Roadbed slope construction process

Abstract

The invention relates to the technical field of roadbed side slopes, and provides a roadbed side slope construction process which comprises the following steps: S1, construction preparation: according to a drawing and survey and arrangement reference data and survey marks provided by a station supervision engineer, conducting traverse survey, leveling and side pile measurement in a roadbed, and summarizing a measurement result; s2, construction lofting is conducted, specifically, a roadbed center line and a filling slope toe line are paid out through a coordinate lofting method, and the slope toe position is calculated according to the set drawing specific height; s3, slope surface construction is conducted, specifically, paying off and slope brushing are conducted, a cushion layer is laid and then strickling is conducted, a formwork is installed according to the size of a to-be-reserved expansion joint, then concrete is poured, and after the concrete is dried to form a concrete layer, the formwork is detached; and S4, elastic filling strips are installed, specifically, connecting rods are inserted into the concrete layers on the two sides of the expansion joint, and the ends, away from the concrete layers, of the connecting rods extend into the expansion joint. The roadbed slope protection structure has the beneficial effect of improving the protection effect on the roadbed slope.

Description

Technical Field

[0001] The present application relates to the technical field of roadbed slopes, and in particular to a roadbed slope construction process. Background Art

[0002] The stability of the roadbed slope during road and bridge construction directly affects the safety and service life of the entire project. Cast-in-place concrete slope protection has strong integrity. In order to reduce the problem of concrete structure expansion, contraction and cracking caused by temperature changes during use, cast-in-place concrete slope protection needs to be set with expansion joints.

[0003] In the existing roadbed slope expansion joint construction, the expansion joint is usually filled with fillers, such as polyethylene closed-cell foam board materials and polysulfide sealants and other organic materials or expansion boards. The expansion joint is sealed with fillers to reduce rainwater from penetrating through the expansion joint to the bottom of the slope, thereby reducing soil erosion. However, as the slope ages, the filler ages. When the width of the expansion joint widens due to temperature changes, the polyethylene closed-cell foam board and polysulfide sealant are difficult to deform and close the expansion joint as the width of the expansion joint changes, causing rainwater to penetrate into the slope below through the gap between the expansion joint side wall and the filler, exacerbating soil erosion on the slope. Summary of the invention

[0004] In order to improve the protection effect of roadbed slope, the present application provides a roadbed slope construction process.

[0005] This application provides a roadbed slope construction process, which adopts the following technical solution: A roadbed slope construction process comprises the following steps: Step S1, construction preparation: according to the drawings and the surveying and setting benchmark data and surveying marks provided by the resident supervision office engineer, conduct traverse survey, leveling survey and mid- and side pile survey of the roadbed, and summarize the surveying results; Step S2, construction layout: Use the coordinate layout method to lay out the roadbed centerline and the fill slope foot line, and compare the height and calculate the slope foot position according to the setting drawing; Step S3, slope construction: laying out the lines and brushing the slope, laying the cushion layer and then scraping it flat, installing the template according to the size of the expansion joint to be reserved, and then pouring concrete. After the concrete is dry to form a concrete layer, the template is removed; Step S4, installing the elastic filling strip: connecting rods are inserted into the concrete layers on both sides of the expansion joint, and one end of the connecting rod away from the concrete layer extends into the expansion joint, and then the pre-processed elastic filling strip is installed in the expansion joint along the length direction of the expansion joint through sealant; wherein the elastic filling strip comprises a first filling strip and a second filling strip abutting against each other, and the surfaces of the first filling strip and the second filling strip close to each other are protruding with a plurality of convex strips that are staggered and abutted in sequence, and the convex strips are arranged along the entire length of the length direction of the elastic filling strip, and the convex strips are provided with slits, and the slits are arranged along the entire length of the length direction of the convex strip; wherein, the connecting rod is inserted into the slots opened on the opposite side walls of the first filling strip at both ends during the process of installing the elastic filling strip in the expansion joint; after installation, sealant is then filled between the elastic filling strip and the concrete layers on both sides, and the sealant is filled in the slot.

[0006] By adopting the above technical solution, the expansion joint is filled and sealed by elastic filling strips and sealant to reduce the penetration of external water into the soil through the expansion joint, thereby improving the protection effect of the slope. Since the concrete layer will expand and contract with temperature changes, the width of the expansion joint will increase or decrease. In this regard, the elastic filling strip includes a first filling strip and a second filling strip, and correspondingly provided with mutually abutting convex strips and cuts. Since the two ends of the connecting rod are respectively inserted into the concrete layer and the elastic filling strip, when the concrete layer shrinks, the elastic filling strip is driven to deform along the width direction of the expansion joint to improve the closed state of the expansion joint.

[0007] Compared with the case where the slits are arranged on the outer surface of the elastic filling strip, the aging rate is relatively reduced when the slits are arranged on the convex strips that abut against each other, thereby increasing the service life of the elastic filling strip.

[0008] Preferably, in step S4, a first limit piece is provided at the end of the connecting rod away from the concrete layer, a slot is provided on the top wall of the slot for the first limit piece to be engaged, the sealant is filled in the slot, and the slot extends to the lower surface of the first filling strip.

[0009] By adopting the above technical solution, the slot is extended to the lower surface of the first filling strip. When the elastic filling strip is placed in the expansion joint, the connecting rod is inserted into the slot and drives the first limiting member to be inserted into the slot, so as to improve the connection strength between the connecting rod and the elastic filling strip, so as to stretch or squeeze as the expansion joint expands and contracts.

[0010] Preferably, the cross section of the convex strip is V-shaped, and the slit is arranged at the tip of the convex strip and extends respectively toward surfaces of the first filling strip and the second filling strip that are away from each other.

[0011] By adopting the above technical solution, the cross section of the convex strip is set to be V-shaped to increase the length of the cut, thereby increasing the range of deformation of the elastic filling strip as the expansion joint changes, thereby improving the protective effect of the expansion joint.

[0012] Preferably, the convex strip arranged on the first filling strip is a first convex strip, and the convex strip arranged on the second filling strip is a second convex strip, and correspondingly, the slit arranged on the first convex strip is a first slit, and the slit arranged on the second convex strip is a second slit; the elastic filling strip also includes an elastic rope arranged between the first filling strip and the second filling strip, and a plurality of the elastic ropes are arranged at intervals along the length direction of the elastic filling strip; the elastic rope is used to pull the second filling strip to move toward the direction close to the first filling strip, and the middle part of the elastic rope is arranged at the connection between the two first convex strips, and the two ends of the elastic rope are respectively connected to the two side walls of the second slit of the upper second convex strip.

[0013] By adopting the above technical solution, an elastic rope with a first filling convex strip and a second filling convex strip is provided. Since the first filling strip has been adhered to the bottom wall of the expansion joint by a sealant, the elastic rope is used to pull the second filling strip to move toward the first filling strip, thereby improving the abutment effect between the two, so as to reduce the possibility that the second filling strip is squeezed and arched away from the expansion joint after the expansion joint shrinks due to thermal expansion.

[0014] Preferably, the first filling strip is provided with an adjusting component for adjusting the height position of the middle portion of the elastic rope.

[0015] By adopting the above technical solution, with long-term use, the pulling force of the elastic rope itself on the second filling strip will be reduced, thereby reducing the abutment effect between the first filling strip and the second filling strip. For this, an adjustment component is provided to adjust the height position of the middle part of the elastic rope, thereby further improving the abutment effect between the first filling strip and the second filling strip.

[0016] Preferably, the first filling strip is provided with a slide groove below the elastic rope, and the adjustment assembly includes an abutment plate slidably connected to the slide groove, a slide plate provided below the abutment plate, a first spring provided between the abutment plate and the slide plate, an adjustment rod provided above the abutment plate for pushing the abutment plate downward, and a second limit member for limiting the sliding of the slide plate, the slide plate is slidably connected to the slide groove, and the abutment plate is connected to the middle part of the elastic rope; the lower end of the adjustment rod is fixedly connected to the second slit, and the second filling strip is pressed to drive the adjustment rod to push the abutment plate downward.

[0017] By adopting the above technical solution, the second filling bar is pressed to drive the lower end of the adjusting rod to move downward, thereby pushing the abutment plate to move downward, and driving the first spring and the slide plate to slide under force. When sliding to a certain position, the limit piece is used to limit the sliding of the slide plate, so as to fix the adjusted relative height position, thereby changing the middle position of the elastic rope, so as to drive the second filling bar to move in the direction close to the first filling bar, so as to further improve the abutment effect between the two. Due to the elasticity of the first spring itself, the elastic rope provides elastic force compensation, and when pushing and squeezing the adjusting rod, compared with directly changing the tightness of the elastic rope to make the elasticity of the elastic rope invalid, the elasticity of the elastic rope itself can be maintained, so as to improve the abutment effect between the first filling bar and the second filling bar.

[0018] Preferably, the second limiting member includes a first limiting block protruding from the side wall of the skateboard, the opposite side walls of the first limiting block are provided with first guide surfaces, the first guide surfaces extend to the lower surface of the first limiting block, and the opposite surfaces of the sliding groove are provided with first limiting grooves for the first limiting block to be engaged.

[0019] By adopting the above technical solution, as the second filling strip is pressed, the adjusting rod, the abutment plate, the first spring and the slide plate are driven to move downward, and due to the cooperation between the first limiting block and the first limiting groove, the middle height position of the elastic rope that needs to be changed is fixed.

[0020] Preferably, the abutment plate is penetrated with a through slot for the adjustment rod to slide through, and the adjustment rod is slidably inserted through the first spring to abut against the slide plate.

[0021] By adopting the above technical solution, due to the characteristics of the slit itself, the width of the slit itself decreases in the direction away from the convex strip, and it may not be easy to push the abutment plate to push the slide plate downward under the elastic force of the first spring itself. For this purpose, a through groove for the adjusting rod to slide through and a first spring to abut the slide plate are provided on the abutment plate to directly apply a force to the slide plate, thereby driving the slide plate to move downward.

[0022] Preferably, the adjusting rod includes a sleeve fixed to the second filling strip and a sliding rod slidably inserted in the sleeve, the lower end of the sliding rod is connected to the abutment plate or is connected to the slide plate through the abutment plate, and the sleeve is provided with a third limiter for limiting the sliding of the sliding rod.

[0023] By adopting the above technical solution, the range of directly pressing the second filling strip to push the lower end of the fixed-length adjusting rod to move downward is limited. In this regard, the adjusting rod specifically includes a sleeve and a sliding rod slidably inserted in the sleeve, and the lower end of the sliding rod is connected to the abutment plate or the abutment plate is penetrated to connect with the slide plate. When the abutment plate is driven to move to a certain height position, the telescopic structure between the sliding rod and the sleeve can give a certain sliding range, and the sliding rod is limited by a third limiting member to limit the sliding of the sliding rod, so that the length of the adjusting rod can be changed.

[0024] Preferably, in step S4, the elastic filling strip is provided with a shielding piece, and the shielding piece is arranged along the entire length direction of the elastic filling strip, and when the sealant on both sides is not solidified, both sides of the shielding piece are inserted into the sealant on both sides.

[0025] By adopting the above technical solution, during use, external water may flow through the gap between the sealant and the elastic filling strip into the gap formed between the first filling strip and the second filling strip, so that aging may occur at the convex strip. For this, a shielding sheet is provided, and the shielding sheet and the sealant are connected to reduce the possibility of water penetrating into the convex strip.

[0026] In summary, this application has the following beneficial effects: The expansion joint is filled and sealed by elastic filling strips and sealant to reduce the penetration of external water into the soil through the expansion joint, thereby improving the protection effect of the slope. Since the concrete layer will expand and contract with temperature changes, the width of the expansion joint will increase or decrease. In this regard, the elastic filling strip includes a first filling strip and a second filling strip, and correspondingly provided with mutually abutting convex strips and cuts. Since the two ends of the connecting rod are respectively inserted into the concrete layer and the elastic filling strip, when the concrete layer shrinks, the elastic filling strip is driven to deform along the width direction of the expansion joint to improve the sealing state of the expansion joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the template in Example 1 of the present application; Figure 2 is a schematic diagram of the side cross-sectional structure of the slope in Example 1 of the present application; Figure 3 is a schematic diagram of the top view of the slope in Example 1 of the present application; Figure 4 is a schematic diagram of the cross-sectional structure of the elastic filling strip in Example 1 of the present application; Figure 5 yes Figure 4 A partial enlarged schematic diagram of part A; Figure 6is a schematic cross-sectional structure diagram of the adjustment component in Example 2 of the present application; Figure 7 yes Figure 6 A partial enlarged schematic diagram of part B; Figure 8 This is a schematic diagram of the structure in which the slide bar passes through the abutment plate in Example 2 of the present application; Fig. 9 is a schematic cross-sectional structure diagram of the adjustment component in Example 3 of the present application; Fig.10 yes Fig. 9 A partial enlarged schematic diagram of part C in the middle.

[0028] Description of reference numerals: 1. foundation; 11. cushion layer; 12. formwork; 13. steel bar; 14. concrete layer; 15. connecting rod; 16. first stopper; 2. expansion joint; 3. elastic filling strip; 31. first filling strip; 311. slot; 312. card slot; 313. slide slot; 314. first stopper slot; 32. second filling strip; 33. elastic rope; 4. convex strip; 41. first convex strip; 42. second convex strip; 5. slit; 51. The first slit; 52, the second slit; 6, the sealing glue layer; 7, the shielding plate; 8, the adjusting assembly; 81, the abutting plate; 811, the through groove; 82, the sliding plate; 83, the first spring; 84, the adjusting rod; 841, the sleeve; 842, the sliding rod; 843, the mounting groove; 844, the second limiting groove; 85, the second limiting member; 851, the first guide surface; 9, the third limiting member; 91, the second spring; 92, the second limiting block; 921, the second guide surface. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-10 , further details of this application are given.

[0030] The embodiment of the present application discloses a roadbed slope construction process.

[0031] Embodiment 1: A roadbed slope construction process comprises the following steps: Step S1, construction preparation: according to the drawings and the surveying and setting benchmark data and surveying marks provided by the resident supervision office engineer, conduct traverse survey, leveling survey and measurement of the middle and side piles of the roadbed, summarize the survey results and submit them to the resident supervision office engineer for verification.

[0032] Then, we start technical preparation to obtain the summary of laboratory standard test results and the corresponding complete set of data. Then we prepare on site, specifically: organize the relevant personnel to enter the site; remove obstacles within the construction site and level the working surface; equip drainage equipment and construction machinery.

[0033] Step S2, construction layout: Use the total station to lay out the center line of the roadbed and the fill toe line by the coordinate layout method, use the level to measure the original elevation of each elevation control point, and make a record, control the line center line, calculate the toe position according to the slope grade based on the elevation difference between the ramp elevation in the section of the design drawing and the top surface of the roadbed, add piles at the toe position point in the section, and layout the slope size.

[0034] Before carrying out slope construction, slope surface finishing and foundation construction are required. For slope surface finishing, specifically, the slope is brushed according to the designed slope layout. The roadbed slope is mainly brushed by excavators, and the earthwork widened and filled on both sides of the roadbed is removed. The slope is trimmed with a slope gauge and a line. The slope after trimming shall not be greater than the designed value. At the same time, the ground at the foot of the slope shall be leveled, and its longitudinal slope shall be the same as the longitudinal slope of the drainage ditch at the foot of the slope. When brushing the slope, pay attention to prevent large over-excavation and under-excavation. The over-excavation part shall be compacted and filled densely, and the under-excavation part shall be excavated to the designed section. The earthwork of brushing the slope and digging the trench shall be uniformly cleaned and transported to the designated location and shall not be randomly piled on site.

[0035] As for foundation construction, specifically, foundation excavation is carried out according to measurement and layout; after the excavation is accepted, the formwork is erected. The formwork uses a standardized steel formwork, and a 30cm steel bar is implanted at the bottom for fixation. The top of the formwork is pulled by a self-made steel support rod, and the arrangement spacing is 1m; after the formwork is set up, concrete pouring and vibration construction are carried out. Concrete vibration is carried out by inserting a vibrating rod, which should be inserted vertically into the concrete. The vibrating rod should be inserted quickly and pulled out slowly to avoid voids; the concrete vibration time should be appropriate. When the concrete stops sinking, no bubbles are emitted, slurry is overflowing, and the surface is flat, the vibration at this point is stopped and moved to the next point; when vibrating, the stability of the formwork support and the tightness of the joints should be strengthened to prevent leakage and mold running during the concrete vibration process; the concrete finishing requires that the concrete surface is flat and smooth, without defects such as bubbles; after the initial setting of the concrete, its surface is watered and maintained for a maintenance period of 7 days.

[0036] Step S3, slope construction: refer to Figure 1 , Figure 2 , S301, laying gravel cushion layer 11, gravel or crushed stone with a particle size of 5-40mm is used for the crushed stone cushion layer 11, which is gradually transported downward by cloth bags, and then flattened with a shovel after the cushion layer 11 material is transported to the designated address, and the error of the crushed stone cushion layer 11 does not exceed ±50mm. After the formwork 12 is installed properly, the gravel cushion layer 11 is leveled with a scraper, and water is sprinkled to wet the cushion layer 11 before pouring concrete to prevent the cushion layer 11 from eating slurry during concrete pouring; S302, set expansion joints 2, and construct them with 5m as a board. Use 15cm thick wooden blocks as templates 12 on both sides of the slope, and use anchor steel bars 13 to reinforce the templates 12 on both sides. Draw a horizontal line at the upper, middle and lower points of the templates 12 on both sides to control the thickness of concrete pouring. The slope concrete pouring should be poured from the bottom to the top, and vibrate in time after pouring; S303, after the slope is constructed, the surface is covered with a permeable geotextile to avoid sprinkling water for concrete curing. When the concrete is completely solidified, the template 12 is disassembled to form a corresponding expansion joint 2, such as Figure 3 shown.

[0037] Step S4, installing the elastic filling strip 3: The concrete layers 14 on both sides of the expansion joint 2 are both inserted with connecting rods 15, which can be expansion bolts or chemical bolts driven into the concrete layer 14, and one end of the connecting rod 15 away from the concrete layer 14 extends into the expansion joint 2, and then the pre-processed elastic filling strip 3 is installed in the expansion joint 2 along the length direction of the expansion joint 2 through the sealant, and the sealant is arranged on both sides of the elastic filling strip 3, and after solidification, a sealant layer 6 is formed, such as Figure 4 shown.

[0038] Reference Figure 4 , Figure 5 , wherein the elastic filling strip 3 specifically includes two mutually abutting first filling strips 31 and second filling strips 32 and an elastic rope 33 arranged between the first filling strip 31 and the second filling strip 32, and the surfaces of the first filling strip 31 and the second filling strip 32 close to each other are protruded with a plurality of convex strips 4 that are staggered and abutted in sequence, and the convex strips 4 are arranged along the entire length of the length direction of the elastic filling strip 3, and the convex strips 4 are provided with slits 5, and the slits 5 are arranged along the entire length of the length direction of the convex strip 4. In this embodiment, the cross section of the convex strip 4 is arranged in a V-shape, so that the gap after the first filling strip 31 and the second filling strip 32 abut is arranged in a broken line shape. Among them, the slits 5 are arranged at the tip of the convex strip 4, and extend respectively toward the surfaces of the first filling strip 31 and the second filling strip 32 that are away from each other, wherein the width of the slits 5 can gradually decrease in the direction away from the convex strip 4, that is, arranged in a V-shape, or arranged in a rectangular cross section, which is specifically arranged according to needs.

[0039] For easy distinction, the ridge 4 provided on the first filling strip 31 is the first ridge 41 , and the ridge 4 provided on the second filling strip 32 is the second ridge 42 . Correspondingly, the slit 5 provided on the first ridge 41 is the first slit 51 , and the slit 5 provided on the second ridge 42 is the second slit 52 .

[0040] Among them, the elastic rope 33 is arranged at the middle position of the first filling strip 31 and the second filling strip 32, and a plurality of elastic ropes 33 are arranged at intervals along the length direction of the elastic filling strip 3. The elastic rope 33 is used to pull the second filling strip 32 to move toward the first filling strip 31. The middle part of the elastic rope 33 is arranged at the connection between the two first convex strips 41 and is fixed to the first filling strip 31. The two ends of the elastic rope 33 are respectively connected to the upper second convex strip 42 on both side walls of the second slit 52.

[0041] Furthermore, in order to reduce the possibility of external water flowing through the gap between the sealant and the elastic filling strip 3 into the gap formed between the first filling strip 31 and the second filling strip 32, so as to cause aging at the convex strip 4. In this embodiment, the elastic filling strip 3 is provided with a shielding sheet 7. Specifically, the shielding sheet 7 is arranged on the upper surface of the second filling strip 32 and is arranged in an arc shape in a direction away from the second filling strip 32. The shielding sheet 7 is arranged along the entire length direction of the elastic filling strip 3. The thickness of both ends of the shielding sheet 7 is relatively thick. When the sealant on both sides is not solidified, the two sides of the shielding sheet 7 are inserted into the sealant on both sides to be fixed with the sealant layer 6.

[0042] Among them, for the installation between the connecting rod 15 and the elastic filling strip 3, in this embodiment, during the process of installing the elastic filling strip 3 in the expansion joint 2, the two ends of the connecting rod 15 are respectively inserted into the slots 311 opened on the opposite side walls of the first filling strip 31, and the slots 311 extend to the lower surface of the first filling strip 31; after installation, sealant is then filled between the elastic filling strip 3 and the concrete layers 14 on both sides, and the sealant is filled in the slots 311.

[0043] Furthermore, a first limiting member 16 is provided at the end of the connecting rod 15 away from the concrete layer 14. The first limiting member 16 can be a limiting rod or a limiting ring arranged perpendicular to the connecting rod 15, and is specifically arranged according to needs. Correspondingly, a slot 312 is provided on the top wall of the slot 311 for the first limiting member 16 to be embedded, and the sealant is filled in the slot 312.

[0044] When the concrete layer 14 expands with the change of temperature, the elastic filling strip 3 is squeezed, and the first slit 51 and the second slit 52 are compressed to be deformed. When the concrete layer 14 shrinks with the change of temperature, the two ends of the connecting rod 15 are respectively inserted into the concrete layer 14 and the elastic filling strip 3, so that when the concrete layer 14 shrinks, the elastic filling strip 3 is driven to deform along the width direction of the expansion joint 2, so as to improve the sealing state of the expansion joint 2.

[0045] Embodiment 2: Reference Figure 6 , Figure 7, which is different from the embodiment 1, is that the first filling strip 31 is provided with an adjustment component 8 for adjusting the height position of the middle part of the elastic rope 33. The adjustment component 8 specifically includes an abutment plate 81, a slide plate 82, a first spring 83, an adjustment rod 84 and a second stopper 85. Among them, the first filling strip 31 is provided with a slide groove 313 for sliding connection of the abutment plate 81 below the elastic rope 33, the length direction of the slide groove 313 is parallel to the height direction of the elastic filling strip 3, and the abutment plate 81 is fixedly connected to the middle part of the elastic rope 33. The slide plate 82 is arranged below the abutment plate 81 and is coaxially arranged with the abutment plate 81, the slide plate 82 is slidably connected to the slide groove 313, the first spring 83 is arranged between the abutment plate 81 and the slide plate 82, and the two ends of the first spring 83 are respectively fixedly connected to the surfaces of the abutment plate 81 and the slide plate 82 that are close to each other. Among them, the adjustment rod 84 is arranged above the abutment plate 81 and is coaxially arranged with the abutment plate 81. The adjustment rod 84 is inserted into the second slit 52 above, and the upper end of the adjustment rod 84 is fixedly connected to the top of the second slit 52. The adjustment rod 84 is used to drive the abutment plate 81 to move downward when the second elastic strip is pressed.

[0046] Among them, the second limit member 85 is used to limit the sliding of the slide plate 82. In this embodiment, the second limit member 85 is specifically a first limit block protruding from the side wall of the slide plate 82. The opposite side walls of the first limit block are provided with first guide surfaces 851. The first guide surface 851 extends to the lower surface of the first limit block. The opposite surfaces of the slide groove 313 are provided with first limit grooves 314 for the first limit block to be embedded. A plurality of first limit grooves 314 are arranged at intervals along the height direction of the slide groove 313.

[0047] Furthermore, due to the characteristics of the slit 5 itself, the width of the slit 5 itself decreases in the direction away from the convex strip 4, and it may not be easy to push the abutment plate 81 to push the slide plate 82 downward under the elastic force of the first spring 83 itself. Figure 8 The contact plate 81 is provided with a through slot 811 for the adjustment rod 84 to slide through along its thickness direction, and the adjustment rod 84 slides through the first spring 83 to contact the slide plate 82. The force is directly applied to the slide plate 82 to drive the slide plate 82 to move downward.

[0048] Embodiment 3: Reference Fig. 9 , Fig.10The difference from Example 2 is that the adjusting rod 84 includes a sleeve 841 fixed to the second filling strip 32 and a sliding rod 842 slidably inserted in the sleeve 841, the lower end of the sliding rod 842 is connected to the abutment plate 81 or penetrates the abutment plate 81 and is connected to the slide plate 82, and a third limit member 9 is provided on the sleeve 841 to limit the sliding of the sliding rod 842. In this embodiment, an installation groove 843 is provided on the inner wall of the sleeve 841, and the third limiting member 9 includes a second spring 91 built into the installation groove 843 and a second limiting block 92 fixedly connected to the second spring 91, and the end of the second spring 91 away from the second limiting block 92 is fixedly connected to the installation groove 843, and the outer peripheral wall of the slide rod 842 is provided with a second limiting groove 844 for the second limiting block 92 to slide and insert, wherein the second guide surfaces 921 arranged in a V-shape are provided on the opposite side walls of the second limiting block 92, so that the cross-section of the second limiting block 92 is triangular, and the cross-section of the second limiting groove 844 is a right-angled triangle. In this embodiment, a plurality of second limiting grooves 844 are arranged at intervals along the height direction of the slide rod 842, and the second spring 91 forces the second limiting block 92 to move toward the direction close to the second limiting groove 844.

[0049] The second filling strip 32 is pressed to apply a force to the sleeve. Since the sleeve follows the third limiting member 9 to limit the sliding of the sliding rod 842, the sliding rod 842 is driven downward to squeeze the sliding plate 82 downward. When the pressure applied to the second filling strip 32 is released, the sleeve rebounds with the second filling strip 32, and the second limiting block 92 cooperates with the second limiting groove 844 to slide out of the current second limiting groove 844, so that the sleeve rebounds to a certain height position with the second filling strip 32. At this time, the second limiting block 92 slides under the action of the second spring 91 and is inserted into the second limiting groove 844.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A roadbed slope construction process, characterized in that: The following steps are involved: Step S1, construction preparation: according to the drawings and the surveying and setting benchmark data and surveying marks provided by the resident supervision office engineer, conduct traverse survey, leveling survey and mid- and side pile survey of the roadbed, and summarize the surveying results; Step S2, construction layout: Use the coordinate layout method to lay out the roadbed centerline and the fill slope foot line, and compare the height and calculate the slope foot position according to the setting drawing; Step S3, slope construction: laying out the lines and brushing the slope, laying the cushion layer (11) and then scraping it flat, installing the template (12) according to the size of the expansion joint (2) to be reserved, and then pouring concrete. After the concrete is dry to form a concrete layer (14), the template (12) is removed; Step S4, installing the elastic filling strip (3): connecting rods (15) are inserted into the concrete layers (14) on both sides of the expansion joint (2), and one end of the connecting rod (15) away from the concrete layer (14) extends into the expansion joint (2), and then the pre-processed elastic filling strip (3) is installed in the expansion joint (2) along the length direction of the expansion joint (2) through the sealant; wherein the elastic filling strip (3) includes a first filling strip (31) and a second filling strip (32) abutting against each other, and the surfaces of the first filling strip (31) and the second filling strip (32) close to each other are both protruded with a plurality of The elastic filling strip (3) is provided with convex strips (4) which are staggered and abutted in sequence, the convex strips (4) are arranged along the entire length direction of the elastic filling strip (3), and the convex strips (4) are provided with slits (5), which are arranged along the entire length direction of the convex strip (4); wherein, during the process of installing the elastic filling strip (3) on the expansion joint (2), the two ends of the connecting rod (15) are respectively inserted into the slots (311) opened on the opposite side walls of the first filling strip (31); after the installation, a sealant is then filled between the elastic filling strip (3) and the concrete layers (14) on both sides, and the sealant is filled in the slots (311).

2. A roadbed slope construction process according to claim 1, characterized in that: In step S4, a first stopper (16) is provided at the end of the connecting rod (15) away from the concrete layer (14), a slot (312) for the first stopper (16) to be engaged is provided on the top wall of the slot (311), the sealant is filled in the slot (312), and the slot (311) extends to the lower surface of the first filling strip (31).

3. A roadbed slope construction process according to claim 1, characterized in that: The cross section of the convex strip (4) is arranged in a V shape, and the slit (5) is arranged at the tip of the convex strip (4) and extends towards the surfaces of the first filling strip (31) and the second filling strip (32) which are away from each other.

4. A roadbed slope construction process according to claim 1, characterized in that: The convex strip (4) arranged on the first filling strip (31) is a first convex strip (41), and the convex strip (4) arranged on the second filling strip (32) is a second convex strip (42); correspondingly, the slit (5) arranged on the first convex strip (41) is a first slit (51), and the slit (5) arranged on the second convex strip (42) is a second slit (52); the elastic filling strip (3) further comprises an elastic rope (33) arranged between the first filling strip (31) and the second filling strip (32), and a plurality of the elastic ropes (33) are arranged at intervals along the length direction of the elastic filling strip (3); the elastic rope (33) is used to pull the second filling strip (32) to move in a direction close to the first filling strip (31), the middle part of the elastic rope (33) is arranged at the connection between the two first convex strips (41), and the two ends of the elastic rope (33) are respectively connected to the two side walls of the second convex strip (42) located at the second slit (52).

5. A roadbed slope construction process according to claim 4, characterized in that: The first filling strip (31) is provided with an adjustment component (8) for adjusting the height position of the middle portion of the elastic rope (33).

6. A roadbed slope construction process according to claim 5, characterized in that: The first filling strip (31) is provided with a slide groove (313) below the elastic rope (33); the adjustment assembly (8) comprises an abutting plate (81) slidably connected to the slide groove (313), a slide plate (82) provided below the abutting plate (81), a first spring (83) provided between the abutting plate (81) and the slide plate (82), an adjustment rod (84) provided above the abutting plate (81) for pushing the abutting plate (81) downward, and a second limiter (85) for limiting the sliding movement of the slide plate (82); the slide plate (82) is slidably connected to the slide groove (313); the abutting plate (81) is connected to the middle part of the elastic rope (33); the lower end of the adjustment rod (84) is fixedly connected to the second slit (52), and the second filling strip (32) is pressed to drive the adjustment rod (84) to push the abutting plate (81) downward.

7. A roadbed slope construction process according to claim 6, characterized in that: The second limiting member (85) comprises a first limiting block protruding from the side wall of the slide plate (82), the first limiting block is provided with first guide surfaces (851) on opposite side walls thereof, the first guide surfaces (851) extending to the lower surface of the first limiting block, and the first limiting grooves (314) for the first limiting block to be engaged are provided on opposite sides of the slide groove (313).

8. A roadbed slope construction process according to claim 6, characterized in that: The abutment plate (81) is penetrated by a through slot (811) for the adjustment rod (84) to slide through, and the adjustment rod (84) is slidably inserted through the first spring (83) to abut against the slide plate (82).

9. A roadbed slope construction process according to claim 6, characterized in that: The adjusting rod (84) comprises a sleeve (841) fixed to the second filling strip (32) and a sliding rod (842) slidably inserted into the sleeve (841); the lower end of the sliding rod (842) is connected to the abutment plate (81) or is inserted through the abutment plate (81) and connected to the slide plate (82); and a third limiting member (9) is provided on the sleeve (841) for limiting the sliding of the sliding rod (842).

10. A roadbed slope construction process according to claim 1, characterized in that: In step S4, the elastic filling strip (3) is provided with a shielding sheet (7), and the shielding sheet (7) is arranged along the entire length direction of the elastic filling strip (3). When the sealant on both sides is not solidified, the two sides of the shielding sheet (7) are inserted into the sealant on both sides.

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