A long-term performance networking observation assembled cement concrete pavement panel structure

Abstract

The application discloses a kind of long-term performance networking observation assembly type cement concrete pavement panel structure, the top of roadbed is fixedly provided with several parallel strip-shaped protrusions, concrete panel is rectangular structure, roadbed is fixedly provided with clamping fixed stake at the corner of each concrete panel, two prefabricated steels inside concrete panel are arranged along diagonal line, and the two ends of prefabricated steel are respectively detachably connected with its adjacent clamping fixed stake;Any two adjacent concrete panels are connected with clamping connection component;Roadbed, concrete panel, clamping connection component and prefabricated steel are all provided with sensor for measuring panel structure parameter in real time.The application is fixed strip-shaped protrusion above roadbed, and the purpose of positioning and preliminary fixation is achieved to concrete panel, and concrete panel is fixed to the clamping fixed stake at four corners by prefabricated steel, to form multiple positioning and fixation, ensure the connection strength, while reducing operation difficulty.

Description

Technical Field

[0001] This invention belongs to the field of concrete pavement technology, and in particular relates to a prefabricated cement concrete pavement structure for long-term performance network monitoring. Background Technology

[0002] Currently, in the field of road engineering pavement, cement concrete pavement and asphalt concrete pavement are mainly used. Cement concrete pavement is mostly constructed by on-site casting. Cement concrete pavement has the advantages of high rigidity, high strength, good integrity, and strong resistance to erosion. Its disadvantages are slow construction progress and long curing period, which cannot meet the needs of projects requiring uninterrupted navigation or emergency repairs. At the same time, there are many constraints on construction, such as strong winds, high temperatures, rain, snow, and freezing weather. Prefabricated cement concrete pavement can solve the above problems. However, the existing prefabricated cement concrete pavement slab structures have inconsistent connection structures, resulting in insufficient guarantee of the connection strength of the existing structures, and the operation is complicated. Summary of the Invention

[0003] The purpose of this invention is to provide a prefabricated cement concrete pavement structure for long-term performance network monitoring, so as to solve the problems existing in the prior art.

[0004] To achieve the above objectives, this invention provides a prefabricated cement concrete pavement structure for long-term performance network monitoring, comprising a roadbed, a plurality of parallel strip-shaped protrusions fixedly disposed on the top of the roadbed, a plurality of concrete panels being snapped onto the upper part of the roadbed along the strip-shaped protrusions, the concrete panels being rectangular structures, a locking fixing pile being fixedly disposed at each corner of the concrete panel by the roadbed, two precast steel bars arranged diagonally disposed inside the concrete panel, the two ends of the precast steel bars being detachably connected to the adjacent locking fixing piles respectively; a snap-fit ​​connection assembly is connected between any two adjacent concrete panels snapped onto the same strip-shaped protrusion; sensors for real-time measurement of panel structural parameters are disposed on the roadbed, concrete panels, snap-fit ​​connection assembly, and precast steel bars.

[0005] Preferably, the cross-section of the strip protrusion is trapezoidal, and the bottom of the concrete panel is provided with a first groove that matches the strip protrusion; each concrete panel has at least two strip protrusions arranged on its bottom.

[0006] Preferably, the snap-fit ​​connection assembly is disposed on the top of the strip-shaped protrusion. The snap-fit ​​connection assembly includes an I-shaped connector. The two sides of the I-shaped connector are snapped into two adjacent concrete panels respectively. A second groove for accommodating part of the I-shaped connector is provided in the concrete panel. The second groove is disposed above the first groove.

[0007] Preferably, the concrete panel and the strip protrusion below it have mounting holes along the diagonal of the concrete panel, the precast steel bars are arranged in the mounting holes, and the two ends of the precast steel bars are detachably connected to the locking posts on both sides after extending out of the locking posts.

[0008] Preferably, the locking and fixing pile is a cuboid structure, and a fixing limiter is provided inside the locking and fixing pile. The fixing limiter has a limiting rotation groove, which is engaged with the outside of the steel bar end fixer.

[0009] Preferably, the locking post is fitted with an elastic locking member, and the outer side of the elastic locking member is fixedly connected with a strip-shaped locking member for filling the gaps between adjacent concrete panels.

[0010] Preferably, each of the fixing piles has several connecting holes, which face the space between the roadbed and the concrete panel.

[0011] Compared with the prior art, the present invention has the following advantages and technical effects:

[0012] This invention provides a prefabricated cement concrete pavement structure for long-term performance network monitoring. The invention positions and initially fixes the concrete pavement by fixing strip-shaped protrusions above the roadbed. Then, it connects any two adjacent concrete pavements that are clamped on the same strip-shaped protrusion through a snap-fit ​​connection component for secondary fixation. Finally, it fixes the concrete pavement to the clamping fixing piles at the four corners with precast steel bars, thus forming a multi-positioning and fixing system that ensures connection strength while reducing operational difficulty. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the road panel structure of the present invention;

[0015] Figure 2 This is a schematic diagram of the precast steel reinforcement distribution structure of the present invention;

[0016] Figure 3 This is a bottom view of the concrete panel of the present invention;

[0017] Among them, 1 is the roadbed, 2 is the strip protrusion, 3 is the concrete panel, 4 is the positioning and fixing pile, 5 is the precast steel bar, 6 is the first groove, 7 is the I-shaped connector, 8 is the second groove, 9 is the steel bar end fixer, 10 is the fixing limiter, and 11 is the limiting rotation groove. Detailed Implementation

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other. The described embodiments are merely some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this invention. The invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] Reference Figure 1-3 This invention provides a prefabricated cement concrete pavement structure for long-term performance network monitoring, comprising a roadbed 1, with several parallel strip-shaped protrusions 2 fixedly installed on the top of the roadbed 1, and several concrete panels 3 clamped along the strip-shaped protrusions 2 on the upper part of the roadbed 1. The concrete panels 3 are rectangular structures, and a locking fixing pile 4 is fixedly installed at the corner of each concrete panel 3 on the roadbed 1. Two precast steel bars 5 are installed inside the concrete panel 3 along the diagonal, and the two ends of the precast steel bars 5 are detachably connected to their adjacent locking fixing piles 4. A locking connection assembly is connected between any two adjacent concrete panels 3 clamped on the same strip-shaped protrusion 2. Sensors for real-time measurement of panel structure parameters are installed on the roadbed 1, concrete panels 3, locking connection assembly, and precast steel bars 5. Sensors include, but are not limited to, tension sensors, load sensors, and pressure sensors. Cement concrete pavement structures will generate complex stress-strain responses under external loads. The actual stress and strain information within the structure is an important basis for constructing design methods, determining design parameters, conducting structural evaluation, and diagnosing defects. At the same time, the damage to cement pavement is inseparable from the stress-strain response within the structure. By using multiple sensors to observe the performance of concrete structures over a long period of time, and with all sensors connected to the same control terminal, real-time network observation can be carried out.

[0020] This invention uses strip-shaped protrusions fixed above the roadbed to position and initially fix the concrete panels. Then, it uses a snap-fit ​​connection component to connect any two adjacent concrete panels snapped onto the same strip-shaped protrusion for secondary fixation. Finally, it uses precast steel bars to fix the concrete panels to the snap-fit ​​fixing piles at the four corners, thus forming a multi-positioning and fixing system that ensures connection strength while reducing operational difficulty.

[0021] Further optimization of the scheme: the cross-section of the strip protrusion 2 is trapezoidal, and the bottom of the concrete panel 3 is provided with a first groove 6 that matches the strip protrusion 2; each concrete panel 3 has at least two strip protrusions 2 arranged at its bottom. The concrete panel 3 is constrained in multiple positions by multiple strip protrusions 2 to prevent lateral swaying and ensure the relative stability between the concrete panel 3 and the roadbed 1.

[0022] In a further optimized design, a snap-fit ​​connection assembly is positioned on top of the strip-shaped protrusion 2. This assembly includes an I-shaped connector 7, with each side of the I-shaped connector 7 snapping into two adjacent concrete panels 3. A second groove 8 is formed within each concrete panel 3 to accommodate a portion of the I-shaped connector 7, positioned above the first groove 6. The I-shaped connector 7 connects two vertically adjacent concrete panels 3, and the strip-shaped protrusion 2 lifts and snaps the panel into the second groove 8, forming a vertical connection.

[0023] To further optimize the design, installation holes are provided along the diagonal of the concrete panel 3 and the strip-shaped protrusion 2 below it. Precast steel bars 5 are arranged in the installation holes, and the two ends of the precast steel bars 5 extend out of the locking and fixing piles 4 on both sides and are detachably connected to the steel bar end fixing devices 9. The concrete panel 3, the strip-shaped protrusion 2 below it, and the locking and fixing piles 4 are multiple times fixed by the precast steel bars 5.

[0024] The design is further optimized by incorporating a rectangular structure for the positioning and fixing pile 4. A fixing limiter 10 is installed inside the positioning and fixing pile 4, and a limiting rotation groove 11 is formed on the fixing limiter 10. The limiting rotation groove 11 engages with the outside of the rebar end fixing device 9. The limiting rotation groove 11 restricts the rotation of the rebar end fixing device, preventing the precast rebar 5 from loosening and ensuring the connection strength of the precast rebar 5.

[0025] The scheme is further optimized by inserting an elastic snap-fit ​​component inside the locking and fixing pile 4. The outer side of the elastic snap-fit ​​component is fixedly connected to a strip snap-fit ​​component for filling the gap between adjacent concrete panels 3. Both the elastic snap-fit ​​component and the strip snap-fit ​​component are made of elastic material, which ensures the installation strength while providing elasticity to the concrete panel 3 and preventing collision between adjacent concrete panels 3.

[0026] To further optimize the scheme, each positioning and fixing pile 4 has several connecting holes facing the gap between the roadbed 1 and the concrete panel 3. After the concrete panel 3 is fixed to the positioning and fixing piles at the four corners of the roadbed 1 using precast steel bars 5, cement grout is injected into multiple positioning and fixing piles 4 in the middle of the roadbed 1. The cement grout enters the gap between the roadbed 1 and the concrete panel 3 through the positioning and fixing piles 4 and the connecting holes on the positioning and fixing piles 4, filling the gap and expelling the air between the gaps. When all the positioning and fixing piles 4 around the roadbed 1 contain cement grout and the height of the cement grout is higher than the height of the strip protrusions 2, the grouting is stopped, and then it solidifies and forms a solid shape, thereby ensuring the support strength between the roadbed 1 and the concrete panel 3. Furthermore, since multiple positioning and fixing methods have been established between the roadbed 1 and the concrete panel 3 in the early stage, support is formed before grouting, and concrete support is formed between the two after grouting, further ensuring the load-bearing capacity of the roadbed 1 on the concrete panel 3 and the load-bearing structure above it.

[0027] This invention provides a prefabricated cement concrete pavement structure for long-term performance network monitoring. During operation, an appropriate number of concrete panels 3 are set according to the pavement width and length, and their positions are arranged as needed. Secondly, based on the specifications of the concrete panels 3, strip-shaped protrusions 2 and fixing stakes 4 are fixedly installed on the roadbed 1 during its pouring to ensure proper installation of the concrete panels 3 later. Then, the position of the I-shaped connector 7 is determined according to the position of the concrete panels 3, and the I-shaped connector 7 is placed in the corresponding position. Next, the concrete panels 3 are transported to their respective positions. After placement, under the action of gravity, the I-shaped connector 7 engages with the second groove 8, and the strip-shaped protrusion 2 engages with the first groove 6, thus completing the initial positioning and installation. Afterwards, precast steel bars 5 are installed into the concrete panels 3 and the strip-shaped protrusions 2 below them, and the two ends of the precast steel bars 5 are detachably connected to the fixing stakes via steel bar end fixers 9. Subsequently, cement grout is injected into multiple positioning and fixing piles 4 in the middle of the roadbed 1. The cement grout enters the gap between the roadbed 1 and the concrete panel 3 through the positioning and fixing piles 4 and the connecting holes on the positioning and fixing piles 4, filling the gap and expelling the air between the gaps. When all the positioning and fixing piles 4 around the roadbed 1 contain cement grout and the height of the cement grout is higher than the height of the strip protrusions 2, the grouting is stopped. The fixing limiter 10 is then installed to prevent the end fixing device 9 of the reinforcing bar from rotating and affecting the tensile state of the precast reinforcing bar 5. Finally, the elastic clamping piece is clamped into the positioning and fixing pile 4, and the strip clamping piece is clamped into the gap of the adjacent concrete panel 3. Both the elastic clamping piece and the strip clamping piece are made of elastic material to ensure installation strength while providing elasticity to the concrete panel 3 and preventing collision between adjacent concrete panels 3. The installation of all concrete panels 3 is completed according to the above steps.

[0028] The above are merely preferred embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A prefabricated cement concrete pavement structure for long-term performance network monitoring, characterized in that, The system includes a roadbed (1), on which several parallel strip protrusions (2) are fixedly installed. Several concrete panels (3) are snapped onto the upper part of the roadbed (1) along the strip protrusions (2). The concrete panels (3) are rectangular structures. At the corner of each concrete panel (3), the roadbed (1) is fixedly provided with a locking and fixing pile (4). Inside the concrete panel (3), there are two precast steel bars (5) arranged along the diagonal. The two ends of the precast steel bars (5) are detachably connected to the adjacent locking and fixing piles (4). A snap-fit ​​connection assembly is connected between any two adjacent concrete panels (3) snapped onto the same strip protrusion (2). Sensors for real-time measurement of panel structure parameters are provided on the roadbed (1), concrete panels (3), snap-fit ​​connection assembly, and precast steel bars (5). The cross section of the strip protrusion (2) is trapezoidal, and the bottom of the concrete panel (3) is provided with a first groove (6) that matches the strip protrusion (2); each concrete panel (3) has at least two strip protrusions (2) arranged at its bottom. The snap-fit ​​connection assembly is disposed on the top of the strip protrusion (2). The snap-fit ​​connection assembly includes an I-shaped connector (7). The two sides of the I-shaped connector (7) are snapped into two adjacent concrete panels (3). A second groove (8) is provided in the concrete panel (3) to accommodate part of the I-shaped connector (7). The second groove (8) is disposed above the first groove (6). The concrete panel (3) and the strip protrusion (2) below it are provided with installation holes along the diagonal of the concrete panel (3). The precast steel bars (5) are arranged in the installation holes. The two ends of the precast steel bars (5) are detachably connected to the locking and fixing piles (4) on both sides. The locking and fixing pile (4) is a cubic structure. A fixing limiter (10) is provided inside the locking and fixing pile (4). A limiting rotation groove (11) is opened on the fixing limiter (10). The limiting rotation groove (11) is locked to the outside of the steel bar end fixing device (9). The locking post (4) is fitted with an elastic locking member, and the outer side of the elastic locking member is fixedly connected with a strip-shaped locking member for filling the gap between adjacent concrete panels (3). Each of the positioning fixing piles (4) has several connecting holes, which face the roadbed (1) and the concrete panel (3).

Images