An anti-rockfall impact shed tunnel structure and its anchoring assembly

Abstract

The present invention discloses a rockfall impact resistant shed tunnel structure and its anchoring assembly, comprising: a support extension mechanism; the support extension mechanism comprises a frame formed by splicing a plurality of steel components; a top protection mechanism; one end of the top protection mechanism is hinged to one end of the frame located on the road side; the other end of the top protection mechanism is connected to the other end of the frame via a roof angle adjustment mechanism; the roof angle adjustment mechanism; the two ends of the roof angle adjustment mechanism are respectively hinged to the top protection mechanism and the other end of the frame, and are used to drive the other end of the top protection mechanism to rotate around one end of the roof angle adjustment mechanism; an anchoring support mechanism; the anchoring support mechanism comprises a frame arranged on the support extension mechanism, the frame being connected to an anchoring assembly, and the anchoring assembly being anchored to the slope. By adopting this solution, the rockfall impact resistant shed tunnel structure can be installed on a section of a small non-standard road with the risk of rockfall and landslide, which can effectively reduce or avoid the damage caused by flying rocks or landslides on the small non-standard road.

Description

Technical Field

[0001] The present invention relates to the field of road safety protection, and in particular to a rockfall impact resistant shed tunnel structure and an anchoring assembly thereof. Background Art

[0002] A shed tunnel is a shed-like tunnel, which is generally built on sections of road where falling rocks are frequent or landslides are possible to protect the safety of vehicles or pedestrians. Sections of road where shed tunnels are set up are often at risk and prone to flying rocks and landslides. During construction, it is difficult to excavate in place and form an overall construction site at one time, or the softness and hardness of the foundations at the bottom of the inner and outer walls are quite different, making it unsuitable for the construction of open tunnels. It is also often used in sections where the bedrock is deep and conditions allow for pile foundation construction, especially in sections where the geology is expansive clay and highly expansive differentiated rock. Since the soil contains hard sandstone blocks of varying sizes and there is abundant fissure water in the soil, large-scale excavation of the roadbed can easily cause landslides and mudslides. Large-scale excavation is extremely difficult and has great construction risks. If open tunnel construction is used, it is difficult to implement, with high costs and long construction periods. It is necessary to use shed tunnels to shorten the construction period and reduce the project cost.

[0003] At present, tunnels are mostly set up on large standard road sections. In addition to large standard highways, in mountainous areas, hills, plateaus and even canyon areas, a large number of small non-standard roads such as mountain roads and footpaths have been naturally formed or built to meet the transportation needs of local residents. In the process of natural formation or construction and maintenance of small roads, it is often necessary to cut mountains and create slopes, dig trenches and fill them high. Therefore, there are also a large number of slopes or sections with the danger of falling rocks and landslides. Moreover, since there are more pedestrians walking or riding non-motorized vehicles on small roads, there is a greater risk of casualties. Therefore, corresponding protective facilities are also needed. The traffic conditions in areas where small non-standard roads are located are often inconvenient, construction materials are difficult to transport, and large construction machinery is difficult to enter and deploy. The construction of relatively standard concrete structure tunnels is difficult, the cost is high and the construction period is long. Therefore, steel structure tunnels with good construction simplicity and scalability have become a better choice for protective facilities for small non-standard roads in special terrains. Summary of the Invention

[0004] The present invention aims to solve the deficiencies of the prior art and to provide a rockfall-resistant shed tunnel structure and its anchoring assembly. By adopting this solution, the rockfall-resistant shed tunnel structure can be installed on sections of small non-standard roads with risks of rockfall and landslides. Due to the use of steel structures, construction is relatively convenient, with a short construction period and low cost. It can effectively reduce or avoid the hazards caused by flying rocks or collapses on small non-standard roads, ensure the safe passage of residents, and protect people's lives and property.

[0005] The present invention is achieved through the following technical solutions:

[0006] A rockfall impact resistant shed-tunnel structure comprising:

[0007] Support and expansion mechanism; the support and expansion mechanism includes a frame formed by splicing a plurality of steel components;

[0008] A top protection mechanism; one end of the top protection mechanism is hinged to one end of the frame located on the road side; the other end of the top protection mechanism is connected to the other end of the frame through a roof angle adjustment mechanism;

[0009] A roof angle adjustment mechanism; the two ends of the roof angle adjustment mechanism are respectively hinged to the top protection mechanism and the other end of the frame, and are used to drive the other end of the top protection mechanism to rotate around one end of itself;

[0010] Anchoring support mechanism; the anchoring support mechanism includes a frame arranged on the support extension mechanism, the frame is connected to an anchoring assembly, and the anchoring assembly is anchored to the slope.

[0011] Compared with the existing technology, since there are more pedestrians walking or riding non-motorized vehicles on small roads, there is a greater risk of casualties, so corresponding protective facilities are also needed. The traffic conditions in the areas where small non-standard roads are located are often inconvenient, construction materials are difficult to transport, and large construction machinery is difficult to enter and deploy. The construction of a relatively standard concrete structure shed is difficult, the cost is high, and the construction period is long. The present invention provides a rockfall impact shed structure. By adopting this solution, the rockfall impact shed structure can be set on a section of a small non-standard road with the risk of rockfall and landslides. Due to the use of steel structure, the construction is more convenient, the construction period is short, and the cost is low. It can effectively reduce or avoid the hazards caused by flying rocks or collapses on small non-standard roads, ensure the safe passage of residents, and protect people's lives and property.

[0012] The specific plan includes a support and expansion mechanism, a top protection mechanism, a roof angle adjustment mechanism and an anchor support mechanism. When in use, the slope foot of the mountain outside the roadside or highland is appropriately excavated to straighten the road section to be constructed as much as possible. If it is really difficult to straighten it, the shape of the top protection plate should be appropriately changed to make the top of the entire shed hole flush and roughly spliced; then, according to the actual situation, a number of pile foundations are set with a certain density or distance pattern, and a number of steel components are spliced together to form a support and expansion mechanism, which is mostly constructed with H-shaped steel with strong tensile, compressive and bending resistance in all directions, which can effectively reduce With low construction difficulty and cost, it can be buried in the corresponding pile foundation, thus realizing the possibility of building a shed tunnel structure on a small non-standard road; then the top protection mechanism and the roof angle adjustment mechanism are installed, among which the roof angle adjustment mechanism can effectively block the falling rocks or collapsed earth and rocks according to the actual support conditions on site, ensuring the smooth flow of roads and the safety of pedestrians, and finally the entire support extension mechanism is anchored and supported by the anchor support mechanism; the anchor support mechanism can effectively support the slope outside the shed tunnel, further avoid collapse, and maintain the stability of the slope and the stability of the shed tunnel.

[0013] Further optimization, the frame includes vertical supports, the vertical supports include several first supports located on the slope side of the road, and several second supports located on the edge side of the road, the first supports and the second supports are connected by a cross frame; the cross frame includes a first cross frame and a second cross frame, the ends of the first cross frame and the second cross frame facing away from each other are respectively connected to the first support and the second support, and the ends of the first cross frame and the second cross frame facing each other are movably connected: the distance between the first cross frame and the second cross frame is adjustable; support is provided by the first support and the second support, and the first support and the second support are stabilized by the cross frame; wherein the spacing between the first cross frame and the second cross frame is adjustable, and the distance between the connecting ends of the first cross frame and the second cross frame is increased to appropriately expand the span of the shed structure according to the specific circumstances of the construction road.

[0014] Further optimization, the frame also includes a first oblique frame and a second oblique frame, the first oblique frame is arranged on the side of the first bracket away from the road, and the second oblique frame is arranged on the side of the second bracket away from the road; a triangular support structure is formed between the first oblique frame and the lower end of the first bracket, and between the second oblique frame and the lower end of the second bracket; the lower end of the first oblique frame and the lower end of the second oblique frame are respectively buried in the pile foundation together with the lower end of the first bracket and the lower end of the second bracket; the lower end of the first oblique frame and the lower end of the second oblique frame are respectively buried in the pile foundation together with the lower end of the first bracket and the lower end of the second bracket, and the first oblique frame and the second oblique frame can further provide support force for the first bracket and the second bracket, making the first bracket and the second bracket more stable.

[0015] Further optimization, the frame also includes a third oblique frame and a reinforcing cross bar, the third oblique frame is connected between the second bracket and the second cross frame; the reinforcing cross bar is connected between adjacent second brackets, and the reinforcing cross bar is set horizontally, vertically or obliquely; the third oblique frame can make the connection between the second bracket and the first cross frame more stable; depending on the specific situation, the reinforcing cross bar can be set horizontally, vertically or obliquely to reinforce the connection stability between several second brackets at multiple angles, thereby improving the overall structural stability of the shed structure.

[0016] Further optimization, the frame body also includes a first connecting plate, the two ends of the cross frame are respectively connected by the first connecting plate and the upper ends of the first bracket and the second bracket, and the first connecting plate is detachably connected to the front side of the first bracket and the second bracket; the first connecting plate is provided with a positioning block on the inner side, the upper side of the positioning block is attached to the lower side of the cross frame, and the side of the positioning block away from the road is attached to the side of the first bracket or the second bracket close to the road; wherein the first connecting plate cooperates with bolts, nuts or rivets to firmly connect the upper end of the first bracket and one end of the first cross frame, one end of the second cross frame and the upper end of the second bracket, and the positioning block can limit and determine the connection angle, so that the overall structure of the shed hole is more stable.

[0017] Further optimization, the frame also includes a baffle, and a baffle is provided between adjacent first brackets; the baffle can effectively prevent mud and rocks on the slope outside the roadside from sliding onto the road surface and affecting traffic.

[0018] For further optimization, the first cross frame and the second cross frame are both made of H-shaped steel, and the second connecting plate is detachably connected between the flange plates on both sides of the first cross frame and the second cross frame; the third connecting plate is detachably connected between both sides of the web plates of the first cross frame and the second cross frame; depending on the specific needs, the distance between the connecting ends of the first cross frame and the second cross frame can be appropriately widened by appropriately extending the second connecting plate and the third connecting plate, so as to appropriately expand the span of the shed structure according to the specific conditions of the construction road.

[0019] Further optimization, the roof angle adjustment mechanism includes a block, a slider, a first spring and an elastic support assembly, the frame is provided with a cross bar across the road, the block is provided on the upper side of the end of the cross bar close to the slope side, a fixed plate is provided on the inner side of the block, and the fixed plate is connected to the slider through the first spring; the slider can move along the length direction of the cross bar; the upper side of the cross bar is provided with a slot hole provided along its own length direction, and the slider is connected to the anchor support mechanism through the slot hole; the lower end of the elastic support assembly is hinged to the slider, and the upper end of the elastic support assembly is hinged to the other end of the top protective mechanism; during installation and construction, according to specific needs, by adjusting the position of the slider, the elastic support assembly is driven to adjust the angle of the third cross frame, and then the angle of the protective plate is adjusted, which is beneficial for the protective plate to block falling rocks or collapsed soil and rocks; the first spring provides elastic support, which is convenient for adjusting the position of the slider and can make the slider more stable.

[0020] Further optimization is carried out, the end of the slider away from the first spring is provided with two first positioning plates, the two first positioning plates are arranged on both sides of the slot, and a number of circular holes are provided on the first positioning plate along the length direction of the first positioning plate; a number of circular holes are evenly provided on the first positioning plate and on the corresponding first cross frame within the movable range, so that after the slider is adjusted, the first positioning plate and the slider are fixed by bolts, nuts or rivets.

[0021] Further optimization is that the cross bar is H-shaped steel, the slider is located on the web of the cross bar, and limit plates are provided on both sides of the upper end of the cross bar, and the vertical projections of the two limit plates on the opposite sides are located on the slider; the limit plates can provide limit and guidance for the movement of the slider.

[0022] Further optimization, the elastic support assembly includes a sleeve, a guide rod and a second spring, the sleeve is hinged to the upper side of the slider, the lower end of the guide rod is slidably connected to the inside of the sleeve, the second spring is sleeved on the guide rod, the two ends of the second spring are respectively connected to the upper end of the guide rod and the upper end of the sleeve, and the upper end of the guide rod is hinged to the other end of the top protective mechanism; under the pressure of the third cross frame and the protective plate, the guide rod will expand and contract in the sleeve under the elastic support of the second spring, thereby effectively buffering the pressure of flying rocks or collapsed soil and rocks impacting the protective plate, and through a certain degree of rebound, it helps to fall soil and rocks to the outside of the road, effectively protecting the shed tunnel mechanism and improving its impact resistance.

[0023] Further optimization, the anchoring support mechanism also includes a vertical rod, and vertical rods are provided on the two horizontal rods, and the upper ends of the vertical rods are connected to the slider through slots; the frame is rotatably connected between the two vertical rods; one side of the frame is provided with a vertical bar, and the upper end of the anchor cable of the anchor assembly passes through the frame and is fixed to the vertical bar through an anchor plate; the vertical rod can move with the movement of the slider, so that the connection point of the upper end of the frame and the anchor assembly moves synchronously, so that the anchor point is selected according to the angle of the protective plate, so that the entire shed structure is more stable.

[0024] Further optimization is that the lower end of the vertical rod is movably connected to a second positioning plate, and the second positioning plate can move in a direction away from or close to the first bracket; the second positioning plate is provided with a limit block at one end close to the first bracket, and the limit block abuts the side of the first bracket; wherein the second positioning plate slides through the lower end of the vertical rod, and a number of circular holes are evenly opened on the second positioning plate and the lower end of the vertical rod, and the hole spacing is the same as the hole spacing of the circular holes on the first positioning plate. The vertical rod moves with the movement of the slider. After the slider is adjusted, the second positioning plate can be fixed to the lower end of the vertical rod by bolts, nuts or rivets, and the limit block can provide limiting support to make the frame stable.

[0025] Further optimization is that the frame is provided with a baffle on the side adjacent to the road, the upper end of the baffle has a vertical slot, the slot is used to pass the anchor cable; a slot is opened in the middle of the upper side of the baffle to facilitate tensioning the anchor cable.

[0026] For further optimization, the frame is provided with long holes, and the long holes are arranged along the length direction of the frame; depending on the situation, multiple anchoring components can be set along the length direction of the long holes; in addition, the frame can be evenly or spaced between the first brackets as required by actual conditions. If more anchoring points are required, the density of the first bracket and the frame needs to be appropriately increased to increase the anchoring points.

[0027] An anchor assembly, comprising an anchor cable, a conical head, a first elastic clip, and a drill rod; the end of the anchor cable extending into the slope is connected to the conical head of the conical head; the anchor cable is provided with a plurality of first elastic clips in sequence along its length, the first elastic clips comprising a first fixing ring, the anchor cable passing through the axis of the first fixing ring; a plurality of first spring pieces are evenly distributed along the circumferential direction of the upper side of the first fixing ring, the drill rod is sleeved on the anchor cable, and the plurality of first elastic clips are sleeved therein; the lower end of the first spring piece is connected to the upper side of the first fixing ring, and when the upper end of the first spring piece is squeezed in by the drill rod, it has an elastic force away from the axis of the anchor cable. In this solution, by pulling out the drill rod, grouting is simultaneously performed by a small grouting machine during the pulling-out process. After the drill rod is pulled out and the remaining first spring pieces are released, the first spring pieces expand due to their own elasticity, and their upper ends will be clamped to the inner wall of the slope hole, further increasing the anchoring force.

[0028] Further optimization also includes a connecting tube, which is located between the drill rod and the conical head and is coaxially arranged. A slot is provided in the circumferential direction of the inner side wall of the connecting tube, and the upper end of the first spring piece is provided with a block that can be inserted into the slot; by clamping the first elastic clamp at the bottom in the connecting tube, it is convenient to pull out the drill rod without affecting the internal anchor cable and the first elastic clamp.

[0029] Further optimization also includes a second elastic clip, which is located between the connecting tube and the conical head and is coaxially arranged; the second elastic clip includes a second fixing ring, the upper end of the conical head is provided with a rod, the upper end of the rod passes through the second fixing ring and is movably connected to the connecting tube, and the rod can move along its own axial direction; the lower end of the second fixing ring is circumferentially provided with a plurality of second elastic sheets, and the plurality of second elastic sheets are circumferentially arranged along the conical surface of the conical head; in this solution, under the drive of external force, the rod drives the conical head to retract, and under the obstruction of the oblique side surface of the conical head, the plurality of second elastic sheets all expand and are clamped on the inner end of the slope hole, thereby further improving the anchoring force.

[0030] Further optimization is that the rod is a screw, and the inner side of the lower end of the connecting tube is provided with a threaded hole adapted to the rod, and the drill rod and the connecting tube are snap-fitted together; the lower end of the conical head is provided with anti-slip teeth; through the snap-fit connection, the drill rod drives the connecting tube to rotate, and during the rotation of the connecting tube, the conical head is driven to retract into the connecting tube through threaded cooperation, thereby causing the second spring sheet to fully expand; wherein the anti-slip teeth are used to prevent the conical head 450 from rotating therewith.

[0031] Further optimization is carried out, the lower end of the drill rod and the upper end of the connecting tube are provided with a plurality of mutually meshing protrusions; the lower end of the drill rod and the upper end of the connecting tube are both magnetic; the plurality of protrusions on the upper end of the connecting tube and the plurality of protrusions on the lower end of the drill rod are staggered and engaged, and a stable connection is achieved through magnetization, and the drill rod can be pulled out by applying a certain external force.

[0032] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0033] 1. The present invention provides a rockfall-resistant shed tunnel structure. By adopting this solution, the rockfall-resistant shed tunnel structure can be installed on sections of small non-standard roads with risks of rockfall and landslides. Due to the use of steel structure, the construction is relatively convenient, the construction period is short, and the cost is low. It can effectively reduce or avoid the hazards caused by flying rocks or collapses on small non-standard roads, ensure the safe passage of residents, and protect people's lives and property.

[0034] 2. The present invention provides an anchoring assembly. By adopting this solution, the anchoring force is further improved by expanding the first spring piece and the second spring piece; and the corresponding combined structure is applied to make construction faster and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the following briefly introduces the drawings required for use in the examples. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be considered as limiting the scope. A person of ordinary skill in the art can also derive other relevant drawings based on these drawings without inventive effort. In the drawings:

[0036] Figure 1 This is a schematic diagram of the three-dimensional structure of the rockfall impact resistant shed-tunnel structure provided in an embodiment of the present application;

[0037] Figure 2 Schematic diagram of the support extension mechanism, top protection mechanism and anchor support mechanism provided in the embodiment of this application;

[0038] Figure 3 A schematic diagram of the structure of the second connecting plate and the third connecting plate provided in an embodiment of the present application;

[0039] Figure 4 Schematic diagram of the baffle and slot structure provided in the embodiment of the present application;

[0040] Figure 5 A schematic diagram of the structure of the first connecting plate and the positioning block provided in an embodiment of the present application;

[0041] Figure 6 A schematic diagram of the structure of the ceiling angle adjustment mechanism provided in an embodiment of the present application;

[0042] Figure 7 This is a schematic diagram of the exploded structure of the ceiling angle adjustment mechanism provided in an embodiment of the present application;

[0043] Figure 8 A schematic diagram of the structure of the elastic support assembly provided in an embodiment of the present application;

[0044] Figure 9 A schematic diagram of the structure of the anchor support mechanism provided in the embodiment of this application;

[0045] Figure 10 A schematic diagram of the explosion structure of the anchor support mechanism provided in the embodiment of this application;

[0046] Figure 11 A schematic cross-sectional structure diagram of an anchor support mechanism provided in an embodiment of the present application;

[0047] Figure 12 A schematic diagram of the structure of a second elastic clip provided in an embodiment of the present application;

[0048] Figure 13This is a schematic diagram of the first elastic clip structure provided in an embodiment of the present application.

[0049] Markings and corresponding parts names in the accompanying drawings:

[0050] 100-support extension mechanism; 110-first bracket; 111-first oblique bracket; 120-second bracket; 121-second oblique bracket; 122-third oblique bracket; 123-reinforcement bar; 130-first horizontal bracket; 131-slot; 140-second horizontal bracket; 150-first connecting plate; 151-positioning block; 160-blocking plate; 161-slot; 170-second connecting plate; 180-third connecting plate; 200-top protection mechanism; 210-third horizontal bracket; 220-protection plate; 300-ceiling angle adjustment mechanism; 310-blocking block; 311-fixing plate; 320-sliding block; 321-first positioning plate; 330-first elastic Spring; 340-limiting plate; 350-elastic support assembly; 351-sleeve; 352-guide rod; 353-second spring; 400-anchor support mechanism; 410-vertical rod; 420-limiting block; 421-second positioning plate; 430-frame; 431-vertical bar; 4311-anchor plate; 440-anchor cable; 441-first elastic clip; 4411-first fixing ring; 4412-first spring piece; 450-conical head; 451-rod; 452-anti-slip teeth; 460-connecting pipe; 461-slot; 470-second elastic clip; 471-second fixing ring; 472-second spring piece; 480-drill rod; 490-bump. DETAILED DESCRIPTION

[0051] 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 examples and drawings. The exemplary embodiments of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0052] Example 1

[0053] This embodiment 1 provides a rockfall impact resistant shed-hole structure, such as Figures 1-13 As shown, the rockfall impact resistant shed tunnel structure according to the embodiment of the present application includes a support and extension mechanism 100, a top protection mechanism 200, a roof angle adjustment mechanism 300 and an anchoring support mechanism 400. The support and extension mechanism 100 is mostly constructed with H-shaped steel with strong tensile, compressive and bending resistance in all directions, which can effectively reduce the construction difficulty and cost. The top protection mechanism 200 and the roof angle adjustment mechanism 300 are arranged above the support and extension mechanism 100. The roof angle can be adjusted as needed to effectively block falling rocks or collapsed earth and rocks, ensure smooth roads and pedestrian safety, and the anchoring support mechanism 400 can effectively support the slopes outside the shed tunnel, further avoid collapse, and maintain the stability of the slopes and the stability of the shed tunnel.

[0054] According to some embodiments of the present application, Figure 2-Figure 5As shown, the support extension mechanism 100 includes a first bracket 110, a second bracket 120, a first cross frame 130 and a second cross frame 140. The upper end of the first bracket 110 is fixedly connected to one end of the first cross frame 130, the other end of the first cross frame 130 is fixedly connected to one end of the second cross frame 140, and the other end of the second cross frame 140 is fixedly connected to the upper end of the second bracket 120. The first bracket 110 is provided with a first oblique frame 111 on the side away from the road. The upper end of the first oblique frame 111 is fixedly connected to the side of the first bracket 110 away from the road. The second bracket 120 is provided with a second oblique frame 121 on the side away from the road. The upper end of the second oblique frame 121 is fixedly connected to the side of the second bracket 120 away from the road. The lower ends of the first oblique frame 111 and the second oblique frame 121 are respectively connected to the upper end of the second bracket 120. The lower ends of the first bracket 110 and the second bracket 120 are buried in the pile foundation together, and the first oblique frame 111 and the second oblique frame 121 can further provide support for the first bracket 110 and the second bracket 120, making the first bracket 110 and the second bracket 120 more stable. A third oblique frame 122 is provided between the second bracket 120 and the first cross frame 130. The third oblique frame 122 sections are fixedly connected to the inner side of the second bracket 120 and the lower side of the first cross frame 130 respectively. The third oblique frame 122 can make the connection between the second bracket 120 and the first cross frame 130 more stable. A reinforcing cross bar 123 is provided on the side of the second bracket 120 away from the road. The reinforcing cross bar 123 is fixedly connected to the side of the second bracket 120 away from the road. The crossbar 123 can be set horizontally, vertically or obliquely, and the connection stability between the second brackets 120 can be reinforced at multiple angles to improve the overall structural stability of the shed structure. The upper end of the first bracket 110 is fixedly connected to one end of the first cross frame 130 through the first connecting plate 150, and the other end of the second cross frame 140 is also fixedly connected to the upper end of the second bracket 120 through the first connecting plate 150. A positioning block 151 is provided on the inner side of the first connecting plate 150. The upper side of the positioning block 151 is respectively attached to the lower side of the first cross frame 130 and the lower side of the second cross frame 140. One side of the positioning block 151 is respectively attached to the side of the first bracket 110 close to the road and the side of the second bracket 120 close to the road. The first connecting plate 150 can be firmly connected to the first bracket 110 with bolts, nuts or rivets. The upper end of the bracket 110 and one end of the first cross frame 130, one end of the second cross frame 140 and the upper end of the second bracket 120, the positioning block 151 can limit the connection angle to make the overall structure of the shed more stable, a baffle 160 is provided on one side of the first bracket 110, and both sides of the baffle 160 are fixedly connected to one side of the two first brackets 110. The baffle 160 can effectively prevent mud and rocks on the slope outside the roadside from sliding onto the road surface and affecting traffic. The other end of the first cross frame 130 is fixedly connected to one end of the second cross frame 140 through a second connecting plate 170. Second connecting plates 170 are respectively provided on both sides of the first cross frame 130 and the second cross frame 140. Third connecting plates 180 are respectively provided on the upper and lower sides of the junction of the first cross frame 130 and the second cross frame 140.The third connecting plate 180 is fixedly connected to the first cross frame 130 and the second cross frame 140 at both ends. Depending on the specific situation, the distance between the connecting ends of the first cross frame 130 and the second cross frame 140 can be appropriately increased by appropriately extending the second connecting plate 170 and the third connecting plate 180 to appropriately increase the distance between the connecting ends of the first cross frame 130 and the second cross frame 140, so as to appropriately expand the span of the shed tunnel structure according to the specific conditions of the construction road.

[0055] According to some embodiments of the present application, Figure 2 As shown, the top protection mechanism 200 includes a third cross frame 210 and a protection plate 220. The third cross frame 210 is arranged above the first cross frame 130 and the second cross frame 140. One end of the third cross frame 210 is rotatably connected to the end of the second cross frame 140 close to the second bracket 120. The protection plate 220 can adjust the angle appropriately according to specific needs. The protection plate 220 can effectively block and overturn soil and rocks outside the road, avoid harm to pedestrians, and ensure safe passage.

[0056] According to some embodiments of the present application, Figure 2 、 Figure 6-Figure 8As shown, the roof angle adjustment mechanism 300 includes a stopper 310, a slider 320, a first spring 330 and an elastic support assembly 350. The stopper 310 is arranged on the upper side of the first cross frame 130 close to the first bracket 110. A fixing plate 311 is provided on the side of the stopper 310 close to the second cross frame 140. The slider 320 is arranged above the slot 131. The slider 320 is attached to the upper side of the first cross frame 130. The slider 320 is arranged on the side of the fixing plate 311 away from the stopper 310. Several first springs 330 are arranged between the slider 320 and the fixing plate 311, the two ends of the first spring 330 are respectively fixedly connected to the slider 320 and the fixed plate 311, the two ends of the first spring 330 are respectively fixedly connected to the slider 320 and the fixed plate 311 by welding or riveting, the elastic support component 350 is arranged between the third cross frame 210 and the slider 320, the two ends of the elastic support component 350 are respectively rotatably connected to the lower side of the third cross frame 210 and the upper side of the slider 320, the first cross frame 130 is close to the first bracket 110. A slot 131 is opened at one end, and the slider 320 is away from the first spring 330. Two The first positioning plate 321, the two first positioning plates 321 are symmetrically arranged on both sides of the slot 131, and two limiting plates 340 are symmetrically arranged at both ends of the upper side of the slider 320. The two limiting plates 340 are symmetrically fixedly connected to the two ends of the upper side of the first cross frame 130. The two limiting plates 340 are symmetrically fixedly connected to the two ends of the upper side of the first cross frame 130 by welding. The two ends of the upper side of the slider 320 are respectively attached to the lower sides of the two limiting plates 340. During installation and construction, according to specific needs, the position of the slider 320 is adjusted to drive the elastic support assembly 350 to adjust the third The angle of the cross frame 210 is adjusted, and then the angle of the protective plate 220 is adjusted, which is beneficial for the protective plate 220 to block falling rocks or collapsed soil and rocks. The limit plate 340 can provide limitation and guidance for the movement of the slider 320. A number of circular holes are evenly opened on the first positioning plate 321 and the corresponding first cross frame 130 within the range of movement, so that after the slider 320 is adjusted, the first positioning plate 321 and the slider 320 can be fixed by bolts, nuts or rivets. The first spring 330 provides elastic support, which is convenient for adjusting the position of the slider 320 and can make the slider 320 more stable.

[0057] The second spring 353 is fixedly connected to the upper end of the guide rod 352 and the upper end of the sleeve 351 by welding or riveting. The two ends of the second spring 353 are respectively fixedly connected to the upper end of the guide rod 352 and the upper end of the sleeve 351 by welding or riveting. The upper end of the second spring 353 is fixedly connected to the upper end of the guide rod 352 and the upper end of the sleeve 351 by welding or riveting. Under the pressure of the third cross frame 210 and the protective plate 220, the guide rod 352 will expand and contract in the sleeve 351 under the elastic force of the second spring 353, thereby effectively buffering the pressure of flying rocks or collapsed soil and rocks impacting the protective plate 220, and through a certain degree of rebound, it helps to fall soil and rocks to the outside of the road, effectively protecting the shed tunnel mechanism and improving its impact resistance.

[0058] Example 2

[0059] This embodiment 2 is further optimized based on embodiment 1 and provides an anchoring assembly.

[0060] like Figure 2 、 Figure 4 and Figures 9-13As shown, the anchor support mechanism 400 includes a vertical rod 410, a frame 430 and an anchor assembly, the anchor assembly includes an anchor cable 440, a conical head 450, a connecting pipe 460, a second elastic clamp 470 and a drill rod 480, the upper end of the vertical rod 410 passes through the slot 131, the upper end of the vertical rod 410 is fixedly connected to the lower side of the slider 320, the two ends of the frame 430 are respectively rotatably connected to one side of the two vertical rods 410, a vertical bar 431 is provided in the middle of the side of the frame 430 close to the road, the upper end of the anchor cable 440 is fixedly connected to the vertical bar 431 through an anchor plate 4311, the anchor cable 440 passes through the drill rod 480, the lower end of the anchor cable 440 is arranged inside the connecting pipe 460, the upper end of the conical head 450 is provided with a screw 451, and the lower end of the screw 451 is fixedly connected to the conical head 4 50 upper end, the lower end of the screw 451 is fixedly connected to the upper end of the conical head 450 by welding, the screw 451 passes through the second elastic clamp 470, the upper end of the screw 451 threadedly passes through the lower end of the connecting pipe 460, and a slot 161 is provided in the middle of the upper side of the baffle 160 to facilitate tensioning the anchor cable 440. A limit block 420 is provided at the lower end of the vertical rod 410, and one side of the limit block 420 is attached to the side of the first bracket 110 close to the road. A second positioning plate 421 is provided on the side of the limit block 420 close to the road, and the second positioning plate 421 slides through the lower end of the vertical rod 410. A number of circular holes are evenly provided on the second positioning plate 421 and the lower end of the vertical rod 410. The hole spacing is the same as the circular hole spacing on the first positioning plate 321. The vertical rod 410 moves with the slider 320 The second positioning plate 421 can be fixed to the lower end of the vertical rod 410 by bolts, nuts or rivets after the slider 320 is adjusted. The limit block 420 can provide a limit support to make the frame 430 stable. The frame 430 can be evenly or spaced between the first bracket 110 as needed in actual conditions. If more anchor points are required, the density of the first bracket 110 and the frame 430 needs to be appropriately increased to increase the anchor points. A number of first elastic clips 441 are evenly arranged on the anchor cable 440. The first elastic clip 441 includes a first fixing ring 4411 and a first elastic piece 4412. The anchor cable 440 is fixed through the first fixing ring 4411. The anchor cable 440 is fixed through the first fixing ring 4411 by welding or riveting. The first spring pieces 4412 are evenly distributed on the upper side of the first fixing ring 4411, and the lower side of the first spring piece 4412 is fixedly connected to the upper edge of the first fixing ring 4411. The lower side of the first spring piece 4412 is fixedly connected to the upper edge of the first fixing ring 4411 by welding. The lower side of the conical head 450 is provided with anti-slip teeth 452. A card slot 461 is provided inside the upper end of the connecting tube 460. The upper ends of several first spring pieces 4412 on the upper edge of a first fixing ring 4411 at the lower end of the anchor cable 440 are respectively clamped in the card slot 461. The second elastic clamp 470 includes a second fixing ring 471 and a second spring piece 472. The screw 451 runs through the second fixing ring 471. Several second spring pieces 472 are evenly distributed on the lower edge of the second fixing ring 471.The upper end of the second spring piece 472 is fixedly connected to the lower edge of the second fixing ring 471. The upper end of the second spring piece 472 is fixedly connected to the lower edge of the second fixing ring 471 by welding. Several second spring pieces 472 are arranged on the outside of the conical head 450. Several bumps 490 are evenly arranged on the upper edge of the upper end of the connecting pipe 460. Several bumps 490 are also evenly arranged on the lower edge of the lower end of the drill rod 480. The upper end of the connecting pipe 460 and the lower end of the drill rod 480 together with the bumps 490 are magnetized. After drilling a hole on the slope with a small drilling rig, the connecting pipe 460 is connected to the lower edge of the second fixing ring 471. The plurality of protrusions 490 on the upper end of the pipe 460 and the plurality of protrusions 490 on the lower end of the drill rod 480 are staggered and engaged with each other, and then the conical head 450, the connecting pipe 460 and the second elastic clamp 470 are sent into the bottom of the hole through the drill rod 480. Then, the drill rod 480 is rotated again by the drilling rig to retract the screw 451 into the connecting pipe 460 and push the second fixing ring 471 toward the conical head 450. The anti-slip teeth 452 can prevent the conical head 450 from rotating accordingly. Under the oblique side of the conical head 450, the plurality of second elastic pieces 472 are all expanded. After the drill rod 480 is pulled out and the remaining first spring pieces 4412 are released, the first spring pieces 4412 will expand and their upper ends will be stuck in the slots 461 due to their own elasticity. The inner wall of the slope hole further increases the anchoring force. After a period of time, the upper end of the anchor cable 440 is anchored to the vertical bar 431 through the anchor plate 4311. The anchor cable 440 can pass through the slot 161 to avoid damaging the baffle 160. To increase strength, the vertical bar 431 can be made of H-shaped steel or channel steel. Then, a jack is set on the frame 430 to tension the anchor cable 440. Appropriate backfill can be performed between the baffle 160 and the slope. This not only increases the stability of the slope, but also enhances the stability of the entire shed hole structure and improves its ability to resist falling rocks.

[0061] Specifically, the working principle of the rockfall impact resistant shed tunnel structure is as follows: when in use, appropriately excavate the foot of the slope of the mountain outside the roadside or the high ground, and try to straighten the road section to be constructed. If it is really difficult to straighten, the shape of the top protective plate 220 should be appropriately changed to make the top of the entire shed tunnel flush and roughly spliced, and maintain a certain range of rotation of the protective plate 220 with the outer end of the second cross frame 140 as the center. According to actual conditions, a number of pile foundations are set with a certain density or distance rule, and the lower ends of a number of first brackets 110 and a number of second brackets 120 are buried in the pile foundations. The first oblique frame 111 and the second oblique frame 121 can further provide support for the first bracket 110 and the second bracket 120, and the third oblique frame 122 can make the second bracket 120 and the first cross frame 130 The connection is more stable. Depending on the needs of specific circumstances, the reinforcing cross bar 123 can be set horizontally, vertically or obliquely to reinforce the connection stability between several second brackets 120 at multiple angles, thereby improving the structural stability of the overall shed hole structure. Generally, the first bracket 110 and the second bracket 120 can be set correspondingly, and then installed in sequence on the upper end of the first bracket 110 and the upper end of the second bracket 120 to install and fix the first cross frame 130 and the second cross frame 140. The first connecting plate 150 can be used with bolts, nuts or rivets to firmly connect the upper end of the first bracket 110 and one end of the first cross frame 130, one end of the second cross frame 140 and the upper end of the second bracket 120. The positioning block 151 can limit and determine the connection angle, making the overall structure of the shed hole more stable, and can be appropriately set according to the width of the road. The height of the first bracket 110 and the second bracket 120 is set, and the distance between the connecting ends of the first cross frame 130 and the second cross frame 140 is appropriately stretched by appropriately extending the second connecting plate 170 and the third connecting plate 180, so as to appropriately expand the span of the shed hole structure according to the specific conditions of the construction road, and then the third cross frame 210 is installed and fixed. After completion, the protective plate 220 is installed and fixed on the upper side of the third cross frame 210, and the shed hole is installed and set. Depending on the specific situation, the position of the slider 320 is adjusted to drive the elastic support assembly 350 to adjust the angle of the third cross frame 210, and then adjust the angle of the protective plate 220, so that the protective plate 220 can block falling rocks or collapsed soil and rocks. The limit plate 340 can provide a limit and guide for the movement of the slider 320. The first spring 330 provides elastic support, which is convenient for adjusting the position of the slider 320 and making the slider 320 more stable. The elastic support assembly 350 can effectively buffer the pressure of flying rocks or collapsed earth and rocks impacting the protective plate 220, and through a certain degree of rebound, it helps to roll earth and rocks to the outside of the road, effectively protecting the shed hole mechanism and improving its impact resistance. After the slider 320 is adjusted, the second positioning plate 421 can be fixed to the lower end of the vertical rod 410 by bolts, nuts or rivets. The limit block 420 can provide limiting support.To make the frame 430 stable, the frame 430 can be evenly or spaced between the first brackets 110 according to actual needs. If more anchor points are required, the density of the first bracket 110 and the frame 430 needs to be appropriately increased to increase the anchor points. After drilling a hole on the slope with a small drill rig, the several protrusions 490 at the upper end of the connecting pipe 460 and the several protrusions 490 at the lower end of the drill rod 480 are staggered and engaged. Then, the cone head 450, the connecting pipe 460 and the second elastic clamp 470 are sent to the bottom of the hole together through the drill rod 480. Then, the drill rod 480 is rotated again by the drill rig to retract the screw 451 into the connecting pipe 460 and the cone head 4 50 pushes the second fixing ring 471, and the anti-slip teeth 452 can prevent the conical head 450 from rotating. Under the obstruction of the oblique side surface of the conical head 450, several second elastic pieces 472 are all expanded and clamped at the inner end of the slope hole. Then, the end of the anchor cable 440 provided with the first elastic clamp 441 is inserted into the drill rod 480. When a first fixing ring 4411 at the end of the anchor cable 440 enters the interior of the connecting pipe 460, several first elastic pieces 4412 are all expanded and their upper ends are clamped into the clamping groove 461. Then, the drill rod 480 is pulled out. During the pulling-out process, grouting is simultaneously performed by a small grouting machine. After the drill rod 480 is pulled out and the remaining first elastic pieces 4412 are released, It has elasticity. The first spring piece 4412 expands and its upper end is clamped on the inner wall of the slope hole, further increasing the anchoring force. After a period of time, the upper end of the anchor cable 440 is anchored on the vertical bar 431 through the anchor plate 4311. The anchor cable 440 can pass through the slot 161 to avoid damaging the baffle 160. To increase the strength, the vertical bar 431 can be made of H-shaped steel or channel steel, and then a jack is set on the frame 430 to tension the anchor cable 440. Appropriate backfill can be performed between the baffle 160 and the slope. This not only increases the stability of the slope, but also enhances the overall stability of the shed hole structure and improves the impact resistance of falling rocks. Protective nets are appropriately installed on the first and second horizontal frames 130, 140 below to further intercept debris and fine stones, keeping the road clean and avoiding interference with traffic. Appropriate blocking protective nets can be installed between the ends of the shed tunnel structure and the mountain or high ground. When the protective plates 220 block harmful falling rocks or landslides, the protective range and strength of the shed tunnel structure are further improved. This makes it relatively convenient to install shed tunnel structures on small, non-standard roads in special terrain. Not only does it shorten the construction period and reduce costs, it can also effectively reduce or avoid the hazards caused by falling rocks or landslides to residents, meet the traffic safety needs of residents in special areas, and protect people's lives and property.

[0062] 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. A rockfall-resistant shed-tunnel structure, characterized in that: include: A support and expansion mechanism (100); the support and expansion mechanism (100) comprises a frame formed by splicing together a plurality of steel components; A top protection mechanism (200); one end of the top protection mechanism (200) is hinged to an end of the frame located on the road side; the other end of the top protection mechanism (200) is connected to the other end of the frame via a roof angle adjustment mechanism (300); A ceiling angle adjustment mechanism (300); both ends of the ceiling angle adjustment mechanism (300) are respectively hinged to the top protection mechanism (200) and the other end of the frame, and are used to drive the other end of the top protection mechanism (200) to rotate around one end of the ceiling angle adjustment mechanism (300); Anchoring support mechanism (400); the anchoring support mechanism (400) comprises a frame (430) arranged on the support extension mechanism (100), an anchoring assembly being connected to the frame (430), and the anchoring assembly being anchored to the slope; The frame includes a vertical bracket, the vertical bracket includes a plurality of first brackets (110) located on the slope side of the road, and a plurality of second brackets (120) located on the edge side of the road, the first brackets (110) and the second brackets (120) are connected by a cross frame; the cross frame includes a first cross frame (130) and a second cross frame (140), the ends of the first cross frame (130) and the second cross frame (140) facing away from each other are respectively connected to the first bracket (110) and the second bracket (120), and the ends of the first cross frame (130) and the second cross frame (140) facing toward each other are movably connected; the distance between the first cross frame (130) and the second cross frame (140) is adjustable; The roof angle adjustment mechanism (300) comprises a stopper (310), a slider (320), a first spring (330) and an elastic support assembly (350); the frame is provided with a crossbar that crosses the road; the stopper (310) is provided on the upper side of the end of the crossbar close to the slope side; a fixing plate (311) is provided on the inner side of the stopper (310); the fixing plate (311) is connected to the slider (320) via the first spring (330); the slider (320) can move along the length direction of the crossbar; the upper side of the crossbar is provided with a slot (131) provided along its own length direction; the slider (320) is connected to the anchor support mechanism (400) via the slot (131); the lower end of the elastic support assembly (350) is hinged to the slider (320), and the upper end of the elastic support assembly (350) is hinged to the other end of the top protection mechanism (200); The anchoring support mechanism (400) further comprises a vertical rod (410), each of the two horizontal rods being provided with a vertical rod (410), the upper end of the vertical rod (410) being connected to the slider (320) via a slot (131); the frame (430) being rotatably connected between the two vertical rods (410); a vertical bar (431) being provided on one side of the frame (430), the upper end of the anchor cable (440) of the anchoring assembly passing through the frame (430) and being fixed to the vertical bar (431) via an anchor plate (4311); The lower end of the vertical rod (410) is movably connected to a second positioning plate (421), and the second positioning plate (421) can move in a direction away from or close to the first bracket (110); the end of the second positioning plate (421) close to the first bracket (110) is provided with a limiting block (420), and the limiting block (420) abuts against the side of the first bracket (110).

2. The rockfall impact resistant shed-tunnel structure according to claim 1, characterized in that: The frame body further comprises a first oblique frame (111) and a second oblique frame (121), wherein the first oblique frame (111) is arranged on a side of the first bracket (110) away from the road, and the second oblique frame (121) is arranged on a side of the second bracket (120) away from the road; a triangular support structure is formed between the first oblique frame (111) and the lower end of the first bracket (110), and between the second oblique frame (121) and the lower end of the second bracket (120); the lower end of the first oblique frame (111) and the lower end of the second oblique frame (121) are respectively buried in the pile foundation with the lower end of the first bracket (110) and the lower end of the second bracket (120).

3. The rockfall impact resistant shed-tunnel structure according to claim 1, characterized in that: The frame body further comprises a third oblique frame (122) and a reinforcing cross bar (123), wherein the third oblique frame (122) is connected between the second frame (120) and the second cross bar (140); the reinforcing cross bar (123) is connected between adjacent second frames (120), and the reinforcing cross bar (123) is arranged horizontally, longitudinally or obliquely.

4. The rockfall impact resistant shed-tunnel structure according to claim 1, characterized in that: The frame body further includes a first connecting plate (150), and the two ends of the cross frame are respectively connected to the upper ends of the first bracket (110) and the second bracket (120) through the first connecting plate (150), and the first connecting plate (150) is detachably connected to the front sides of the first bracket (110) and the second bracket (120); the first connecting plate (150) is provided with a positioning block (151) on the inner side, and the upper side of the positioning block (151) is attached to the lower side of the cross frame, and the side of the positioning block (151) away from the road is attached to the side of the first bracket (110) or the second bracket (120) close to the road.

5. The rockfall impact resistant shed-tunnel structure according to claim 1, characterized in that: The frame body further comprises a baffle (160), and a baffle (160) is provided between adjacent first brackets (110).

6. The rockfall impact resistant shed-tunnel structure according to claim 1, characterized in that: The first cross frame (130) and the second cross frame (140) are both made of H-shaped steel. A second connecting plate (170) is detachably connected between the flange plates on both sides of the first cross frame (130) and the second cross frame (140). A third connecting plate (180) is detachably connected between the web plates on both sides of the first cross frame (130) and the second cross frame (140).

7. The rockfall impact resistant shed-tunnel structure according to claim 1, characterized in that: The end of the slider (320) away from the first spring (330) is provided with two first positioning plates (321), and the two first positioning plates (321) are respectively arranged on both sides of the slot (131). Along the length direction of the first positioning plate (321), the first positioning plate (321) is provided with a plurality of circular holes.

8. The rockfall impact resistant shed-tunnel structure according to claim 1, characterized in that: The crossbar is an H-shaped steel, the slider (320) is located on the web of the crossbar, and limiting plates (340) are provided on both sides of the upper end of the crossbar, and the vertical projections of the two limiting plates (340) on the opposite sides are both located on the slider (320).

9. The rockfall impact resistant shed-tunnel structure according to claim 1, characterized in that: The elastic support assembly (350) includes a sleeve (351), a guide rod (352) and a second spring (353), wherein the sleeve (351) is hinged to the upper side of the slider (320), the lower end of the guide rod (352) is slidably connected to the inside of the sleeve (351), the second spring (353) is sleeved on the guide rod (352), the two ends of the second spring (353) are respectively connected to the upper end of the guide rod (352) and the upper end of the sleeve (351), and the upper end of the guide rod (352) is hinged to the other end of the top protection mechanism (200).

10. The rockfall impact resistant shed-tunnel structure according to claim 1, characterized in that: A baffle (160) is provided on the side of the frame body located on the road edge side, and a vertical slot (161) is provided on the upper end of the baffle (160), and the slot (161) is used to pass the anchor cable (440).

11. The rockfall impact resistant shed-tunnel structure according to claim 1, characterized in that: The frame (430) is provided with an elongated hole, and the elongated hole is arranged along the length direction of the frame (430).

12. A rockfall impact resistant shed-tunnel structure according to any one of claims 1 to 11, characterized in that: The anchoring assembly comprises an anchor cable (440), a conical head (450), a first elastic clamp (441), and a drill rod (480); One end of the anchor cable (440) extending into the slope is connected to the conical head of the conical head (450); The anchor cable (440) is provided with a plurality of first elastic clamps (441) in sequence along its length direction. The first elastic clamps (441) include a first fixing ring (4411). The anchor cable (440) passes through the axis of the first fixing ring (4411). A plurality of first elastic pieces (4412) are evenly distributed along the circumferential direction of the upper side of the first fixing ring (4411); the drill rod (480) is sleeved on the anchor cable (440), and a plurality of first elastic clips (441) are sleeved therein; the lower end of the first elastic piece (4412) is connected to the upper side of the first fixing ring (4411); when the upper end of the first elastic piece (4412) is squeezed inside by the drill rod (480), it has an elastic force away from the axis of the anchor cable (440).

13. The rockfall impact resistant shed-tunnel structure according to claim 12, characterized in that: The apparatus further comprises a connecting tube (460) located between the drill rod (480) and the conical head (450) and arranged coaxially. A slot (461) is provided on the inner side wall of the connecting tube (460) in the circumferential direction. The upper end of the first elastic piece (4412) is provided with a block capable of being inserted into the slot (461).

14. The rockfall impact resistant shed-tunnel structure according to claim 13, characterized in that: The invention also includes a second elastic clamp (470), which is located between the connecting tube (460) and the conical head (450) and is coaxially arranged; the second elastic clamp (470) includes a second fixing ring (471), the upper end of the conical head (450) is provided with a rod (451), the upper end of the rod (451) passes through the second fixing ring (471) and is movably connected to the connecting tube (460), and the rod (451) can move along its own axis; the lower end of the second fixing ring is circumferentially provided with a plurality of second elastic sheets (472), and the plurality of second elastic sheets (472) are circumferentially arranged along the conical surface of the conical head (450).

15. The rockfall impact resistant shed-tunnel structure according to claim 14, characterized in that: The rod (451) is a screw rod, and the inner side of the lower end of the connecting tube (460) is provided with a threaded hole adapted to the rod (451), and the drill rod (480) and the connecting tube (460) are snap-fitted and connected; the lower end of the conical head (450) is provided with anti-slip teeth (452).

16. The rockfall impact resistant shed-tunnel structure according to claim 15, characterized in that: The lower end of the drill rod (480) and the upper end of the connecting pipe (460) are both provided with a plurality of mutually engaged protrusions (490); and the lower end of the drill rod (480) and the upper end of the connecting pipe (460) are both magnetic.

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