Low-loss prefabricated road slab and construction method therefor

Abstract

A low-loss prefabricated road slab and a construction method therefor. The low-loss prefabricated road slab comprises two road slabs (1), wherein L-shaped steps (103) are arranged on the periphery of each road slab (1), a T-shaped slot is formed between the two road slabs (1), a plurality of connecting devices (4) and a plurality of resistance wires (2) are provided between the two road slabs (1), an angle rib plate (6) is arranged on each road slab (1), and two end of each connecting device (4) are connected to different road slabs (1), respectively; and the T-shaped slot is filled with sulfur mortar (9).

Description

Low-loss fabricated pavement slab and construction method thereof TECHNICAL FIELD

[0001] The present application relates to the field of pavement construction, in particular to a low-loss fabricated pavement slab and a construction method thereof. BACKGROUND

[0002] The construction of temporary roads and temporary sites has been increasingly changed from cast-in-place pavement to fabricated concrete pavement. The pavement slab is prefabricated at a prefabrication site, then transported to the site for hoisting construction by a crane, and then the reserved bars between the slabs are welded or connected by anchoring, buckling and other methods at the site. The existing fabricated concrete pavement slab construction mainly includes direct laying method, mechanical connection method and mortise and tenon connection method. However, there are still many shortcomings.

[0003] 1. Direct laying method: gaps are left between the slabs, rainwater is easy to penetrate into the foundation to cause uneven settlement of the foundation, and the slabs are warped and crushed at the edge under heavy load. Because there is no rigid connection between the slabs, sliding dislocation is easy to occur when the vehicle turns, bears heavy load or the foundation is uneven, which leads to uneven pavement and even the risk of overturning, and it is difficult to disperse the load for the independent slab to bear independently, which is easy to cause slab corner cracking or local foundation settlement, and frequent maintenance and repositioning are required to increase the process maintenance cost.

[0004] 2. Mechanical connection method: the existing mechanical connection method has the problems of loose connection after assembly, inability to form an effective whole between the slabs, and water leakage and seepage at the joint. It is easy to cause the edge and corner of the slab to be crushed, and it is difficult to achieve the effect of low cost and high reuse rate of fabricated construction.

[0005] 3. Mortise and tenon connection method: the mortise and tenon connection cannot form an effective whole, which reduces the integrity of the pavement slab, rainwater is easy to penetrate into the foundation from the gap, the slabs are easy to warp under heavy load, the edge and corner of the pavement slab are crushed, the reuse rate is reduced, and the maintenance cost is increased. The tapered foot beam is not conducive to transportation and reuse for fabricated construction. The foot beam is easily damaged by knocking, which reduces the reuse rate of the pavement slab and increases the later cost.

[0006] Another existing fabricated slab is tightly spliced by using mortar to solidify after cooling, but cracks are generated in the mortar during cooling, which affects the overall stability of the spliced slab.

[0007] Chinese patent document CN118029224A discloses a fabricated temporary pavement and a manufacturing method thereof, which is a mechanical connection method. The connected slab is unevenly stressed under heavy load, and the lower part of the joint is not constrained, so that the hinge part is crushed. Rainwater and the like are easy to penetrate into the foundation from the gap, causing uneven settlement of the foundation, and the slabs are easy to warp under heavy load, and the edge and corner of the pavement slab are crushed.

[0008] The Chinese patent document CN117166309A discloses a prefabricated concrete traffic pavement and a construction method thereof, the method is a mortise and tenon connection method, and asphalt needs to be used for filling gaps between plates and pouring grooves, which greatly increases the construction cost, and many projects such as highway projects do not have the condition of producing asphalt in the early stage, and the prefabricated pavement plate has the characteristics of high efficiency, environmental protection and low cost. SUMMARY

[0009] The present application provides a low-loss prefabricated pavement plate and a construction method thereof, which solves the problems of uneven surface of the existing prefabricated concrete pavement plate and even overturning risk, difficulty in dispersing load by independent bearing of a single plate, easy to cause plate corner cracking or local foundation settlement, and the need for frequent maintenance and resetting to increase process maintenance cost, water leakage and seepage at the joint, and inability to form an effective whole, thereby reducing the integrity of the pavement plate.

[0010] Another problem solved by the present application is that the prefabricated plate can be tightly spliced by mortar solidification after cooling, but cracks are generated in the cooling process of the mortar, affecting the overall stability of the spliced plate.

[0011] To solve the above technical problems, the technical scheme adopted by the present application is: a low-loss prefabricated pavement plate and a construction method thereof, comprising two road plates, the road plates are provided with L-shaped steps around, a T-shaped notch is formed between the two road plates, a plurality of connecting devices and a plurality of resistance wires are arranged between the two road plates, an angle rib plate is arranged on the road plate, and the connecting devices are respectively connected to different road plates at two ends.

[0012] The T-shaped notch is filled with sulfur mortar.

[0013] In the preferred scheme, the road plate is a hollow structure, a plurality of lifting holes are arranged on the road plate, an upper steel mesh is arranged at the top of the inside of the road plate, and a lower steel mesh is arranged at the bottom of the inside of the road plate.

[0014] In the preferred scheme, the connecting device comprises two bases, a connecting rod is arranged between the two bases, shear pins are arranged on the top of the bases, and nuts are arranged at the two ends of the connecting rod.

[0015] In the preferred scheme, the two bases are respectively installed on the L-shaped steps of different road plates, horizontal holes are arranged on the bases, flat-bottom holes are arranged on the top of the bases, the connecting rod abuts against the horizontal holes, and the shear pins abut against the flat-bottom holes.

[0016] In the preferred scheme, a plurality of steel fibers are arranged at the vertical corners of the inside of the road plate, one side of the angle rib plate abuts against the inner wall of the L-shaped step of the road plate, the top of the angle rib plate abuts against the top of the inner wall of the road plate, and the bottom of the angle rib plate abuts against the bottom of the inner wall of the road plate.

[0017] In the preferred solution, the two road plate bottoms are provided with filling materials, and the sulfur mortar abuts against the filling materials, and the plurality of resistance wires are divided into upper layer resistance wires, middle layer resistance wires and lower layer resistance wires.

[0018] In the preferred solution, the plurality of resistance wires are provided with adjusting devices on one side, the adjusting device comprises a shell, a second resistance wire is arranged in the shell, a sliding slide rod is arranged on the shell, a slide block is arranged on the slide rod, a movable contact is arranged on one end of the slide block, the movable contact abuts against the second resistance wire, and three slide blocks are arranged on one side of the second resistance wire.

[0019] In the preferred solution, the three slide blocks are connected with resistance wires of different layers respectively, a guide rod is arranged in the shell, a transverse groove is arranged on one side of the shell, the slide block comprises a second slide block, the second slide block slides against the guide rod, a second contact is arranged on one end of the second slide block, the second contact abuts against the second resistance wire, a slide block is arranged on one end of the second slide block, and the slide block slides against the transverse groove.

[0020] In the preferred solution, the adjusting device is provided with an electricity connection socket on one side, the electricity connection socket is provided with a first insertion hole, a second insertion hole and a third insertion hole, the first insertion hole, the second insertion hole and the third insertion hole are connected with contact points of the three slide blocks through cables in sequence, the electricity connection socket is provided with an electricity connection plug on one side, and three plugs of the electricity connection plug are connected with the upper layer resistance wires, the middle layer resistance wires and the lower layer resistance wires through cables in sequence.

[0021] A construction method of a low-loss assembled road panel, characterized by the following steps: S1, preparation before construction: determining the number of road panels according to the area of the site to be built, determining the size of the road panel, and hoisting and transporting a plurality of road panels by hoisting;

[0022] S2, leveling the road foundation, installing the filling material, assembling and adjusting the road panel, and installing the base on the L-shaped step of the road panel through shear pins and connecting rods;

[0023] S3, resistance wire arrangement: arranging upper, middle and lower layers of resistance wires, connecting three plugs of the electricity connection plug with the upper, middle and lower layers of resistance wires through cables, connecting the adjusting device with the power supply, connecting the electricity connection socket with the electricity connection plug, and inserting the electricity connection plug into the electricity connection socket;

[0024] S4, sulfur mortar pouring: pouring the sulfur mortar, pulling the slide rod, initially adjusting the overall temperature, sliding a plurality of slide blocks, and accurately adjusting the temperature of the resistance wires of different layers, so that the temperature of each layer of resistance wires decreases from top to bottom until the sulfur mortar fills the T-shaped notch;

[0025] S5, sulfur mortar cooling: pull out the power plug, the power plug is inserted into the power socket, pull the slide rod, and the overall temperature is initially adjusted. The plurality of sliding knobs is slid to accurately adjust the temperature of the resistance wire of different layers. From top to bottom, the temperature of each layer of resistance wire is increased. During the cooling process of the sulfur mortar, the slide rod is slowly slid to reduce the overall resistance wire temperature to room temperature.

[0026] The beneficial effects of the present application are that the L-shaped steps are arranged around the road plate to form T-shaped notches between two adjacent road plates, and the T-shaped notches are filled with sulfur mortar. Because the sulfur mortar has the characteristics of hot melting and condensation, resistance wires are arranged in the T-shaped gaps. When disassembly is needed, the sulfur mortar is heated to a molten state by electricity to achieve rapid disassembly. At room temperature, the two road plates and the sulfur mortar form a whole, effectively preventing rainwater from penetrating.

[0027] The roadbed under the road plate does not need to be excessively leveled, and the roadbed is quickly processed by filling materials with sufficient load-bearing foam. When the roadbed stiffness is uneven, the roadbed can be quickly processed by filling materials with sufficient load-bearing foam.

[0028] The road plate is provided with a lifting hole, which can be used for lifting the overall structure. According to the actual situation, an anchor can be placed in the hole to increase the connection between the plate body and the foundation and improve the stability of the road plate. The road plate is provided with a plurality of angle rib plates, and steel fibers and other framework materials are added to the corners during prefabrication to enhance the corner strength of the panel.

[0029] The plurality of resistance wires can be powered to achieve closed filling of the notches and rapid disassembly of the road plate when needed. The shear pins further enhance the connection between the plate body and the sulfur mortar, which can connect the road plates and the filling material sulfur mortar in the T-shaped notches into a whole. Under the action of load, it can effectively transmit the horizontal shear force between the road plate and the sulfur mortar interface, ensure the cooperative work of the two materials, improve the structural connection strength and shear strength, and limit the interface slip to prevent the sulfur mortar from being "lifted up" and ensure that the road plates can form an effective whole and bear stress together.

[0030] The adjusting device can control the temperature of the multi-layer resistance wires, precisely adjust the temperature of the resistance wires of different layers when the sulfur mortar is melted, ensure that the temperature of the resistance wire layers from top to bottom is sequentially reduced, ensure that the sulfur mortar is poured and melted quickly, the melting effect is good, the construction period is saved, the two kinds of temperature adjustment can precisely control the temperature of different layers, avoid the change of the performance of the mortar caused by the temperature fluctuation, and ensure the temperature stability. When the sulfur mortar is cooled, the temperature gradient of the multi-layers of the sulfur mortar at different heights is avoided, the temperature difference can cause the thermal stress in the mortar, cracks are caused, the internal structure of the sulfur mortar is avoided from being cooled too quickly, the internal structure of the sulfur mortar is not uniform, the crystal growth is incomplete, the strength is reduced, cracks are caused, and the application value is high. BRIEF DESCRIPTION OF DRAWINGS

[0031] The application will be further described below in combination with the drawings and examples.

[0032] Fig. 1 is an axial side view of the overall structure of the application;

[0033] Fig. 2 is an elevation view of the overall structure of the application;

[0034] Fig. 3 is an exploded view of the overall structure of the application;

[0035] Fig. 4 is an axial side view of the partial structure of the application;

[0036] Fig. 5 is an enlarged view of A of Fig. 4 of the application;

[0037] Fig. 6 is an axial side view of the corner rib plate of the application;

[0038] Fig. 7 is an axial side view of the adjusting device of the application;

[0039] Fig. 8 is a half-sectional view of the adjusting device of the application;

[0040] Fig. 9 is an enlarged view of B of Fig. 8 of the application;

[0041] Fig. 10 is an enlarged view of C of Fig. 8 of the application;

[0042] Fig. 11 is a structural schematic view of the partial structure of the application;

[0043] In the figure: road board 1; outer panel 101; lifting hole 102; L-shaped step 103; resistance wire 2; adjusting device 3; shell 301; sliding rod 302; sliding block 303; movable contact 3031; second resistance wire 304; knob sliding block 305; contact point 3051; second sliding block 3052; knob 3053; second contact 3054; through hole 3055; guide rod 306; transverse groove 307; connecting device 4; base 401; horizontal hole 4011; flat bottom hole 4012; connecting rod 402; shear pin 403; nut 404; steel fiber 5; corner rib plate 6; power socket 7; first jack 701; second jack 702; third jack 703; power plug 8; plug 801; sulfur mortar 9; filling material 10; upper steel mesh 11; lower steel mesh 12. DETAILED DESCRIPTION Example 1

[0044] As shown in Figures 1-11, a low-loss prefabricated road panel and its construction method, including two road boards 1, the road board 1 is provided with an L-shaped step 103 around, the T-shaped notch is formed between the two road boards 1, a plurality of connecting devices 4 and a plurality of resistance wires 2 are arranged between the two road boards 1, the road board 1 is provided with a corner rib plate 6, and the connecting device 4 is connected with different road boards 1 at both ends;

[0045] The T-shaped notch is filled with sulfur mortar 9. With this structure, the road board 1 is provided with an L-shaped step 103 around, so that there is a T-shaped notch between two adjacent road boards 1, and the T-shaped notch is filled with sulfur mortar 9. Because the sulfur mortar 9 has the characteristics of hot melting and cold condensation, the resistance wire 2 is arranged in the T-shaped gap, and when it needs to be removed, the sulfur mortar 9 is heated to become a molten state by electricity, so that it can be quickly removed. At room temperature, the two road boards 1 and the sulfur mortar 9 form a whole, effectively preventing the infiltration of rainwater.

[0046] The roadbed under the road board 1 does not need to be excessively leveled, and the filling material 10 with sufficient load-bearing capacity of foam is used to realize the rapid treatment of the roadbed. When the roadbed stiffness is uneven, the roadbed can be quickly treated by the foam filling material 10 with sufficient load-bearing capacity.

[0047] The road board 1 is provided with a lifting hole 102, which can be used for lifting the whole structure, and according to the actual situation, an anchor can be placed in the hole to increase the connection between the plate body and the foundation and improve the stability of the road board 1. The road board 1 is provided with a plurality of corner rib plates 6, and at the same time, steel fiber 5 and other framework materials are added at the corner part during prefabrication to enhance the corner strength of the panel.

[0048] The multiple electric resistance wires 2 are set to be electrified when needed to realize the slot sealing filling and the road plate 1 quick removal. The shear pin 403 further enhances the connection between the plate body and the sulfur mortar 9, which can connect the road plates 1 and the filling material sulfur mortar 9 in the T-shaped slot into an integral whole, and effectively transmit the horizontal shear force between the road plate 1 and the sulfur mortar 9 under the load, ensuring the cooperative work of the two materials. The structural connection strength and shear strength are improved. At the same time, the interface slip is limited, the sulfur mortar 9 is prevented from being "lifted up", and it is ensured that the road plates 1 can form an effective integral whole and bear stress together.

[0049] The connecting device 4 in the T-shaped slot forms a skeleton between the plates through the connecting rod 402, and the high-strength sulfur mortar 9 is used as the filling material. The shear pin 403 further enhances the cooperative work of the road plate 1 and the sulfur mortar 9, and fundamentally solves the problem that the gap exists between the plates, rainwater and the like seep into the foundation through the gap, causing uneven settlement of the foundation, and then under the action of heavy load, the plate body is warped, the edge and corner of the plate body is extruded, and the edge and corner are extruded and damaged.

[0050] When the original roadbed stiffness is uneven, the foam type filling material 10 with sufficient bearing capacity can be directly used for roadbed treatment. The characteristics of light weight and high strength can make the roadbed stiffness and bearing capacity meet the use requirements, and the construction is quick and efficient, without the need for replacing high-strength soil, which greatly reduces the construction cost.

[0051] When the sulfur mortar 9 is poured, the upper layer electric resistance wire 2 needs to be set at a higher level, the purpose is to make the mortar melt quickly and reach the required melting state. The temperature rising speed is required to be fast, so that the upper layer mortar can reach the melting temperature in a short time and improve the production efficiency. The high temperature zone of the middle layer electric resistance wire 2 further heats the mortar which has begun to melt, so that it is more uniformly mixed and melted, and at the same time provides heat conduction for the melting of the lower layer mortar. The lower layer electric resistance wire 2 is set to be relatively lowest, the purpose is to maintain the melting state of the mortar, prevent it from solidifying too early, and at the same time provide appropriate temperature conditions for the discharge or subsequent treatment of the mortar. The overall electric resistance wire 2 needs to control the temperature rising speed, melt the sulfur mortar 9 while avoid the excessive heat stress caused by too fast temperature rising, damage the equipment or cause local overheating of the mortar.

[0052] At this time, the power plug 8 is connected to the power socket 7. The upper layer of resistance wires 2 is connected to the leftmost sliding block 305, and the lower layer of resistance wires 2 is connected to the rightmost sliding block 305. The upper layer of resistance wires 2 has the highest voltage, so the temperature of the upper layer of resistance wires 2 is the highest. The temperature of the resistance wires 2 from top to bottom decreases in turn. By moving the position of the sliding rod 302 to control the position of the sliding block 303, the initial adjustment of the voltage of the overall structure is realized. By moving the displacement of the multiple sliding blocks 305, the precise adjustment of the temperature of the resistance wires 2 of different layers is realized, and the temperature of the resistance wires 2 from top to bottom is ensured to decrease in turn, which guarantees the rapid melting of the sulfur mortar 9 and good melting effect, saves the construction period, and precisely controls the temperature of different layers through the two kinds of temperature adjustment, avoids the change of the performance of the mortar caused by temperature fluctuation, and guarantees the temperature stability.

[0053] When the sulfur mortar 9 is cooled after melting, the upper layer of resistance wires 2 is set to the lowest level, and the temperature of the lower layer of resistance wires 2 is relatively high. The upper part directly contacts with the air, has a large heat dissipation area, and the heat is dissipated quickly, so the temperature decreases rapidly. The lower part contacts with the ground or other supports, and the heat conductivity of these objects is usually worse than that of the air, which hinders the heat dissipation and causes the heat to accumulate in the lower part, so the temperature is relatively high.

[0054] At this time, the power plug 8 is connected to the power socket 7 in reverse. The temperature of the resistance wires 2 from top to bottom increases in turn. By moving the position of the sliding block 303, the temperature of the overall structure is slowly decreased, and the initial adjustment of the voltage of the overall structure is realized. During the whole process, the sliding block 303 is gradually moved to the side of the second resistance wire 304, and the output voltage is gradually decreased to 0. The whole process realizes slow cooling. By moving the displacement of the multiple sliding blocks 305, the precise adjustment of the temperature of the resistance wires 2 of different layers is realized, and the temperature of the resistance wires 2 from top to bottom is ensured to increase in turn. The two kinds of temperature adjustment can precisely control the temperature of different layers, and the overall structure can precisely control the temperature while slowly cooling when the sulfur mortar 9 is cooled, which avoids the formation of temperature gradient in different height layers of the sulfur mortar 9 during cooling, the temperature difference causes the thermal stress in the sulfur mortar 9, and the cracks occur. At the same time, the temperature of the overall sulfur mortar 9 is not decreased too quickly, which avoids the uneven structure of the sulfur mortar 9, the incomplete crystal growth, the decrease of the strength, the cracks, and the influence on the performance and service life of the sulfur mortar.

[0055] In the preferred scheme, the road plate 1 is a hollow structure, the road plate 1 is provided with multiple hanging holes 102, the top of the inside of the road plate 1 is provided with an upper steel mesh 11, and the bottom of the inside of the road plate 1 is provided with a lower steel mesh 12. According to the structure, the road plate 1 is provided with the hanging holes 102, which can be used for hoisting the overall structure. According to the actual situation, the ground anchor can be placed in the holes to increase the connection between the plate body and the foundation and improve the stability of the road plate 1.

[0056] The road board 1 is provided with a plurality of corner rib plates 6, and a skeleton material such as steel fiber 5 is added to the corner portion during prefabrication, and the lower steel mesh 12 and the upper steel mesh 11 simultaneously enhance the strength of the road board 1.

[0057] In the preferred embodiment, the connecting device 4 comprises two bases 401, a connecting rod 402 is arranged between the two bases 401, a shear pin 403 is arranged on the top of the base 401, and a nut 404 is arranged at the two ends of the connecting rod 402. With this structure, the connecting device 4 is arranged on the L-shaped step 103, and the connecting device 4 comprises a shear pin 403, which strengthens the connection between the road board 1 and the sulfur mortar 9 in the "T"-shaped notch and enhances the integrity of the road board 1. The connecting rod 402 is arranged between the shear pins 403 and is connected through the nut 404. The number of connecting rods 402 is set according to different situations. Generally, three connecting rods 402 are arranged at the center and both sides of each road board 1. If heavy load needs to be borne, the overall stiffness of the road board 1 can be enhanced by increasing the number of reinforcing rods.

[0058] In the preferred embodiment, the two bases 401 are respectively arranged on the L-shaped steps 103 of different road boards 1, a horizontal hole 4011 is arranged on the base 401, a flat-bottomed hole 4012 is arranged on the top of the base 401, the connecting rod 402 abuts against the horizontal hole 4011, and the shear pin 403 abuts against the flat-bottomed hole 4012. With this structure, the connecting device 4 is arranged on the L-shaped step 103, and the connecting device 4 comprises a shear pin 403, which strengthens the connection between the road board 1 and the sulfur mortar 9 in the "T"-shaped notch and enhances the integrity of the road board 1. The connecting rod 402 is arranged between the shear pins 403 and is connected through the nut 404. The number of connecting rods 402 is set according to different situations. Generally, three connecting rods 402 are arranged at the center and both sides of each road board 1. If heavy load needs to be borne, the overall stiffness of the road board 1 can be enhanced by increasing the number of reinforcing rods.

[0059] The subgrade under the road board 1 does not need to be excessively leveled, and the rapid treatment of the subgrade is realized through the foam filling material 10 with sufficient bearing capacity. When the subgrade stiffness is uneven, the rapid treatment of the subgrade can be realized through the foam filling material 10 with sufficient bearing capacity.

[0060] In the preferred embodiment, a plurality of steel fibers 5 are arranged at the vertical corners inside the road board 1, one side of the corner rib plate 6 abuts against the inner wall of the L-shaped step 103 of the road board 1, the top of the corner rib plate 6 abuts against the top of the inner wall of the road board 1, and the bottom of the corner rib plate 6 abuts against the bottom of the inner wall of the road board 1. With this structure, the corner rib plate 6 is arranged around the road board 1, and a skeleton material such as steel fiber 5 is added to the edge portion during prefabrication to enhance the strength of the edge portion.

[0061] In the preferred scheme, the two road plates 1 are provided with filling materials 10 at the bottom, the sulfur mortar 9 abuts against the filling materials 10, and the plurality of resistance wires 2 are divided into upper resistance wires 2, middle resistance wires 2 and lower resistance wires 2. With this structure, the sulfur mortar 9 is a thermoplastic composite material with sulfur as the cementing material. The compressive strength of the sulfur mortar 9 after solidification can reach 40-60 MPa, and the strength within 48 hours can reach 65% of the ultimate bearing capacity, quickly forming the bearing capacity. At the same time, it has excellent fatigue resistance and can withstand repeated loads and dynamic impact. It has fast hardening and early strength, and can reach the use strength within 0.5-2 hours after pouring, greatly shortening the construction period. The sulfur mortar 9 has corrosion resistance and good resistance to most inorganic salts, neutral salts and acid salt environments, and is completely suitable for the site environment.

[0062] In the preferred scheme, the plurality of resistance wires 2 are provided with adjusting devices 3 on one side, the adjusting device 3 includes a shell 301, a second resistance wire 304 is arranged in the shell 301, a sliding slide rod 302 is arranged on the shell 301, a sliding block 303 is arranged on the slide rod 302, a movable contact 3031 is arranged at one end of the sliding block 303, the movable contact 3031 abuts against the second resistance wire 304, and three dial sliding blocks 305 are arranged on one side of the second resistance wire 304. With this structure, the socket of the power socket 7 is three, the plug 801 of the power plug 8 is three, when the power socket 7 and the power plug 8 are connected in positive, the leftmost plug 801 is connected with the first socket 701 of the power socket 7, and the rightmost plug 801 is connected with the third socket 703 of the power socket 7.

[0063] When the power socket 7 and the power plug 8 are connected in reverse, the leftmost plug 801 is connected with the third socket 703 of the power socket 7, and the rightmost plug 801 is connected with the first socket 701 of the power socket 7.

[0064] In the preferred scheme, the three dial sliding blocks 305 are connected with resistance wires 2 of different layers respectively, a guide rod 306 is arranged in the shell 301, a transverse groove 307 is arranged on one side of the shell 301, the dial sliding block 305 includes a second sliding block 3052, the second sliding block 3052 abuts against and slides on the guide rod 306, a second contact 3054 is arranged at one end of the second sliding block 3052, the second contact 3054 abuts against the second resistance wire 304, a dial block 3053 is arranged at one end of the second sliding block 3052, and the dial block 3053 abuts against and slides on the transverse groove 307. With this structure,

[0065] In the preferred scheme, the adjusting device 3 is provided with an electrical connector 7 on one side, the electrical connector 7 is provided with a first socket 701, a second socket 702 and a third socket 703, the first socket 701, the second socket 702 and the third socket 703 are connected with the contact points 3051 of the three movable sliders 305 through cables in sequence, the electrical connector 7 is provided with an electrical connector 8 on one side, the three plugs of the electrical connector 8 are connected with the upper layer of resistance wires 2, the middle layer of resistance wires 2 and the lower layer of resistance wires 2 through cables in sequence. With this structure, the slide rod 302 serves as a conductive rod, the left end of the slide rod 302 is connected with the power supply, the other end of the slide rod 302 is an insulating end, and the staff adjusts the position of the slider 303 by pushing the slide rod 302. The resistance wires 2 are provided with temperature sensors.

[0066] When the sulfur mortar 9 starts to be poured, the electrical connector 8 is connected with the electrical connector 7 at this time. The upper layer of resistance wires 2 is connected with the leftmost movable slider 305, the lower layer of resistance wires 2 is connected with the rightmost movable slider 305, and the voltage of the movable slider 305 corresponding to the upper layer of resistance wires 2 is the highest, so that the temperature of the upper layer of resistance wires 2 is the highest, and the temperature of the resistance wire 2 layers from top to bottom decreases in turn. By moving the position of the slide rod 302 to control the position of the slider 303, the initial adjustment of the voltage of the overall structure is realized, and by moving the displacement of the multiple movable sliders 305, the precise adjustment of the temperature of the resistance wires 2 of different layers is realized, while ensuring that the temperature of the resistance wire 2 layers from top to bottom decreases in turn, ensuring that the sulfur mortar 9 is poured and melted quickly, the melting effect is good, the construction period is saved, and the two kinds of temperature adjustment can accurately control the temperature of different layers, avoid the change of the performance of the mortar caused by the temperature fluctuation, and ensure the temperature stability.

[0067] When the sulfur mortar 9 is cooled after melting, the electrical connector 8 is connected with the electrical connector 7 at this time, and the temperature of the resistance wire 2 layers from top to bottom increases in turn. By moving the position of the slider 303, the temperature of the overall structure is slowly decreased, the initial adjustment of the voltage of the overall structure is realized, the slider 303 is gradually moved to the side of the second resistance wire 304 in the whole process, and the output voltage is gradually decreased to 0. The whole process realizes slow cooling. By moving the displacement of the multiple movable sliders 305, the precise adjustment of the temperature of the resistance wires 2 of different layers is realized, while ensuring that the temperature of the resistance wire 2 layers from top to bottom increases in turn, the two kinds of temperature adjustment can accurately control the temperature of different layers, the overall structure can accurately control the temperature while slowly cooling when the sulfur mortar 9 is cooled, avoid the temperature gradient of the multiple layers of different heights of the sulfur mortar 9 when cooled, the temperature difference will cause thermal stress in the mortar, causing the phenomenon of cracks to occur. At the same time, avoid the temperature of the overall sulfur mortar 9 to decrease too fast, make the internal structure of the sulfur mortar uneven, the crystal growth incomplete, cause the strength to decrease, at the same time cause cracks, affect the performance and service life of the sulfur mortar. Example 2

[0068] Further illustrated in combination with Embodiment 1:

[0069] A construction method of a low-loss assembled pavement slab, characterized by: S1, preparation before construction: determining the number of road plates 1 according to the area of the site to be built, and determining the size of the road plates 1, and hoisting and transporting multiple road plates 1 through hoisting;

[0070] S2, leveling the pavement foundation, installing the filling material 10, assembling and adjusting the road plates 1, and installing the base 401 on the L-shaped step 103 of the road plate 1, and connecting through the shear pins 403 and the connecting rods 402;

[0071] S3, arranging the resistance wires 2: arranging the upper, middle and lower layers of resistance wires 2, connecting the three plugs of the power plug 8 with the upper, middle and lower layers of resistance wires 2 through cables, connecting the adjusting device 3 with the power supply, connecting the power socket 7 with the power plug 8, and inserting the power plug 8 into the power socket 7;

[0072] S4, pouring the sulfur mortar 9: pouring the sulfur mortar 9, pulling the slide rod 302, initially adjusting the overall temperature, sliding the multiple sliding blocks 305, accurately adjusting the temperature of the resistance wires 2 of different layers, reducing the temperature of each layer of resistance wires 2 from top to bottom, and filling the T-shaped notch with the sulfur mortar 9 until it is filled;

[0073] S5, cooling the sulfur mortar 9: pulling out the power plug 8, inserting the power plug 8 into the power socket 7 in reverse, pulling the slide rod 302, initially adjusting the overall temperature, sliding the multiple sliding blocks 305, accurately adjusting the temperature of the resistance wires 2 of different layers, increasing the temperature of each layer of resistance wires 2 from top to bottom, and slowly sliding the slide rod 302 during the cooling process of the sulfur mortar 9, so that the overall temperature of the resistance wires 2 is reduced to room temperature.

[0074] The above embodiments are only preferred technical solutions of the present application, and should not be regarded as limitations of the present application. The protection scope of the present application should be based on the technical solutions claimed in the claims, including equivalent replacement solutions of the technical features claimed in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present application.

Claims

1. A low-loss fabricated pavement panel, characterized by: Two road plates (1) are included, and L-shaped steps (103) are arranged around the road plates (1), a T-shaped notch is formed between the two road plates (1), a plurality of connecting devices (4) and a plurality of resistance wires (2) are arranged between the two road plates (1), an angle rib plate (6) is arranged on the road plate (1), and the two ends of the connecting device (4) are connected with different road plates (1) respectively; The T-shaped notch is filled with sulfur mortar (9).

2. The low-loss fabricated pavement panel of claim 1, wherein: The road plate (1) is of a hollow structure, a plurality of lifting holes (102) are arranged on the road plate (1), an upper steel mesh (11) is arranged at the top of the inside of the road plate (1), and a lower steel mesh (12) is arranged at the bottom of the inside of the road plate (1).

3. The low-loss fabricated pavement panel of claim 1, wherein: The connecting device (4) comprises two bases (401), a connecting rod (402) is arranged between the two bases (401), shear pins (403) are arranged at the top of the bases (401), and nuts (404) are arranged at the two ends of the connecting rod (402). ​ 4. The low-loss fabricated pavement panel of claim 3, wherein: The two bases (401) are respectively mounted on the L-shaped steps (103) of different road plates (1), horizontal holes (4011) are arranged on the bases (401), flat-bottomed holes (4012) are arranged at the top of the bases (401), the connecting rod (402) abuts against the horizontal holes (4011), and the shear pins (403) abut against the flat-bottomed holes (4012).

5. The low-loss fabricated pavement panel of claim 1, wherein: A plurality of steel fibers (5) are arranged at the vertical corners of the inside of the road plate (1), one side of the angle rib plate (6) abuts against the inner wall of the L-shaped step (103) of the road plate (1), the top of the angle rib plate (6) abuts against the top of the inner wall of the road plate (1), and the bottom of the angle rib plate (6) abuts against the bottom of the inner wall of the road plate (1).

6. The low-loss fabricated pavement panel of claim 1, wherein: The bottoms of the two road plates (1) are provided with filling materials (10), the sulfur mortar (9) abuts against the filling materials (10), and the plurality of resistance wires (2) are divided into upper resistance wires (2), middle resistance wires (2) and lower resistance wires (2).

7. The low-loss fabricated pavement panel of claim 1, wherein: One side of the plurality of resistance wires (2) is provided with an adjusting device (3), the adjusting device (3) comprises a shell (301), a second resistance wire (304) is arranged in the shell (301), a sliding slide rod (302) is arranged on the shell (301), a slide block (303) is arranged on the slide rod (302), a movable contact (3031) is arranged at one end of the slide block (303), the movable contact (3031) abuts against the second resistance wire (304), and three sliding slide blocks (305) are arranged at one side of the second resistance wire (304). ​ 8. The low-loss fabricated pavement panel of claim 7, wherein: The three sliding slide blocks (305) are connected with resistance wires (2) of different layers respectively, a guide rod (306) is arranged in the shell (301), a horizontal groove (307) is arranged at one side of the shell (301), the sliding slide block (305) comprises a second slide block (3052), the second slide block (3052) slides against the guide rod (306), a second contact (3054) is arranged at one end of the second slide block (3052), the second contact (3054) abuts against the second resistance wire (304), a sliding block (3053) is arranged at one end of the second slide block (3052), and the sliding block (3053) slides against the horizontal groove (307).

9. The low-loss fabricated pavement panel of claim 8, wherein: The adjusting device (3) is provided with an electric socket (7) on one side, the electric socket (7) is provided with a first socket (701), a second socket (702) and a third socket (703), the first socket (701), the second socket (702) and the third socket (703) are connected with the contact points (3051) of the three toggle sliders (305) through cables in sequence, and the electric socket (7) is provided with an electric plug (8) on one side, three plugs of the electric plug (8) are connected with the upper layer resistance wire (2), the middle layer resistance wire (2) and the lower layer resistance wire (2) through cables in sequence.

10. The construction method of the low-loss assembled pavement slab according to any one of claims 1-9, characterized in that: S1, preparation before construction: determine the number of road plates (1) according to the area of the site to be built, and determine the size of the road plate (1), and hoist and transport multiple road plates (1) through hoisting; S2, road foundation leveling, installation of filling material (10), road plate (1) assembly and adjustment, at the same time, the L-shaped step (103) of the road plate (1) is provided with a base (401), and the base (401) is connected through shear pins (403) and connecting rods (402); S3, resistance wire (2) arrangement: arranging upper, middle and lower layers of resistance wires (2), three plugs of the electric plug (8) are connected with the resistance wires (2) of the upper, middle and lower layers through cables, the adjusting device (3) is connected with the power supply, the electric socket (7) is connected with the electric plug (8), and the electric plug (8) is inserted into the electric socket (7); S4, sulfur mortar (9) pouring: pouring the sulfur mortar (9), pulling the slide rod (302), initially adjusting the overall temperature, sliding the plurality of toggle sliders (305), precisely adjusting the temperature of the resistance wires (2) of different layers, the temperature of each layer of resistance wires (2) decreases from top to bottom, until the sulfur mortar (9) is filled in the T-shaped notch; S5, sulfur mortar (9) cooling: pulling out the electric plug (8), the electric plug (8) is inserted into the electric socket (7) in reverse, pulling the slide rod (302), initially adjusting the overall temperature, sliding the plurality of toggle sliders (305), precisely adjusting the temperature of the resistance wires (2) of different layers, the temperature of each layer of resistance wires (2) increases from top to bottom, and during the cooling process of the sulfur mortar (9), the slide rod (302) is slowly slid to reduce the overall temperature of the resistance wires (2) to room temperature.

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