CN117051679A - Flexible grid surface type grid pier guardrail structure - Google Patents

Flexible grid surface type grid pier guardrail structure Download PDF

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Publication number
CN117051679A
CN117051679A CN202311032923.0A CN202311032923A CN117051679A CN 117051679 A CN117051679 A CN 117051679A CN 202311032923 A CN202311032923 A CN 202311032923A CN 117051679 A CN117051679 A CN 117051679A
Authority
CN
China
Prior art keywords
pier
flexible
grid
guardrail
steel wire
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311032923.0A
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Chinese (zh)
Inventor
袁浩
周昔东
胡瑞昌
何小泷
孙倩
钟恒毅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chongqing Xike Water Transportation Engineering Consulting Co ltd
Chongqing Jiaotong University
Original Assignee
Chongqing Xike Water Transportation Engineering Consulting Co ltd
Chongqing Jiaotong University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chongqing Xike Water Transportation Engineering Consulting Co ltd, Chongqing Jiaotong University filed Critical Chongqing Xike Water Transportation Engineering Consulting Co ltd
Priority to CN202311032923.0A priority Critical patent/CN117051679A/en
Publication of CN117051679A publication Critical patent/CN117051679A/en
Pending legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/02—Piers; Abutments ; Protecting same against drifting ice
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H17/00—Fencing, e.g. fences, enclosures, corrals
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H17/00—Fencing, e.g. fences, enclosures, corrals
    • E04H17/02—Wire fencing, e.g. made of wire mesh
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

The invention discloses a flexible grid surface type grid pier guardrail structure which comprises piers, bearing platforms arranged below the piers and a plurality of pile foundations for supporting the bearing platforms, wherein a plurality of supporting columns are uniformly distributed on corresponding riverbeds around the piers, all the supporting columns are vertically arranged, the supporting columns extend downwards, the lower ends of the supporting columns are at least flush with the upper surface of the bearing platforms, flexible steel wire meshes are arranged between two adjacent supporting columns, so that an annular guardrail is formed outside the piers, and a plurality of energy dissipation blocks are stacked on the corresponding bearing platforms between the piers and the guardrails. The guardrail structure can effectively slow down the flow velocity of water around the bridge pier, reduce and even avoid solid matters carried in the water flow to impact the bridge pier, and improve the protection effect of the bridge pier.

Description

Flexible grid surface type grid pier guardrail structure
Technical Field
The invention belongs to the technical field of hydraulic engineering, and particularly relates to a flexible grid surface type grid pier guardrail structure.
Background
When water-blocking structures (piers, spur dams, piers, etc.) are present in the dredging river, local scour of the riverbed around the structure has a great influence on the stability of the structure.
For the bridge pier, the water blocking of the bridge pier reduces the cross-sectional area of the river, the flow speed around the bridge pier increases, a vortex structure (karman vortex street) is formed behind the bridge pier, the formed turbulence increases the shear stress of the river bed, and sediment on the river bed around the bridge pier is easily transported and removed by the water flow, so that the height of the bed surface is gradually reduced to form a scouring pit, the burial depth of the bridge pier foundation is reduced, the bearing capacity is obviously reduced, and the bridge collapse even causes serious life and property damage. Especially in the flood season of each year, the flood water flow velocity is large, the flow state is complex, the sand carrying capacity of river water is strong, and the river water contains a large amount of sediment and small cobbles and forms friction with the river bed around the bridge pier, so that the bridge pier can be seriously scoured, and the structure of the bridge pier can be damaged to cause instability.
Aiming at the protection measures of the current bridge pier, the following defects exist:
(1) In order to enhance the scour prevention capability of the river bed, engineering measures such as a stone throwing method (or small structures in other shapes), expanding pier foundation and the like are mainly used for avoiding instability caused by flushing the bottom of the pier by water flow and vortex systems, but the stone throwing method has poor integrity and high maintenance cost, and when the water flow speed is too high, such as flood period, the stone throwing is possibly carried by flood to wash away, so that the protection effect is weakened; the enlarged pier foundation may cause greater scour due to the exposure of the undercut bed surface and this approach may increase the construction cost.
(2) For the purpose of deceleration buffering, engineering measures such as guard ring protection, slotting protection and the like are designed by changing the structure of the bridge pier or designing other devices around the bridge pier to inhibit or weaken the water flow scouring force, but the method has certain requirements on the river bed and the water flow condition, and the river water level in mountain areas has large amplitude, and the complex and changeable river bed can possibly cause weakening or losing of the protection effect.
(3) In recent years, due to extreme weather influence, the frequency of flood formation (such as dam break flood, mountain flood, reservoir flood discharge and the like) in local areas of mountain rivers is increased, and because the flood carries huge energy, the damage to the bridge pier is not only a scouring effect but also a direct impact effect of the flood, and the bridge pier can be seriously damaged, so that the bridge pier is overturned and destroyed. The existing protective measures are not perfect for the impact protection of the flood.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the flexible grid surface type grid pier guardrail structure which can effectively slow down the flow velocity of water flow around the pier, reduce or even avoid the impact of solid matters carried in the water flow on the pier, and improve the protection effect of the pier.
The technical scheme of the invention is realized as follows:
the utility model provides a flexible grid face formula grid pier guardrail structure, includes the pier, locates the cushion cap of pier below and is used for supporting a plurality of pile foundations of cushion cap, evenly distributed has a plurality of support columns on the riverbed that corresponds around the pier, and all support columns vertically set up, support column downwardly extending and support column lower extreme at least with cushion cap upper surface parallel and level is equipped with flexible wire net between two adjacent support columns to constitute annular guardrail outside the pier, and stacked a plurality of energy dissipation pieces on the cushion cap that corresponds between pier and guardrail.
Further, the support column is formed by pouring reinforced concrete.
Further, the flexible steel wire mesh is arranged between the two support columns through a plurality of connecting pieces arranged on two sides of the flexible steel wire mesh.
Further, the connecting piece comprises a screw, a screw with a hook and an annular adjusting buckle, two threaded holes are formed in the annular adjusting buckle, the two threaded holes are oppositely arranged, one end of the screw is inserted into one threaded hole of the annular adjusting buckle, and the other end of the screw is connected with the supporting column; the straight end of the hooked screw rod is inserted into the other threaded hole of the annular adjusting buckle, the hooked end is detachably connected with the flexible steel wire mesh, and the flexible steel wire mesh can be tightened by rotating the annular adjusting buckle.
Further, the energy dissipation block is a turning king block.
Further, the grid of the flexible steel wire mesh is round or square.
Further, the guard rail is higher than the river bed by a certain height.
Further, the shape of the guardrail corresponds to the shape of the bridge pier, and the distance between the guardrail and the bridge pier is 2-4 m.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the guardrail is formed by the flexible steel wires and the support columns, the flexible steel wire mesh has good buffering space and capacity, and when stones, wood, silt and other solids in water flow strike the flexible steel wire mesh, the flexible steel wire mesh can buffer the stone, wood, silt and other solids and reduce most of kinetic energy, so that impact on a pier is reduced or even avoided; meanwhile, in the process that water flows through the flexible steel wire mesh, the flexible steel wire mesh has a certain blocking force on the water flow, and the flow velocity of the water flow is reduced, so that the flow velocity of the water flow near the bridge pier is reduced, and the scouring of the water flow is further reduced. The energy dissipation piece sets up between pier and guardrail, because of the setting of guardrail, can guarantee the wholeness of guardrail structure, and the local roughness near the pier can effectively be increased to the energy dissipation piece simultaneously to can further slow down the rivers velocity of flow near the pier, further weaken the washing away.
2. The flexible steel wire mesh in the guardrail is convenient to install and detach, so that the construction period is shortened, and the economic benefit is improved. Meanwhile, after the guardrail is washed and damaged by water flow, the guardrail can be quickly replaced according to the damaged position, so that the continuous operation of the guardrail structure is ensured, and the economic loss caused by maintenance is reduced.
Drawings
Fig. 1-side view of the present invention.
Fig. 2-top view of the present invention.
Fig. 3-schematic diagram of the connection structure of square flexible steel wire mesh and support posts.
Fig. 4-schematic diagram of the connection structure of the circular flexible steel wire mesh and the support column.
Fig. 5-schematic structural view of the connection.
Wherein: 1-pile foundation; 2-river bed; 3-bearing platform; 4-flexible steel wire mesh; 4 a-square flexible steel wire mesh; 4 b-a round flexible steel wire mesh; 5-supporting columns; 6-pier; 7-an energy dissipation block; 8-connecting pieces, 81-screws; 82-an annular adjustment port; 83-hooked screw.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
Referring to fig. 1-5, a flexible grid surface type grid pier guardrail structure comprises a pier 6, a bearing platform 3 arranged below the pier 6 and a plurality of pile foundations 1 for supporting the bearing platform 3, wherein a plurality of support columns 5 are uniformly distributed on a river bed 2 corresponding to the periphery of the pier 6, all the support columns 5 are vertically arranged, the support columns 5 extend downwards, the lower ends of the support columns 5 are at least flush with the upper surface of the bearing platform 3, a flexible steel wire mesh 4 is arranged between two adjacent support columns 5, so that an annular guardrail is formed outside the pier 6, and a plurality of energy dissipation blocks 7 are stacked on the bearing platform 3 corresponding to the guardrail between the pier 6 and the guardrail.
The flexible steel wire mesh has good buffering space and capacity, and when stones, wood, silt and other solids in water flow collide with the flexible steel wire mesh, the flexible steel wire mesh can buffer the stones, wood, silt and other solids and reduce most of kinetic energy, so that the impact of the stones, wood, silt and other solids on the bridge pier is reduced or even avoided; meanwhile, in the process that water flows through the flexible steel wire mesh, the flexible steel wire mesh has a certain blocking force on the water flow, and the flow velocity of the water flow is reduced, so that the flow velocity of the water flow near the bridge pier is reduced, and the scouring of the water flow is further reduced. The energy dissipation piece sets up between pier and guardrail, because of the setting of guardrail, can guarantee the wholeness of guardrail structure, and the local roughness near the pier can effectively be increased to the energy dissipation piece simultaneously to can further slow down the rivers velocity of flow near the pier, further weaken the washing away.
In specific implementation, the support columns 5 are formed by pouring reinforced concrete. In the specific implementation, the support column is cylindrical, and the dimension of the support column is implemented according to the requirement, and the diameter of the support column in the embodiment is 0.3m.
The support columns are usually cast on the river bed around the piers in the dry period or the bridge construction period.
In specific implementation, the flexible steel wire mesh 4 is arranged between the two support columns 5 through a plurality of connecting pieces 8 arranged on two sides of the flexible steel wire mesh 4.
In specific implementation, the connecting piece 8 comprises a screw 81, a hooked screw 83 and an annular adjusting buckle 82, wherein the annular adjusting buckle 82 is provided with two threaded holes, the two threaded holes are oppositely arranged, one end of the screw 81 is inserted into one threaded hole of the annular adjusting buckle 82, and the other end of the screw 81 is connected with the support column 5; the straight end of the hooked screw 83 is inserted into the other threaded hole of the annular adjusting buckle 82, the hooked end is detachably connected with the flexible steel wire mesh 4, and the flexible steel wire mesh 4 can be tightened by rotating the annular adjusting buckle 82.
Thus, the screw rod can be pre-embedded in the support column pouring process, then the annular adjusting buckle and the screw rod with the hook are installed, and the flexible steel wire mesh is connected with the hooked ends of the screw rods with the hook. The flexible steel wire mesh belongs to vulnerable parts, when the flexible steel wire mesh needs to be replaced, the annular adjusting buckle is rotated to enable the flexible steel wire mesh to be in a loose state, then the flexible steel wire mesh is taken down from the broken flexible steel wire mesh at the hook end of the hooked screw rod, then the new flexible steel wire mesh is connected with all the hooked screw rods on the two sides, and then the annular adjusting buckle is rotated to tightly retract the flexible steel wire mesh, so that the operation is convenient.
In the specific implementation, the energy dissipation block 7 is a turning king block. The turning character blocks are horizontally paved on the bearing platform, and in the vertical direction, the turning character blocks are provided with a plurality of layers, and all layers are overlapped.
In specific implementation, the grid of the flexible steel wire mesh 4 is round or square.
Aiming at rivers with more pebbles, the grid surface of the flexible steel wire mesh is square, the side length of the grid surface is smaller than the diameter of the pebbles in the rivers, and the diameter of the pebbles in the rivers is generally 0.05m; aiming at a river with less pebbles and smaller pebble diameter, the grid surface of the flexible steel wire mesh is round, and the diameter of the grid surface is 0.03m.
In the concrete implementation, the guardrail is higher than the river bed 2 by a certain height, so that accidental collision of some solid matters in the water flow can be resisted, and the bridge pier is prevented from being damaged greatly. The height can be set according to the flood-difficult height of 20 years or the flood-difficult height of 50 years, and the like, so that the guardrail height is almost equal to the highest flood height, and the specific height can be 0.2-5 m when the guardrail is implemented.
In specific implementation, the shape of the guardrail corresponds to the shape of the bridge pier 6, and the distance between the guardrail and the bridge pier 6 is 2-4 m.
The engineering profiles of example 1 and comparative example 1, comparative example 2 are as follows:
the total length of a river bridge on a mountain river in southwest is 2.8km, the main span length is 1.15km, the round-head bridge pier is provided with a round head with a radius of 5m, and the length of a rectangular part is 20m. The river travelling flow rate in the flood season is 4.36m/s.
For the engineering, the flexible grid surface type grid pier guardrail and the riprap protection are arranged on the bridge pier according to the embodiment 1, the comparative embodiment 1 and the comparative embodiment 2, and simulation experiment researches on the scouring range and the scouring depth are carried out.
Example 1
The embodiment adopts a flexible grid surface type grid pier guardrail structure, the structure of which is shown in figures 1, 2, 3 and 5, the flexible grid surface type grid pier guardrail structure connects a flexible steel wire mesh and reinforced concrete cylinders through connecting pieces to form a guardrail, the guardrail is 2m away from the surface contour of the pier, a closed ring is formed around the pier, every two reinforced concrete cylinders are spaced by 1m, and the upper part of the guardrail exceeds the riverbed by 3m. According to the structural requirement, the reinforced concrete cylinder of the invention has the height of 0.3m and the height of 6m, and the flexible steel wire mesh adopts square grids made of steel wires with the diameter of 0.006m and the side length of 0.04m. Prefabricated 0.5 m-long king blocks are filled between the guardrails and the bridge piers.
Experimental observation: under the arrangement of the grid type bridge pier guardrails with the flexible grid surface, the river is flushed according to the flood season, the bridge pier structure is not affected, and the flow speed of water flow around the bridge body is reduced. The bottom protection structure before the pier is unchanged, the river bed at the front side of the guardrail is influenced by scouring, and the maximum pit depth is 2.7m; the bottom protection structure behind the pier is unchanged, the back side riverbed has scouring marks, and the maximum depth of the scouring pits is 0.51m.
Comparative example 1
The comparative example does not adopt any protective measures, and the roughness rate around the bridge pier is reduced due to the lack of guardrails, so that the influence of scouring is obvious, and the farthest distance of a scouring pit from the bridge pier is 14.5m; the maximum flow rate is 0.17m/s greater than the example, and the pit flushing range is 33.4% greater. The scouring pit is obvious under the scouring action of the horseshoe-shaped vortex before the pier and the wake vortex after the pier. The maximum flushing depth is 12.9m.
Comparative example 2
The comparative example adopts the traditional stone throwing protection, the stone throwing range takes four times of the radius of the pier, namely the stone throwing distance furthest from the pier b=4R Pier Height h=3m, median diameter D of the flint 50 Taking 0.64m, and making the top of the water flush with the river bed.
Experimental observation: the flood season water flow is used for flushing, and the stone throwing protection can play a certain protection role in the initial stage. However, as time increases, part of the stone is dispersed by the water flow, and the original stone throwing range is changed. The messy riprap has the tendency of increasing the pressure gradient of the side pressure pipes of the river bed, and the scouring of water flow to the periphery of the bridge pier is enhanced. The maximum pit depth of the front side of the stone throwing area is 8.9m; the front side of the pier is provided with a flushing pit, and the maximum depth is 5.1m. The protection mode lacks integrity under water flow flushing, and the changed riprap structure enhances the water flow flushing capability and threatens the safety of the bridge.
The engineering profiles for example 2 and comparative example 3 are as follows:
the total length of a river-crossing bridge on a river in a mountain area in southwest is 2.46km, the main span length is 1.04km, the cylindrical bridge pier and the cylindrical radius are 4m. The depth of water before the river pier is 18.3m, and the travelling flow rate is 3.91m/s. Riverbed median diameter D 50 Is 0.152mm.
For the engineering, the flexible grid surface type grid pier guardrail and the flexible box type grid pier bottom protection structure disclosed in CN115387206A are respectively arranged in the large bridge pier according to the embodiment 2 and the comparative embodiment 3, and simulation experiment researches on the scouring range and the scouring depth are carried out.
Example 2
The embodiment adopts a flexible grid surface type grid pier guardrail structure, the structure of which is shown in figures 1, 2, 4 and 5, the flexible grid surface type grid pier guardrail structure connects a flexible steel wire mesh and reinforced concrete cylinders through a connecting piece to form a guardrail, the guardrail is 2m away from the surface contour of the pier, a closed ring is formed around the pier, every two reinforced concrete cylinders are spaced by 1.2m, and the upper part of the guardrail exceeds the riverbed by 3m. According to the structural requirement, the reinforced concrete cylinder in the invention has the height of 0.3m and the height of 6.5m, and the flexible steel wire mesh adopts a circular grid made of steel wires with the diameter of 0.006m and has the diameter of 0.03m. Prefabricated 0.5 m-long king blocks are filled between the guardrails and the bridge piers.
Experimental observation: under the arrangement of the bridge pier guardrails of the flexible grid surface type grid structure, the bridge pier structure is not affected by river scouring, and the flow velocity of water flow around the bridge body is slowed down. The bottom protection structure before the pier is unchanged, the river bed at the front side of the guardrail is influenced by scouring, and the maximum pit depth is 1.63m; the bottom protection structure behind the pier is unchanged, the back side riverbed has scouring marks, and the maximum depth of the scouring pits is 0.81m.
Comparative example 3
The flexible box type grid structure is connected around the bridge pier through the prefabricated screw holes, the box type grid structure is connected around the bridge pier through the prefabricated screw holes, two layers are transversely arranged, two layers are longitudinally arranged, and the upper portion of the flexible box type grid structure is leveled with the bed surface. According to the structural requirement, the inner radius of the arc section (formed by connecting arc grid boxes) is 4m, the outer radius is 6m, the corresponding central angle is 45 degrees, and the single-layer height of the bottom protection is 2.2m. Wherein the grid box body is provided with 6 layers of grids, the width between the grids is 20cm, the thickness of each layer is 10cm, and each layer is uniformly distributed in the box body. The median diameter D50 of the stone material was taken to be 0.20m.
Experimental observation: under the arrangement of the flexible box type grid bridge pier bottom protection, the bridge pier structure is not affected by flushing according to the river in the flood season, and the flow velocity of water flow around the bridge body is slowed down. The bottom protection structure before the piers is unchanged, the river bed at the front side of the bottom protection is influenced by scouring, and the maximum pit depth is 1.8m; the bottom protection structure behind the pier is unchanged, the back side riverbed has scouring marks, and the maximum depth of the scouring pits is 0.9m.
Finally, it should be noted that the above-mentioned examples of the present invention are only illustrative of the present invention and are not limiting of the embodiments of the present invention. Other variations and modifications of the present invention will be apparent to those of ordinary skill in the art in light of the foregoing description. Not all embodiments are exhaustive. Obvious changes and modifications which are extended by the technical proposal of the invention are still within the protection scope of the invention.

Claims (8)

1. The utility model provides a flexible grid face formula grid pier guardrail structure, includes the pier, locates the cushion cap of pier below and is used for supporting a plurality of pile foundations of cushion cap, its characterized in that, evenly distributed has a plurality of support columns on the riverbed that corresponds around the pier, and all support columns are vertical to be set up, and support column downwardly extending and support column lower extreme are at least with cushion cap upper surface parallel and level is equipped with flexible wire net between two adjacent support columns to constitute annular guardrail outside the pier, and stacked a plurality of energy dissipation pieces on the cushion cap that corresponds between pier and guardrail.
2. The flexible grid surface type grid pier guardrail structure of claim 1, wherein the support posts are formed by casting reinforced concrete.
3. The flexible grid surface type grid pier guardrail structure according to claim 1, wherein the flexible steel wire mesh is arranged between two support columns through a plurality of connecting pieces arranged on two sides of the flexible steel wire mesh.
4. The flexible grid surface type grid pier guardrail structure according to claim 3, wherein the connecting piece comprises a screw, a hooked screw and an annular adjusting buckle, two threaded holes are formed in the annular adjusting buckle, the two threaded holes are arranged oppositely, one end of the screw is inserted into one threaded hole of the annular adjusting buckle, and the other end of the screw is connected with the supporting column; the straight end of the hooked screw rod is inserted into the other threaded hole of the annular adjusting buckle, the hooked end is detachably connected with the flexible steel wire mesh, and the flexible steel wire mesh can be tightened by rotating the annular adjusting buckle.
5. The flexible grid surface type grid pier guardrail structure according to claim 1, wherein the energy dissipation blocks are twisting blocks.
6. The flexible grid surface type grid pier guardrail structure according to claim 1, wherein the grid of the flexible steel wire mesh is round or square.
7. The flexible cellular surface type grating pier guardrail structure of claim 1, wherein the guardrail is raised above the river bed by a certain height.
8. The flexible grid surface type grid pier guardrail structure according to claim 1, wherein the guardrail corresponds to the pier in shape and is 2-4 m away from the pier.
CN202311032923.0A 2023-08-16 2023-08-16 Flexible grid surface type grid pier guardrail structure Pending CN117051679A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311032923.0A CN117051679A (en) 2023-08-16 2023-08-16 Flexible grid surface type grid pier guardrail structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311032923.0A CN117051679A (en) 2023-08-16 2023-08-16 Flexible grid surface type grid pier guardrail structure

Publications (1)

Publication Number Publication Date
CN117051679A true CN117051679A (en) 2023-11-14

Family

ID=88668809

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311032923.0A Pending CN117051679A (en) 2023-08-16 2023-08-16 Flexible grid surface type grid pier guardrail structure

Country Status (1)

Country Link
CN (1) CN117051679A (en)

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