A single-span separated flexible retaining net

Abstract

The present invention belongs to the technical field of slope protection, and discloses a single-span separated flexible retaining net, comprising a plurality of columns arranged at intervals on the slope surface, a base is provided at the bottom of each column, and first shackles are respectively provided on the four sides of the column top of each column, and the first shackle on the upper slope side is connected to the first foundation anchor rod through an upper pull anchor rope; the first shackles on the opposite side of two adjacent columns are connected through an upper support rope; second shackles are respectively provided on both sides of each base, and the second shackles of two adjacent bases are respectively connected through a lower support rope; the bases at both ends are connected to the second foundation anchor rod through the end side lower pull rope, and the columns at both ends are connected to the corresponding second foundation anchor rod through the end side upper pull rope; a flexible retaining net is provided between the upper support rope and the lower support rope. The present invention adopts a single-span separated flexible retaining net and adopts a single-span system as a force-bearing unit, and the impact load and deformation transmission of the single span does not affect other adjacent spans, which can reduce the maintenance and repair work of the system.

Description

Technical Field

[0001] The invention belongs to the technical field of slope protection, and in particular relates to a single-span separated flexible retaining net. Background Art

[0002] In recent years, rockfall on slopes has posed a serious threat to traffic safety and the safety of life and property. Flexible passive protection nets play an important role in rockfall prevention. Flexible protection systems are mainly divided into active flexible protection systems and passive flexible protection systems. Among them, the passive protection system consists of four main parts: a ring net (an additional layer of grid net is required when small pieces of rockfall need to be intercepted), a fixed system (including anchor rods, anchor ropes, bases and support ropes), an energy dissipator, and a column. The steel column and the ring net are connected and combined to form a whole, forming a surface protection for the protected area, thereby intercepting collapsed rocks and playing a role in slope protection. The flexibility and interception strength of the system are sufficient to absorb and disperse the expected kinetic energy of rockfall impact. The design and use of the energy dissipator further improve the system's impact resistance. It is suitable for high mountains and steep hills with buffer zones, and can intercept rockfalls, flying rocks, snow avalanches, and mudslides outside the protected facilities to avoid damage to the facilities caused by disasters.

[0003] The existing passive interception net generally has multiple spans to form an interception system. The base and columns are arranged at a certain interval to form a row of support points. The upper support rope passes through the top node of each span column and is anchored to the slope foundation at both ends; the lower support rope passes through the base node of each span and is anchored to the slope foundation at both ends; a single hinge connection is adopted between the column and the base, which can only realize the system's unidirectional rotation out of the plane. When the falling rocks fall and impact the metal mesh, the load is transferred to the upper and lower support ropes, and then to the adjacent spans by the support ropes, and finally to the slope foundation. The columns and the base play the role of supporting and transferring the load. During the entire force transmission process, the support rope has rotational loads and system out-of-plane deflection loads on the columns, which usually lead to torsional bending damage of the columns. The current solution is to increase the cross-section of the steel columns and improve the bending and torsional resistance, which is not economical and the effect is not good. With multiple spans as the overall force unit, when any span is impacted, the load will be transmitted to each span through the upper and lower support ropes. The energy dissipator of each span connected in series with the same support rope will transmit the same load. The startup and deformation of the energy dissipator will cause waste of energy dissipation of the energy dissipator and increase maintenance and replacement costs. Summary of the invention

[0004] The object of the present invention is to provide a single-span separated flexible retaining net to solve one or more of the above-mentioned problems existing in the prior art.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] A single-span separated flexible barrier net comprises a plurality of columns arranged at intervals on a slope surface, wherein a base is arranged at the bottom of each column, and each of the bases is fixed to the slope surface; first shackles are arranged on four sides of the column top of each column, wherein the first shackles on the upslope side are respectively connected to one end of two upper pull anchor ropes, and the other end of each upper pull anchor rope is respectively connected to a first foundation anchor rod, and each upper pull anchor rope is also provided with a first energy dissipator; the first shackles on the opposite sides of two adjacent columns are respectively connected through upper support ropes, and each section of the upper support rope is provided with a second energy dissipator; each The base is respectively provided with second shackles on both sides along the laying direction, and the second shackles of two adjacent bases are respectively connected by lower support ropes, and each section of the lower support rope is provided with a third energy dissipator; the bases located at both ends of the laying direction are connected with the end side lower pull rope through the second shackles thereon, and the other end of the end side lower pull rope is connected to the second foundation anchor rod, and the columns located at both ends of the laying direction are connected with the end side upper pull rope through the first shackles on the outer side of the top thereof, and the other end of the end side upper pull rope is connected to the corresponding second foundation anchor rod; a flexible barrier net is provided between the upper support rope and the lower support rope.

[0007] Furthermore, each of the bases is anchored to the slope surface via a ground anchor rod.

[0008] Furthermore, the column is hingedly connected to the base.

[0009] Furthermore, a base ear plate is rotatably provided on the base, and the column is hingedly connected to the base ear plate.

[0010] Furthermore, a rotating plate is provided at the bottom of the base ear plate, and a rotating cover plate is provided at the top of the base, and a rotating plate accommodating cavity is formed between the rotating cover plate and the base, and the rotating plate is clamped in the rotating plate accommodating cavity and can rotate around its own center.

[0011] Furthermore, the rotating cover plate is connected to the base by welding.

[0012] Furthermore, the second energy absorber is arranged at the middle part of each section of the upper support rope, and the third energy absorber is arranged at the middle part of each section of the lower support rope.

[0013] Furthermore, the first shackle is hingedly connected to the column, and the second shackle is hingedly connected to the base.

[0014] Furthermore, the flexible barrier net includes an annular mesh and a grille mesh, the annular mesh is connected to the upper support rope and the lower support rope respectively, and the grille mesh is attached to the upslope surface of the annular mesh and fixedly connected to the annular mesh.

[0015] Furthermore, the grille mesh and the annular mesh are connected by binding.

[0016] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects or advantages:

[0017] The single-span separated flexible retaining net provided by the present invention adopts a single-span system as a force-bearing unit. The impact load and deformation transmission of the single span does not affect other adjacent spans, which can reduce the maintenance work of the system and the replacement and use of energy dissipators. The maintenance of the retaining net system is simpler and more economical.

[0018] With reference to the following description and accompanying drawings, specific embodiments of the present invention are disclosed in detail, indicating the manner in which the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present invention include many changes, modifications and equivalents.

[0019] Features described and / or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0020] It should be emphasized that the term “include / comprises” when used herein refers to the presence of features, integers, steps or components, but does not exclude the presence or addition of one or more other features, integers, steps or components. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the embodiment of the present invention omitting the flexible barrier net

[0023] Figure 3 A top view of an embodiment of the present invention;

[0024] Figure 4 is a cross-sectional view of an embodiment of the present invention;

[0025] Figure 5 It is a structural schematic diagram of a base in an embodiment of the present invention;

[0026] Figure 6 is a top view of a base in an embodiment of the present invention;

[0027] Figure 7 It is a cross-sectional view of the base in the embodiment of the present invention.

[0028] In the above drawings, the component names corresponding to the reference numerals are as follows:

[0029] 1-column; 2-base; 3-first shackle; 4-upper pull anchor rope; 5-first foundation anchor rod; 6-first energy dissipator; 7-upper support rope; 8-second energy dissipator; 9-second shackle; 10-lower support rope; 11-third energy dissipator; 12-end side lower pull rope; 13-second foundation anchor rod; 14-end side upper pull rope; 15-ground anchor rod; 16-base ear plate; 17-carrying plate; 18-carrying cover plate; 19-annular mesh; 20-grating mesh. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. 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.

[0032] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] In the description of the embodiments of the present invention, it should be noted that the indicated orientation or position relationship is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invented product is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply 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 a limitation on the present invention. In addition, the terms "first" and "second" are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0035] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in specific circumstances. The drawings in the embodiments of the present invention clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations.

[0036] like Figure 1 to Figure 7 As shown, an embodiment of the present invention provides a single-span separated flexible barrier net, including a plurality of columns 1 arranged at intervals on a slope surface, a base 2 being provided at the bottom of each column 1, and each base 2 being fixed to the slope surface; first shackles 3 are provided on the four sides of the column top of each column 1, wherein the first shackles 3 on the upper slope side are respectively connected to one end of two upper pull anchor ropes 4, and the other end of each upper pull anchor rope 4 is respectively connected to a first foundation anchor rod 5, and each upper pull anchor rope 4 is also provided with a first energy dissipator 6; the first shackles 3 on the opposite sides of two adjacent columns 1 are respectively connected by upper support ropes 7, and each section of the upper support rope 7 is provided with a second energy dissipator 8; Each base 2 is provided with a second shackle 9 on both sides along the laying direction, and the second shackles 9 of two adjacent bases 2 are connected by a lower support rope 10, and each section of the lower support rope 10 is provided with a third energy dissipator 11; the bases 2 located at both ends of the laying direction are connected with the end side lower pull rope 12 through the second shackle 9 thereon, and the other end of the end side lower pull rope 12 is connected to the second foundation anchor rod 13, and the columns 1 located at both ends of the laying direction are connected with the end side upper pull rope 14 through the first shackle 3 on the outer side of the top thereof, and the other end of the end side upper pull rope 14 is connected to the corresponding second foundation anchor rod 13; a flexible barrier net is provided between the upper support rope 7 and the lower support rope 10.

[0037] The single-span separated flexible retaining net provided in the embodiment of the present invention adopts a single-span system as a force-bearing unit. The impact load and deformation transmission of the single span does not affect other adjacent spans, which can reduce the maintenance work of the system and the replacement and use of energy dissipators. The maintenance of the retaining net system is simpler and more economical.

[0038] During the specific implementation process, it should be noted that the spacing between adjacent columns in the embodiment of the present invention is preferably 10 meters. Of course, it can also be larger or smaller without limitation. In addition, the pulling directions of the two upper pull anchor ropes 4 connected to each column 1 are respectively obliquely toward the two sides of the column, thereby improving the impact resistance of the barrier net.

[0039] In the specific implementation process, in order to firmly connect the base to the slope, in a further implementation scheme, each base 2 in the embodiment of the present invention is anchored to the slope through a ground anchor rod 15. The use of the ground anchor rod can make the connection between the base 2 and the slope more stable.

[0040] In the specific implementation process, in order to improve the impact resistance of the barrier net, in a further implementation scheme, a hinge connection is adopted between the column 1 and the base 2 in the embodiment of the present invention. With the hinge connection, when the barrier net is impacted, there is a buffer between the column 1 and the base 2 due to the hinge, which makes the load transfer more superior and effectively improves the impact resistance of the barrier net.

[0041] In the specific implementation process, in order to further improve the impact resistance of the barrier net, in a further implementation scheme, the embodiment of the present invention is rotatably provided with a base ear plate 16 on the base 2, such as Figures 5 to 7 As shown, the column 2 is hingedly connected to the base ear plate 16. The base ear plate 16 is rotatably arranged on the base 2, and the column 2 is hingedly connected to the base ear plate 16, so that the column 1 only bears the axial support force, and does not bear the torsion and deflection loads, the system load transfer is more superior, the impact resistance of the barrier net is stronger, and the cross-sectional size of the column can be reduced, the installation and transportation are more convenient, and the engineering cost can be saved.

[0042] In the specific implementation process, there are many ways to connect the base ear plate 16 and the base 2, such as connecting through a bearing seat, a turntable, etc. In order to save costs, in a further implementation scheme, the embodiment of the present invention is provided with a rotating plate 17 at the bottom of the base ear plate 16, and a rotating cover plate 18 is provided on the top of the base 2. A rotating plate accommodating cavity is formed between the rotating cover plate 18 and the base 2, and the rotating plate 17 is clamped in the rotating plate accommodating cavity and can rotate around its own center.

[0043] In the specific implementation process, in order to firmly fix the rotating cover plate 18 and the base 2, in a further implementation scheme, the rotating cover plate 18 in the embodiment of the present invention is connected by welding with the base 2. In order to facilitate the rotation of the rotating plate 17, lubricating oil is also applied to the rotating plate accommodating cavity formed by the rotating cover plate 18 and the base 2 in the embodiment of the present invention.

[0044] In the specific implementation process, the second energy absorber 8 can be set at any position of the upper support rope 7, and the third energy absorber 11 can also be set at any position of the lower support rope 10. The second energy absorber 8 in the embodiment of the present invention is preferably set at the middle of each section of the upper support rope 7, and the third energy absorber 11 is preferably set at the middle of each section of the lower support rope 10.

[0045] In a specific implementation process, in order to better transfer the load, in a further implementation scheme, the first shackle 3 in the embodiment of the present invention is hingedly connected to the column 1, and the second shackle 4 is hingedly connected to the base 2.

[0046] In the specific implementation process, in order to improve the blocking effect of the flexible blocking net, in a further implementation scheme, the flexible blocking net in the embodiment of the present invention includes an annular mesh 19 and a grille mesh 20, the annular mesh 19 is connected to the upper support rope 7 and the lower support rope 10 respectively, and the grille mesh 20 is attached to the upslope surface of the annular mesh 19 and is fixedly connected to the annular mesh 19. The mesh of the annular mesh 19 is large and plays a major blocking role, while the mesh of the grille mesh 20 is small and is mainly used to block small stones. The use of a double-layer blocking net can improve the blocking effect of the flexible blocking net.

[0047] In the specific implementation process, there are many ways to fix the connection between the grille mesh 20 and the annular mesh 19, such as welding, snap connection, etc. In the embodiment of the present invention, the grille mesh 20 and the annular mesh 19 are preferably connected by binding, such as using binding wire or binding tape, which is more convenient and quick.

[0048] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A single-span separated flexible barrier net, characterized in that: The invention comprises a plurality of columns arranged at intervals on the slope surface, wherein a base is arranged at the bottom of each column, and each of the bases is fixed to the slope surface; first shackles are arranged on four sides of the column top of each column, wherein the first shackles on the upper slope side are respectively connected to one end of two upper pull anchor ropes, and the other end of each upper pull anchor rope is respectively connected to the first foundation anchor rod, and each upper pull anchor rope is also provided with a first energy dissipator; the first shackles on the opposite sides of two adjacent columns are respectively connected by upper support ropes, and each section of the upper support rope is provided with a second energy dissipator; each of the bases is arranged along the direction of arrangement Second shackles are respectively arranged on both sides of the direction, and the second shackles of two adjacent bases are respectively connected by lower support ropes, and each section of the lower support rope is provided with a third energy dissipator; the bases located at both ends of the laying direction are connected with the end side lower pull rope through the second shackles thereon, and the other end of the end side lower pull rope is connected to the second foundation anchor rod, and the columns located at both ends of the laying direction are connected with the end side upper pull rope through the first shackles on the outer side of the top thereof, and the other end of the end side upper pull rope is connected to the corresponding second foundation anchor rod; a flexible barrier net is arranged between the upper support rope and the lower support rope.

2. The single-span separated flexible barrier net according to claim 1 is characterized in that: Each of the bases is anchored to the slope surface via a ground anchor rod.

3. The single-span separated flexible barrier net according to claim 1 is characterized in that: The column is hingedly connected to the base.

4. The single-span separated flexible barrier net according to claim 3 is characterized in that: A base ear plate is rotatably arranged on the base, and the upright column is hingedly connected to the base ear plate.

5. The single-span separated flexible barrier net according to claim 4 is characterized in that: A rotating plate is arranged at the bottom of the base ear plate, a rotating cover plate is arranged at the top of the base, a rotating plate accommodating cavity is formed between the rotating cover plate and the base, and the rotating plate is clamped in the rotating plate accommodating cavity and can rotate around its own center.

6. The single-span separated flexible barrier net according to claim 5 is characterized in that: The rotating cover plate is welded to the base.

7. The single-span separated flexible barrier net according to claim 1 is characterized in that: The second energy dissipator is arranged at the middle part of each section of the upper support rope, and the third energy dissipator is arranged at the middle part of each section of the lower support rope.

8. The single-span separated flexible barrier net according to claim 1 is characterized in that: The first shackle is hingedly connected to the column, and the second shackle is hingedly connected to the base.

9. The single-span separated flexible barrier net according to claim 1, characterized in that: The flexible barrier net includes an annular mesh and a grille mesh. The annular mesh is connected to the upper support rope and the lower support rope respectively. The grille mesh is attached to the upslope surface of the annular mesh and is fixedly connected to the annular mesh.

10. The single-span separated flexible barrier net according to claim 9, characterized in that: The grille mesh and the annular mesh are connected by binding.

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