Joint-cutting-free partition plate structure for pavement slab construction
By using a no-cutting partition structure in the construction of airport pavement panels, the problem of cutting joints between new and old concrete pavement panels was solved, achieving high-quality construction results, reducing costs and the risk of water seepage, and improving the controllability and durability of construction.
Patent Information
- Application Number
- CN202422935195.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2034-11-28
AI Technical Summary
In the existing technology, after the repair of airport concrete pavement panels, the joint cutting between the old and new concrete pavement surfaces needs to be completed within the strength range of 6 to 8 MPa. The construction time is short, making it difficult to guarantee the quality of the joint cutting, and there is also the problem of inaccurate cutting of the boundary between the old and new concrete.
The system employs a no-cutting partition structure, including an upper partition and a lower partition. Utilizing a snap-fit joint and snap-fit interface design made of elastic material, the partition is laid before concrete pouring, avoiding the cutting process. Only the upper partition needs to be removed later, reducing construction difficulty and cost.
It improves the quality of joint cutting, reduces labor and equipment costs, avoids adhesion between new and old concrete, reduces the risk of rainwater seepage, and enhances the controllability and durability of construction.
Smart Images
Figure CN223688726U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to airport pavement slab construction technical field, concretely is a pavement slab construction cuts the joint free baffle structure. BACKGROUND
[0002] In recent years, with our country a large number of infrastructure has been put into use for more than 10 years, these infrastructure begins to age, damage, therefore, our country builds mainly, with maintenance as auxiliary " big infrastructure era " into with maintenance as auxiliary, builds mainly " big maintenance era ". Among them, the airport concrete pavement slab under the repeated action of wheel load, crack, crack further produces pit, in this process, small particles (airport produces FOD) can be inhaled into the engine of the aircraft, and the engine is damaged, so the concrete pavement slab of airport needs timely repair.
[0003] After the repair of the airport pavement slab, due to the difference between the strength, thermal expansion coefficient and other properties of new and old concrete pavements, under the working condition of repeated rolling of wheel load or thermal expansion and cold contraction of weather change, micro cracks are easily generated at the repair interface or the new pavement is expanded to damage the original pavement, which reduces the durability of the airport pavement and increases the safety hazard (FOD). In order to prolong and improve the durability of the patch and the original concrete. In the prior art, before the shrinkage cracks of the patch concrete reach a certain strength, a joint cutter is used to cut between the patch and the existing pavement, and then a joint sealing material is used for joint sealing, so that the repaired pavement and the original concrete leave a deformation space, to avoid mutual extrusion.
[0004] The above technology can solve the problem of extrusion force between new and old pavement slabs, but the joint cutting construction needs to be carried out within a certain strength range (6-8MPa) of concrete; if the joint cutting is too early, the edge damage of the joint will be caused by insufficient concrete strength, and the edge stone is easy to loosen; if the joint cutting is too late, the concrete slab will be over-coagulated, resulting in shrinkage cracks. Therefore, the time of joint cutting is relatively urgent, and the construction speed is very fast, and the fast construction makes it difficult to accurately cut the boundary line of new and old concrete (especially small size patch), so that the quality and quantity cannot be guaranteed. UTILITY MODEL CONTENTS
[0005] The utility model aims at providing a pavement slab construction joint cutting free baffle structure, to solve the technical problem that the airport concrete pavement slab joint cutting construction needs to be completed within 6-8MPa strength interval in the prior art mentioned above, the construction time is short, and the joint cutting quality cannot be guaranteed.
[0006] To solve the above problems, the technical scheme adopted by the utility model is as follows: a pavement slab construction joint-free baffle structure, comprising upper and lower baffles, the lower end of the upper baffle is provided with an elastic material clamping joint, and the upper end of the lower baffle is provided with a clamping interface capable of clamping the clamping joint.
[0007] The beneficial effects of the embodiment are that:
[0008] 1. The thermal expansion coefficients of the new and old pavement slabs after the airport pavement slab is repaired are different, and under the changes of environmental temperature and humidity, extrusion force is generated between the two, micro cracks are generated at the repair interface, the original pavement is damaged, the prior art cuts a gap between the two to avoid extrusion, but the joint cutting construction needs to be completed within the interval of 6-8 MPa of the setting strength of the concrete, the construction time is short, and the joint cutting quality cannot be guaranteed, the joint cutting is prone to be skewed and the edges are not clean (small pieces attached are easily peeled off: new concrete pieces are attached to the old concrete or old concrete pieces are attached to the new concrete), and the joint-free baffle is designed in the application, the joint-free baffle only needs to be laid in advance before pouring the concrete, and the joint-free baffle is pulled out after pouring is completed, so that the joint cutting quality is good, and the small piece attachment phenomenon is not prone to occur.
[0009] 2. The joint cutting needs to be grouted with joint sealing material in the later period, the integral baffle is designed, the baffle is difficult to pull out in the later period, the space for grouting in the later period is large, and much joint sealing material is needed, the upper and lower baffles are designed in the application, the lower baffle is made of a material similar to the joint sealing material, and in the later period, only the upper baffle needs to be pulled out, and the lower baffle is in the joint cutting, so that the difficulty of pulling out is reduced, and the grouting construction in the later period is also reduced.
[0010] 3. The joint cutting needs to be constructed by using special equipment by manual operation, the cutting process is avoided in the application, and labor cost and equipment procurement cost are saved.
[0011] 4. The lower baffle in the application is part of the joint sealing material, and the upper baffle can be repeatedly used, so that the cost is low.
[0012] Further, the clamping joint comprises a tenon with the lower part being narrow and the upper part being wide, a plurality of horizontal clamping transverse plates are arranged on the tenon, the clamping interface comprises a mortise with the upper part being wide and the lower part being narrow, and a transverse clamping groove capable of accommodating the clamping transverse plates is arranged on the mortise. Since the tenon of the upper baffle is narrow at the lower part and wide at the upper part, and the mortise of the lower baffle is wide at the upper part and narrow at the lower part, the space becomes larger and larger when the upper baffle is pulled out upward, and the difficulty of pulling out is small.
[0013] Further, the upper end of the upper baffle is provided with an edge guard, and a chamfer is arranged at the connection between the edge guard and the upper baffle. The right-angle joint wall is in a tensile state under the action of load, and is prone to breakage and other diseases; chamfering the right-angle joint can avoid this problem, and the prior art performs chamfering construction after the concrete is completely set, but the application can complete the chamfering at one time, and secondary construction is avoided.
[0014] Furthermore, the tenon is a continuous, single-piece structure along the lower end of the upper partition, and the mortise is a continuous groove along the upper end of the lower partition. The continuous, single-piece structure provides better connection stability compared to using several discontinuous tenons and mortises.
[0015] Furthermore, the width of the upper partition is smaller than the width of the lower partition. Because the upper partition is narrower than the lower partition, after pouring, the cut creates two narrower gaps at the top and wider gap at the bottom. Later, when rainwater seeps downwards along the cut, the inconsistent widths of the two gaps create a cross-section, intercepting the seeping rainwater. Since the lower partition of the lower gap is not pulled out, the rainwater flows to the upper surface of the lower partition, and from the upper right end into the mortise groove at the upper end of the lower partition, evaporating after the weather clears. This design transforms the original snap-fit mortise into a drainage channel, preventing rainwater from seeping downwards and corroding the foundation beneath the airport pavement, resulting in better waterproofing.
[0016] Furthermore, both the snap-fit horizontal plate and the horizontal snap-fit groove are provided in two sets. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of this utility model.
[0018] Figure 2 for Figure 1 Front view. Detailed Implementation
[0019] The following detailed description illustrates the specific implementation method:
[0020] The reference numerals in the accompanying drawings include: upper partition 1, tenon 11, snap-fit horizontal plate 111, edge protector 12, edge protector chamfer 121, lower partition 2, mortise 21, and horizontal slot 211.
[0021] Implementation, for example, attached Figures 1-2 As shown: A partition structure for paving panel construction without cutting joints includes an upper partition 1 and a lower partition 2. Both the upper partition 1 and the lower partition 2 are boards, but made of different materials. The upper partition 1 is made of rubber, and the lower partition 2 is made of foam board. A snap-fit joint is provided at the lower end of the upper partition 1. The snap-fit joint includes a tenon 11. The tenon 11 is an isosceles trapezoidal structure that is narrower at the bottom and wider at the top. A snap-fit horizontal plate 111 is provided on the tenon 11. In this embodiment, two sets of snap-fit horizontal plates 111 are provided. The distance from the end face of all snap-fit horizontal plates 111 to the central axis of the upper partition 1 is the same. However, since the tenon 11 is narrower at the bottom and wider at the top, its protruding length from the tenon 11 is inconsistent.
[0022] The upper end of the lower partition plate 2 is provided with a clamping port, which comprises a mortise 21, which is also an isosceles trapezoidal structure with a wide upper end and a narrow lower end, and has the same size as the tenon 11, so that the tenon 11 can be clamped into the mortise 21. The mortise 21 is provided with a transverse clamping groove 211 for accommodating the clamping transverse plate 111, and the transverse clamping groove 211 corresponds to the clamping transverse plate 111 in shape and size. Therefore, when the tenon 11 is at the same height as the mortise 21, the clamping transverse plate 111 can be horizontally pushed into the transverse clamping groove 211 to complete clamping.
[0023] The tenon 11 is a continuous structure along the lower end of the upper partition plate 1, and the mortise 21 is a continuous groove body along the upper end of the lower partition plate 2. The width of the upper partition plate 1 is smaller than the width of the lower partition plate 2, and after pouring, a cut joint with a smaller upper width and a larger lower width is formed.
[0024] The upper end of the upper partition plate 1 is provided with a guard 12, the upper top surface of which is flush with the surface of the designed height of the poured concrete, which can be used as a reference line for leveling during leveling construction. The length of the upper partition plate 1 is greater than the length of the cut joint, and after installation, one end of the upper partition plate 1 extends out of the boundary of the poured pavement slab. When the upper partition plate is pulled out later, the part that extends out can be used as a handle to pull the upper partition plate out as a whole. The guard chamfer 121 is arranged at the connection position of the guard 12 and the main body of the upper partition plate 1, so that the pavement slab after pouring has a self-cut joint, avoiding chamfer construction later.
[0025] The above is only an embodiment of the present application, and the specific structure and characteristics of the scheme are not described in detail. It should be noted that for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.
Claims
1. A construction joint free barrier structure for pavement slabs, characterized in that: The upper partition plate is provided with an elastic material clamping joint at the lower end, and the lower partition plate is provided with a clamping interface capable of clamping with the clamping joint.
2. The pavement panel construction joint-free spacer structure according to claim 1, characterized by: The clamping joint comprises a tenon with a narrow lower part and a wide upper part, and the tenon is provided with a plurality of horizontal clamping plates.
3. The jointless separator structure for pavement slab construction according to claim 1, characterized by: The upper end of the upper partition plate is provided with a guard edge, and the connection between the guard edge and the upper partition plate is provided with a guard edge chamfer.
4. The jointless separator structure for pavement slab construction according to claim 2, characterized by: The tenon is a continuous whole structure along the lower end of the upper partition plate, and the mortise is a continuous groove body along the upper end of the lower partition plate.
5. The jointless deck panel construction of claim 4, wherein: The width of the upper partition plate is less than the width of the lower partition plate.
6. The jointless deck panel construction of claim 5, wherein: Both the clamping plates and the transverse clamping grooves are provided with two groups.