Assembly type rockfall emergency blocking structure

Abstract

The invention relates to the field of geotechnical engineering, in particular to an assembly type rockfall emergency blocking structure which comprises a plurality of prefabricated blocking nets, a plurality of prefabricated micro piles and a plurality of prefabricated blocking columns. The prefabricated micro piles are embedded and inserted into a foundation pit which is deeply excavated in advance; the prefabricated micro pile comprises a first connecting section, and the first connecting section is located on the upper portion of the prefabricated micro pile. The prefabricated blocking column comprises a second connecting section, and the second connecting section is located on the lower portion of the prefabricated blocking column. The first connecting section is connected with the second connecting section, and the first connecting section and the second connecting section are detachable; the prefabricated blocking nets are connected between every two adjacent prefabricated blocking columns, and the prefabricated blocking nets and the prefabricated blocking columns are detachable. The dangerous rock emergency danger reduction barrier is convenient to disassemble and assemble and can be recycled.

Description

Technical Field

[0001] The present invention relates to the field of geotechnical engineering, and in particular to an assembled rockfall emergency blocking structure. Background Art

[0002] The steep and high slopes of mountain roads are often faced with rockfall impact disasters, which will pose great potential risks to road facilities, passing vehicles and pedestrians. In particular, the broken rock structure with a high degree of surface weathering is more prone to collapse due to environmental factors such as earthquakes and construction vibrations. Due to the long mileage of mountain roads and the many steep and high slopes along the road, it is difficult to implement slope reinforcement and management projects on a large scale due to construction conditions and economic costs. For slopes that are generally stable but frequently experience rockfall, passive interception measures are often used. However, the existing interception measures are conventional engineering methods that require large-scale machinery and equipment to excavate foundation pits, cast-in-place concrete foundations and railings, and install rock-blocking nets after reaching the maintenance age. The entire construction process is complex, requires a large number of personnel and a long construction period, making it difficult to quickly respond to the disaster phenomenon of frequent falling rocks.

[0003] In view of this, this application is hereby filed. Summary of the invention

[0004] The technical problem to be solved by the present invention is that the existing barrier construction method has complicated procedures, is time-consuming and labor-intensive, and is difficult to quickly respond to frequent rockfall disasters.

[0005] In order to solve the above technical problems, the present invention is implemented by the following technical solutions:

[0006] Provided is an assembled rockfall emergency blocking structure, comprising a plurality of prefabricated blocking nets, a plurality of prefabricated micro piles and a plurality of prefabricated blocking columns; the prefabricated micro piles are buried in a foundation pit excavated in advance; the prefabricated micro piles include a first connecting section, which is located at the upper part of the prefabricated micro piles; the prefabricated blocking columns include a second connecting section, which is located at the lower part of the prefabricated blocking columns; the first connecting section is connected to the second connecting section, and the first connecting section and the second connecting section are detachable; the prefabricated blocking net is connected between two adjacent prefabricated blocking columns, and the prefabricated blocking net and the prefabricated blocking columns are detachable.

[0007] Furthermore, the first connecting section is a cavity with an opening at the top; the first connecting section includes a first connecting portion and a second connecting portion; the first connecting portion is located at the upper part of the first connecting section, the second connecting portion is located at the lower part of the first connecting section, and the first connecting portion and the second connecting portion are integrally formed; the first connecting portion is a columnar structure with multiple edges; the second connecting portion has a first meshing tooth and a second meshing tooth; the first meshing tooth is one or more, the second meshing tooth is one or more, and the tooth tip of the first meshing tooth is opposite to the tooth tip of the second meshing tooth; the first connecting portion includes two first locking through holes arranged oppositely; the second connecting section is a solid cylinder; the second connecting section includes a third connecting portion and a fourth connecting portion; the third connecting portion is located at the upper part of the second connecting section, and the fourth connecting portion is located at the At the lower part of the connecting section, the third connecting part and the fourth connecting part are integrally formed; the third connecting part and the first connecting part have the same first physical characteristics, and the first physical characteristics include shape and size; the third connecting part includes a second locking through hole and a latch, the position of the second locking through hole corresponds to the position of the first locking through hole, the diameter of the first locking through hole = the diameter of the second locking through hole = the diameter of the latch, and the diameter of the first locking through hole, the diameter of the second locking through hole or the diameter of the third locking through hole is ≥3cm; the fourth connecting part includes a third meshing tooth and a fourth meshing tooth; the third meshing tooth and the first meshing tooth have the same second physical characteristics, and the fourth meshing tooth and the second meshing tooth have the same second physical characteristics; the second physical characteristics include shape, size, number, position and tooth tip direction.

[0008] Furthermore, the first connecting section includes a U-shaped ring buckle and a plurality of inserted bars; along the length direction of the lower part of the prefabricated micropile, the two legs of the U-shaped ring buckle are fixedly inserted into the top end of the lower part of the prefabricated micropile, and one end of the inserted bar is fixedly inserted into the top end of the lower part of the prefabricated micropile; the second connecting section includes a first plug-in hole, a plurality of second plug-in holes, an insertion through hole and an inserted steel bar; the first plug-in hole and the plurality of second plug-in holes are both located inside the second connecting section; the length direction of the insertion through hole is perpendicular to the length direction of the second connecting section, and the distance from the insertion through hole to the bottom end of the second connecting section is equal to the distance from the bent portion of the U-shaped ring buckle to the bottom end of the first connecting section; in the connected state, the U-shaped ring buckle is inserted into the first plug-in hole, and the plurality of inserted bars are inserted into the plurality of second plug-in holes one by one, and the inserted steel bar passes through the insertion through hole and the bent portion of the U-shaped ring buckle.

[0009] Furthermore, the length direction of the first plug hole is the same as the length direction of the U-shaped ring buckle, the length of the first plug hole is ≥ the length of the U-shaped ring buckle, and the width of the first plug hole is ≥ the width of the U-shaped ring buckle; the length direction of the second plug hole is the same as the length direction of the inserted bar, the length of the second plug hole is ≥ the length of the inserted bar, and the second plug hole corresponds to the inserted bar one by one; the bending portion of the U-shaped ring buckle is semicircular; the diameter of the insertion through hole = the diameter of the semicircle = the diameter of the inserted steel bar; the diameter of the insertion through hole, the diameter of the bending portion of the U-shaped ring buckle or the diameter of the inserted steel bar is ≥3cm; the diameter of the steel bar used to prepare the U-shaped ring buckle and the diameter of the inserted bar are both ≥1cm; the diameter of the inserted bar = the diameter of the second plug hole, the diameter of the inserted bar or the diameter of the second plug hole is ≥1cm; the length of the inserted bar or the length of the second plug hole is ≥30cm.

[0010] Furthermore, the prefabricated barrier net is a mesh structure, comprising a plurality of transverse steel strands and a plurality of longitudinal steel strands; both ends of each of the transverse steel strands are respectively fixedly connected with a first buckling mechanism; the upper part of the prefabricated barrier column is fixedly connected with a plurality of second buckling mechanisms; the first buckling mechanism matches the second buckling mechanism, and the first buckling mechanism corresponds to the second buckling mechanism one by one.

[0011] Furthermore, the prefabricated barrier net is a mesh structure, comprising a plurality of transverse steel strands and a plurality of longitudinal steel strands; the upper portion of the prefabricated barrier column comprises a plurality of steel strand fixing mechanisms; along the length direction of the upper portion of the prefabricated barrier column, the plurality of steel strand fixing mechanisms are arranged at intervals, and the interval distance between two adjacent steel strand fixing mechanisms is equal to the interval distance between two adjacent transverse steel strands; in a connected state, one end of the transverse steel strand is fixedly connected to the steel strand fixing mechanism.

[0012] Furthermore, the steel strand fixing mechanism includes a plurality of steel strand insertion holes and a plurality of steel strand tail fixing piles; the length direction of the steel strand insertion holes is perpendicular to the length direction of the upper part of the prefabricated retaining column; along the length direction of the steel strand insertion holes, the steel strand insertion holes penetrate the upper part of the prefabricated retaining column; on the cross section of the upper part of the prefabricated retaining column, a plurality of the steel strand insertion holes intersect at the center of the cross section, and the plurality of the steel strand insertion holes are evenly distributed; the steel strand tail fixing piles are fixedly connected to the surface of the prefabricated retaining column, the steel strand tail fixing piles are close to the ends of the steel strand insertion holes, and one steel strand insertion hole corresponds to two steel strand tail fixing piles.

[0013] Furthermore, the spacing between two adjacent transverse steel strands is ≤30 cm, and the spacing between two adjacent longitudinal steel strands is ≤30 cm; the density of the transverse steel strand or the density of the longitudinal steel strand is ≥7.83 g / cm 3 .

[0014] Furthermore, the distance between two adjacent prefabricated barrier columns (3) is ≤10m.

[0015] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0016] 1. The retaining net, retaining column and retaining pile are all prefabricated parts. Among them, the retaining pile is installed by directly burying it in the foundation pit on site. The retaining net and the retaining column, as well as the retaining column and the retaining pile are connected by assembly and are detachable. Compared with traditional concrete retaining walls, it has the advantages of convenient and quick installation and disassembly and can be recycled.

[0017] 2. Two assembly methods between the retaining piles and the retaining columns are provided: in the first assembly method, the first connecting section is a cavity with an opening at the top, and the second connecting section is a solid column, and the two are connected in a nested manner, and the first connecting section and the second connecting section have mutually matching polyhedral column structures and meshing tooth structures, and the first connecting section and the second connecting section are further meshed on the basis of the nested connection method, thereby enhancing the stability of the connection between the retaining piles and the retaining columns, and thereby enhancing the overall strength of the dangerous rock emergency risk reduction barrier; in the second method, the first connecting section and the second connecting section are anchored by multiple dowel bars and U-shaped buckles, and in addition, interspersed steel bars matching the size of the U-shaped buckles are added, thereby increasing the stability of the anchoring, and thereby enhancing the overall strength of the dangerous rock emergency risk reduction barrier.

[0018] 3. Two assembly methods between the retaining net and the retaining column are provided: in the first assembly method, the retaining net and the retaining column are connected by buckling, and in the second assembly method, the retaining net and the retaining column are connected by anchoring. Both assembly methods can achieve rapid assembly and disassembly, and both buckling and anchoring can ensure the connection strength between the retaining net and the retaining column, thereby ensuring the overall strength of the dangerous rock emergency risk reduction barrier.

[0019] 4. Any assembly method between the blocking pile and the blocking column can be used in combination with any assembly method between the blocking column and the blocking net. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the overall structure of an assembled rockfall emergency barrier structure provided in Example 1 of the present invention;

[0022] Figure 2 A schematic diagram of the structure of a prefabricated micropile in a nested and meshed manner provided in Example 1 of the present invention;

[0023] Figure 3 A schematic diagram of the structure of a prefabricated barrier column in a nested and meshing manner provided in Example 1 of the present invention;

[0024] Figure 4 A schematic diagram of the connection relationship between the prefabricated micro pile and the prefabricated retaining column in the nesting and meshing mode provided in Example 1 of the present invention;

[0025] Figure 5 A schematic diagram of the connection relationship between the prefabricated barrier net and the prefabricated barrier column in the buckle connection mode provided in Example 1 of the present invention;

[0026] Figure 6 A schematic diagram of the structure of a prefabricated micropile in an anchoring mode provided in Example 2 of the present invention;

[0027] Figure 7 A cross-sectional top view of a prefabricated retaining column in an anchoring mode provided in Example 2 of the present invention;

[0028] Figure 8 A schematic diagram of the structure of a prefabricated retaining column in an anchoring mode provided in Example 3 of the present invention;

[0029] Fig. 9 Schematic diagram of the connection relationship between the prefabricated retaining net and the prefabricated retaining column under the anchoring method provided in Example 3 of the present invention.

[0030] Marks and corresponding parts names in the attached drawings:

[0031] 1-prefabricated retaining net, 2-prefabricated micro pile, 3-prefabricated retaining column, 11-first buckling mechanism, 21-first connecting section, 31-second connecting section, 211-first connecting part, 212-second connecting part, 213-U-shaped ring buckle, 214-inserted reinforcement, 311-third connecting part, 312-fourth connecting part, 313-first plug hole, 314-second plug hole, 315-insertion through hole, 316-insertion reinforcement, 317-second buckling mechanism, 318-steel strand insertion through hole, 319-steel strand tail fixing pile, 2121-first meshing tooth, 2122-second meshing tooth, 3121-third meshing tooth, 3122-fourth meshing tooth. DETAILED DESCRIPTION

[0032] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0033] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present invention. However, it is apparent to one of ordinary skill in the art that these specific details are not necessarily employed to practice the present invention. In other embodiments, in order to avoid obscuring the present invention, well-known structures, circuits, materials, or methods are not specifically described.

[0034] Throughout the specification, references to "one embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment," "an embodiment," "an example," or "an example" appearing in various places throughout the specification do not necessarily all refer to the same embodiment or example. In addition, particular features, structures, or characteristics may be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. In addition, it will be appreciated by those of ordinary skill in the art that the figures provided herein are for illustrative purposes and that the figures are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0035] In the description of the present invention, the directions or positional relationships indicated by terms such as “front”, “rear”, “left”, “right”, “up”, “down”, “vertical”, “horizontal”, “high”, “low”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the scope of protection of the present invention.

[0036] Example 1: This example provides an assembled rockfall emergency barrier structure consisting of multiple prefabricated barrier nets, multiple prefabricated micropiles, and multiple prefabricated barrier columns. In order to more clearly illustrate the structural features of the emergency rockfall barrier, this example only uses one barrier unit as an example, and the barrier unit consists of only one prefabricated barrier net, two prefabricated micropiles, and two prefabricated barrier columns. Figure 1 As described above, the prefabricated micro pile 2 is buried in a foundation pit that has been dug in advance. There is a one-to-one correspondence between the prefabricated micro pile 2 and the foundation pit, that is, one prefabricated micro pile 2 is buried in one foundation pit. In order to ensure the stability and strength of the barrier as a whole, the burial depth of the prefabricated micro pile 2 should be ≥2m. In addition, there is also a one-to-one correspondence between the prefabricated micro pile 2 and the prefabricated barrier column 3, that is, one prefabricated micro pile 2 is connected to one prefabricated barrier column 3. In terms of connection, the upper part of the prefabricated micro pile 2 is connected to the lower part of the prefabricated barrier column 3. Specifically, if Figure 2 As shown, the upper part of the prefabricated micropile 2 has a first connecting section 21, and the lower part of the prefabricated blocking column 3 has a second connecting section 31, and the first connecting section 21 is connected to the second connecting section 31, and the first connecting section 21 and the second connecting section 31 are detachable. In addition, the prefabricated blocking net 1 is connected between two adjacent prefabricated blocking columns 3, and the prefabricated blocking net 1 and the prefabricated blocking columns 3 are also detachable.

[0037] It should be noted that in order to enhance the overall strength of the emergency risk reduction barrier for dangerous rocks, the outer diameter of the prefabricated micro-shape should be ≥20cm, and the outer diameter of the prefabricated barrier column 3 should be ≥20cm.

[0038] In order to specifically illustrate the connection method between the first connecting section 21 and the second connecting section 31 and the connection method between the prefabricated blocking column 3 and the prefabricated blocking net 1, this embodiment will be combined with Figures 2 to 5 The structure of the first connecting section 21 of the prefabricated micropile 2, the structure of the second connecting section 31 of the prefabricated barrier column 3 and the structure of the prefabricated barrier net 1 are described in detail as follows:

[0039] The first connection section 21 of the prefabricated micropile 2 is Figure 2 The cavity with a top opening shown in the figure has a first connecting portion 211 and a second connecting portion 212. The first connecting portion 211 is located at the upper part of the first connecting segment 21, and the second connecting portion 212 is located at the lower part of the first connecting segment 21, and the first connecting portion 211 and the second connecting portion 212 are integrally formed. Further, the first connecting portion 211 is a columnar structure with multiple edges, such as Figure 2 The first connecting portion 211 shown is a quadrangular prism structure; the second connecting portion 212 is a toothed structure having a first meshing tooth 2121 and a second meshing tooth 2122, and the tooth tip of the first meshing tooth 2121 is in the opposite direction to the tooth tip of the second meshing tooth 2122, as shown in FIG. Figure 2The second connecting portion 212 shown has four first meshing teeth 2121 with tooth tips facing downward and one second meshing tooth 2122 with tooth tip facing upward ( Figure 2 The four first meshing teeth 2121 shown are located at the periphery, and the second meshing teeth 2122 are located in the middle of the four first meshing teeth 2121). Figure 2 The upper portion of the first connecting portion 211 shown also has two first locking through holes arranged opposite to each other.

[0040] The second connecting section 31 of the prefabricated blocking column 3 is Figure 3 The solid cylinder shown in FIG. 1 has a third connecting portion 311 and a fourth connecting portion 312. The third connecting portion 311 is located at the upper part of the second connecting segment 31, and the fourth connecting portion 312 is located at the lower part of the second connecting segment 31, and the third connecting portion 311 and the fourth connecting portion 312 are integrally formed. Further, the third connecting portion 311 is also a columnar structure with multiple edges, such as Figure 3 The third connecting portion 311 shown is also a quadrangular prism structure, and the third connecting portion 311 has the same size as the first connecting portion 211; in addition, the third connecting portion 311 also includes a latch, and a second locking through hole is provided at the upper portion of the third connecting portion 311, and the position of the second locking through hole corresponds to the position of the first locking through hole; in terms of size, the diameter of the first locking through hole = the diameter of the second locking through hole = the diameter of the latch, and in order to improve the blocking effect, the diameter of the first locking through hole, the diameter of the second locking channel and the diameter of the latch are all ≥3cm.

[0041] The fourth connecting portion 312 is also a toothed structure having a third meshing tooth 3121 and a fourth meshing tooth 3122, and the third meshing tooth 3121 is the same as the first meshing tooth 2121 in shape, size, number, position and tooth tip orientation, and the fourth meshing tooth 3122 is the same as the second meshing tooth 2122 in shape, size, number, position and tooth tip orientation.

[0042] It should be noted that: first, based on the prefabricated micro pile 2 with a cavity structure and the prefabricated barrier column 3 with a solid column structure, the first connecting section 21 and the second connecting section 31 are connected in a nested manner as a whole, such as Figure 4 The second connecting section 31 is nested inside the first connecting section 21; secondly, the first connecting portion 211 and the second connecting portion 212 are columnar structures with multiple edges of the same shape and size, the purpose of which is to avoid relative displacement in the circumferential direction between the first connecting section 21 and the second connecting section 31 under the action of external force after the nested connection, thereby enhancing the stability between the first connecting section 21 and the second connecting section 31; thirdly, the shapes of the first connecting portion 211 and the second connecting portion 212 are different from each other. Figure 2 and Figure 3In addition to the quadrangular prism structure shown, it can also be a triangular prism structure, a pentagonal prism structure, a hexagonal prism structure, etc., but the number of edges of the first connecting portion 211 and the second connecting portion 212 should not be too many, that is, it should be avoided that the first connecting portion 211 and the second connecting portion 212 are approximately cylindrical structures as a whole, resulting in failure to achieve the technical effect of avoiding the relative displacement of the first connecting segment 21 and the second connecting segment 31 in the circumferential direction; Fourth, in order to avoid the relative displacement in the circumferential direction, the first connecting portion 211 and the second connecting portion 212 can also be a columnar structure with a star-shaped cross section. For example, the first connecting portion 211 and the second connecting portion 212 adopt a columnar structure with a five-pointed star cross section, but it should also be avoided that the first connecting portion 211 and the second connecting portion 21 2 has too many edges, which makes it inconvenient to quickly connect the first connection section 21 and the second connection section 31; fifth, the second connection section 212 is provided with a first meshing tooth 2121 and a second meshing tooth 2122, and the fourth connection section 312 is provided with a third meshing tooth 3121 and a fourth meshing tooth 3122 matching the second connection section 212, in order to further enhance the stability between the first connection section 21 and the second connection section 31 on the basis of the nested connection; sixth, the number of the first meshing teeth 2121 can be one or more, and the number of the second meshing teeth 2122 can also be one or more, but the number of meshing teeth should also be avoided to be too many, which makes it inconvenient to quickly connect the first connection section 21 and the second connection section 31. Seventh, in order to avoid the outer wall of the first connection section 21 from cracking under external impact and the second connection section 31 from breaking under external force impact after connection, the diameter of the first connection section 21 or the diameter of the second connection section 31 should be controlled within 10cm to 15cm; eighth, in order to improve the blocking effect, the distance between two adjacent prefabricated blocking columns 3 should be ≤10m.

[0043] like Figure 5 As shown, the prefabricated barrier net 1 is a mesh structure, which is interwoven by a plurality of transverse steel strands and a plurality of longitudinal steel strands. Further, the two ends of each transverse steel strand are respectively fixedly connected with a first buckle mechanism 11; correspondingly, the upper part of the prefabricated barrier column 3 is fixedly connected with a plurality of second buckle mechanisms 317 corresponding to the first buckle mechanisms 11, and the first buckle mechanisms 11 match the second buckle mechanisms 317.

[0044] It should be noted that, first, the first buckling mechanism 11 can be a stainless steel hook, and the second buckling mechanism 317 can be a stainless steel hanging ring. The prefabricated barrier net 1 and the prefabricated barrier column 3 are connected to each other by buckling, so as to realize quick assembly and disassembly, and this hanging method can also ensure the connection strength between the two. In addition, the position between the hook and the hanging ring can be called; second, the first buckling mechanism 11 and the second buckling mechanism 317 can also adopt other product components with the same technical effect; third, in order to increase the blocking effect of the prefabricated barrier net 1 against falling rocks, the spacing between two adjacent transverse steel strands should be ≤30cm, and the spacing between two adjacent longitudinal steel strands should be ≤30cm; fourth, the density of the transverse steel strand or the density of the longitudinal steel strand is preferably ≥7.83g / cm3.

[0045] To sum up, the retaining net, retaining columns and retaining piles of the assembled rockfall emergency retaining structure provided in this embodiment are all prefabricated parts, the retaining piles are installed by directly burying them in the foundation pit on site, the retaining net and the retaining columns are assembled by snap-fitting, and the micro-piles and the retaining columns are assembled by nesting and meshing. The retaining net and the retaining columns are easy and quick to disassemble, can meet the overall stability and strength of emergency risk reduction, and the retaining net, retaining columns and retaining piles can be recycled.

[0046] Embodiment 2: The difference between the assembled rockfall emergency blocking structure provided in this embodiment and the assembled rockfall emergency blocking structure provided in the above embodiment 1 is: first, the structure of the first connecting section; second, the structure of the second connecting section; third, the connection method between the first connecting section and the second connecting section. Figure 6 and Figure 7 The above three differences are elaborated in detail, and reference is made to Example 1 for the remaining structural features of the dangerous rock emergency risk reduction barrier.

[0047] Difference 1: The structure of the first connection section of the prefabricated micropile

[0048] like Figure 6 As shown, the first connection section 21 of the prefabricated micropile 2 includes a U-shaped ring buckle 213 and a plurality of inserted bars 214. Along the length direction of the lower portion of the prefabricated micropile 2, the two legs of the U-shaped ring buckle 213 and one end of the inserted bars 214 are fixedly plugged into the top of the lower portion of the prefabricated micropile 2, and the plurality of inserted bars 214 are distributed around the U-shaped ring buckle 213 in an annular manner.

[0049] It should be noted that, under the premise of ensuring the overall strength of the dangerous rock emergency risk reduction barrier, the number of U-shaped ring buckles 213 and the number of dowel bars 214 can be determined according to actual conditions.

[0050] Difference 2: Structure of the second connecting section 31 of the prefabricated barrier column 3

[0051] like Figure 6 and Figure 7 As shown, the second connection section 31 of the prefabricated blocking column 3 includes a first plug hole 313, a plurality of second plug holes 314, an insertion through hole 315 and an insertion steel bar 316. The first plug hole 313 and the plurality of second plug holes 314 are both located inside the second connection section 31, and the length direction of the first plug hole 313 is the same as the length direction of the U-shaped ring buckle 213, so that the U-shaped ring buckle 213 can be quickly inserted into the first plug hole 313 during installation; in addition, the length of the first plug hole 313 should be ≥ the length of the U-shaped ring buckle 213, and the width of the first plug hole 313 should be ≥ the width of the U-shaped ring buckle 213, so that the U-shaped ring buckle 213 can be fully inserted into the first plug hole 313. Similarly, the length direction of the second plug hole 314 is the same as the length direction of the inserted bar 214, and the position of the second plug hole 314 corresponds to the position of the inserted bar 214 one by one, so that the inserted bar 214 can be quickly inserted into the second plug hole 314 during installation; in addition, the length of the second plug hole 314 should be ≥ the length of the inserted bar 214, so that the inserted bar 214 can be fully inserted into the second plug hole 314 during installation; the diameter of the inserted bar 214 = the diameter of the second plug hole 314, to ensure the stability of the connection between the first connecting section 21 and the second connecting section 31.

[0052] In order to ensure that the inserted steel bar 316 can be tightly combined with the insertion hole 315 and the U-shaped ring buckle 213 after passing through, thereby improving the connection stability between the first connecting section 21 and the second connecting section 31, in this embodiment, the length direction of the insertion hole 315 is perpendicular to the length direction of the second connecting section 31, and the distance from the insertion hole 315 to the bottom end of the second connecting section 31 is equal to the distance from the bent portion of the U-shaped ring buckle 213 to the bottom end of the first connecting section 21, and the bent portion of the U-shaped ring buckle 213 is semicircular, and the diameter of the insertion hole 315 is equal to the semicircular diameter and the diameter of the inserted steel bar 316.

[0053] It should be noted that in order to ensure the overall strength of the dangerous rock emergency risk reduction barrier, the diameter of the through hole 315, the diameter of the bent part of the U-shaped ring buckle 213 or the diameter of the inserted steel bar 316 should be ≥3cm, the diameter of the steel bar used to prepare the U-shaped ring buckle 213 should be ≥1cm, the diameter of the inserted steel bar 214 or the diameter of the second plug hole 314 should be ≥1cm, and the length of the inserted steel bar 214 or the length of the second plug hole 314 should be ≥30cm.

[0054] Difference 3: Connection method between the first connection segment and the second connection segment

[0055] When connected, the U-shaped ring buckle 213 is inserted into the first plug hole 313, and the multiple inserted bars 214 are inserted into the multiple second plug holes 314 one by one. The inserted steel bars 316 pass through the insertion holes 315 and the bent part of the U-shaped ring buckle 213.

[0056] In summary, the present embodiment provides an assembled rockfall emergency barrier structure, in which the barrier net, barrier columns and barrier piles are also prefabricated parts, the barrier piles are also installed by directly burying them in the foundation pit on site, the barrier net and the barrier columns are also assembled by snap-fitting, and the micropiles and the barrier columns are assembled by anchoring. It also has the advantage of convenient and quick disassembly, and can meet the overall stability and strength of emergency risk reduction barriers. The barrier net, barrier columns and barrier piles can also be recycled.

[0057] Embodiment 3: The difference between the assembled rockfall emergency blocking structure provided in this embodiment and the assembled rockfall emergency blocking structure provided in the above embodiment 1 is: first, the structure of the prefabricated blocking column; second, the structure of the prefabricated blocking net; third, the connection method between the prefabricated blocking net and the prefabricated blocking column. Figure 8 and Fig. 9 The above three differences are elaborated in detail, and reference is made to Example 1 for the remaining structural features of the dangerous rock emergency risk reduction barrier.

[0058] Difference 1: The structure of prefabricated retaining columns

[0059] like Figure 8 As shown, the upper part of the prefabricated retaining column 3 is provided with a plurality of steel strand fixing mechanisms, and along the length direction of the upper part of the prefabricated retaining column 3, the plurality of steel strand fixing mechanisms are arranged at intervals, and the interval distance between two adjacent steel strand fixing mechanisms is equal to the interval distance between two adjacent transverse steel strands.

[0060] Continue to refer Fig. 9 The steel strand fixing mechanism includes a plurality of steel strand insertion holes 318 and a plurality of steel strand tail fixing piles 319. The length direction of the steel strand insertion holes 318 is perpendicular to the length direction of the upper part of the prefabricated retaining column 3. Along the length direction of the steel strand insertion holes 318, the steel strand insertion holes 318 penetrate the upper part of the prefabricated retaining column 3; on the cross section of the upper part of the prefabricated retaining column 3, a plurality of steel strand insertion holes 318 intersect at the center of the cross section and are evenly distributed on the cross section. Furthermore, the steel strand tail fixing piles 319 are fixedly connected to the surface of the prefabricated retaining column 3, the steel strand tail fixing piles 319 are close to the ends of the steel strand insertion holes 318, and one steel strand insertion hole 318 corresponds to two steel strand tail fixing piles 319.

[0061] Difference 2: The structure of the prefabricated retaining net

[0062] The difference from the prefabricated barrier net 1 provided in the first embodiment is that the prefabricated barrier net 1 in the present embodiment does not have the first buckle mechanism 11. Accordingly, the prefabricated barrier column 3 does not have the second buckle mechanism 317 either.

[0063] Difference 3: Connection method between prefabricated retaining net and prefabricated retaining column

[0064] When connecting, the following operations are performed for each transverse steel strand: one end of the transverse steel strand is inserted into one end of any steel strand insertion hole 318 of the corresponding steel strand fixing mechanism, and is passed out from the other end of the steel strand insertion hole 318, and then the end of the passed steel strand is wrapped and fixed on the nearest steel strand tail fixing pile 319.

[0065] It should be noted that: first, the retaining net, retaining column and retaining pile of the assembled rockfall emergency retaining structure provided in this embodiment are also prefabricated parts, and the retaining piles are also installed by directly burying them in the foundation pit on site. The retaining net and the retaining column are assembled in an anchoring manner, and the micro-piles and the retaining columns are assembled in a nesting and meshing manner. It also has the advantages of convenient and quick disassembly, can meet the overall stability and strength of emergency risk reduction, and the retaining net, retaining column and retaining pile can be recycled; second, the steel strand fixing mechanism includes a plurality of steel strand insertion through holes 318 evenly distributed on the cross section, and each of the steel strand insertion through holes 318 has two ends. There is a corresponding steel strand tail fixing pile 319, the purpose of which is to facilitate the anchoring of the prefabricated retaining column 3 and the prefabricated retaining net 1; specifically, assuming that the steel strand fixing mechanism only includes one steel strand insertion hole 318 and the steel strand tail fixing pile 319 is only provided at one end of the steel strand insertion hole 318, then when the prefabricated retaining column 3 and the prefabricated micro pile 2 are connected, it cannot be ensured that one end of the steel strand insertion hole 318 is opened in the extension direction of the transverse steel strand, and it cannot be ensured that the other end of the transverse steel strand after passing through the steel strand insertion hole 318 has a steel strand tail fixing pile 319 for fixing, that is, it is not convenient for the prefabricated retaining column 3 and the prefabricated retaining net 1 to be anchored.

[0066] Embodiment 4: The assembled rockfall emergency blocking structure provided in this embodiment adopts the structure of the first connecting section, the structure of the second connecting section and the connection method between the first connecting section and the second connecting section described in Embodiment 2, and adopts the structure of the prefabricated blocking column, the structure of the prefabricated blocking net and the connection method between the prefabricated blocking net and the prefabricated blocking column described in Embodiment 3. That is, this embodiment combines the anchor connection method between the prefabricated micro pile and the prefabricated blocking column with the anchor connection method between the prefabricated blocking column and the prefabricated blocking net, which can also achieve the technical effect of rapid disassembly and recycling.

[0067] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An assembled rockfall emergency barrier structure, characterized in that: The invention comprises a plurality of prefabricated retaining nets (1), a plurality of prefabricated micro piles (2) and a plurality of prefabricated retaining columns (3); the prefabricated micro piles (2) are buried in a foundation pit excavated in advance; the prefabricated micro piles (2) comprise a first connecting section (21), the first connecting section (21) being located at the upper part of the prefabricated micro piles (2); the prefabricated retaining columns (3) comprise a second connecting section (31), the second connecting section (31) being located at the lower part of the prefabricated retaining columns (3); the first connecting section (21) is connected to the second connecting section (31), and the first connecting section (21) and the second connecting section (31) are detachable; the prefabricated retaining net (1) is connected between two adjacent prefabricated retaining columns (3), and the prefabricated retaining net (1) and the prefabricated retaining columns (3) are detachable.

2. The assembled rockfall emergency blocking structure according to claim 1, characterized in that: The first connecting section (21) is a cavity with an opening at the top; the first connecting section (21) comprises a first connecting portion (211) and a second connecting portion (212); the first connecting portion (211) is located at the upper portion of the first connecting section (21), the second connecting portion (212) is located at the lower portion of the first connecting section (21), and the first connecting portion (211) and the second connecting portion (212) are integrally formed; the first connecting portion (211) is a columnar structure with a plurality of edges; the second connecting portion (212) comprises a first meshing tooth (2121) and a second meshing tooth (2122); there are one or more first meshing teeth (2121), there are one or more second meshing teeth (2122), and the tooth tip of the first meshing tooth (2121) is oriented in the opposite direction to the tooth tip of the second meshing tooth (2122); the first connecting portion (211) comprises two first locking through holes arranged opposite to each other; The second connecting section (31) is a solid cylinder; the second connecting section (31) comprises a third connecting portion (311) and a fourth connecting portion (312); the third connecting portion (311) is located at the upper portion of the second connecting section (31), the fourth connecting portion (312) is located at the lower portion of the second connecting section (31), and the third connecting portion (311) and the fourth connecting portion (312) are integrally formed; the third connecting portion (311) and the first connecting portion (211) have the same first physical characteristics, the first physical characteristics comprising shape and size; the third connecting portion (311) comprises a second locking through hole and a latch , the position of the second locking through hole corresponds to the position of the first locking through hole, the diameter of the first locking through hole = the diameter of the second locking through hole = the diameter of the latch, the diameter of the first locking through hole, the diameter of the second locking through hole or the diameter of the third locking through hole is ≥ 3 cm; the fourth connecting portion (312) includes a third meshing tooth (3121) and a fourth meshing tooth (3122); the third meshing tooth (3121) and the first meshing tooth (2121) have the same second physical feature, and the fourth meshing tooth (3122) and the second meshing tooth (2122) have the same second physical feature; The second physical characteristics include shape, size, number, position and orientation of tooth tips.

3. The assembled rockfall emergency blocking structure according to claim 1, characterized in that: The first connecting section (21) comprises a U-shaped ring buckle (213) and a plurality of inserted ribs (214); along the length direction of the lower part of the prefabricated micropile (2), two legs of the U-shaped ring buckle (213) are fixedly inserted into the top of the lower part of the prefabricated micropile (2), and one end of the inserted rib (214) is fixedly inserted into the top of the lower part of the prefabricated micropile (2); The second connecting section (31) comprises a first plugging hole (313), a plurality of second plugging holes (314), an insertion hole (315) and an insertion steel bar (316); the first plugging hole (313) and the plurality of second plugging holes (314) are all located inside the second connecting section (31); the length direction of the insertion hole (315) is perpendicular to the length direction of the second connecting section (31), and the distance from the insertion hole (315) to the bottom end of the second connecting section (31) is equal to the distance from the bent portion of the U-shaped ring buckle (213) to the bottom end of the first connecting section (21); in a connected state, the U-shaped ring buckle (213) is inserted into the first plugging hole (313), the plurality of inserted steel bars (214) are inserted into the plurality of second plugging holes (314) one by one, and the insertion steel bar (316) passes through the insertion hole (315) and the bent portion of the U-shaped ring buckle (213).

4. The assembled rockfall emergency blocking structure according to claim 3 is characterized in that: The length direction of the first plugging hole (313) is the same as the length direction of the U-shaped ring buckle (213), the length of the first plugging hole (313) is greater than or equal to the length of the U-shaped ring buckle (213), and the width of the first plugging hole (313) is greater than or equal to the width of the U-shaped ring buckle (213); The length direction of the second plug hole (314) is the same as the length direction of the inserted bar (214), the length of the second plug hole (314) is greater than or equal to the length of the inserted bar (214), and the second plug hole (314) corresponds to the inserted bar (214) one by one; The bent portion of the U-shaped ring buckle (213) is semicircular; the diameter of the insertion through hole (315) = the diameter of the semicircle = the diameter of the inserted steel bar (316); the diameter of the insertion through hole (315), the diameter of the bent portion of the U-shaped ring buckle (213) or the diameter of the inserted steel bar (316) is ≥3 cm; the diameter of the steel bar used to prepare the U-shaped ring buckle (213) is ≥1 cm; the diameter of the inserted steel bar (214) = the diameter of the second plug hole (314), the diameter of the inserted steel bar (214) or the diameter of the second plug hole (314) is ≥1 cm; the length of the inserted steel bar (214) or the length of the second plug hole (314) is ≥30 cm.

5. An assembled rockfall emergency barrier structure according to any one of claims 1 to 4, characterized in that: The prefabricated barrier net (1) is a mesh structure, comprising a plurality of transverse steel strands and a plurality of longitudinal steel strands; the two ends of each of the transverse steel strands are respectively fixedly connected with a first buckling mechanism (11); the upper part of the prefabricated barrier column (3) is fixedly connected with a plurality of second buckling mechanisms (317); the first buckling mechanism (11) matches the second buckling mechanism (317), and the first buckling mechanism (11) corresponds to the second buckling mechanism (317) one by one.

6. The assembled rockfall emergency blocking structure according to claim 5, characterized in that: The spacing between two adjacent transverse steel strands is ≤30cm, and the spacing between two adjacent longitudinal steel strands is ≤30cm; the density of the transverse steel strand or the density of the longitudinal steel strand is ≥7.83g / cm 3 .

7. An assembled rockfall emergency barrier structure according to any one of claims 1 to 4, characterized in that: The prefabricated barrier net (1) is a mesh structure, and the prefabricated barrier net (1) includes a plurality of transverse steel strands and a plurality of longitudinal steel strands; the upper portion of the prefabricated barrier column (3) includes a plurality of steel strand fixing mechanisms; along the length direction of the upper portion of the prefabricated barrier column (3), the plurality of steel strand fixing mechanisms are arranged at intervals, and the interval distance between two adjacent steel strand fixing mechanisms is equal to the interval distance between two adjacent transverse steel strands; in the connected state, one end of the transverse steel strand is fixedly connected to the steel strand fixing mechanism.

8. The assembled rockfall emergency blocking structure according to claim 7, characterized in that: The steel strand fixing mechanism comprises a plurality of steel strand insertion holes (318) and a plurality of steel strand tail fixing piles (319); the length direction of the steel strand insertion holes (318) is perpendicular to the length direction of the upper part of the prefabricated barrier column (3); along the length direction of the steel strand insertion holes (318), the steel strand insertion holes (318) penetrate the upper part of the prefabricated barrier column (3); on the cross section of the upper part of the prefabricated barrier column (3), the plurality of steel strand insertion holes (318) intersect at the center of the cross section, and the plurality of steel strand insertion holes (318) are evenly distributed; the steel strand tail fixing piles (319) are fixedly connected to the surface of the prefabricated barrier column (3), the steel strand tail fixing piles (319) are close to the ends of the steel strand insertion holes (318), and one steel strand insertion hole (318) corresponds to two steel strand tail fixing piles (319).

9. The assembled rockfall emergency barrier structure according to claim 7, characterized in that: The spacing between two adjacent transverse steel strands is ≤30cm, and the spacing between two adjacent longitudinal steel strands is ≤30cm; the density of the transverse steel strand or the density of the longitudinal steel strand is ≥7.83g / cm 3 .

10. An assembled rockfall emergency barrier structure according to any one of claims 1 to 4, characterized in that: The distance between two adjacent prefabricated barrier columns (3) is ≤10m.

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