Manufacturing method of road and bridge expansion joint device

Abstract

The invention discloses a manufacturing method of a highway bridge expansion joint device. The manufacturing method of the highway bridge expansion joint device comprises the following steps that an expansion joint body is selected; one part of the multiple recombined bamboos is selected to be cut and machined, so that end recombined bamboos are manufactured; the other part of the multiple recombined bamboos is selected to be cut, so that middle recombined bamboos are manufactured; and the middle recombined bamboo is selected to be arranged on the mounting seat, so that the end recombined bamboo and the middle recombined bamboo are spliced on the mounting seat to form a rectangle. Therefore, a plurality of recombined bamboos are cut and processed into the middle recombined bamboos and the end recombined bamboos, and after the middle recombined bamboos and the end recombined bamboos are detachably mounted on the mounting seats, the middle recombined bamboos and the end recombined bamboos are tightly spliced together through the shape structures of the middle recombined bamboos and the end recombined bamboos; the structural stability of the road and bridge expansion joint device can be improved, and the construction period of the road and bridge expansion joint device can be shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of road and bridge expansion joints, and in particular to a method for manufacturing a road and bridge expansion joint device. Background Art

[0002] In the existing technology, expansion joints are generally constructed using a concrete pouring process. When constructing and repairing expansion joints, it is difficult to remove the concrete, which hinders traffic. After the concrete is re-poured, it takes a long time to cure to reach the preset strength, and the entire construction period is long.

[0003] Furthermore, before pouring concrete, the spacing area of ​​the expansion joint must be filled with foam plastic to avoid blocking the gap when pouring concrete. However, this cannot completely prevent the expansion joint from being blocked, and the construction process is cumbersome. In addition, the concrete is prone to cracking and deformation, and has poor stability and reliability, and a short service life. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a method for manufacturing a road bridge expansion joint device, which is simpler and faster to manufacture, has a shorter construction period, and produces a more stable and reliable structure for the road bridge expansion joint device.

[0005] The manufacturing method of the highway bridge expansion joint device according to the present application comprises the following steps: selecting an expansion joint body, wherein the expansion joint body extends in a first direction and is provided with mounting seats on both sides in a second direction, and a plurality of bolts are arranged on the mounting seats; selecting a part of the reconstituted bamboos to cut and process to manufacture end reconstituted bamboos, wherein the end reconstituted bamboos comprise first protruding blocks and first recessed blocks, the first protruding blocks are arranged on one side of the first recessed blocks in the second direction, and the first protruding blocks are protrudingly arranged on both sides of the first recessed blocks in the first direction; selecting another part of the reconstituted bamboos to cut and process to manufacture middle reconstituted bamboo plates, wherein the middle reconstituted bamboo plates comprise second protruding blocks and second recessed blocks, the second protruding blocks are arranged on one side of the second recessed blocks in the second direction, and the second protruding blocks are protrudingly arranged on both sides of the second recessed blocks in the first direction; according to the distribution of the bolts on the mounting seats, bolt holes are arranged on the middle reconstituted bamboo plates and the end reconstituted bamboo plates; the middle reconstituted bamboo plates are arranged on the mounting seats, the end reconstituted bamboo plates are arranged on both ends of the middle reconstituted bamboo plates in the first direction, the first protruding blocks correspond to the second recessed blocks, the second protruding blocks correspond to the first recessed blocks, and the end reconstituted bamboo plates and the middle reconstituted bamboo plates are arranged in a jointed manner, wherein the plurality of bolts on the mounting seats are inserted into the plurality of bolt holes in a one-to-one correspondence and are detachably connected and fixed with the bolt holes, and the first direction and the second direction are perpendicular to each other.

[0006] Therefore, by cutting and processing a plurality of reconstituted bamboos into middle reconstituted bamboos and end reconstituted bamboos with specific shapes, and then detachably arranging the middle reconstituted bamboos and the end reconstituted bamboos on the mounting seats, the first protruding blocks correspond to the second recessed blocks, the second protruding blocks correspond to the first recessed blocks, and the middle reconstituted bamboos and the end reconstituted bamboos are tightly jointed together, which not only improves the structural stability of the highway bridge expansion joint device, but also shortens the construction period of the highway bridge expansion joint device and simplifies the construction installation.

[0007] Further, the reconstituted bamboo plate assembly is made by fiber reconstitution and resin curing of ordinary bamboo plates, which not only overcomes the defects of cracking and easy deformation, but also makes the water content of the reconstituted bamboo plate assembly lower, which is suitable for environments with large changes in temperature and humidity. In addition, by such arrangement, concrete pouring is not required, which can avoid the use of filling materials to fill the expansion joint gap to prevent the expansion joint gap from being blocked, and can further simplify the construction process and reduce the construction difficulty.

[0008] In some examples of the present invention, the step of selecting a portion of the plurality of reconstructed bamboos for cutting and processing to produce an end reconstructed bamboo board, wherein the end reconstructed bamboo board includes a first protruding block and a first recessed block, the first protruding block is arranged on one side of the first recessed block in the second direction, and the first protruding block is arranged to protrude relative to the first recessed block on one side in the first direction includes: Selecting a portion of the plurality of reconstructed bamboos for preliminary cutting so that the widths of the plurality of reconstructed bamboos in the second direction and the thicknesses in the third direction are both within a first preset value; A portion of the plurality of reconstructed bamboos is cut again to form the end reconstructed bamboo board.

[0009] In some examples of the present invention, the step of selecting another part of the multiple reconstructed bamboos for cutting and processing to produce a middle reconstructed bamboo board, wherein the middle reconstructed bamboo board includes a second protruding block and a second recessed block, the second protruding block is arranged on one side of the second recessed block in the second direction, and the second protruding block is protruded on both sides of the second recessed block toward the first direction further includes: selecting another part of the multiple reconstructed bamboos for preliminary cutting processing so that the width of the multiple reconstructed bamboos in the second direction and the thickness in the third direction are both at a first preset value; and cutting and processing a part of the multiple reconstructed bamboos again to process into the middle reconstructed bamboo board.

[0010] In some examples of the present invention, the middle reconstructed bamboo board is selected and set on the mounting seat, and the end reconstructed bamboo boards are selected and set at both ends of the middle reconstructed bamboo board in the first direction and assembled with the middle reconstructed bamboo board. After the step of inserting the bolt on the mounting seat into the bolt hole and being detachably connected and fixed to the bolt hole, it also includes: filling the bolt hole with resin.

[0011] In some examples of the present invention, after the step of filling the bolt hole with resin, the step further includes: removing the portion of the resin overflowing from the bolt hole so that the side of the resin in the third direction away from the mounting seat is flush with the side of the bolt hole in the third direction away from the mounting seat, wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0012] In some examples of the present invention, the step of opening bolt holes on the middle reorganized bamboo board and the end reorganized bamboo board according to the distribution of the bolts on the mounting base and the preset arrangement of the middle reorganized bamboo board and the end reorganized bamboo board further includes: controlling the length of the bolt hole in the third direction to be greater than the length of the bolt in the third direction, so as to prevent the bolt from extending out of the bolt hole after the bolt is extended into the bolt hole and connected and fixed with the bolt hole.

[0013] In some examples of the present application, the step of drilling bolt holes on the middle reorganized bamboo board and the end reorganized bamboo board according to the distribution of the bolts on the mounting base further comprises: setting the distance of two adjacent bolt holes in the first direction as L1, L1 satisfies the relationship: 380mm≤L1≤420mm; and setting the distance of two adjacent bolt holes in the second direction as L2, L2 satisfies the relationship: 130mm≤L2≤140mm.

[0014] In some examples of the present application, before the step of preliminarily cutting and processing the plurality of reorganized bamboos so that the width of the plurality of reorganized bamboos in the second direction and the thickness of the plurality of reorganized bamboos in the third direction are both at preset values, the method further comprises: softening the bamboo pieces; removing green from the softened bamboo pieces and performing drying treatment; immersing the dried bamboo pieces in resin; and stacking the plurality of bamboo pieces immersed in resin in a mold, and performing pressing under high temperature and high pressure, so that the plurality of bamboo pieces are tightly combined to form the reorganized bamboo.

[0015] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, taken in conjunction with the accompanying drawings, in which: Figure 1 is a flowchart of a manufacturing method of a road bridge expansion joint device according to an embodiment of the present application; Figure 2 is a schematic view of a road bridge expansion joint device according to an embodiment of the present application; Figure 3 is a schematic view of a middle reorganized bamboo board according to an embodiment of the present application; Figure 4 is a schematic view of an end reorganized bamboo board according to an embodiment of the present application; Figure 5 is a partial schematic view of a pin and groove compression test of a reorganized bamboo according to an embodiment of the present application; Figure 6 is a partial schematic view of a cross-grain compression test of a reorganized bamboo and a reorganized bamboo-steel bolt single shear test according to an embodiment of the present application; Figure 7 is a partial schematic view of at least two vehicles driving side by side on an expansion joint device according to an embodiment of the present application; Figure 8 is a schematic view of a vehicle driving on a bridge according to an embodiment of the present application.

[0017] REFERENCE NUMERALS: 100. Road and bridge expansion joint devices; 10. Expansion joint body; 11. Bolts; 12. Mounting seat; 20. Reassembled bamboo board assembly; 21. End reassembled bamboo board; 211. First recessed block; 212. First protruding block; 22. Middle reassembled bamboo board; 221. Second recessed block; 222. Second protruding block; 23. Bolt hole. DETAILED DESCRIPTION

[0018] The embodiments of the present invention will be described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention will be described in detail below.

[0019] Reference below Figures 1-4 A method for manufacturing a road and bridge expansion joint device 100 according to an embodiment of the present invention is described.

[0020] Combine Figures 1-4 As shown, the manufacturing method of the road bridge expansion joint device 100 according to the present invention can mainly include the following steps: S1. Select an expansion joint body 10, wherein the expansion joint body 10 extends in a first direction and has mounting seats 12 on both sides of a second direction, and a plurality of bolts 11 are provided on the mounting seats 12; S2. Select a portion of the plurality of reconstructed bamboos and cut and process them to produce an end reconstructed bamboo board 21, wherein the end reconstructed bamboo board 21 includes a first protruding block 212 and a first recessed block 211, wherein the first protruding block 212 is disposed on one side of the first recessed block 211 in the second direction, and the first protruding block 212 is disposed protruding relative to the side of the first recessed block 211 in the first direction; S3. Select another portion of the plurality of reconstructed bamboos for cutting and processing to produce a middle reconstructed bamboo board 22, wherein the middle reconstructed bamboo board 22 includes a second protruding block 222 and a second recessed block 221, wherein the second protruding block 222 is disposed on one side of the second recessed block 221 in the second direction, and the second protruding block 222 is disposed protruding on both sides of the second recessed block 221 in the first direction; S4. According to the distribution of the bolts on the mounting base 12, bolt holes 23 are opened on the middle reorganized bamboo board 22 and the end reorganized bamboo board 21; S5. Select the middle reorganized bamboo board 22 and set it on the mounting seat, select the end reorganized bamboo boards 21 and set them at both ends of the middle reorganized bamboo board 22 in the first direction, and make the first protruding block 212 correspond to the second recessed block 221, and make the second protruding block 222 correspond to the first recessed block 221, so that the end reorganized bamboo boards 21 and the middle reorganized bamboo board 22 are spliced ​​and set, wherein the multiple bolts 11 on the mounting seat 12 extend into the multiple bolt holes 23 in a one-to-one correspondence and are detachably connected and fixed to the bolt holes 23, wherein the first direction and the second direction are perpendicular to each other.

[0021] Specifically, a plurality of reconstructed bamboos are cut and processed according to a preset shape to obtain a middle reconstructed bamboo board 22 and an end reconstructed bamboo board 21, wherein the end reconstructed bamboo board 21 includes a first protruding block 212 and a first recessed block 211, the first protruding block 212 is arranged on one side of the first recessed block 211 in the second direction, and the first protruding block 212 is protruded relative to the side of the first recessed block 211 toward the first direction, the middle reconstructed bamboo board 22 includes a second protruding block 222 and a second recessed block 221, the second protruding block 222 is arranged on one side of the second recessed block 221 in the second direction, and the second protruding block 222 is protruded relative to both sides of the second recessed block 221 toward the first direction, After the bolt holes 23 are opened on the bamboo panels 21, the middle reorganized bamboo panels 22 and the end reorganized bamboo panels 21 are arranged on the mounting seat 12 according to a specific placement method, and the bolt holes 23 are detachably connected to the bolts 11 on the mounting seat 12. The middle reorganized bamboo panels 22 and the end reorganized bamboo panels 21 are placed in a specific manner so that the first recessed blocks 211 of the end reorganized bamboo panels 21 correspond to the second protruding blocks 222 of the middle reorganized bamboo panels 22, and the first protruding blocks 212 of the end reorganized bamboo panels 21 correspond to the second recessed blocks 221 of the middle reorganized bamboo panels 22. In this way, the end reorganized bamboo panels 21 and the middle reorganized bamboo panels 22 can be spliced ​​tightly and form a rectangle, thereby adapting to the expansion joint body 10.

[0022] Such an arrangement not only makes the structure of the middle reorganized bamboo board 22 and the end reorganized bamboo board 21 simpler, but also after the middle reorganized bamboo board 22 and the end reorganized bamboo board 21 are installed on the mounting seat 12, the splicing of the middle reorganized bamboo board 22 and the end reorganized bamboo board 21 is simpler and more direct, with a certain fool-proofness, which can reduce the difficulty of construction and assembly of the road bridge expansion joint device 100.

[0023] Road and bridge expansion joints are crucial components of road and bridge structures. Due to factors such as temperature fluctuations, loads, material shrinkage, and creep, bridge structures can undergo longitudinal changes. Expansion joints allow bridges to freely move longitudinally and transversely under these influences, thereby preventing damage caused by structural deformation.

[0024] The road and bridge expansion joint device can ensure that there is no obvious bump when vehicles pass through, ensure the safety and comfort of driving, reduce damage to vehicles, and the road and bridge expansion joint device usually also has certain waterproof performance, can prevent rainwater and the like from directly penetrating into the inside of the road and bridge, protect the road and bridge structure from water damage erosion, and prolong the service life of the road and bridge. And the road and bridge expansion joint device also has the functions of shock absorption and noise reduction, which helps to reduce noise pollution caused by traffic, and protects the bridge structure from damage caused by vibration. Further, the road and bridge expansion joint device can effectively disperse stress and reduce the interaction force between each part of the bridge, thereby protecting the integrity and stability of the overall structure of the bridge.

[0025] Further, the middle and end reconstituted bamboo plates 22 and 21 are detachably installed on the mounting seat 12 through the bolt holes 23 and the bolts 11, and the reconstituted bamboo plate assembly 20 is formed by splicing a plurality of reconstituted bamboo plates, which not only makes the installation of the reconstituted bamboo plate assembly 20 on the expansion joint body 10 simpler and more direct, but also reduces the difficulty of installation, and after the reconstituted bamboo plate assembly 20 is installed on the expansion joint body 10, vehicles can pass directly without waiting, which reduces the construction period and makes disassembly and maintenance faster and reduces the impact on vehicle traffic on the road or bridge.

[0026] Further, the reconstituted bamboo plate assembly 20 is made by fiber reconstitution and resin curing of ordinary bamboo plates, which not only overcomes the defects of cracking and easy deformation, but also makes the water content of the reconstituted bamboo plate assembly 20 lower, which is suitable for environments with large changes in temperature and humidity. In addition, such a setting does not require the use of concrete pouring, which can avoid the use of filling materials to fill the expansion joint gap to prevent the expansion joint gap from being blocked, and can further simplify the construction process and reduce the construction difficulty.

[0027] In some embodiments of the present application, a part of the plurality of reconstituted bamboos is selected for preliminary cutting processing to make the width in the second direction and the thickness in the third direction of the plurality of reconstituted bamboos be at a preset value, and a part of the plurality of reconstituted bamboos is cut again to process the end reconstituted bamboo plate 21.

[0028] Another part of the plurality of reconstituted bamboos is selected for preliminary cutting processing to make the width in the second direction and the thickness in the third direction of the plurality of reconstituted bamboos be at a preset value, and a part of the plurality of reconstituted bamboos is cut again to process the middle reconstituted bamboo plate 22.

[0029] Specifically, the plurality of reconstructed bamboos can be preliminarily cut and processed so that the width of the plurality of reconstructed bamboos in the second direction and the thickness in the third direction are both at preset values. Then, a portion of the plurality of reconstructed bamboos can be cut and processed into the middle reconstructed bamboo board 22 according to needs, and another portion of the plurality of reconstructed bamboos can be cut and processed into the end reconstructed bamboo boards 21 according to needs. This can further simplify the cutting process of the reconstructed bamboo.

[0030] Furthermore, by providing a plurality of middle reorganized bamboo panels 22, and making the second protruding block 222 of one of two adjacent middle reorganized bamboo panels 22 correspond to the second recessed block 221 of the other, and making the second recessed block 221 of one of two adjacent middle reorganized bamboo panels 22 correspond to the second protruding block 222 of the other, this not only makes the splicing of the reorganized bamboo panel assembly 20 more convenient, but also allows the length of the reorganized bamboo panel assembly 20 to be changed according to different needs, thereby making the reorganized bamboo panel assembly 20 suitable for different application environments.

[0031] Combine Figure 1-Figure 3 As shown, the parts of the second protruding block 222 that protrude on both sides of the second recessed block 221 toward the first direction are set as the first protruding part and the second protruding part, respectively. The lengths of the first protruding part and the second protruding part in the first direction are equal. The part of the first protruding block 212 that protrudes on one side of the first recessed block 211 toward the first direction is set as the third protruding part, and the length of the third protruding part in the first direction is equal to the lengths of the first protruding part and the second protruding part in the first direction.

[0032] Such an arrangement can make the connection between two adjacent middle reconstructed bamboo panels 22 tighter, thereby further improving the structural stability of the reconstructed bamboo panel assembly 20 .

[0033] In some embodiments of the present invention, based on the distribution of the bolts 11 on the mounting base and the preset arrangement of the middle reassembled bamboo panels 22 and the end reassembled bamboo panels 21, the step of opening the bolt holes 23 on the middle reassembled bamboo panels 22 and the end reassembled bamboo panels 21 further includes: controlling the length of the bolt hole 23 in the third direction to be greater than the length of the bolt 11 in the third direction, so as to prevent the bolt 11 from extending out of the bolt hole 23 after the bolt 11 is inserted into the bolt hole 23 and connected and fixed thereto.

[0034] Specifically, the length of the bolt 11 in the third direction is smaller than the length of the bolt hole 23 in the third direction to prevent the bolt 11 from extending from the side of the bolt hole 23 in the third direction away from the mounting seat 12, wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0035] Specifically, by making the length of the bolt 11 in the third direction shorter than the length of the bolt hole 23 in the third direction, the bolt 11 can be prevented from extending from the side of the bolt hole 23 in the third direction away from the mounting seat 12. This can make the surface of the side of the reorganized bamboo board assembly 20 in the third direction away from the mounting seat 12 smoother, and can prevent the bolt 11 from protruding in the third direction from the surface of the side of the reorganized bamboo board assembly 20 in the third direction away from the mounting seat 12, causing the bolt 11 to damage the vehicle, thereby further improving the structural reliability of the road and bridge expansion joint device 100.

[0036] It should be noted that the first direction may be a left-right direction, the second direction may be a front-back direction, and the third direction may be an up-down direction.

[0037] In some embodiments of the present invention, a middle reconstructed bamboo board 22 is selected and set on the mounting seat 12, and end reconstructed bamboo boards 21 are selected and set at both ends of the middle reconstructed bamboo board 22 in the first direction and assembled with the middle reconstructed bamboo board 22. After the step of inserting the bolt 11 on the mounting seat 12 into the bolt hole 23 and being detachably connected and fixed to the bolt hole 23, it also includes: filling the bolt hole 23 with resin.

[0038] Specifically, filling the bolt hole 23 with resin can make the resin part fill the gap between the bolt hole 23 and the bolt 11, which not only makes the connection between the bolt hole 23 and the bolt 11 tighter, but also makes the surface of the side of the reconstructed bamboo board assembly 20 away from the mounting seat 12 in the third direction smoother, which can improve the stability and reliability of the vehicle when driving on the road and bridge expansion joint device 100.

[0039] As shown in the combined figure, after the step of filling the bolt hole 23 with resin, the step also includes: removing the portion of the resin overflowing from the bolt hole 23, so that the side of the resin away from the mounting seat 12 in the third direction is flush with the side of the bolt hole 23 away from the mounting seat 12 in the third direction, wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0040] Specifically, after the resin is filled into the bolt hole 23, due to inevitable process errors, part of the resin will overflow from the bolt hole 23, thereby affecting the flatness of the surface of the third side of the reconstructed bamboo board assembly 20 away from the mounting seat 12. By removing the part of the resin that overflows from the bolt hole 23, the surface of the third side of the reconstructed bamboo board assembly 20 away from the mounting seat 12 can be made smoother, thereby improving the stability and safety of vehicle passage.

[0041] Combine Figure 2As shown, a plurality of bolt holes 23 spaced apart in the first direction are provided on the middle reorganized bamboo board 22, and a plurality of bolt holes 23 spaced apart in the first direction are provided on the end reorganized bamboo board 21. In each reorganized bamboo board assembly 20, the plurality of bolt holes 23 spaced apart in the first direction on the middle reorganized bamboo board 22 and the end reorganized bamboo board 21 constitute a bolt hole group. There are a plurality of bolt hole groups, and the plurality of bolt hole groups are spaced apart in the second direction. A portion of the plurality of bolt hole groups is connected to the bolts 11, and another portion of the plurality of bolt hole groups is connected to an external support box or an anchoring device via fasteners.

[0042] Specifically, by setting a plurality of bolt hole groups, a part of the plurality of bolt hole groups is detachably connected to the bolts 11 on the mounting seat 12, and another part of the plurality of bolt hole groups is detachably connected to the external support box or anchoring device through fasteners. In this way, the reorganized bamboo board assembly 20 can be connected and fixed to the mounting seat 12 at the same time as the reorganized bamboo board assembly 20 is connected and fixed to the external support box or anchoring device, thereby further improving the installation speed of the road and bridge expansion joint device 100, thereby further reducing the construction period of the road and bridge expansion joint device 100.

[0043] Furthermore, by setting up multiple bolts 11, when a vehicle passes on the road and bridge expansion joint device 100, the reconstructed bamboo board assembly 20 will be subjected to the friction force of the vehicle tires, so that the multiple bolts 11 resist the shear force of the vehicle, which can further improve the structural reliability of the road and bridge expansion joint device 100.

[0044] Combine Figure 1 As shown, the compressive strength of the reconstructed bamboo board assembly 20 is set to α, and α satisfies the relationship: 50 MPa≤α≤70 MPa. The bending strength of the reconstructed bamboo board assembly 20 is set to β, and β satisfies the relationship: β≥100 MPa.

[0045] Specifically, after high-temperature and high-pressure treatment, the reconstructed bamboo panel assembly 20 achieves a compressive strength of 50-70 MPa and a flexural strength exceeding 100 MPa. These strengths are significantly higher than those of ordinary wood, approaching those of hardwood and even some steel, making them suitable for use as structural support materials. The reconstructed bamboo panel assembly 20, formed by fiber reorganization and resin curing of ordinary bamboo panels, overcomes the cracking and deformation defects of natural bamboo and ordinary wood. Its moisture content can be controlled below 8%, making it suitable for environments with large temperature and humidity fluctuations. It also possesses significant compressive and shear bearing capacity.

[0046] According to the distribution of the bolts on the mounting seat, the step of opening the bolt holes 23 on the middle reed bamboo board 22 and the end reed bamboo board 21 further comprises: setting the distance of two bolt holes 23 adjacent in the first direction in the first direction as L1, L1 satisfies the relationship: 380mm≤L1≤420mm; and setting the distance of two bolt holes 23 adjacent in the second direction in the second direction as L2, L2 satisfies the relationship: 130mm≤L2≤140mm.

[0047] In some specific embodiments of the present application, the gap between two bolt holes 23 adjacent in the first direction is 400mm, the width of the middle reed bamboo board 22 and the end reed bamboo board 21 in the second direction is 300mm, the thickness in the third direction is 68mm, the length of the middle reed bamboo board 22 in the first direction is 3.8m, the length of the end reed bamboo board 21 in the first direction is 2.05m, the depth of the bolt holes 23 on the middle reed bamboo board 22 and the end reed bamboo board 21 in the third direction is 50mm, and the gap between two bolt hole groups adjacent in the second direction is 136mm.

[0048] In the present application, the pin slot bearing test of the reed bamboo is carried out according to the American Standard Test Method for Evaluating the Pin Bearing Strength of Wood and Wood Products ASTM-D5764-97, combined with Figure 5 As shown in the figure, the length is 120mm, the width is 68mm, the height is 82mm, the center position of the pin slot guide hole is 42mm high, the hole diameter of the pin slot guide hole is 1mm larger than the corresponding bolt nominal diameter, the material of the bolt is Q235 grade steel with a strength of 4.8, and the bolt diameter is 12mm, 14mm or 16mm. A microcomputer-controlled universal mechanical testing machine is used for monotonic loading with a loading speed of 1mm / min until the bolt is embedded in the sample or the test is stopped after reaching the ultimate load. The test loading mode is as shown in Figure 5 The test group numbers are 1, 2 and 3, and each group of samples is repeated three times. Combined with Figure 6 As shown in the figure, the reed bamboo transverse compression test and the reed bamboo-steel bolt single shear test are also carried out. The experimental results are shown in the following table (the fire-retardant and corrosion-resistant performance detection report is shown in the attached figure): Table 1 is the pin slot bearing test and single shear failure test results Table 1 In the test, the reed bamboo bolt connection appears a single hinge failure mode. According to the Wood Structure Design Standard, the single shear connection failure mode is III, and when the components in the connection meet the thickness requirement, the connection bearing capacity formula can be simplified as: In the formula: is the yield bearing capacity (kN) of each shear surface of a single bolt connection with a diameter of d; Calculate the design capacity factor for bolted connections; According to the yield load data obtained from the simple shear test, the fitting : The ultimate bearing capacity calculation formula is obtained: is the yield capacity of each shear plane of a single bolt connection with diameter d (kN); is the bolt length (mm); d is the bolt diameter (mm); The bearing strength of the pin groove with an opening diameter of d (MPa).

[0049] According to the above tests, the average transverse compressive strength of reconstructed bamboo reaches 48.83MPa, which is far higher than that of ordinary concrete. The load at the time of single shear failure of the pin-groove connector shows that the reconstructed bamboo prepared by the invention is connected with steel bolts. After multiple bolt connections (the number of 12mm bolts is greater than 9, the number of 14mm bolts is greater than 8, and the number of 16mm bolts is greater than 7), the bearing capacity is greater than the friction force of the vehicle load on the ground. The reconstructed bamboo and steel combination of the reconstructed bamboo-steel hybrid structure bridge deck collaborative expansion joint device uses bolt connections to meet the requirements of the specifications, can meet engineering use, has high engineering value and practicality, and can provide more choices and applications for bridge expansion joint devices.

[0050] Furthermore, the length of the reconstructed bamboo module, the number of bolts, and the screw hole spacing are determined as follows: ① Length of reorganized bamboo module: Combine Figure 6 As shown, based on the maximum wheel load, Road-I vehicle load, it is considered that when at least two vehicles are traveling side by side, three wheels act on the expansion joint device.

[0051] The length of the reconstructed bamboo module is arranged transversely according to the vehicle load. Considering that when at least two vehicles are traveling side by side, three sets of wheels act on the expansion joint device, the length is greater than 1.8+1.3=3.1m. In the present invention, the convex-shaped reconstructed bamboo module is 3.8m long.

[0052] ②Number of bolts: Determine the number of bolts required based on the shear force (friction force) of the maximum wheel load on the reassembled bamboo module, combined with Figure 7 As shown, —Friction force of vehicle load on the ground, here the friction force of wheels on the reconstructed bamboo (kN); —When two vehicles are traveling side by side under the road-level I vehicle load, the standard value of the gravity force exerted on the expansion joint device by the three sets of wheels on the rear axle is 210kN; — Friction coefficient of the wheel in contact with the reconstructed bamboo (0.2 0.5), here we take the maximum value of 0.5.

[0053] The calculation formula of the ultimate bearing capacity based on the yield load obtained from the simple shear test is: is the shear capacity of a single bolt connection member with a diameter of d (kN); is the bolt length (mm); d is the bolt diameter (mm); The bearing strength of the pin groove with an opening diameter of d (MPa).

[0054] The shear capacity of single bolt connection components with three diameters is calculated as follows: ; ; .

[0055] Calculation formula for shear (friction) bearing capacity of multi-bolt connection: Shear capacity of multi-bolt connection (kN); Number of bolts; is the bolt length (mm); d is the bolt diameter (mm); The bearing strength of the pin groove with an opening diameter of d (MPa).

[0056] Determination of minimum number of multiple bolt connections: The number of bolts used for connection with diameter d is: When d=12mm, 9 (8.43), When d=14mm, 8 (7.58), When d=16mm, 7 (6.72), Considering the load of a single row of bolts, when the bolts are anchored on the steel expansion joint device, the number of bolts with a diameter of d = 12mm is taken to meet the minimum requirement of 9. The other row is anchored on the concrete anchor plate. The double row of bolts combination fully meets the load-bearing capacity requirements.

[0057] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0058] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0059] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A method for manufacturing a highway bridge expansion joint device, characterized in that: The following steps are involved: An expansion joint body is selected, wherein the expansion joint body extends in a first direction and is provided with mounting seats on both sides of a second direction, and a plurality of bolts are provided on the mounting seats; Selecting a portion of the plurality of reconstructed bamboos for cutting and processing to produce an end reconstructed bamboo, wherein the end reconstructed bamboo comprises a first protruding block and a first recessed block, the first protruding block being disposed on one side of the first recessed block in the second direction, and the first protruding block being disposed protruding relative to the side of the first recessed block in the first direction; Another portion of the plurality of reconstructed bamboos is selected for cutting and processing to produce a middle reconstructed bamboo board, wherein the middle reconstructed bamboo board includes a second protruding block and a second recessed block, the second protruding block is disposed on one side of the second recessed block in the second direction, and the second protruding block is disposed protruding on both sides of the second recessed block in the first direction; According to the distribution of the bolts on the mounting base, bolt holes are opened on the middle reassembled bamboo board and the end reassembled bamboo board; A middle reorganized bamboo board is selected and set on the mounting seat, and the end reorganized bamboo boards are selected and set at both ends of the middle reorganized bamboo board in the first direction, and the first protruding block is made to correspond to the second recessed block, and the second protruding block is made to correspond to the first recessed block, so that the end reorganized bamboo boards and the middle reorganized bamboo board are spliced ​​and set, wherein the multiple bolts on the mounting seat extend into the multiple bolt holes one by one and are detachably connected and fixed to the bolt holes, wherein the first direction and the second direction are perpendicular to each other.

2. The method for manufacturing a highway bridge expansion joint device according to claim 1, characterized in that: The step of selecting a portion of the plurality of reconstructed bamboos for cutting and processing to produce an end reconstructed bamboo board, wherein the end reconstructed bamboo board comprises a first protruding block and a first recessed block, the first protruding block being arranged on one side of the first recessed block in the second direction, and the first protruding block being arranged to protrude relative to the first recessed block in the first direction comprises: Selecting a portion of the plurality of reconstructed bamboos for preliminary cutting so that the widths of the plurality of reconstructed bamboos in the second direction and the thicknesses in the third direction are both within a first preset value; A portion of the plurality of reconstructed bamboos is cut again to form the end reconstructed bamboo board.

3. The manufacturing method of the highway bridge expansion joint device according to claim 1, characterized in that: The step of selecting another portion of the plurality of reconstructed bamboos for cutting and processing to produce a middle reconstructed bamboo board, wherein the middle reconstructed bamboo board includes a second protruding block and a second recessed block, the second protruding block is arranged on one side of the second recessed block in the second direction, and the second protruding block is arranged to protrude on both sides of the second recessed block in the first direction further includes: Selecting another portion of the plurality of reconstructed bamboos for preliminary cutting so that the widths of the plurality of reconstructed bamboos in the second direction and the thicknesses in the third direction are both within a first preset value; A portion of the plurality of reconstructed bamboos is cut again to form the middle reconstructed bamboo board.

4. The method for manufacturing a highway bridge expansion joint device according to claim 1, characterized in that: The step of selecting the middle reassembled bamboo board and setting it on the mounting seat, selecting the end reassembled bamboo boards and setting them on both ends of the middle reassembled bamboo board in the first direction and assembling them with the middle reassembled bamboo board, wherein, after the step of inserting the bolts on the mounting seat into the bolt holes and being detachably connected and fixed to the bolt holes, the method further comprises: The bolt holes are filled with resin.

5. The method for manufacturing a highway bridge expansion joint device according to claim 4, characterized in that: After the step of filling the bolt hole with resin, the method further comprises: The portion of the resin overflowing from the bolt hole is removed so that the side of the resin in the third direction away from the mounting seat is flush with the side of the bolt hole in the third direction away from the mounting seat, wherein the first direction, the second direction and the third direction are perpendicular to each other.

6. The method for manufacturing a highway bridge expansion joint device according to claim 1, characterized in that: The step of opening bolt holes in the middle reassembled bamboo board and the end reassembled bamboo board according to the distribution of the bolts on the mounting seat and the preset arrangement of the middle reassembled bamboo board and the end reassembled bamboo board further comprises: The length of the bolt hole in the third direction is controlled to be greater than the length of the bolt in the third direction, so as to prevent the bolt from extending out of the bolt hole after the bolt is inserted into the bolt hole and connected and fixed with the bolt hole.

7. The method for manufacturing a highway bridge expansion joint device according to claim 1, characterized in that: The step of opening bolt holes on the middle reassembled bamboo board and the end reassembled bamboo board according to the distribution of the bolts on the mounting seat further comprises: The distance between two adjacent bolt holes in the first direction is set to L1, and L1 satisfies the relationship: 380 mm ≤ L1 ≤ 420 mm; The distance between two adjacent bolt holes in the second direction is set to L2, and L2 satisfies the relationship: 130 mm ≤ L2 ≤ 140 mm.

8. The method for manufacturing a highway bridge expansion joint device according to claim 1, characterized in that: Before the step of performing preliminary cutting on the plurality of reconstructed bamboos so that the widths in the second direction and the thicknesses in the third direction of the plurality of reconstructed bamboos are both within preset values, the method further comprises: Soften the bamboo strips; Remove the green part from the softened bamboo strips and dry them; The dried bamboo pieces are impregnated in resin; A plurality of bamboo slices impregnated with resin are stacked and placed in a mold, and pressed under high temperature and high pressure, so that the plurality of bamboo slices are tightly combined to form the reconstructed bamboo.

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