Bridge sidewalk structure and construction method thereof

Abstract

The invention discloses a bridge sidewalk structure and a construction method thereof, and belongs to the technical field of bridge construction. The bridge sidewalk structure comprises a base, curbs and a beam plate, wherein the base is provided with a first tenon; the curb is provided with a second tenon; first concave tenons are arranged at the two ends of the beam plate, the first concave tenons are matched with the first tenons and the second tenons, so that the beam plate is connected with the base and the curb, and the base, the curb and the beam plate can be prefabricated. The waterproof layer is laid on the beam plate, and the spring steel pipe and the pervious concrete pavement layer are sequentially laid on the waterproof layer. The structure can realize on-site rapid installation, shortens the construction period, reduces pollution to the environment, is convenient to maintain and dismantle, can be repeatedly used, and reduces the waste amount. And the pervious concrete pavement layer and the sidewalk pavement layer of the roadbed section are kept unified, so that the attractiveness of the bridge floor is ensured. The waterproof layer is laid below the spring steel pipe, and rainwater can be prevented from continuously infiltrating and soaking the pipeline.

Description

Technical Field

[0001] The invention relates to the technical field of bridge construction, and in particular to a bridge sidewalk structure and a construction method thereof. Background Art

[0002] The sidewalk on a bridge refers to the part of the road that is separated by curbs, guardrails or other similar facilities and is dedicated to pedestrians. It is usually distinguished from motor vehicle lanes and non-motor vehicle lanes to ensure the safety of pedestrians. The sidewalk on a bridge has functions such as pedestrians crossing the bridge, pipelines crossing the bridge, and vehicle collision prevention. It is usually constructed by on-site formwork casting, generally consisting of cast-in-place curbs, cast-in-place railing foundations, sidewalk slabs, pavement layers, etc. The cast-in-place method has many construction processes, long cycles, and serious environmental pollution, making it difficult to quickly construct.

[0003] Moreover, the sidewalks on bridges generally adopt a cross slope drainage method to drain the rainwater on the road horizontally to the drainage holes on the bridge. The drainage holes are generally set on the outside of the carriageway. Since there are cast-in-place curbs on both sides of the sidewalks on the bridge, rainwater cannot be discharged once it penetrates into the sidewalk. In order to prevent rainwater from seeping into the sidewalk, the conventional technical means are to cast an impermeable concrete layer on the sidewalk slab or fill the pipeline space with concrete to prevent rainwater from seeping into the sidewalk and affecting the durability of concrete and pipelines. However, these two treatment methods will increase the second-phase constant load on the bridge, making it difficult to maintain in the later stage. In addition, there is a difference in appearance between the impermeable concrete surface layer of the sidewalk on the bridge and the permeable concrete surface layer of the roadbed section, which affects the appearance of the bridge deck. In addition, in major and medium bridge repair projects, the sidewalk structure often needs to be demolished and rebuilt due to the new bridge section. The cast-in-place sidewalk structure has problems such as difficulty in demolition, large amount of engineering waste, and inability to reuse during the demolition and reconstruction process. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a bridge sidewalk structure and a construction method thereof. The bridge sidewalk structure can be prefabricated in a factory, quickly installed on site, shorten the construction period, be easy to maintain, convenient to dismantle, and can be reused. It can also quickly drain water from the sidewalk pavement to prevent rainwater from seeping into the sidewalk. It can also maintain uniformity with the paving of the sidewalk in the roadbed section, thereby ensuring the aesthetics of the bridge deck.

[0005] The present invention provides a bridge sidewalk structure, comprising:

[0006] A base, wherein the base is provided with a first tenon;

[0007] A rim stone, wherein the rim stone is provided with a second tenon;

[0008] A beam plate, wherein both ends of the beam plate are provided with first tenons, wherein the first tenons are configured to cooperate with the first tenons and the second tenons, so that the beam plate is connected to the base and the curbstone, and the base, the curbstone and the beam plate can all be prefabricated;

[0009] The beam plate further comprises a first beam plate, a second beam plate, a third beam plate and a fourth beam plate, the first beam plate and the third beam plate are provided with a third convex tenon, the second beam plate and the fourth beam plate are provided with a second concave tenon, the third convex tenon cooperates with the second concave tenon, so that the beam plates of multiple sections are assembled together and installed on the base and the curbstone;

[0010] A permeable concrete paving layer, a spring steel pipe and a waterproof layer, wherein the waterproof layer is laid on the beam slab, and the spring steel pipe and the permeable concrete paving layer are laid on top of the waterproof layer in sequence.

[0011] In some embodiments, the base includes a first corbel and a first cavity, the first corbel is connected to the first tenon, and the edge stone includes a second corbel, the second corbel is connected to the second tenon. The first corbel and the second corbel can provide support for the beam plate

[0012] In some embodiments, the width of the first tenon is half the width of the first corbel, the height of the first tenon is half the thickness of the beam plate, the width of the second tenon is half the width of the second corbel, and the height of the second tenon is half the thickness of the beam plate.

[0013] In some embodiments, the curbstone further includes a second cavity, a first drainage hole, and a second drainage hole, wherein both ends of the first drainage hole are connected to the spring steel tube and the second cavity respectively, the first drainage hole is inclined toward the second cavity, and the second drainage hole is connected to the second cavity and is inclined toward the second cavity. The first drainage hole is inclined and is inclined toward the second cavity, so that rainwater on the sidewalk flows into the second cavity. The bottom of the second drainage hole is flush with the upper surface of the roadway and is inclined toward the second cavity, and the slope is the same as the slope of the roadway, which is conducive to rainwater on the roadway flowing into the second cavity.

[0014] In some embodiments, the width of the first tenon is the same as that of the second tenon, and the depth of the first tenon is half of the depth of the beam plate; the cross-sectional shape of the third tenon and the second tenon is a trapezoid, the length of the top end of the third tenon is half of the thickness of the beam plate, and the protruding length of the third tenon is greater than half of the thickness of the beam plate.

[0015] In some embodiments, the beam-slab includes piers, and a U-shaped groove is formed between the piers, the base and the curbstone, and the U-shaped groove is used for laying pipelines; a leveling layer is laid between the piers and the main beam, and the leveling layer and the piers are leveled by applying cement mortar; the beam-slab is also provided with lifting rings, which are located at the four corner points of the beam-slab, and their roots are anchored in the beam-slab.

[0016] In some embodiments, a drainage pipe is provided in the main beam, and the drainage pipe is connected to the second cavity; the base, the curb and the beam slab are all provided with holes, the main beam is anchored with steel bars, the steel bars are inserted into the holes, and concrete is injected into the holes, so that the base, the curb, the beam slab and the main beam are connected, and the diameter of the hole is larger than the diameter of the steel bars.

[0017] In some embodiments, the height of the base is higher than the height of the curbstone, two adjacent bases are dry-jointed, and two adjacent curbstones are also dry-jointed; asphalt filling material is applied to the lap joints between the beam slab, the base and the curbstone; the spring steel pipes are arranged at intervals along the longitudinal direction of the bridge and are fully distributed along the beam slab in the transverse direction. Dry-jointing can improve the sealing and thermal insulation performance of the building, and asphalt filling material can fill the tiny gaps in the mixture, reduce the void ratio, improve the density and stability of the mixture, and can also prevent water and debris from entering the structure and affecting the durability of the structure.

[0018] In some embodiments, it also includes a first guardrail and a second guardrail; the base is provided with a first connecting piece, and the second guardrail is connected to the first connecting piece; the curb is provided with a second connecting piece, and the first guardrail is connected to the second connecting piece.

[0019] A bridge sidewalk construction method, the bridge sidewalk construction method comprising:

[0020] Prefabricate the base, curbstone and beam slab, construct the main beam, and pre-embed the steel bars and the drainage pipe on the main beam;

[0021] Install the base, insert the pre-buried steel bar into the hole, and pour concrete into the hole to connect the steel bar to the base;

[0022] pouring the leveling layer of the bridge deck;

[0023] Install the curbstone, insert the pre-buried steel bar into the hole, and pour concrete into the hole to connect the steel bar to the curbstone;

[0024] laying the pipeline;

[0025] Hoisting the beam slab, hoisting the second section beam slab, the third section beam slab, the fourth section beam slab and the first section beam slab in sequence, inserting the embedded steel bars into the holes in the piers, pouring concrete into the holes to connect the steel bars with the beam slab, and applying the asphalt filling material at the joints between the beam slab, the base and the curb;

[0026] Apply the waterproof layer on the beam slab;

[0027] Laying the spring steel pipe and the permeable concrete pavement layer in sequence on the waterproof layer;

[0028] Install the first guardrail and the second guardrail.

[0029] Beneficial effects of the present invention:

[0030] 1. The base, curb and beam slab of the bridge sidewalk structure provided by the present invention are all prefabricated parts and can be prefabricated in advance in the factory, which solves the problems of the cast-in-place method with many construction steps, long construction period and serious environmental pollution. The factory prefabrication method can achieve rapid on-site installation, shorten the construction period, facilitate maintenance and convenient dismantling.

[0031] 2. The beams and slabs of the bridge sidewalk structure include the first beam slab, the second beam slab, the third beam slab and the fourth beam slab. The beam slabs are provided with convex tenons and concave tenons. Through the cooperation of the convex tenons and concave tenons, the beams and slabs of four different structures are assembled together for easy installation. Moreover, the beams and slabs are easy to dismantle during the process of dismantling and reconstruction, and the dismantled beams and slabs can be reused.

[0032] 3. A waterproof layer, spring steel pipe and permeable concrete pavement are laid on the beams and slabs of the bridge sidewalk structure in sequence. The permeable concrete pavement is consistent with the sidewalk pavement of the roadbed section, ensuring the aesthetics of the bridge deck. Rainwater penetrates into the bridge sidewalk through the permeable concrete pavement, flows into the spring steel pipe, and is discharged into the cavity of the curbstone through the spring steel pipe, and then discharged through the drainage pipe, solving the problem of water on the surface of the bridge sidewalk penetrating into it. The waterproof layer is laid under the spring steel pipe to prevent rainwater from continuing to seep in and soaking the pipeline.

[0033] 4. The base and curb of the bridge sidewalk structure are equipped with corbels, which can increase the supporting force of the base and curb on the beam and slab, making the bridge sidewalk structure more stable.

[0034] 5. A second cavity, a first drainage hole and a second drainage hole are provided in the curb of the sidewalk structure of the bridge. Rainwater in the sidewalk area flows into the second cavity through the first drainage hole, and rainwater in the carriageway area flows into the second cavity through the second drainage hole. The rainwater in the second cavity flows into the drain pipe through the bottom through hole and is discharged through the drain pipe, thereby realizing rapid drainage of the sidewalk area and the carriageway area.

[0035] 6. The asphalt filler is applied to the lap joints between the beams and slabs of the bridge sidewalk structure and the base and curbstones, which can fill the tiny gaps in the mixture, reduce the void ratio, improve the density and stability of the mixture, and prevent water and debris from entering the structure and affecting its durability. The first guardrail and the second guardrail are installed on the curbstone and the base respectively to protect the safety of pedestrians. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A cross-sectional view of a bridge sidewalk structure provided by an embodiment of the present invention;

[0037] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0038] Figure 3 A cross-sectional view of a bridge sidewalk structure from another perspective provided by an embodiment of the present invention;

[0039] Figure 4 A left side view of the bridge sidewalk structure beam and slab splicing state provided by an embodiment of the present invention;

[0040] In the figure: 1. main beam; 2. base; 21. first corbel; 22. first tenon; 23. first cavity; 24. first connecting piece; 3. curbstone; 31. second corbel; 32. second tenon; 33. second cavity; 34. second connecting piece; 35. first drainage hole; 36. second drainage hole; 4. beam-slab; 41. first section beam-slab; 42. second section beam-slab; 43. third section beam-slab; 44. fourth section beam-slab; 45. pier; 46. third tenon; 47. first concave tenon; 48. second concave tenon; 5. cement mortar; 6. permeable concrete pavement; 7. spring steel pipe; 8. waterproof layer; 9. asphalt filling material; 10. first guardrail; 11. second guardrail; 12. pipeline; 13. steel bar; 14. hole; 15. lifting ring; 16. drainage pipe; 17. leveling layer. DETAILED DESCRIPTION

[0041] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions 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 cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] The present invention provides a bridge sidewalk structure, which is laid in the sidewalk area of ​​the bridge and has the functions of providing pedestrian passage, pipeline crossing the bridge, vehicle collision prevention, etc., and can ensure the safety of pedestrians.

[0045] like Figures 1 to 4 As shown, in some embodiments, the bridge sidewalk structure includes a prefabricated base 2, a curb 3 and a beam slab 4. The base 2 is located on the side of the bridge sidewalk structure close to the suspended end, providing support for the bridge sidewalk structure. The curb 3 is located on the side of the bridge sidewalk structure close to the roadway, used to separate the roadway from the sidewalk, and has the function of preventing vehicles from collision. The beam slab 4 is located between the base 2 and the curb 3, and the two ends of the beam slab 4 are respectively connected to the base 2 and the curb 3, and the upper part of the beam slab 4 is a sidewalk area for pedestrians to pass.

[0046] In some embodiments, the bridge sidewalk structure also includes a permeable concrete pavement layer 6, a spring steel pipe 7 and a waterproof layer 8. The waterproof layer 8 is laid above the beam slab 4 to prevent rainwater from seeping into the interior of the sidewalk structure. The spring steel pipe 7 and the permeable concrete pavement layer 6 are laid in sequence above the waterproof layer 8. Along the longitudinal direction of the beam slab 4, the spring steel pipe 7 is arranged below the permeable concrete pavement layer 6 at a certain distance. Along the transverse direction of the beam slab 4, the spring steel pipe 7 is fully distributed, and its length is the same as the transverse length of the beam slab 4. The spring steel pipe 7 can not only discharge the infiltrated water in the road and bridge concrete surface layer, but also its unique steel wire spiral reinforcement structure ensures that the pipe can withstand the rolling of construction and transportation vehicles, has strong compressive resistance and rust resistance, and has a long service life. Rainwater penetrates into the spring steel pipe 7 from under the permeable concrete pavement layer 6, and flows from the spring steel pipe 7 to the drainage hole for discharge, realizing drainage of the sidewalk area.

[0047] Optionally, the height of the base 2 is higher than that of the curb 3 , so that the beam 4 is installed at an angle, so that rainwater above the sidewalk flows into the roadway side, and a small amount of rainwater that penetrates into the sidewalk is discharged through the spring steel pipe 7 .

[0048] Optionally, the permeable concrete pavement layer 6 is paved with permeable concrete, which is conducive to the rainwater accumulated above the sidewalk to penetrate into the spring steel pipe 7 for discharge. At the same time, the use of permeable concrete for paving can make the outer surface of the bridge deck sidewalk the same as the outer surface of the sidewalk of the roadbed section, so that the paving of the two remains unified, ensuring the aesthetics of the bridge deck.

[0049] Furthermore, in some embodiments, the base 2 is a block structure with a first cavity 23 inside, and the first cavity 23 is a square structure. The first cavity 23 can not only reduce the weight of the base 2, but also save materials and reduce production costs. A first corbel 21 is provided on the side of the base 2 close to the beam 4, and a first tenon 22 is provided on the first corbel 21. The base 2 is connected to the beam 4 through the first tenon 22, and the first corbel 21 can provide support for the beam 4. A connector 24 is pre-embedded at the top of the base 2 for connecting other facilities on the bridge. The base 2 is provided with a plurality of holes 14 on both sides of the first cavity 23, and the holes 14 are used to inject concrete to connect the base 2 to the bridge main beam 1.

[0050] Specifically, in this embodiment, the width of the first tenon 22 is 1 / 2 of the width of the first corbel 21, and the height of the first tenon 22 is 1 / 2 of the thickness of the beam 4, which can make the connection between the beam 4 and the base 2 more firmly, strengthen the supporting force of the first corbel 21 on the beam 4, and prevent one side from being too thin and causing collapse.

[0051] Further, in some embodiments, a second corbel 31 and a second tenon 32 are provided on one side of the curb 3 close to the beam 4, the second tenon 32 is located above the second corbel 31, the curb 3 is connected to the beam 4 through the second tenon 32, and the second corbel 31 provides support for the beam 4. Specifically, in this embodiment, the width of the second tenon 32 is 1 / 2 of the width of the second corbel 31, and the height of the second tenon 32 is 1 / 2 of the thickness of the beam 4, which can make the curb 3 and the beam 4 more firmly connected, and strengthen the support of the curb 3 to the beam 4.

[0052] Further, in some embodiments, a second cavity 33 is provided inside the curb 3, and the second cavity 33 is used as a drainage pipeline in the longitudinal direction of the bridge. First drainage holes 35 are arranged at intervals on the side of the curb 3 close to the beam 4, one end of the first drainage hole 35 is connected to the spring steel pipe 7, and the end away from the spring steel pipe 7 is connected to the second cavity 33. The first drainage hole 35 is arranged obliquely, and the bottom of the hole close to the beam 4 is flush with the top of the beam 4, and slopes toward the second cavity 33, so that rainwater on the sidewalk flows into the second cavity 33. Second drainage holes 36 are arranged at intervals on the side of the curb 3 close to the roadway, one end of the second drainage hole 36 is connected to the upper surface of the roadway, and the other end is connected to the second cavity 33. The bottom of the second drainage hole 36 is flush with the upper surface of the roadway, and slopes toward the second cavity 33, and the slope is the same as the slope of the roadway, which is conducive to rainwater on the roadway flowing into the second drainage hole 36 and into the second cavity 33 through the second drainage hole 36. The bottom of the second cavity 33 is provided with through holes at a certain interval, and a drainage pipe 16 is provided below the through holes. The drainage pipe 16 is arranged perpendicular to the lower bottom surface of the curb 3, passes through the main beam 1, and extends to the bottom of the main beam 1. A part of the rainwater on the sidewalk flows to the side of the carriageway, flows into the second drainage hole 36 together with the rainwater on the carriageway, and flows into the second cavity 33 through the second drainage hole 36; another part of the rainwater that penetrates into the inside of the sidewalk enters the spring steel pipe 7, flows into the first drainage hole 35 from the spring steel pipe 7, and flows into the second cavity 33 through the first drainage hole 35. The rainwater collected on both sides flows into the drainage pipe 16 from the through hole at the bottom of the second cavity 33, and finally is discharged to the outside of the bridge through the drainage pipe 16, and is connected to the nearest rainwater well through the drainage pipes on the main beam and the pier.

[0053] Furthermore, in this embodiment, a second connecting member 34 is provided at the top of the curb 3 for connecting other facilities on the bridge. The curb 3 is provided with a plurality of holes 14 at intervals on both sides of the second cavity 23 for connecting the curb 3 and the main beam 1 .

[0054] Optionally, the cross-section of the first drainage hole 35 and the second drainage hole 36 may be circular or polygonal. Preferably, the cross-section of the first drainage hole 35 is circular, and its diameter is greater than or equal to the diameter of the spring steel tube 7, so as to facilitate the connection between the first drainage hole 35 and the spring steel tube 7; the cross-section of the second drainage hole 36 is rectangular, because the bottom surface of the second drainage hole 36 is flush with the roadway, it is set to be rectangular, so as to facilitate the rapid drainage of rainwater at the bottom of the roadway.

[0055] Further, in this embodiment, the beam 4 is mounted on the first corbel 21 of the base 2 and the second corbel 31 of the curb 3, and first tenons 47 are provided at both ends of the beam 4, and the positions of the first tenons 47 at both ends of the beam 4 correspond to the first tenons 22 and the second tenons 32. Optionally, the width and depth of the first tenons 47 can be adapted according to the width and height of the first tenons 22 and the second tenons 32. Specifically, in this embodiment, the width of the first tenon 47 is the same as that of the first tenon 22, and the depth of the first tenon 47 is the same as that of the first tenon 22, and both are 1 / 2 of the thickness of the beam 4. A buttress 45 is provided on one side of the beam 4 close to the main beam 1, and the buttress 45 can improve the lateral spanning capacity of the beam 4 and provide support for the beam 4. A hole 14 is provided in the buttress 45 for pouring concrete to connect the beam 4 to the main beam 1. A leveling layer 17 is provided between the main beam 1 and the pier 45. The leveling layer 17 can adjust the bridge deck height, transfer the load, distribute the vehicle load on the bridge deck to the bridge deck or the cushion layer, protect the bridge deck from the direct load, and can also be waterproof and anti-corrosive, thereby extending the service life of the bridge. The pier 45 is installed above the leveling layer 17, and is leveled by applying cement mortar 5 on the bottom of the pier 45. A lifting ring 15 is provided on the top of the pier 45, and the lifting ring 15 is arranged at the four corners of the beam slab 4 to facilitate the lifting of the beam slab. Preferably, the lifting ring 15 is made of U-shaped hot-rolled steel bars, and the root of the lifting ring 15 is anchored in the beam slab 4. A plurality of U-shaped grooves with downward openings are formed between the pier 45 and the base 2 and the curb 3. The U-shaped grooves are used to lay pipelines 12, which is convenient for the pipelines to cross the bridge, and a waterproof layer 8 is laid above the beam slab 4 to prevent rainwater from infiltrating and protect the pipelines 12 from being soaked and corroded by rainwater.

[0056] like Figure 4As shown, in some embodiments, the beam plate 4 can be divided into four structures according to its different structures, namely, the first beam plate 41, the second beam plate 42, the third beam plate 43 and the fourth beam plate 44. A third tenon 46 is provided on one side of the first beam plate 41 along its longitudinal direction. The third tenon 46 is located at the top of the first beam plate 41 and protrudes outward. The side of the first beam plate 41 away from the third tenon 46 is a plane. The second beam plate 42 has the opposite structure to the first beam plate 41. A second concave tenon 48 is provided on one side of the second beam plate 42 along its longitudinal direction. The second concave tenon 48 is located at the top of the second beam plate 41 and is concave toward the inside of the beam plate 4. The cross-sectional shape of the second concave tenon 48 is the same as that of the third tenon 46, and the two can fit each other. The third beam plate 43 is provided with third convex tenons 46 on both sides along the longitudinal direction thereof and located at the top of the third beam plate 43 . The fourth beam plate 44 is provided with second concave tenons 48 on both sides along the longitudinal direction thereof and located at the top of the fourth beam plate 44 .

[0057] In this embodiment, the beam 4 can be prefabricated in the factory in advance, and the first beam 41, the second beam 42, the third beam 43 and the fourth beam 44 are spliced ​​along the bridge direction to form a sidewalk on the bridge. During installation, the second beam 42 is first hoisted in place and overlapped on the first corbel 21 and the second corbel 31, and then the third beam 43 and the fourth beam 44 are hoisted in sequence, and the third convex tenon 46 is matched with the second concave tenon 48, and finally the first beam 41 is hoisted, and the third convex tenon 46 of the first beam 41 is matched with the second concave tenon 48 of the fourth beam 44, so as to form a sidewalk structure on the bridge, and each bridge sidewalk structure only needs one first beam 41 and a second beam 42, and at least one third beam 43 and a fourth beam 44 are needed, and the number of the third beam 43 and the fourth beam 44 can be adapted according to the longitudinal length of the bridge.

[0058] Specifically, in this embodiment, the flat sides of the first section beam plate 41 and the second section beam plate 42 face the outside of the bridge, which can ensure the overall aesthetics of the bridge.

[0059] Specifically, in this embodiment, the cross-sectional shape of the third tenon 46 is a right-angled trapezoid, the length of the trapezoidal top surface is half the thickness of the beam 4, and the protruding length of the third tenon 46 is half the thickness of the beam 4. Preferably, the protruding length of the third tenon 46 is 50 mm.

[0060] In some embodiments, the bridge pedestrian structure further includes a first guardrail 10 and a second guardrail 11. The first guardrail 10 is installed on the side close to the roadway and welded to the second connecting member 34, which can intercept vehicles that hit the pedestrian walkway and protect the safety of pedestrians. The second guardrail 11 is installed at one end of the suspended side of the bridge and welded to the first connecting member 24, which can prevent pedestrians from stepping on the edge of the bridge and falling into the river. The first guardrail 10 and the second guardrail 11 are both used to protect the safety of pedestrians.

[0061] In some embodiments, a plurality of steel bars 13 are embedded in the main beam 1 of the bridge, and the anchoring depth thereof is set according to the specification requirements. The diameter of the holes 14 on the base 2, the curb 3 and the beam slab 4 is larger than the diameter of the steel bars 13 embedded in the main beam 1, and the diameter thereof can be set according to the relevant specification requirements. During installation, the steel bars 13 anchored in the main beam 1 are inserted into the holes 14, and concrete is poured into the holes 14, thereby achieving the connection between the base 2, the curb 3 and the beam slab 4 and the main beam 1.

[0062] Specifically, in this embodiment, the base 2, the curb 3 and the beam slab 4 can all be prefabricated in the factory according to the needs. When the bridge sidewalk needs to be laid, they can be transported to the bridge and assembled. They can be quickly installed on site, shorten the construction period, are easy to maintain, easy to dismantle, and can be reused. The two adjacent bases 2 are spliced ​​by dry seams, and the two adjacent curbs 3 are also spliced ​​by dry seams. Dry seam splicing refers to filling and sealing with specific materials at the joints to prevent water penetration or leakage, which can improve the sealing and thermal insulation performance of the building. The two adjacent beam slabs 4 are connected by the matching of convex tenons and concave tenons, with high connection strength and good sealing effect. Asphalt filling material 9 is applied in the lap joints between the beam slab 4 and the base 2 and the curb 3. The asphalt filling material 9 can fill the tiny gaps in the mixture, reduce the void ratio, improve the density and stability of the mixture, and can also be waterproof to prevent moisture and debris from entering the structure and affecting the durability of the structure.

[0063] The present application also provides a construction method for a bridge sidewalk structure, comprising the following steps:

[0064] Step 1: Prefabricate the base 2, curb 3 and beam slab 4 in the factory, install the lifting ring 15 on the beam slab 4, and transport them to the construction site to construct the bridge main beam 1, and embed the steel bar 13 and drainage pipe 16 on the main beam 1.

[0065] Step 2: Install the base 2, insert the steel bars 13 embedded in the main beam 1 into the holes 14 of the base 2, and pour concrete into the holes 14 to connect the steel bars 13 to the base 2, thereby achieving the connection between the base 2 and the bridge main beam 1.

[0066] Step 3: Pour the bridge deck concrete leveling layer 17.

[0067] Step 4: Install the curb 3, insert the steel bars 13 embedded in the main beam 1 into the holes 14 of the curb 3, and pour concrete into the holes 14 to connect the steel bars 13 to the curb 3, thereby achieving the connection between the curb 3 and the bridge main beam 1.

[0068] Step 5: Laying the bridge pipeline 12.

[0069] Step 6: Hoist the beam 4. First, hoist the second beam 42 into place and overlap it on the first corbel 21 of the base 2 and the second corbel 31 of the curb 3. Then, hoist the third beam 43 and the fourth beam 44 in sequence, and make the third tenon 46 fit with the second tenon 48. Finally, hoist the first beam 41, and make the third tenon 46 of the first beam 41 fit with the second tenon 48 of the fourth beam 44. The first tenon 47 of the beam 4 is butted with the tenons on the first corbel 21 and the second corbel 31. Apply cement mortar 5 to the bottom of the pier 45, insert the steel bar 13 embedded in the main beam 1 into the hole 14 in the pier 45, pour concrete into the hole 14, connect the steel bar 13 with the pier 45, and thus realize the connection between the beam 4 and the bridge main beam 1. Apply asphalt filling material 9 at the joints between the beam 4 and the base 2 and the curb 3.

[0070] Step 7: Apply waterproof layer 8 on beam slab 4.

[0071] Step 8: Arrange spring steel pipes 7 at a certain interval on the waterproof layer 8, connect one end of the spring steel pipe 7 to the first drainage hole 35, and then spread the permeable concrete pavement layer 6 on the spring steel pipe 7.

[0072] Step 9: Install the first guardrail 10 and the second guardrail 11.

[0073] This construction method can not only achieve rapid installation on site, shorten the construction period, and facilitate maintenance, but also is easy to dismantle and reuse in demolition and reconstruction projects. The permeable concrete pavement layer is laid on the sidewalk surface, so that the surface of the bridge sidewalk is consistent with the pavement of the roadbed section, ensuring the aesthetics of the road surface.

[0074] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A bridge sidewalk structure, characterized in that: include: A base (2), wherein the base (2) is provided with a first tenon (22); A curb stone (3), wherein the curb stone (3) is provided with a second tenon (32); A beam plate (4), wherein both ends of the beam plate (4) are provided with first tenons (47), wherein the first tenons (47) are configured to cooperate with the first tenons (22) and the second tenons (32) so that the beam plate (4) is connected to the base (2) and the curb (3), and the base (2), the curb (3) and the beam plate (4) can all be prefabricated; The beam plate (4) further comprises a first beam plate (41), a second beam plate (42), a third beam plate (43) and a fourth beam plate (44); the first beam plate (41) and the third beam plate (43) are provided with a third convex tenon (46); the second beam plate (42) and the fourth beam plate (44) are provided with a second concave tenon (48); the third convex tenon (46) cooperates with the second concave tenon (48) so that the plurality of beam plates (4) are assembled together and installed on the base (2) and the curb stone (3); A permeable concrete pavement layer (6), a spring steel pipe (7) and a waterproof layer (8), wherein the waterproof layer (8) is laid on the beam slab (4), and the spring steel pipe (7) and the permeable concrete pavement layer (6) are laid in sequence on top of the waterproof layer (8).

2. A bridge walkway structure according to claim 1, characterized in that: The base (2) comprises a first corbel (21) and a first cavity (23), wherein the first corbel (21) is connected to the first tenon (22), and the curb (3) comprises a second corbel (31), wherein the second corbel (31) is connected to the second tenon (32).

3. A bridge walkway structure according to claim 2, characterized in that: The width of the first tenon (22) is half of the width of the first corbel (21), the height of the first tenon (22) is half of the thickness of the beam plate (4), the width of the second tenon (32) is half of the width of the second corbel (31), and the height of the second tenon (32) is half of the thickness of the beam plate (4).

4. A bridge walkway structure according to claim 1, characterized in that: The curbstone (3) further comprises a second cavity (33), a first drainage hole (35) and a second drainage hole (36); two ends of the first drainage hole (35) are respectively connected to the spring steel tube (7) and the second cavity (33); the first drainage hole (35) is inclined toward the second cavity (33); and the second drainage hole (36) is connected to the second cavity (33) and is inclined toward the second cavity (33).

5. A bridge walkway structure according to claim 4, characterized in that: The width of the first concave tenon (47) is the same as that of the second convex tenon (22), and the depth of the first concave tenon (47) is half the depth of the beam plate (4); The cross-sectional shapes of the third tenon (46) and the second tenon (48) are trapezoidal, the length of the top end of the third tenon (46) is half the thickness of the beam plate (4), and the protruding length of the third tenon (46) is greater than half the thickness of the beam plate (4).

6. A bridge sidewalk structure according to claim 5, characterized in that: The beam plate (4) comprises a buttress (45), wherein a U-shaped groove is formed between the buttress (45), the base (2) and the curb (3), and the U-shaped groove is used for laying pipelines (12); A leveling layer (17) is laid between the buttress (45) and the main beam (1), and cement mortar (5) is applied between the leveling layer (17) and the buttress (45) for leveling; The beam slab (4) is also provided with lifting rings (15), and the lifting rings (15) are located at four corner points of the beam slab (4), and the roots of the lifting rings (15) are anchored in the beam slab (4).

7. A bridge walkway structure according to claim 6, characterized in that: A drainage pipe (16) is provided in the main beam (1), and the drainage pipe (16) is connected to the second cavity (33); The base (2), the curb (3) and the beam slab (4) are all provided with holes (14); a steel bar (13) is anchored in the main beam (1); the steel bar (13) is inserted into the hole (14), and concrete is injected into the hole (14) so ​​that the base (2), the curb (3), the beam slab (4) and the main beam (1) are connected; the diameter of the hole (14) is greater than the diameter of the steel bar (13).

8. The bridge walkway structure according to claim 1, characterized in that: The height of the base (2) is higher than the height of the curbstone (3); two adjacent bases (2) are connected by dry seams, and two adjacent curbstones (3) are also connected by dry seams; Asphalt filling material (9) is applied in the overlapped joints between the beam plate (4), the base (2) and the curb (3); The spring steel pipes (7) are arranged at intervals along the longitudinal direction of the bridge and are fully distributed along the beam plate (4) in the transverse direction.

9. The bridge walkway structure according to claim 1, characterized in that: It also includes a first guardrail (10) and a second guardrail (11); the base (2) is provided with a first connecting piece (24), and the second guardrail (11) is connected to the first connecting piece (24); the curb (3) is provided with a second connecting piece (34), and the first guardrail (10) is connected to the second connecting piece (34).

10. A bridge sidewalk construction method, characterized in that: A bridge sidewalk structure comprising any one of claims 1 to 9, wherein the bridge sidewalk construction method comprises: Prefabricate the base (2), curbstone (3) and beam slab (4), construct the main beam (1), and pre-embed the steel bars (13) and the drainage pipe (16) on the main beam (1); Install the base (2), insert the pre-buried steel bar (13) into the hole (14), and pour concrete into the hole (14) to connect the steel bar (13) to the base (2); Casting the leveling layer (17) on the bridge deck; Install the curbstone (3), insert the pre-buried steel bar (13) into the hole (14), and pour concrete into the hole (14) to connect the steel bar (13) to the curbstone (3); Laying the pipeline (12); Hoisting the beam slab (4), hoisting the second section beam slab (42), the third section beam slab (43), the fourth section beam slab (44) and the first section beam slab (41) in sequence, inserting the pre-buried steel bars (13) into the holes (14) in the piers (45), pouring concrete into the holes (14) to connect the steel bars (13) with the beam slab (4), and applying the asphalt filling material (9) at the joints between the beam slab (4), the base (2) and the curb (3); Applying the waterproof layer (8) on the beam slab (4); Laying the spring steel pipe (7) and the permeable concrete pavement layer (6) in sequence on the waterproof layer (8); The first guardrail (10) and the second guardrail (11) are installed.

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