A fixing mechanism for a cement concrete pavement dowel bar
By setting a steel reinforcement fixing structure at the bottom of the dowel bar, the problem of steel bar slippage caused by the instability of the dowel bar was solved, achieving higher construction stability and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- MCC SOUTHERN CITY CONSTR ENG TECH CO LTD
- Filing Date
- 2025-07-03
- Publication Date
- 2026-06-02
AI Technical Summary
The existing dowel bars are unstable during construction, causing the reinforcing bars to slip and topple, which affects the quality of concrete construction.
Multiple sets of steel reinforcement fixing structures are set at the bottom of the dowel bar, including an inverted U-shaped steel reinforcement fixing body and an inverted L-shaped branch steel reinforcement, which are fixed by binding with thin iron wire to improve the stability of the dowel bar.
This improved the stability of the dowel bar, shortened the construction time, and enhanced construction efficiency and quality.
Smart Images
Figure CN224313989U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of road engineering, and more particularly to a fixing mechanism for dowel bars in cement concrete pavement. Background Technology
[0002] Cement concrete pavement structure is a commonly used surface structure in road engineering. Dowel bars are usually installed at transverse contraction joints to meet the structural safety requirements. Dowel bars must be placed in appropriate positions according to design and specification requirements. However, in the current construction process, dowel bars are usually placed on top of reinforcing bars, but the reinforcing bars are not fixed to the underlying structure. This causes the reinforcing bars to slip and tilt during concrete pouring, which seriously affects the quality of concrete construction and leads to problems such as cracking later. Utility Model Content
[0003] One of the purposes of this application is to provide a fixing mechanism for dowel bars in cement concrete pavement, which aims to solve the problem that the existing dowel bars are unstable and will cause the reinforcing bars to slip or tilt during concrete pouring, thus seriously affecting the quality of concrete construction.
[0004] The technical solution of this application is:
[0005] A fixing mechanism for dowel bars in cement concrete pavement includes a plurality of steel reinforcement fixing structures arranged sequentially and at intervals at the bottom of the dowel bar for supporting and fixing the dowel bar. Each steel reinforcement fixing structure includes an inverted U-shaped steel reinforcement fixing body disposed within the cement concrete surface layer, with one end connected to a first inverted L-shaped branch steel reinforcement and the other end connected to a second inverted L-shaped branch steel reinforcement. The first and second inverted L-shaped branch steel reinforcements are respectively arranged at intervals in different planes of the pavement structure below the cement concrete surface layer, extending away from the steel reinforcement fixing body, and located on opposite sides of the U-shaped opening of the steel reinforcement fixing body.
[0006] As one technical solution of this application, the steel bar fixing body includes a first connecting steel bar, a second connecting steel bar and a third connecting steel bar that are vertically connected in an inverted U-shape in sequence, and the first connecting steel bar, the second connecting steel bar and the third connecting steel bar all include No. 8 steel bars.
[0007] As one technical solution of this application, the length of the second connecting steel bar is 9-11cm.
[0008] As one technical solution of this application, the heights of the first connecting steel bar and the third connecting steel bar are both half the difference between the thickness of the cement concrete surface layer and the diameter of the road dowel bar.
[0009] As one technical solution of this application, the first inverted L-shaped branch reinforcement includes a first horizontal reinforcement and a first vertical reinforcement connected vertically in sequence to form an inverted L shape, and the first vertical reinforcement is set in the road structure below the cement concrete surface layer; both the first horizontal reinforcement and the first vertical reinforcement include No. 8 steel bars.
[0010] As one technical solution of this application, the height of the first vertical steel bar is 4-6cm and the length of the first horizontal steel bar is 7-9cm.
[0011] As one technical solution of this application, the second inverted L-shaped branch reinforcement includes a second horizontal reinforcement and a second vertical reinforcement connected vertically in sequence to form an inverted L shape, and the second vertical reinforcement is set in the pavement structure below the cement concrete surface layer; both the second horizontal reinforcement and the second vertical reinforcement include No. 8 steel bars.
[0012] As one technical solution of this application, the height of the second vertical reinforcing bar is 4-6cm, and the length of the second horizontal reinforcing bar is 7-9cm.
[0013] As one technical solution of this application, the steel bar fixing structure and the road force transmission bar are fixed together by binding with thin iron wire.
[0014] The beneficial effects of this application are:
[0015] This fixing mechanism for cement concrete pavement dowel bars addresses the construction of dowel bars by modifying existing steel reinforcement supports. Multiple sets of steel reinforcement fixing structures are installed at the bottom of the dowel bars, and these structures, including inverted U-shaped steel reinforcement bodies, first inverted L-shaped branch steel reinforcements, and second inverted L-shaped branch steel reinforcements, support and fix the dowel bars. This effectively improves the stability of the dowel bar placement, reduces the time spent on dowel bar installation, increases construction efficiency and quality, and saves time and effort. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.
[0017] Figure 1 A schematic diagram of the arrangement of the fixing mechanism for the dowel bar of cement concrete pavement provided in the embodiments of this application;
[0018] Figure 2 This is a schematic diagram of a fixing mechanism for dowel bars in cement concrete pavement provided in an embodiment of this application.
[0019] Icons: 1-Reinforcing steel fixing structure; 2-Road dowel bar; 3-Road structure; 4-Cement concrete surface layer; 5-Contraction joint; 6-First connecting steel bar; 7-Second connecting steel bar; 8-Third connecting steel bar; 9-First horizontal steel bar; 10-First vertical steel bar; 11-Second horizontal steel bar; 12-Second vertical steel bar. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.
[0021] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0023] In the description of this application, it should be noted that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. They are only used to facilitate the description of this application and to simplify 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. Therefore, they should not be construed as limitations on this application.
[0024] Furthermore, in this application, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Moreover, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0025] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0026] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0027] Example:
[0028] Please refer to Figure 1 (Refer to) Figure 2 This application provides a fixing mechanism for dowel bars in cement concrete pavement, which includes a plurality of steel reinforcement fixing structures 1 arranged sequentially and at intervals at the bottom of the dowel bars 2 for supporting and fixing the dowel bars 2. The steel reinforcement fixing structures 1 are fixed to the dowel bars 2 by binding with thin iron wire. The dowel bars 2 are located at the contraction joints 5 in the cement concrete surface layer 4. The steel reinforcement fixing structure 1 includes a steel reinforcement fixing body in the shape of an inverted U. The steel reinforcement fixing body is located in the cement concrete surface layer 4 and is connected to a first inverted L-shaped branch steel reinforcement at one end and a second inverted L-shaped branch steel reinforcement at the other end. At the same time, the first inverted L-shaped branch steel reinforcement and the second inverted L-shaped branch steel reinforcement are arranged at intervals in different planes of the pavement structure 3 below the cement concrete surface layer 4, and extend away from the steel reinforcement fixing body. They are located on opposite sides of the U-shaped opening of the steel reinforcement fixing body. The first inverted L-shaped branch steel reinforcement and the second inverted L-shaped branch steel reinforcement are not on the same straight line or in the same plane, and are far apart from each other. The fixing mechanism for the dowel bar of the cement concrete pavement is designed for the construction of the dowel bar 2. By modifying the existing steel reinforcement support, the stability of the dowel bar 2 can be effectively improved, while the time spent on the arrangement of the dowel bar 2 can be shortened. The construction process is economical and simple, improving construction efficiency and quality. The mechanism is technically reasonable, economically feasible, and has achieved ideal results in actual construction applications.
[0029] Furthermore, its steel reinforcement fixing body includes a first connecting steel bar 6, a second connecting steel bar 7 and a third connecting steel bar 8 connected vertically in an inverted U-shape in sequence. The first connecting steel bar 6, the second connecting steel bar 7 and the third connecting steel bar 8 are all made of No. 8 steel bars.
[0030] It should be noted that the length of the second connecting steel bar 7 is 9-11cm; specifically, in this embodiment, the length of the second connecting steel bar 7 can be selected as 10cm.
[0031] It should be noted that the heights of the first connecting steel bar 6 and the third connecting steel bar 8 are both half the difference between the thickness of the cement concrete surface layer 4 and the diameter of the road dowel bar 2.
[0032] Furthermore, the first inverted L-shaped branch reinforcement includes a first horizontal reinforcement 9 and a first vertical reinforcement 10 connected vertically in sequence to form an inverted L shape, and the first vertical reinforcement 10 is set in the pavement structure 3 below the cement concrete surface layer 4, and the first horizontal reinforcement 9 is vertically connected to the first connecting reinforcement 6; the first horizontal reinforcement 9 and the first vertical reinforcement 10 are both made of No. 8 steel bars.
[0033] It should be noted that the height of the first vertical reinforcing bar 10 is 4-6cm, and the length of the first horizontal reinforcing bar 9 is 7-9cm; specifically, in this embodiment, the height of the first vertical reinforcing bar 10 can be selected as 5cm, and the length of the first horizontal reinforcing bar 9 can be selected as 8cm.
[0034] Furthermore, the second inverted L-shaped branch reinforcement includes a second horizontal reinforcement 11 and a second vertical reinforcement 12 connected vertically in sequence to form an inverted L shape. The second vertical reinforcement 12 is located in the pavement structure 3 below the cement concrete surface layer 4. The second horizontal reinforcement 11 is vertically connected to the third connecting reinforcement 8. Both the second horizontal reinforcement 11 and the second vertical reinforcement 12 are made of No. 8 steel bars.
[0035] It should be noted that the height of the second vertical reinforcing bar 12 is 4-6cm, and the length of the second horizontal reinforcing bar 11 is 7-9cm; specifically, in this embodiment, the height of the second vertical reinforcing bar 12 can be selected as 5cm, and the length of the second horizontal reinforcing bar 11 can be selected as 8cm.
[0036] The construction method for the fixing mechanism of the dowel bar in this cement concrete pavement is as follows:
[0037] Before construction begins, the road surface must first be cleaned.
[0038] Determine the placement and spacing of the road dowel bars 2 according to the design requirements. Drive the prefabricated steel reinforcement fixing structure 1 into the determined position, place the road dowel bars 2 on top of the steel reinforcement fixing structure 1, and tie the road dowel bars 2 to the steel reinforcement fixing structure 1 with thin iron wire.
[0039] In summary, the fixing mechanism for the dowel bar of the cement concrete pavement is designed for the construction of the dowel bar 2. By modifying the existing steel support, multiple sets of steel fixing structures 1 are set at the bottom of the dowel bar 2. The dowel bar 2 is supported and fixed by the inverted U-shaped steel fixing body, the first inverted L-shaped branch steel bars, and the second inverted L-shaped branch steel bars in the multiple sets of steel fixing structures 1. This can effectively improve the stability of the dowel bar 2, shorten the time spent on the arrangement of the dowel bar 2, improve construction efficiency and quality, and save time and effort.
[0040] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A fixing mechanism for dowel bars in cement concrete pavement, characterized in that, The system includes multiple steel reinforcement fixing structures arranged at intervals at the bottom of the road dowel bar to support and fix the road dowel bar. Each steel reinforcement fixing structure includes an inverted U-shaped steel reinforcement fixing body, which is disposed within the cement concrete surface layer and has a first inverted L-shaped branch steel reinforcement at one end and a second inverted L-shaped branch steel reinforcement at the other end. The first and second inverted L-shaped branch steel reinforcements are respectively arranged at intervals in different planes of the road structure below the cement concrete surface layer, and extend away from the steel reinforcement fixing body, and are respectively located on opposite sides of the U-shaped opening of the steel reinforcement fixing body.
2. The fixing mechanism for dowel bars in cement concrete pavement according to claim 1, characterized in that, The steel reinforcement fixing body includes a first connecting steel bar, a second connecting steel bar, and a third connecting steel bar that are vertically connected in an inverted U-shape in sequence. The first connecting steel bar, the second connecting steel bar, and the third connecting steel bar all include No. 8 steel bars.
3. The fixing mechanism for dowel bars in cement concrete pavement according to claim 2, characterized in that, The length of the second connecting steel bar is 9-11cm.
4. The fixing mechanism for dowel bars in cement concrete pavement according to claim 2, characterized in that, The heights of the first connecting steel bar and the third connecting steel bar are both half the difference between the thickness of the cement concrete surface layer and the diameter of the road dowel bar.
5. The fixing mechanism for dowel bars in cement concrete pavement according to claim 1, characterized in that, The first inverted L-shaped branch reinforcement includes a first horizontal reinforcement and a first vertical reinforcement connected vertically in sequence to form an inverted L shape, and the first vertical reinforcement is set in the pavement structure below the cement concrete surface layer; both the first horizontal reinforcement and the first vertical reinforcement include No. 8 steel bars.
6. The fixing mechanism for dowel bars in cement concrete pavement according to claim 5, characterized in that, The height of the first vertical reinforcing bar is 4-6cm, and the length of the first horizontal reinforcing bar is 7-9cm.
7. The fixing mechanism for dowel bars in cement concrete pavement according to claim 1, characterized in that, The second inverted L-shaped branch reinforcement includes a second horizontal reinforcement and a second vertical reinforcement connected vertically in sequence to form an inverted L shape, and the second vertical reinforcement is set in the pavement structure below the cement concrete surface layer; both the second horizontal reinforcement and the second vertical reinforcement include No. 8 steel bars.
8. The fixing mechanism for dowel bars in cement concrete pavement according to claim 7, characterized in that, The height of the second vertical reinforcing bar is 4-6cm, and the length of the second horizontal reinforcing bar is 7-9cm.
9. The fixing mechanism for dowel bars in cement concrete pavement according to claim 1, characterized in that, The steel reinforcement fixing structure is fixed to the road surface force transmission bar by binding with thin iron wire.