducing concrete waste, and lowering construction costs.

[0019] This invention utilizes two adjustable locking blocks on the internal threaded rod to position the horizontal reinforcing bars. Furthermore, the locking blocks are positioned firmly after the threaded rod is aligned with the formwork, ensuring stable bar positioning and effective control over the concrete cover thickness. Additionally, after the formwork is erected, any deformation of the concealed reinforcing bars can be detected promptly, further guaranteeing construction quality. Moreover, the entire positioning operation is simple, requiring no excessive binding, effectively improving construction efficiency and reducing costs.

[0020] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the overall structure of a tie bar structure with a thick protective layer for reinforcing bars according to this utility model; Figure 2 for Figure 1 Overall structural breakdown diagram; Figure 3 An exploded view of the connection structure between the nut sleeve and the retaining block; Figure 4 An exploded view of the connection structure between the nut sleeve and the connector; Figure 5 This is a schematic diagram of the construction and installation structure between the tie rod structure and the reinforcing steel.

[0022] In the diagram: 10. Three-section tie rod; 101. Internal threaded rod; 1011. Smooth section; 1012. Threaded section; 102. External threaded rod; 20. Waterstop plate; 30. Conical nut; 40. Nut sleeve; 401. Convex ring; 50. Connector; 501. Collar; 502. Support block; 5021. Threaded hole; 60. Locking block; 601. Locking groove; 602. Positioning groove; 603. Through hole; 70. Fixing screw; 80. Mountain-shaped clip; 90. Locking nut. Detailed Implementation

[0023] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this utility model. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0024] Example 1: See Figure 1 , Figure 2 and Figure 5 This embodiment provides a tie rod structure for adjusting the thickness of the reinforcing bar protective layer, comprising a three-section tie rod 10 consisting of an inner threaded rod 101 and two symmetrically arranged outer threaded rods 102. The inner threaded rod 101 can be fully threaded or double-threaded, preferably double-threaded, while both outer threaded rods 102 are fully threaded. The inner threaded rod 101 includes a smooth section 1011 in the middle and two threaded sections 1012 integrally formed with both ends of the smooth section 1011. A waterstop 20 is welded to the smooth section 1011, and the waterstop 20 is preferably located in the middle of the smooth section 1011, but there are no specific requirements for the welding position of the waterstop 20. A conical nut 30 is threaded to the end of each of the two threaded sections 1012 furthest from the smooth section 1011, and the other end of the conical nut 30 is threaded to the outer threaded rod 102, thus forming the entire tie rod. In use, the entire three-section tie rod 10 is passed through the rebar area and the formwork on both sides, so that the ends of the two outer tie rods 102 that are far apart pass through the corresponding formwork and extend outwards. At the same time, the large-diameter ends of the two conical nuts 30 abut against the inner side of the formwork, thereby achieving a sealing effect and facilitating subsequent pouring. After the formwork is erected, square timber secondary joists are erected vertically at equal intervals on the outer side of the formwork, and then horizontal steel pipes are used to reinforce and support the joists and formwork. At the ends of the two outer tie rods 102 that extend to the outer side of the formwork, a mountain-shaped clamp 80 is threaded through them, and a locking nut 90 is threaded onto each of the two outer tie rods 102 to complete the positioning connection of the mountain-shaped clamp 80, thereby completing the positioning and reinforcement of the joists and formwork.

[0025] See Figures 1-4The tie rod structure also includes two nut sleeves 40, which are threaded onto two threaded sections 1012 respectively. Each nut sleeve 40 has a protruding ring 401 integrally formed at its far end, and the protruding ring 401 has a connecting member 50 for connecting the locking block 60. The connecting member 50 includes an integrally formed collar 501 and a support block 502. The collar 501 passes through the threaded section 1012 and is simultaneously fitted onto the protruding ring 401, allowing the collar 501 to rotate freely on the protruding ring 401. The support block 502 extends downward and is fixedly connected to the locking block 60. When the nut sleeve 40 is rotated to move on the threaded section 1012, the locking block 60 can be moved back and forth via the connecting member 50, but it will not cause the locking block 60 to rotate synchronously with the nut sleeve 40. This ensures that the two locking blocks 60 are in a vertically downward position regardless of the position of the two nut sleeves 40 on the two threaded sections 1012, thus facilitating better control and adjustment. The bottom of the locking block 60 has a slot 601 for fitting and engaging horizontal reinforcing bars. By rotating the nut sleeve 40, the distance between the two locking blocks 60 is adjusted so that the distance between the centers of the two slots 601 matches the center distance between the two horizontal reinforcing bars. Then, the top of the horizontal reinforcing bars is engaged through the slots 601. This not only provides tie-in positioning for the horizontal reinforcing bars distributed on both sides, effectively controlling the spacing between the horizontal reinforcing bars and preventing bending of the reinforcing bars during pouring, thus ensuring the quality of the wall pouring, but also provides preliminary support and positioning for the entire three-section tie rod 10 after the reinforcement is tied and fixed. To ensure stable positioning of the reinforcing bars, the locking block 60 is made of metal, preferably carbon steel, to ensure the hardness of the locking block 60, guarantee the stability of the tie rod, and prevent damage or movement during subsequent pouring.

[0026] See Figure 2 To ensure proper adjustment of the locking block 60 position, the lengths of the smooth section 1011 and the two threaded sections 1012 are equally divided, each set to one-third of the overall length of the inner thread 101. This design ensures proper adjustment of the locking block 60 position to meet the positioning requirements of horizontal rebar spacing. It also allows for a wider adjustment range to adapt to different wall design requirements, facilitating construction of rebar in various environmental conditions and improving overall practicality.

[0027] This invention can be used in the field of tie-bar structures for controlling the thickness of the concrete cover of shear walls, and can also be applied to other fields of this invention.

[0028] Example 2: This example is a further improvement on the previous example: see [link / reference] Figures 1-4The top of the locking block 60 has two symmetrically arranged positioning grooves 602. The support block 502 extends downward and is fitted into the positioning groove 602. A threaded hole 5021 is provided on the side of the support block 502 that extends into the positioning groove 602. The opposite sides of the locking blocks 60 each have through holes 603 that communicate with the corresponding positioning groove 602, and the through holes 603 correspond to the threaded holes 5021. The support block 502 and the locking block 60 are fixedly connected by fixing screws 70. The locking blocks 60 can be pre-assembled in the factory and then transported to the construction site, or the components can be packaged and transported to the construction site and then assembled on site. The method used can be arranged according to the construction plan. During assembly, one connector 50 can be first fitted onto the threaded section 1012, followed by screwing on the nut sleeve 40. After screwing the nut sleeve 40 to a certain position, the other connector 50 can be fitted on as well, with the collars 501 on both connectors 50 respectively positioned on the protruding rings 401 at both ends of the nut sleeve 40. Next, the two positioning slots 602 of the locking block 60 are aligned with the two support blocks 502 and inserted, and finally secured with the fixing screws 70. Alternatively, the two connectors 50 can be positioned on the protruding rings 401 first, and the locking block 60 can be secured with the fixing screws 70 before screwing the assembled nut sleeve 40 and locking block 60 onto the threaded section 1012. While rotating the nut sleeve 40 for movement, the locking block 60 can also be moved synchronously via the connector 50 to achieve position adjustment.

[0029] During the adjustment of the spacing between the two locking blocks 60, positioning can be achieved using a ruler. After adjustment, the locking blocks 60 are engaged at the top of the horizontal reinforcing bars, providing initial support for the entire three-section tie rod 10. Next, the inner tie rod 101 is tied and fixed to the reinforcing bars. Then, the formwork and secondary timber joists are installed, and the conical nut 30 is adjusted to ensure a tight seal with the formwork. The horizontal steel pipe is positioned using the U-shaped locking block 80 and the locking nut 90, completing the support and fixation of the formwork and secondary timber joists, as well as the fixation of the three-section tie rod 10. Finally, concrete is poured. After the concrete has dried to a certain extent, the U-shaped locking block 80 is removed, followed by the removal of the horizontal steel pipe and secondary timber joists. Then, the outer tie rod 102 and conical nut 30 are removed (this component can be reused). The formwork is then removed, and finally, the holes are filled, resulting in a shear wall with a controllable reinforcing bar protective layer thickness.

[0030] It is worth noting that after positioning the three-section tie rod 10 between itself and the formwork, the locking block 60 also achieves stable locking of the horizontal reinforcing bars. After the formwork is erected, the reinforcing bar skeleton is located inside the two formwork panels and is in a hidden state. When the concrete is poured, if the reinforcing bars are severely misaligned, the tie rods will shift, allowing for timely detection and targeted remediation, thus avoiding a large amount of unnecessary rework and waste. This tie rod structure has the advantages of simple operation and fast construction speed, and it is estimated that this technology can increase the construction speed by about 60%. Therefore, using this structure will make the entire construction process fast, accurate, safe, and efficient, while saving a lot of materials and labor costs, improving project quality, and achieving a qualified rate of over 90% for the thickness of the reinforcing bar protective layer. In addition, the application of this technology can better solve the technical problems of quality control of the reinforcing bar protective layer. This technology is applicable to various complex concrete constructions, saving labor, improving quality, saving construction time, reducing concrete waste, and meeting the national development requirements of "refined construction".

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A tie rod structure for the thickness of the concrete cover of reinforcing bars, comprising a three-section tie rod (10), wherein the three-section tie rod (10) consists of an inner threaded rod (101) and two symmetrically arranged outer threaded rods (102), wherein the inner threaded rod (101) includes a smooth section (1011) located in the middle and two threaded sections (1012) integrally formed with both ends of the smooth section (1011), wherein a water-stop plate (20) is welded on the smooth section (1011), characterized in that, It also includes two nut sleeves (40), which are threaded onto two threaded sections (1012). Each of the two nut sleeves (40) is connected to a locking block (60) by two symmetrically arranged connectors (50). The bottom of each locking block (60) is provided with a locking groove (601) for locking the horizontal reinforcing bars. By using the two locking blocks (60) to position and lock the horizontal reinforcing bars distributed on both sides, the effect of reinforcing bars can be achieved, and the thickness of the reinforcing bar protective layer can be accurately positioned.

2. The tie structure with varying concrete cover thickness as described in claim 1, characterized in that, The connector (50) includes a collar (501) sleeved on the threaded section (1012), and the nut sleeve (40) is integrally provided with a convex ring (401) adapted to be fitted with the collar (501) at one end away from each other. The bottom end of the collar (501) is integrally provided with a support block (502) fixedly connected to the locking block (60).

3. The tie structure with varying concrete cover thickness as described in claim 2, characterized in that, The top of the card block (60) has two symmetrical positioning slots (602). The support block (502) is adapted to be inserted into the positioning slots (602) and fixedly connected to the card block (60) by fixing screws (70).

4. A tie structure with a protective layer thickness for reinforcing bars as described in claim 1 or 3, characterized in that, The slot (601) is adapted to be connected to the horizontal reinforcing bar.

5. The tie structure with varying concrete cover thickness as described in claim 4, characterized in that, The card block (60) is made of carbon steel.

6. The tie structure with varying concrete cover thickness as described in claim 1, characterized in that, The lengths of the smooth section (1011) and the two threaded sections (1012) are equally divided, each being one-third of the overall length of the inner screw (101).

7. A method for controlling shear walls, characterized in that, The controlled shear wall is formed by casting concrete after positioning the horizontal reinforcing bars with two locking blocks (60) as described in any one of claims 1-6, and the inner threaded rod (101), waterstop plate (20), nut sleeve (40), connector (50) and locking block (60) are all embedded in the wall body.

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