Assembly type rockfall emergency blocking structure

Abstract

The utility model 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 application relates to the field of geotechnical engineering, in particular to an assembled rockfall emergency blocking structure. BACKGROUND

[0002] High steep slopes along mountainous highways often face rockfall impact disasters, which can cause great potential risks to highway facilities and passing vehicles and pedestrians. Especially for broken rock mass structures with high surface weathering degree, they are more prone to collapse under the influence of environmental factors such as earthquakes and construction vibrations. Due to the long mileage of mountainous highways and the large number of high steep slopes along the line, it is difficult to implement large-scale slope reinforcement and control projects due to construction conditions and economic costs. For slopes that are in a stable state but have frequent rockfalls, passive blocking measures are often used. However, the existing blocking measures are conventional engineering methods that require large-scale mechanical equipment to excavate foundation pits, cast-in-place concrete foundations and railings, and install rock blocking nets after the maintenance period. The entire construction process is complex, labor-intensive and time-consuming, making it difficult to quickly respond to frequent rockfall disasters.

[0003] Therefore, the present application is proposed. SUMMARY

[0004] The technical problem solved by the present application is that the existing blocking construction method is complex, 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 application realizes the following technical scheme:

[0006] The present application provides an assembled 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 in a foundation pit excavated in advance; the prefabricated micro pile comprises a first connecting section, and the first connecting section is located at the upper part of the prefabricated micro pile; the prefabricated blocking column comprises a second connecting section, and the second connecting section is located at the lower part 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 net is connected between two adjacent prefabricated blocking columns, and the prefabricated blocking net and the prefabricated blocking column are detachable.

[0007] Further, the first connecting section is a cavity with an open top; the first connecting section comprises a first connecting part and a second connecting part; the first connecting part is located at the upper part of the first connecting section, and the second connecting part is located at the lower part of the first connecting section; the first connecting part and the second connecting part are integrally formed; the first connecting part is a columnar structure with multiple edges; the second connecting part has a first engaging tooth and a second engaging tooth; the first engaging tooth is one or more, and the second engaging tooth is one or more; the tooth tip of the first engaging tooth is oriented in the opposite direction of the tooth tip of the second engaging tooth; the first connecting part comprises two oppositely arranged first locking through holes; the second connecting section is a solid column; the second connecting section comprises a third connecting part and a fourth connecting part; the third connecting part is located at the upper part of the second connecting section, and the fourth connecting part is located at the lower part of the second connecting section; the third connecting part and the fourth connecting part are integrally formed; the third connecting part has the same first physical characteristics as the first connecting part, and the first physical characteristics include shape and size; the third connecting part comprises a second locking through hole and a bolt; 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 bolt; the diameter of the first locking through hole, the diameter of the second locking through hole, and the diameter of the bolt are ≥ 3 cm; the fourth connecting part comprises a third engaging tooth and a fourth engaging tooth; the third engaging tooth has the same second physical characteristics as the first engaging tooth, and the fourth engaging tooth has the same second physical characteristics as the second engaging tooth; the second physical characteristics include shape, size, number, position, and tooth tip orientation.

[0008] Further, the first connecting section comprises a U-shaped ring buckle and multiple insertion ribs; along the length direction of the lower part of the prefabricated micro pile, the two legs of the U-shaped ring buckle are fixedly inserted into the top end of the lower part of the prefabricated micro pile, and one end of the insertion rib is fixedly inserted into the top end of the lower part of the prefabricated micro pile; the second connecting section comprises a first insertion hole, multiple second insertion holes, a through insertion hole, and a through insertion steel bar; the first insertion hole and the multiple second insertion holes are located inside the second connecting section; the length direction of the through insertion hole is perpendicular to the length direction of the second connecting section; the distance from the through insertion hole to the bottom end of the second connecting section = the distance from the bending part 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 insertion hole, the multiple insertion ribs are one-to-one correspondingly inserted into the multiple second insertion holes, and the through insertion steel bar penetrates through the through insertion hole and the bending part of the U-shaped ring buckle.

[0009] Further, the length direction of the first insertion hole is the same as the length direction of the U-shaped ring buckle, the length of the first insertion hole is greater than the length of the U-shaped ring buckle, and the width of the first insertion hole is greater than the width of the U-shaped ring buckle; the length direction of the second insertion hole is the same as the length direction of the insert bar, the length of the second insertion hole is greater than the length of the insert bar, and the second insertion hole corresponds to the insert bar one by one; the bending part of the U-shaped ring buckle is semicircular; the diameter of the insertion hole is equal to the diameter of the semicircular shape, which is equal to the diameter of the inserted steel bar; the diameter of the insertion hole, the diameter of the bending part of the U-shaped ring buckle, or the diameter of the inserted steel bar is greater than 3 cm; the diameter of the steel bar used to prepare the U-shaped ring buckle and the diameter of the insert bar are both greater than or equal to 1 cm; the diameter of the insert bar is equal to the diameter of the second insertion hole, and the diameter of the insert bar or the diameter of the second insertion hole is greater than or equal to 1 cm; the length of the insert bar or the length of the second insertion hole is greater than or equal to 30 cm.

[0010] Further, the prefabricated blocking net is a net structure, and the prefabricated blocking net comprises 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; the upper part of the prefabricated blocking column is fixedly connected with a plurality of second buckling mechanisms; the first buckling mechanism is matched with the second buckling mechanism, and the first buckling mechanism corresponds to the second buckling mechanism one by one.

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

[0012] Further, the steel strand fixing mechanism comprises a plurality of steel strand insertion through holes and a plurality of steel strand tail fixing stakes; the length direction of the steel strand insertion through hole is perpendicular to the length direction of the upper part of the prefabricated blocking column; the steel strand insertion through hole penetrates the upper part of the prefabricated blocking column along the length direction of the steel strand insertion through hole; on the cross section of the upper part of the prefabricated blocking column, a plurality of steel strand insertion through holes intersect at the center of the cross section, and a plurality of steel strand insertion through holes are uniformly distributed; the steel strand tail fixing stake is fixedly connected to the surface of the prefabricated blocking column, the steel strand tail fixing stake is close to the end of the steel strand insertion through hole, and one steel strand insertion through hole corresponds to two steel strand tail fixing stakes.

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

[0014] Further, the spacing between the two adjacent precast barrier columns (3) is ≤ 10 m.

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

[0016] 1. The barrier net, the barrier column and the barrier pile are all prefabricated; the barrier pile is installed by directly burying in the foundation pit on site, and the barrier net and the barrier column and the barrier column and the barrier pile are all connected in an assembled manner and can be disassembled, which has the advantages of convenient and fast installation and disassembly and recyclable use compared with the traditional concrete retaining wall.

[0017] 2. Two assembly methods between the barrier pile and the barrier column are provided: in the first assembly method, the first connecting section is a cavity with an open top, and the second connecting section is a solid column, both of which are connected in a nested manner, and the first connecting section and the second connecting section have a matching multi-prism structure and a meshing tooth structure, which further realizes the meshing of the first connecting section and the second connecting section on the basis of the nested connection method, enhances the stability of the connection between the barrier pile and the barrier column, and further enhances the overall strength of the dangerous rock emergency danger reduction barrier; in the second method, the first connecting section and the second connecting section are anchored by a plurality of inserted steel bars and U-shaped ring buckles, and additionally a steel bar matching the size of the U-shaped ring buckle is inserted to increase the stability of the anchoring, and further enhance the overall strength of the dangerous rock emergency danger reduction barrier.

[0018] 3. Two assembly methods between the barrier net and the barrier column are provided: in the first assembly method, the barrier net and the barrier column are connected in a buckling manner, and in the second assembly method, the barrier net and the barrier column are connected in an anchoring manner, both of which can realize quick assembly and disassembly, and the buckling and anchoring can ensure the connection strength between the barrier net and the barrier column, and further ensure the overall strength of the dangerous rock emergency danger reduction barrier.

[0019] 4. Any one of the assembly methods between the barrier pile and the barrier column can be combined with any one of the assembly methods between the barrier column and the barrier net. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to make the technical solutions of the exemplary embodiments of the present application clearer, the drawings needed in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be considered as limiting the scope. Other related drawings can also be obtained by those of ordinary skill in the art without creative effort based on these drawings.

[0021] Figure 1 A schematic diagram of the overall structure of an assembled rockfall emergency blocking structure according to Embodiment 1 of the present application;

[0022] Figure 2 A schematic diagram of the structure of a prefabricated micro pile in a nested and engaged manner according to Embodiment 1 of the present application;

[0023] Figure 3 A schematic diagram of the structure of a prefabricated blocking column in a nested and engaged manner according to Embodiment 1 of the present application;

[0024] Figure 4 A schematic diagram of the connection relationship between a prefabricated micro pile and a prefabricated blocking column in a nested and engaged manner according to Embodiment 1 of the present application;

[0025] Figure 5 A schematic diagram of the connection relationship between a prefabricated blocking net and a prefabricated blocking column in a buckling manner according to Embodiment 1 of the present application;

[0026] Figure 6 A schematic diagram of the structure of a prefabricated micro pile in an anchoring manner according to Embodiment 2 of the present application;

[0027] Figure 7 A schematic diagram of the cross-sectional top view of a prefabricated blocking column in an anchoring manner according to Embodiment 2 of the present application;

[0028] Figure 8 A schematic diagram of the structure of a prefabricated blocking column in an anchoring manner according to Embodiment 3 of the present application;

[0029] Figure 9 A schematic diagram of the connection relationship between a prefabricated blocking net and a prefabricated blocking column in an anchoring manner according to Embodiment 3 of the present application.

[0030] Markings in the drawings and corresponding component names:

[0031] 1-precast barrier net, 2-precast micropile, 3-precast barrier 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 rib, 311-third connecting part, 312-fourth connecting part, 313-first insertion hole, 314-second insertion hole, 315-insertion through hole, 316-inserted steel bar, 317-second buckling mechanism, 318-steel strand insertion through hole, 319-steel strand tail fixing pile, 2121-first engaging tooth, 2122-second engaging tooth, 3121-third engaging tooth, 3122-fourth engaging tooth. DETAILED DESCRIPTION

[0032] In order to make the objects, technical solutions and advantages of the present application clearer, further detailed description will be made to the present application in combination with embodiments and drawings, the illustrative embodiments of the present application and the description thereof are only used to explain the present application, and not as a limitation to the present application.

[0033] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one ordinarily skilled in the art that the present application can be practiced without these specific details. In other instances, well-known structures, circuits, materials or processes have not been described in detail in order to avoid obscuring the present application.

[0034] Throughout this specification, the recitation "one embodiment," "an embodiment," "one example," or "an example" means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one embodiment of the application. Thus, the appearances of the phrase "one embodiment," "an embodiment," "one example," or "an example" in various places throughout the specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics can be combined in any suitable manner in one or more embodiments or examples. In addition, the skilled person in the art will understand that the drawings provided herein are for illustrative purposes only and 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 application, the terms "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation to the scope of protection of the present application.

[0036] Embodiment 1: The assembled rockfall emergency blocking structure provided in this embodiment is composed of a plurality of prefabricated blocking nets, a plurality of prefabricated micro piles and a plurality of prefabricated blocking columns. In order to more clearly illustrate the structural characteristics of the dangerous rock emergency danger reduction blocking, this embodiment only takes one blocking unit as an example for illustration, which is composed of only one prefabricated blocking net, two prefabricated micro piles and two prefabricated blocking columns. As shown in Figure 1 The prefabricated micro pile 2 is embedded in the pre-excavated foundation pit, and the prefabricated micro pile 2 has a one-to-one correspondence with the foundation pit, that is, one prefabricated micro pile 2 is embedded in one foundation pit. In order to ensure the stability and strength of the blocking whole, the embedding depth of the prefabricated micro pile 2 should be ≥2m. In addition, the prefabricated micro pile 2 also has a one-to-one correspondence with the prefabricated blocking column 3, that is, one prefabricated micro pile 2 is connected with one prefabricated blocking column 3. In terms of connection, the upper part of the prefabricated micro pile 2 is connected with the lower part of the prefabricated blocking column 3. Specifically, as shown in Figure 2 The upper part of the prefabricated micro pile 2 has a first connecting section 21, and the lower part of the prefabricated blocking column 3 has a second connecting section 31. The first connecting section 21 is connected with 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 column 3 are also detachable.

[0037] It should be noted that in order to enhance the overall strength of the dangerous rock emergency danger reduction blocking, the outer diameter of the prefabricated micro pile should be ≥20cm, and the outer diameter of the prefabricated blocking column 3 should be ≥20cm.

[0038] In order to specifically illustrate the connection mode between the first connecting section 21 and the second connecting section 31 and the connection mode between the prefabricated blocking column 3 and the prefabricated blocking net 1, this embodiment will combine Figures 2 to 5 the structure of the first connecting section 21 of the prefabricated micro pile 2, the structure of the second connecting section 31 of the prefabricated blocking column 3 and the structure of the prefabricated blocking net 1 are described in detail as follows:

[0039] The first connecting section 21 of the prefabricated micro pile 2 is a cavity with an open top, as shown in Figure 2 The first connecting section 21 of the prefabricated micro pile 2 is a cavity with an open top, as shown in Figure 2 The first connecting section 211 is a quadrangular prism structure, as shown in Figure 2The second connecting part 212 shown has 4 first meshing teeth 2121 with downward pointing tooth tips and 1 second meshing tooth 2122 with upward pointing tooth tip. Figure 2 The 4 first meshing teeth 2121 shown are located at the periphery and the second meshing tooth 2122 is located in the middle of the 4 first meshing teeth 2121. In addition, as shown in Figure 2 The upper part of the first connecting part 211 shown also has two oppositely arranged first locking through holes.

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

[0041] The fourth connecting part 312 is also a toothed structure with third meshing teeth 3121 and fourth meshing teeth 3122, and the third meshing teeth 3121 are the same as the first meshing teeth 2121 described above in shape, size, number, position and tooth tip direction, and the fourth meshing teeth 3122 are the same as the second meshing teeth 2122 described above in shape, size, number, position and tooth tip direction.

[0042] It should be noted that: first, based on the prefabricated micro pile 2 with the cavity structure and the prefabricated blocking column 3 with the solid column structure, the first connecting section 21 and the second connecting section 31 are connected in a nested manner as a whole, as shown in Figure 4 The second connecting section 31 is nested inside the first connecting section 21; second, the first connecting part 211 and the second connecting part 212 adopt a columnar structure with multiple edges that are the same in shape and size, which aims to avoid relative displacement in the circumferential direction between the first connecting section 21 and the second connecting section 31 after nested connection under external force, thereby enhancing the stability between the first connecting section 21 and the second connecting section 31; third, the shapes of the first connecting part 211 and the second connecting part 212 are the same Figure 2 and Figure 3The four-prism structure shown can also be a three-prism structure, a five-prism structure, a six-prism structure, etc., but the number of edges of the first connecting part 211 and the second connecting part 212 should not be too many, that is, the first connecting part 211 and the second connecting part 212 as a whole should not be approximately cylindrical structure, which leads to not achieving 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 part 211 and the second connecting part 212 can also be a columnar structure with a star-shaped cross section, for example, the first connecting part 211 and the second connecting part 212 adopt a columnar structure with a five-pointed star-shaped cross section, but the number of edges of the first connecting part 211 and the second connecting part 212 should not be too many, which leads to the situation that it is not convenient to quickly connect the first connecting segment 21 and the second connecting segment 31; fifth, the second connecting part 212 is provided with a first engaging tooth 2121 and a second engaging tooth 2122, and the fourth connecting part 312 is provided with a third engaging tooth 3121 and a fourth engaging tooth 3122 matched with the second connecting part 212, the purpose is to further enhance the stability between the first connecting segment 21 and the second connecting segment 31 on the basis of nested connection; sixth, the number of first engaging teeth 2121 can be one or more, and the number of second engaging teeth 2122 can also be one or more, but the number of engaging teeth should not be too many, which leads to the situation that it is not convenient to quickly connect the first connecting segment 21 and the second connecting segment 31. Seventh, in order to avoid the outer wall of the first connecting segment 21 cracking under external impact and the second connecting segment 31 breaking under external force impact, therefore, the diameter of the first connecting segment 21 or the diameter of the second connecting segment 31 should be controlled within 10cm-15cm; eighth, in order to improve the blocking effect, the distance between two adjacent prefabricated blocking columns 3 should be ≤10m.

[0043] As Figure 5 shown, the prefabricated blocking net 1 is a net structure formed by interweaving a plurality of transverse steel wires and a plurality of longitudinal steel wires. Further, the two ends of each transverse steel wire are fixedly connected with a first buckling mechanism 11; correspondingly, the upper part of the prefabricated blocking column 3 is fixedly connected with a plurality of second buckling mechanisms 317 corresponding to the first buckling mechanism 11, and the first buckling mechanism 11 and the second buckling mechanism 317 are matched.

[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 ring. The prefabricated blocking net 1 and the prefabricated blocking column 3 are connected to each other by buckling, which can achieve quick assembly and disassembly, and the hooking method can also ensure the connection strength between the two. In addition, the position between the hook and the ring can be called; second, the first buckling mechanism 11 and the second buckling mechanism 317 can also use other product components with the same technical effect; third, in order to increase the blocking effect of the prefabricated blocking net 1 on the falling rocks, the spacing between the two adjacent transverse steel strands should be ≤30cm, and the spacing between the two adjacent longitudinal steel strands should be ≤30cm; fourth, the density of the transverse steel strands or the density of the longitudinal steel strands is preferably ≥7.83g / cm3.

[0045] In summary, the blocking net, the blocking column and the blocking pile of the assembled falling rock emergency blocking structure provided by the embodiment are all prefabricated parts. The blocking pile is installed by directly burying it in the foundation pit on site. The blocking net and the blocking column are assembled by buckling. The micro pile and the blocking column are assembled by nesting and engaging. The disassembly is convenient and quick, which can meet the overall stability and strength of the emergency danger reduction and blocking, and the blocking net, the blocking column and the blocking pile can be recycled.

[0046] Embodiment 2: The difference between the assembled falling rock emergency blocking structure provided by the embodiment and the assembled falling rock emergency blocking structure provided by the embodiment 1 is that: 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. In order to simplify the description, this embodiment only combines Figure 6 and Figure 7 The remaining structural features of the dangerous rock emergency danger reduction and blocking are referred to the embodiment 1.

[0047] Difference point 1: the structure of the first connecting section of the prefabricated micro pile

[0048] As Figure 6 shown, the first connecting section 21 of the prefabricated micro pile 2 includes a U-shaped ring buckle 213 and a plurality of inserted ribs 214. Along the length direction of the lower part of the prefabricated micro pile 2, the two legs of the U-shaped ring buckle 213 and one end of the inserted rib 214 are fixedly inserted into the top end of the lower part of the prefabricated micro pile 2, and the plurality of inserted ribs 214 are annularly distributed around the U-shaped ring buckle 213.

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

[0050] Difference point 2: the structure of the second connecting section 31 of the prefabricated blocking column 3

[0051] AsFigure 6 and Figure 7 As shown in the figure, the second connecting section 31 of the prefabricated retaining column 3 comprises a first insertion hole 313, a plurality of second insertion holes 314, a through hole 315 and a through steel bar 316. Among them, the first insertion hole 313 and the plurality of second insertion holes 314 are located inside the second connecting section 31, and the length direction of the first insertion hole 313 is the same as that of the U-shaped ring buckle 213, so that the U-shaped ring buckle 213 can be quickly inserted into the first insertion hole 313 during installation; in addition, the length of the first insertion hole 313 should be ≥ the length of the U-shaped ring buckle 213, and the width of the first insertion hole 313 should be ≥ the width of the U-shaped ring buckle 213, so that the U-shaped ring buckle 213 can be completely inserted into the first insertion hole 313. Similarly, the length direction of the second insertion hole 314 is the same as that of the inserted rib 214, and the position of the second insertion hole 314 corresponds to that of the inserted rib 214 one by one, so that the inserted rib 214 can be quickly inserted into the second insertion hole 314 during installation; in addition, the length of the second insertion hole 314 should be ≥ the length of the inserted rib 214, so that the inserted rib 214 can be completely inserted into the second insertion hole 314 during installation; the diameter of the inserted rib 214 = the diameter of the second insertion hole 314, which ensures the connection stability of the first connecting section 21 and the second connecting section 31.

[0052] In order to ensure that the through steel bar 316 can be tightly combined with the through hole 315 and the U-shaped ring buckle 213 after penetrating them, and improve the connection stability of the first connecting section 21 and the second connecting section 31, in the embodiment, the length direction of the through hole 315 is perpendicular to the length direction of the second connecting section 31, the distance from the through hole 315 to the bottom end of the second connecting section 31 = the distance from the bending part of the U-shaped ring buckle 213 to the bottom end of the first connecting section 21, and the bending part of the U-shaped ring buckle 213 is semicircular, the diameter of the through hole 315 = the diameter of the semicircle = the diameter of the through steel bar 316.

[0053] It should be noted that in order to ensure the overall strength of the dangerous rock emergency danger reduction barrier, the diameter of the through hole 315, the diameter of the bending part of the U-shaped ring buckle 213 or the diameter of the through 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 rib 214 or the diameter of the second insertion hole 314 should be ≥1cm, and the length of the inserted rib 214 or the length of the second insertion hole 314 should be ≥30cm.

[0054] Difference point 3: connection mode between the first connecting section and the second connecting section

[0055] During connection, the U-shaped ring buckle 213 is inserted into the first insertion hole 313, a plurality of inserted ribs 214 are inserted into a plurality of second insertion holes 314 one by one, and the through steel bar 316 penetrates the through hole 315 and the bending part of the U-shaped ring buckle 213.

[0056] In summary, the assembled rockfall emergency blocking structure provided in the embodiment has the advantages that the blocking net, the blocking column and the blocking pile are all prefabricated, the blocking pile is installed by directly burying in the foundation pit on site, the blocking net and the blocking column are assembled by buckling, the micro pile and the blocking column are assembled by anchoring, the assembled rockfall emergency blocking structure is convenient and fast to disassemble, and the overall stability and strength of the emergency danger reduction and blocking can be met, and the blocking net, the blocking column and the blocking pile can be recycled.

[0057] Embodiment 3: The assembled rockfall emergency blocking structure provided in the embodiment is different from the assembled rockfall emergency blocking structure provided in the above-mentioned embodiment 1 in that: first, the structure of the prefabricated blocking column; second, the structure of the prefabricated blocking net; third, the connection mode between the prefabricated blocking net and the prefabricated blocking column. For the sake of simplifying the description, the embodiment will only be combined with the above-mentioned embodiment 1 for description. Figure 8 and Figure 9 The above-mentioned three difference points will be described in detail, and the remaining structural features of the dangerous rock emergency danger reduction and blocking are referred to the embodiment 1.

[0058] Difference point 1: the structure of the prefabricated blocking column

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

[0060] Continuing to refer to Figure 9 , the steel strand fixing mechanism includes a plurality of steel strand insertion through holes 318 and a plurality of steel strand tail fixing piles 319, and the length direction of the steel strand insertion through hole 318 is perpendicular to the length direction of the upper part of the prefabricated blocking column 3. Along the length direction of the steel strand insertion through hole 318, the steel strand insertion through hole 318 penetrates the upper part of the prefabricated blocking column 3; on the cross section of the upper part of the prefabricated blocking column 3, the plurality of steel strand insertion through holes 318 intersect at the center of the cross section and are uniformly distributed on the cross section. Further, the steel strand tail fixing pile 319 is fixedly connected to the surface of the prefabricated blocking column 3, the steel strand tail fixing pile 319 is close to the end of the steel strand insertion through hole 318, and one steel strand insertion through hole 318 corresponds to two steel strand tail fixing piles 319.

[0061] Difference point 2: the structure of the prefabricated blocking net

[0062] The difference between the prefabricated blocking net 1 of the embodiment and the prefabricated blocking net 1 provided in the embodiment 1 is that the prefabricated blocking net 1 of the embodiment does not have the first buckling mechanism 11. Correspondingly, the prefabricated blocking column 3 also does not have the second buckling mechanism 317.

[0063] Difference point 3: the connection mode between the prefabricated blocking net and the prefabricated blocking column

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

[0065] It should be noted that: first, the blocking net, the blocking column and the blocking stake of the assembled rockfall emergency blocking structure provided by the embodiment are also prefabricated, and the blocking stake is also installed by directly burying in the foundation pit on site, the blocking net and the blocking column are assembled by anchoring, the micro pile and the blocking column are assembled by nesting and meshing, and the same advantages of convenient and fast disassembly can be achieved, the overall stability and strength of the emergency danger reduction blocking can be met, and the blocking net, the blocking column and the blocking stake can be recycled; second, the steel strand fixing mechanism comprises a plurality of steel strand insertion holes 318 uniformly distributed in the cross section, and each end of each steel strand insertion hole 318 corresponds to a steel strand tail fixing stake 319, which is convenient for anchoring the prefabricated blocking column 3 and the prefabricated blocking net 1; specifically, assuming that the steel strand fixing mechanism only comprises one steel strand insertion hole 318 and only one steel strand tail fixing stake 319 is arranged at one end of the steel strand insertion hole 318, when the prefabricated blocking column 3 is connected with the prefabricated micro pile 2, it cannot be guaranteed that one end of the steel strand insertion hole 318 is open in the extension direction of the transverse steel strand, and it cannot be guaranteed that the other end of the transverse steel strand after passing through the steel strand insertion hole 318 has a steel strand tail fixing stake 319 for fixing, that is, it is not convenient for the prefabricated blocking column 3 and the prefabricated blocking net 1 to be anchored.

[0066] Embodiment 4: The assembled rockfall emergency blocking structure provided by the embodiment adopts the structure of the first connecting section, the structure of the second connecting section and the connecting mode 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 connecting mode between the prefabricated blocking net and the prefabricated blocking column described in embodiment 3. That is, the embodiment combines the anchoring connection mode between the prefabricated micro pile and the prefabricated blocking column with the anchoring connection mode between the prefabricated blocking column and the prefabricated blocking net, and the same technical effects of quick disassembly and recycling can be achieved.

[0067] The specific embodiments described above further illustrate the purposes, technical solutions and advantages of the present application, and it should be understood that the above description is only a specific embodiment of the present application and is not used to limit the protection scope of the present application, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A prefabricated rockfall emergency barrier structure, characterized in that, The system includes multiple prefabricated retaining nets (1), multiple prefabricated micropiles (2), and multiple prefabricated retaining columns (3); the prefabricated micropiles (2) are embedded in a pre-excavated pit; each prefabricated micropile (2) includes a first connecting section (21) located at the upper part of the prefabricated micropiles (2); each prefabricated retaining column (3) includes a second connecting section (31) located at the lower part of the prefabricated retaining column (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; each prefabricated retaining net (1) is connected between two adjacent prefabricated retaining columns (3), and the prefabricated retaining net (1) is detachable from the prefabricated retaining column (3).

2. The prefabricated rockfall emergency barrier structure according to claim 1, characterized in that, The first connecting segment (21) is a cavity with an open top; the first connecting segment (21) includes a first connecting part (211) and a second connecting part (212); the first connecting part (211) is located at the upper part of the first connecting segment (21), and the second connecting part (212) is located at the lower part of the first connecting segment (21), and the first connecting part (211) and the second connecting part (212) are integrally formed; the first connecting part (211) is a columnar structure with multiple ridges; the second connecting part (212) has a first meshing tooth (2121) and a second meshing tooth (2122); there are one or more first meshing teeth (2121) and one or more second meshing teeth (2122), and the tooth tip of the first meshing tooth (2121) faces opposite to the tooth tip of the second meshing tooth (2122); the first connecting part (211) includes two oppositely arranged first locking through holes; The second connecting segment (31) is a solid column; the second connecting segment (31) includes a third connecting part (311) and a fourth connecting part (312); the third connecting part (311) is located at the upper part of the second connecting segment (31), and the fourth connecting part (312) is located at the lower part of the second connecting segment (31), the third connecting part (311) and the fourth connecting part (312) are integrally formed; the third connecting part (311) has the same first physical feature as the first connecting part (211), the first physical feature including shape and size; the third connecting part (311) includes a second locking through hole and The pin has a second locking through hole whose position corresponds to the first locking through hole. The diameter of the first locking through hole is equal to the diameter of the second locking through hole, which is equal to the diameter of the pin. The diameters of the first locking through hole, the second locking through hole, and the pin are all ≥ 3 cm. The fourth connecting part (312) includes a third meshing tooth (3121) and a fourth meshing tooth (3122). The third meshing tooth (3121) has the same second physical feature as the first meshing tooth (2121), and the fourth meshing tooth (3122) has the same second physical feature as the second meshing tooth (2122). The second physical characteristic includes shape, size, number, position, and tooth tip orientation.

3. The prefabricated rockfall emergency barrier structure according to claim 1, characterized in that, The first connecting section (21) includes a U-shaped ring (213) and multiple reinforcing bars (214); along the length direction of the lower part of the precast micro pile (2), two legs of the U-shaped ring (213) are fixedly inserted into the top of the lower part of the precast micro pile (2), and one end of the reinforcing bar (214) is fixedly inserted into the top of the lower part of the precast micro pile (2); The second connecting segment (31) includes a first insertion hole (313), a plurality of second insertion holes (314), a through hole (315), and a through reinforcing bar (316); the first insertion hole (313) and the plurality of second insertion holes (314) are all located inside the second connecting segment (31); the length direction of the through hole (315) is perpendicular to the length direction of the second connecting segment (31), and the distance from the through hole (315) to the bottom end of the second connecting segment (31) is equal to the distance from the bent part of the U-shaped buckle (213) to the bottom end of the first connecting segment (21); in the connected state, the U-shaped buckle (213) is inserted into the first insertion hole (313), the plurality of reinforcing bars (214) are inserted into the plurality of second insertion holes (314) one by one, and the through reinforcing bar (316) passes through the through hole (315) and the bent part of the U-shaped buckle (213).

4. The prefabricated rockfall emergency barrier structure according to claim 3, characterized in that, The length direction of the first insertion hole (313) is the same as the length direction of the U-shaped buckle (213), the length of the first insertion hole (313) is greater than or equal to the length of the U-shaped buckle (213), and the width of the first insertion hole (313) is greater than or equal to the width of the U-shaped buckle (213). The length direction of the second insertion hole (314) is the same as the length direction of the insertion rod (214), the length of the second insertion hole (314) is greater than or equal to the length of the insertion rod (214), and the second insertion hole (314) corresponds one-to-one with the insertion rod (214); The bent portion of the U-shaped ring (213) is semi-circular; the diameter of the through hole (315) is equal to the diameter of the semi-circular portion, which is equal to the diameter of the through reinforcing bar (316); the diameter of the through hole (315), the diameter of the bent portion of the U-shaped ring (213), or the diameter of the through reinforcing bar (316) is ≥3cm; the diameter of the reinforcing bar used to prepare the U-shaped ring (213) is ≥1cm; the diameter of the insert (214) is equal to the diameter of the second insertion hole (314), and the diameter of the insert (214) or the diameter of the second insertion hole (314) is ≥1cm; the length of the insert (214) or the length of the second insertion hole (314) is ≥30cm.

5. A prefabricated rockfall emergency barrier structure according to any one of claims 1-4, characterized in that, The prefabricated barrier net (1) is a mesh structure, and the prefabricated barrier net (1) includes multiple transverse steel strands and multiple longitudinal steel strands; each of the transverse steel strands is fixedly connected to a first fastening mechanism (11) at both ends; the upper part of the prefabricated barrier post (3) is fixedly connected to multiple second fastening mechanisms (317); the first fastening mechanism (11) matches the second fastening mechanism (317), and the first fastening mechanism (11) and the second fastening mechanism (317) correspond one-to-one.

6. A prefabricated rockfall emergency barrier 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 strands or the density of the longitudinal steel strands is ≥7.83g / cm³. 3 .

7. A prefabricated rockfall emergency barrier structure according to any one of claims 1-4, characterized in that, The prefabricated barrier net (1) is a mesh structure, and the prefabricated barrier net (1) includes multiple transverse steel strands and multiple longitudinal steel strands; the upper part of the prefabricated barrier post (3) includes multiple steel strand fixing mechanisms; along the length direction of the upper part of the prefabricated barrier post (3), multiple steel strand fixing mechanisms are spaced apart, and the spacing between two adjacent steel strand fixing mechanisms is equal to the spacing 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. A prefabricated rockfall emergency barrier structure according to claim 7, characterized in that, The steel strand fixing mechanism includes multiple steel strand insertion through holes (318) and multiple steel strand tail fixing piles (319); the length direction of the steel strand insertion through holes (318) is perpendicular to the length direction of the upper part of the precast retaining column (3); along the length direction of the steel strand insertion through holes (318), the steel strand insertion through holes (318) penetrate the upper part of the precast retaining column (3); on the cross-section of the upper part of the precast retaining column (3), the multiple steel strand insertion through holes (318) intersect at the center of the cross-section, and the multiple steel strand insertion through holes (318) are evenly distributed; the steel strand tail fixing piles (319) are fixedly connected to the surface of the precast retaining column (3), and the steel strand tail fixing piles (319) are close to the end of the steel strand insertion through holes (318), and one steel strand insertion through hole (318) corresponds to two steel strand tail fixing piles (319).

9. A prefabricated 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 strands or the density of the longitudinal steel strands is ≥7.83g / cm³. 3 .

10. A prefabricated rockfall emergency barrier structure according to any one of claims 1-4, characterized in that, The distance between two adjacent prefabricated retaining posts (3) is ≤10m.

Images