Concrete column and steel strand combined type passive blocking structure

Abstract

The utility model relates to the technical field of geological disaster prevention and control engineering, in particular to a concrete column and steel strand combined type passive blocking structure which comprises a plurality of vertical columns which are vertically arranged between geological disasters and threatened objects at intervals. A plurality of first steel strands which are vertically arranged at intervals are horizontally arranged between any two adjacent stand columns, and the two ends of each first steel strand are each provided with a connecting and fixing structure and are correspondingly connected and fixed to the corresponding stand column. A plurality of second steel strands which are transversely arranged at intervals are vertically arranged between any two stand columns; the intersecting positions of the first steel strand and the second steel strand are fixed together through node rope clamps; each stand column comprises a stand column built-in section at the lower end and a stand column supporting section at the upper end. The utility model has the characteristics that the damaged part can be locally disassembled and maintained more conveniently, the flexibility is stronger, and the blocking effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of geological disaster prevention and control engineering, in particular to a concrete column and steel strand composite passive retaining structure. Background Technique

[0002] The existing passive retaining structure mainly consists of: 1. Steel wire rope net: As the main interception element, it is woven into a grid shape by steel wire ropes and is used to directly bear the impact of falling rocks; 2. Steel wire grid net: Usually hung inside the steel wire rope net to further enhance the interception ability of the protection net; 3. Steel columns: Used to support the entire protection net structure to ensure its stability when bearing impacts; 4. Support ropes: Including upper support ropes and lower support ropes, used to fix the steel wire rope net to prevent it from deforming too much due to the impact of falling rocks; 5. Anchor bolts: Firmly fix the steel columns on the mountain body to ensure the stability of the entire protection net structure; 6. Decompression rings: Designed to absorb part of the energy during the impact of falling rocks, reduce the direct impact on the protection net, and improve the anti-impact ability of the system. Its working principle is that based on its flexibility and interception strength, when a falling rock impacts the protection net, the flexibility and deformation ability of the system can extend the action time of the falling rock in the interception system, thereby greatly weakening the impact force. At the same time, the steel wire rope net and the steel wire grid net disperse and transfer the impact kinetic energy through their grid structures, and further absorb energy through the decompression rings. In this way, the passive protection net can overcome rigidity with flexibility, effectively intercept falling rocks, and protect the target area below.

[0003] The existing passive retaining structure has the following problems: 1. Energy level is not easy to control and detect: Since the passive protection net usually consists of multiple components and the installation environment is complex and changeable, it is difficult to control and detect its energy level. Currently, the factory certificate is mainly relied on as the quality control support. 2. Poor terrain adaptability: The passive protection net is usually prefabricated in the factory and then installed on site. It is suitable for relatively flat or medium-slope mountain bodies and has poor adaptability to areas with complex terrain and steep slopes. This may lead to limitations in installation conditions and protection effects in certain specific terrains. 3. Small retaining energy level: The retaining energy level of the traditional passive protection net is limited and cannot effectively intercept large-volume or high-energy falling rocks, especially flash floods and debris flows with high impact energy. 4. The columns and the protection net are easily damaged: Under the long-term action of falling rock impacts and environmental erosion, the columns and the protection net are prone to problems such as damage and deformation. Especially, the columns are extremely easy to bend under the impact of falling rocks and other impacts, resulting in the failure of the protection net. Regular inspections and maintenance are required, and damaged components need to be replaced in time to ensure the protection effect. 5. Non-repairable: Some passive protection nets cannot be effectively repaired when damaged and need to be completely removed and reinstalled, which will increase the maintenance cost and construction difficulty. Therefore, repairability and modular design should be considered during design to improve the maintenance efficiency.

[0004] Therefore, how to provide a concrete column steel strand composite passive retaining structure with a simpler and more reasonable structural design, which can be more convenient for local disassembly, assembly and maintenance of damaged parts, has stronger flexibility and better retaining effect, has become a technical problem to be solved by those skilled in the art. Summary of the Invention

[0005] In view of the above defects of the prior art, the technical problem to be solved by the present invention is how to provide a concrete column steel strand composite passive retaining structure with a simpler and more reasonable structural design, which can be more convenient for local disassembly, assembly and maintenance of damaged parts, has stronger flexibility and better retaining effect.

[0006] To achieve the above object, the present invention provides a concrete column steel strand composite passive retaining structure, including a plurality of vertically arranged columns spaced between a geological disaster and a threatened object; a plurality of first steel strands vertically spaced are horizontally arranged between any two adjacent columns, and connection and fixing structures are respectively arranged at both ends of the first steel strands and are respectively connected and fixed to the columns correspondingly; a plurality of second steel strands horizontally spaced are vertically arranged between any two columns; and the positions where the first steel strands and the second steel strands intersect are respectively fixed together by node clamps; characterized in that; the column includes a column embedded section at the lower end and a column support section at the upper end, and the cross-sectional dimension of the column embedded section is set to be larger than that of the column support section; and the lower end of the column embedded section penetrates through the surface loose soil layer and enters the rock stable formation.

[0007] In this way, in the above-mentioned concrete column steel strand composite passive retaining structure, the lower end of the column embedded section penetrates through the surface loose soil layer and enters the rock stable formation, and the cross-sectional dimension of the column embedded section is set to be larger than that of the column support section, making the column more stable and not easily toppling after being impacted, and having a better retaining effect.

[0008] As an optimization, the column is a C30 reinforced concrete column.

[0009] In this way, using a C30 reinforced concrete column for the column can make the construction more convenient and better adapt to different environments.

[0010] As an optimization, the cross-section of the column embedded section is a square structure design with a side length of 1000 mm; the cross-section of the column support section is a square structure design with a side length of 800 mm.

[0011] In this way, the cross-sectional dimension design of the column embedded section and the column support section is more reasonable, and the stability of the column is better.

[0012] As an optimization, the distance between any two adjacent columns is less than or equal to 10000mm; the distance between any two adjacent first steel strands is less than or equal to 300mm; the distance between any two adjacent second steel strands is less than or equal to 300mm.

[0013] In this way, the spacing between adjacent columns, the spacing between adjacent first steel strands and the spacing between adjacent second steel strands are designed more reasonably, which can better improve the blocking effect and quality.

[0014] As an optimization, the length dimension of the column embedding section is set to be greater than or equal to 0.35 times the length dimension of the column supporting section.

[0015] In this way, the length dimensions of the column embedding section and the column supporting section are designed to be more reasonable and more stable.

[0016] As an optimization, the connecting and fixing structure includes a fixing steel bar that is pre-embedded on the column and horizontally arranged; a connector is connected and fixed to the outer end of the fixing steel bar, and a connecting hole is arranged on the outer end face of the connector, and the connecting hole includes an inner mounting hole section and an outer clamping hole section, and the clamping hole section as a whole is a conical structure with a small outer end diameter and a large inner end diameter; a clip is arranged in the clamping hole section, and the inner hole of the clip forms a connecting and fixing hole and allows the end of the first steel strand to be inserted into the connecting and fixing hole, and a coil spring is arranged in the mounting hole section, and the two ends of the coil spring are respectively abutted and supported on the inner end face of the mounting hole section and the inner end of the clip, and the clip has an outward movement tendency so that the clip can be retracted and clamped on the first steel strand.

[0017] In this way, by providing a connector, it is more convenient to remove the first steel strand from the column and to install the first steel strand on the column quickly and conveniently. By providing a node rope clamp, it is convenient to disassemble and assemble the nodes between the first steel strand and the second steel strand. Therefore, it is more convenient to disassemble and replace the damaged first steel strand and the second steel strand in a targeted manner.

[0018] As an optimization, the mounting hole section includes a front section of the mounting hole section at the outer end and a rear section of the mounting hole section at the inner end, the inner diameter of the front section of the mounting hole section is larger than the inner diameter of the inner end of the clamping hole section, and the inner diameter of the front section of the mounting hole section is larger than the inner diameter of the rear section of the mounting hole section.

[0019] In this way, the coil spring can be installed and arranged more conveniently.

[0020] As an optimization, the fixing steel bars are steel bars with a diameter of 25 mm.

[0021] In this way, the selection of fixing steel bars is more reasonable.

[0022] As an optimization, a threaded connection hole is provided at the inner end of the connector, and an external thread is provided at the outer end of the fixing steel bar, and the outer end of the fixing steel bar is threadedly connected and arranged in the threaded connection hole.

[0023] In this way, it is more convenient to disassemble and assemble the connector and the fixing steel bar.

[0024] As an optimization, pressure relief rings are respectively provided at both ends of the first steel strand.

[0025] In this way, with the pressure relief rings provided, it can better protect the first steel strand.

[0026] To sum up, the above-mentioned concrete column steel strand composite passive retaining structure has the characteristics of simpler and more reasonable structural design, being more convenient for local disassembly, assembly and maintenance of damaged parts, stronger flexibility, and better retaining effect. Description of the Drawings

[0027] Figure 1 is the front view of the concrete column steel strand composite passive retaining structure in the specific embodiment of the present invention.

[0028] Figure 2 is Figure 1 the top view schematic diagram in

[0029] Figure 3 is Figure 1 the schematic diagram of the intersection position of the first steel strand and the second steel strand in

[0030] Figure 4 is Figure 3 the schematic diagram of the node clamp in

[0031] Figure 5 is Figure 1 the schematic diagram of the connection and fixing structure in Specific Embodiment

[0032] The following further describes the present invention in conjunction with the drawings and embodiments. It should be noted that in the description of the present invention, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is 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 manner, and therefore should not be construed as a limitation of the present invention. The terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0033] Such as Figures 1 to 5Shown is a composite passive retaining structure of concrete columns and steel strands, which includes a number of vertically arranged columns 1 that are spaced between a geological hazard and a threatened object; between any two adjacent columns, a number of first steel strands 2 are horizontally arranged at intervals vertically, and connection and fixing structures are respectively arranged at both ends of the first steel strands and are respectively connected and fixed to the columns; between any two columns, a number of second steel strands 3 are vertically arranged at intervals horizontally; and the positions where the first steel strands and the second steel strands intersect are respectively fixed together by node clamps 4; the column includes a column embedded section 5 at the lower end and a column support section 6 at the upper end, and the cross-sectional dimension of the column embedded section is set to be larger than that of the column support section; and the lower end of the column embedded section passes through the soil layer 7 outside the geological hazard area and extends into the rock stratum 8.

[0034] In this way, in the above-mentioned composite passive retaining structure of concrete columns and steel strands, the lower end of the column embedded section passes through the surface loose soil layer and enters the stable rock stratum, and the cross-sectional dimension of the column embedded section is set to be larger than that of the column support section, making the column more stable and not prone to tipping over after being impacted, and having a better retaining effect. Among them, the node clamp is an existing structure.

[0035] In this specific embodiment, the column is a C30 reinforced concrete column.

[0036] In this way, using a C30 reinforced concrete column for the column can facilitate construction more and better adapt to different environments.

[0037] In this specific embodiment, the cross-section of the column embedded section is a square structure design with a side length of 1000 mm; the cross-section of the column support section is a square structure design with a side length of 800 mm.

[0038] In this way, the cross-sectional dimension design of the column embedded section and the column support section is more reasonable, and the stability of the column is better. And its size can be adjusted according to the calculation of the impact force of the disaster body.

[0039] In this specific embodiment, the distance between any two adjacent columns is set to be less than or equal to 10000 mm; the distance between any two adjacent first steel strands is less than or equal to 300 mm; the distance between any two adjacent second steel strands is set to be less than or equal to 300 mm.

[0040] In this way, the distances between adjacent columns, between adjacent first steel strands, and between adjacent second steel strands are designed more reasonably, and the retaining effect and quality can be better improved. And its size can be adjusted according to the particle size characteristics of the disaster body.

[0041] In this specific implementation manner, the length dimension of the column embedding section is greater than or equal to 0.35 times the length dimension of the column supporting section.

[0042] In this way, the length dimensions of the column embedding section and the column supporting section are designed to be more reasonable and more stable.

[0043] In this specific embodiment, the connecting and fixing structure includes a fixing steel bar 9 that is pre-embedded and horizontally arranged on the column; a connector 10 is connected and fixed to the outer end of the fixing steel bar, and a connecting hole is arranged on the outer end face of the connector, and the connecting hole includes an inner end mounting hole section and an outer end clamping hole section, and the clamping hole section as a whole is a conical structure with a small outer end diameter and a large inner end diameter; a clip 11 is arranged in the clamping hole section, and the inner hole of the clip forms a connecting and fixing hole and allows the end of the first steel strand to be inserted into the connecting and fixing hole, and a coil spring 12 is arranged in the mounting hole section, and the two ends of the coil spring are respectively abutted and supported on the inner end face of the mounting hole section and the inner end of the clip, and the clip has an outward movement tendency so that the clip can be retracted and clamped on the first steel strand.

[0044] In this way, by providing a connector, it is more convenient to remove the first steel strand from the column and to install the first steel strand on the column quickly and conveniently. By providing a node rope clamp, it is possible to facilitate the disassembly and assembly between the nodes of the first steel strand and the second steel strand. Thereby, it is more convenient to disassemble, assemble and replace the damaged first steel strand and the second steel strand in a targeted manner. Among them, the clips are multiple and arranged in an array along the circumferential direction, and the multiple clips as a whole form a conical structure with a small outer end diameter and a large inner end diameter, and a fixing hole is formed in the middle of the multiple clips, and is used for inserting the end of the first steel strand. After the first steel strand is subjected to force and under the action of the spiral spring, the multiple clips can be clamped on the outside of the first steel strand to prevent it from detaching.

[0045] In this specific embodiment, the mounting hole section includes a front mounting hole section 13 at the outer end and a rear mounting hole section 14 at the inner end, the inner diameter of the front mounting hole section is larger than the inner diameter of the inner end of the clamping hole section, and the inner diameter of the front mounting hole section is larger than the inner diameter of the rear mounting hole section.

[0046] In this way, the coil spring can be installed and arranged more conveniently.

[0047] In this specific implementation manner, the fixing steel bars are steel bars with a diameter of 25 mm.

[0048] In this way, the selection of fixing steel bars is more reasonable.

[0049] In this specific embodiment, a threaded connection hole is provided at the inner end of the connector, an external thread is provided at the outer end of the fixing steel bar, and the outer end of the fixing steel bar is threadedly connected and arranged in the threaded connection hole.

[0050] In this way, it is more convenient to disassemble and assemble the connector and the fixing steel bars.

[0051] In this specific embodiment, pressure relief rings 15 are respectively arranged at both ends of the first steel strand.

[0052] In this way, with the pressure relief rings provided, it can better protect the first steel strand.

[0053] In summary, the above-mentioned concrete column steel strand composite passive retaining structure has the following advantages: 1. It can be dynamically designed according to the actual on-site conditions to adapt to terrain changes and personalized needs; 2. It is composed of reinforced concrete columns and steel strands, with controllable quality and strength, and can play a role in intercepting multiple times and effectively; 3. The structure adopts a detachable structure, which is easy to repair and saves maintenance costs.

[0054] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of the present invention without creative work. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the protection scope determined by the claims.

Claims

1. A concrete column steel strand composite passive blocking structure, comprising a plurality of vertically arranged columns arranged at intervals between geological hazards and threatened objects; a plurality of vertically spaced first steel strands are horizontally arranged between any two adjacent columns, and connecting and fixing structures are respectively arranged at both ends of the first steel strands and are respectively connected and fixed to the columns; a plurality of horizontally spaced second steel strands are vertically arranged between any two columns; and the intersections of the first steel strands and the second steel strands are each fixed together by a node rope clamp; characterized in that; The column includes a column embedding section at the lower end and a column supporting section at the upper end, and the cross-sectional size of the column embedding section is set larger than the cross-sectional size of the column supporting section; and the lower end of the column embedding section passes through the loose soil layer on the surface and enters the stable rock stratum.

2. A concrete column steel strand composite passive retaining structure as claimed in claim 1, characterized in that: The columns are C30 reinforced concrete columns.

3. The concrete column steel strand composite passive retaining structure according to claim 1, characterized in that: The cross-section of the column embedding section is designed as a square structure with a side length of 1000mm; the cross-section of the column supporting section is designed as a square structure with a side length of 800mm.

4. The concrete column steel strand composite passive retaining structure according to claim 1, characterized in that: The distance between any two adjacent columns is less than or equal to 10000mm; the distance between any two adjacent first steel strands is less than or equal to 300mm; the distance between any two adjacent second steel strands is less than or equal to 300mm.

5. The concrete column and steel strand composite passive retaining structure according to claim 1, characterized in that: The length of the column embedding section is greater than or equal to 0.35 times the length of the column supporting section.

6. The concrete column and steel strand composite passive retaining structure according to claim 1, characterized in that: The connecting and fixing structure includes a fixing steel bar that is pre-embedded and horizontally arranged on the column; a connector is connected and fixed to the outer end of the fixing steel bar, and a connecting hole is arranged on the outer end face of the connector, and the connecting hole includes a mounting hole section at the inner end and a clamping hole section at the outer end, and the clamping hole section as a whole is a conical structure with a small outer end diameter and a large inner end diameter; a clamping piece is arranged in the clamping hole section, and the inner hole of the clamping piece forms a connecting and fixing hole and allows the end of the first steel strand to be inserted and arranged in the connecting and fixing hole, and a coil spring is arranged in the mounting hole section, and the two ends of the coil spring are respectively abutted and supported on the inner end face of the mounting hole section and the inner end of the clamping piece, and the clamping piece has an outward movement tendency so that the clamping piece can be retracted and clamped on the first steel strand.

7. A concrete column and steel strand composite passive retaining structure as claimed in claim 6, characterized in that: The mounting hole section includes a front section at the outer end and a rear section at the inner end. The inner diameter of the front section is larger than the inner diameter of the inner end of the clamping hole section, and the inner diameter of the front section is larger than the inner diameter of the rear section.

8. The concrete column and steel strand composite passive retaining structure according to claim 6, characterized in that: The fixing steel bars are steel bars with a diameter of 25 mm.

9. The concrete column and steel strand composite passive retaining structure according to claim 6, characterized in that: The inner end of the connector is provided with a threaded connection hole, the outer end of the fixing steel bar is provided with an external thread, and the outer end of the fixing steel bar is threadedly connected and arranged in the threaded connection hole.

10. The concrete column and steel strand composite passive retaining structure according to claim 6, characterized in that: Pressure reducing rings are also provided at both ends of the first steel strand.

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