Control device for arc-shaped section concrete protection layer
By combining the design of curved control steel bars and longitudinal tie ropes, the problems of insufficient protective layer control and uneven surface of curved cross-section concrete structures were solved, thereby improving construction quality and reducing costs.
Patent Information
- Application Number
- CN202423074567.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-12-13
AI Technical Summary
Traditional methods are insufficient to effectively control the thickness of the protective layer and the surface smoothness of curved concrete structures, leading to increased construction costs.
By combining arc-shaped control steel bars and longitudinal tie ropes, and through the design of pre-embedded sleeves and fixed legs, a concentric circle structure is formed to ensure the accuracy of the arc surface, and PVC pipes are used to reduce costs.
It improves the construction quality and surface smoothness of curved cross-section concrete structures and reduces construction costs.
Smart Images
Figure CN223634203U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of building construction technology, and provides a control device for arc-shaped cross-section concrete protective layer that is simple in structure, easy to operate, improves construction quality and reduces construction costs. Background Technology
[0002] To meet requirements for structural strength, stability, and aesthetics, subway stations and building designs often feature curved concrete structures on their roofs. Traditional methods for constructing curved concrete structures primarily include the steel stake method and the string line method. The steel stake method involves placing steel stakes at equal intervals, relying on a single point to control the elevation, resulting in low precision. The string line method sets control points at both ends of the poured concrete, using a longitudinal line to control the elevation. However, it only provides longitudinal positioning and cannot establish positioning lines in the transverse curved direction, leading to even lower precision. This method cannot meet the construction requirements for structures with high standards for concrete reinforcement cover and appearance. In particular, if the concrete reinforcement cover fails to meet the acceptance requirements, rework is necessary, increasing construction costs.
[0003] How to effectively control the protective layer thickness of curved concrete structures, improve surface smoothness, and reduce construction costs has always been a difficult technical problem for those skilled in the art. Utility Model Content
[0004] In view of this, the purpose of this utility model is to provide a control device for the arc-shaped cross-section concrete protective layer that is simple in structure, easy to operate, improves construction quality, and reduces construction costs.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] This utility model provides a control device for the concrete protective layer of an arc-shaped cross section, wherein: it includes an arc-shaped control steel bar for forming a concentric circle structure with the transverse arc-shaped concrete surface of the arc-shaped concrete block, and at least three fixed legs integrally welded on the arc-shaped control steel bar, the lower end of the fixed legs being inserted into a pre-embedded sleeve, the pre-embedded sleeve being used to be pre-embedded in the arc-shaped concrete block.
[0007] The arc-shaped control reinforcement consists of at least two bars, and multiple longitudinal tension ropes are provided between two adjacent arc-shaped control reinforcement bars. The two ends of the longitudinal tension ropes are respectively tied to the two arc-shaped control reinforcement bars.
[0008] In use, the longitudinal tension rope is tensioned by adjusting the distance between the fixed legs on the two arc-shaped control steel bars. All the tensioned longitudinal tension ropes form an arc surface with the same arc as the arc of the arc-shaped control steel bars.
[0009] To ensure the position accuracy between the two arc-shaped control steel bars and the elevation accuracy of the arc-shaped control steel bars, in the above scheme, further, the wood wedge is arranged between the embedded sleeve and the fixed leg.
[0010] To ensure the installation stability of the embedded sleeve, in the above scheme, further, the embedded sleeve is tied on the upper main reinforcement and / or the lower main reinforcement of the arc-shaped concrete block through the steel wire.
[0011] To reduce the use cost of the embedded sleeve, in the above scheme, further, the embedded sleeve is a PVC pipe.
[0012] The utility model discloses the beneficial effect is: simple structure, easy manufacturing, convenient operation, low cost.Effectively solve the control of arc section concrete block's protection layer deficiency, surface uneven problem, improve the construction quality, reduce the construction cost. BRIEF DESCRIPTION OF DRAWINGS
[0013] In order to make the purpose, technical scheme and advantage of the utility model more clearly, the utility model will be preferred in the following detailed description with the drawings, wherein:
[0014] Figure 1 It is the structure schematic diagram of the front direction of the utility model;
[0015] Figure 2 It is the three-dimensional structure schematic diagram of the utility model;
[0016] Figure 3 It is Figure 2 It is the enlarged structure schematic diagram of E in the middle;
[0017] Figure 4 It is the structure schematic diagram of the utility model when not being separated from the arc-shaped concrete block;
[0018] The drawings are as follows: 1, embedded sleeve;2, fixed leg;3, arc-shaped control steel bar;4, longitudinal pull rope;5, arc-shaped concrete block;6, wood wedge;7, upper main reinforcement;8, lower main reinforcement. DETAILED DESCRIPTION
[0019] The utility model will be further explained in the following with specific implementation. Wherein, the drawings are only for example explanation, show only the schematic diagram, and cannot be understood as the limitation to the patent of the utility model;In order to better explain the embodiment of the utility model, some components of the drawings can be omitted, enlarged or reduced, and do not represent the size of actual product;For the person skilled in the art, it is understandable that some known structures and their description in the drawings can be omitted.
[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0021] The present invention will be further described in detail below with reference to the accompanying drawings.
[0022] like Figures 1-4 As shown, this utility model provides a control device for the concrete protective layer of an arc-shaped cross section, which includes an arc-shaped control steel bar 3 for forming a concentric circle structure with the transverse arc-shaped concrete surface of the arc-shaped concrete block 5. At least three fixed support legs 2 are welded to the arc-shaped control steel bar 3 and are integral with it. The lower end of the fixed support leg 2 is inserted into the pre-embedded sleeve 1, which is used to be pre-embedded in the arc-shaped concrete block 5.
[0023] There are at least two arc-shaped control steel bars 3, and multiple longitudinal pull ropes 4 are provided between two adjacent arc-shaped control steel bars 3. The two ends of the longitudinal pull ropes 4 are respectively tied to the two arc-shaped control steel bars 3.
[0024] In use, the longitudinal tension ropes 4 are tensioned by adjusting the distance between the fixed legs 2 on the two arc-shaped control reinforcing bars 3. All tensioned longitudinal tension ropes 4 form an integral arc surface with the same curvature as the arc-shaped control reinforcing bars 3. In this embodiment, there are at least three longitudinal tension ropes 4. The outer diameter of the arc-shaped control reinforcing bars 3 effectively controls the height of the protective layer of the arc-shaped concrete block 5, and the integral formation of an arc surface with the same curvature as the arc-shaped control reinforcing bars 3 after tensioning effectively controls the flatness of the outer surface of the protective layer of the arc-shaped concrete block 5.
[0025] To ensure the positional accuracy between the two arc-shaped control steel bars 3 and the elevation accuracy of the arc-shaped control steel bars 3, in the above embodiment, preferably, a wooden wedge 6 is provided between the pre-embedded sleeve 1 and the fixed support leg 2.
[0026] To ensure the stability of the pre-embedded sleeve 1, in the above embodiment, preferably, the pre-embedded sleeve 1 is tied to the upper main reinforcement 7 and / or lower main reinforcement 8 of the arc-shaped concrete block 5 by steel wire.
[0027] To reduce the cost of using the pre-embedded sleeve 1, in the above embodiment, preferably, the pre-embedded sleeve 1 is a PVC pipe.
[0028] All the components in the above embodiments are conventional market products.
[0029] The control steps of the scheme are as follows:
[0030] 1) According to the design requirements, the upper main reinforcement 7 and the lower main reinforcement 8 are bound into an arc-shaped reinforcement framework by binding steel wires.
[0031] 2) Three embedded sleeves 1 are arranged at the same section position of the arc-shaped reinforcement framework, the embedded sleeves 1 are tied to the upper main reinforcement 7 and / or the lower main reinforcement 8 by binding steel wires, the lower end of the embedded sleeves 1 is flush with the lower main reinforcement 8, and the upper end of the embedded sleeves 1 is below the upper main reinforcement 7. The embedded sleeve 1 at the middle position of the three embedded sleeves 1 at the same side surface of the arc-shaped reinforcement framework is at the highest point of the arc-shaped section of the arc-shaped reinforcement framework, and the other two embedded sleeves of the three embedded sleeves 1 at the same side surface of the arc-shaped reinforcement framework are at the lowest points of the two ends of the arc-shaped section of the arc-shaped reinforcement framework.
[0032] 3) At least two arc-shaped control reinforcements 3 are inserted into the embedded sleeves 1 at the same section position through the fixed legs 2, and the longitudinal spacing between the two adjacent arc-shaped control reinforcements 3 is 2m.
[0033] 4) The fixed legs 2 are reinforced by wooden wedges 6 to avoid the movement of the fixed legs 2 during construction, which reduces the control accuracy.
[0034] 5) The longitudinal pull ropes 4 are arranged symmetrically from the middle to the two ends, starting from the fixed legs 2 at the top end of the arc-shaped section.
[0035] 6) The concrete is poured, and after pouring is completed, the wooden wedges 6, the longitudinal pull lines 4 and the fixed legs 2 integrated with the arc-shaped control reinforcements 3 are removed.
[0036] 7) The embedded sleeves 1 are sealed by cement mortar.
[0037] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model and are not limited, although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the utility model can be modified or replaced equivalently without departing from the purpose and scope of the technical solutions, and all should be covered in the scope of the claims of the utility model.
Claims
1. A control device for the concrete protective layer of an arc-shaped cross-section, characterized in that: The application relates to a kind of arc-shaped control steel bars (3) for forming concentric circle structure with the transverse arc-shaped concrete surface of arc-shaped concrete block (5), at least three fixed legs (2) are welded with the arc-shaped control steel bar (3) and integrated, the lower end of the fixed leg (2) is inserted into the embedded sleeve (1) for embedding in arc-shaped concrete block (5). The arc-shaped control steel bar (3) is at least two, and a plurality of longitudinal pull ropes (4) are arranged between the two adjacent arc-shaped control steel bars (3), and the two ends of the longitudinal pull rope (4) are tied on the two arc-shaped control steel bars (3) respectively. In use, the longitudinal pull rope (4) is tensioned by adjusting the distance between the fixed legs (2) on the two arc-shaped control steel bars (3), and all the tensioned longitudinal pull ropes (4) integrally form an arc surface with the same curvature as the curvature of the arc-shaped control steel bar (3).
2. The device for controlling the concrete cover of an arc shape according to claim 1, characterized in that: The embedded sleeve (1) is provided with a wooden wedge (6) between the fixed leg (2).
3. The concrete cover control device of claim 1 or 2, wherein: The embedded sleeve (1) is tied on the upper main reinforcement (7) and / or lower main reinforcement (8) of the arc-shaped concrete block (5) by steel wire.
4. The device for controlling the concrete cover of an arc-shaped section according to claim 1 or 2, characterized in that: The embedded sleeve (1) is a PVC pipe.