Mountain forest footpath cantilever platform

Abstract

The utility model relates to a mountain forest footpath overhanging platform which comprises a platform body and a supporting column, the platform body is of an overhanging structure and is fixedly connected to the supporting column, a counter weight is arranged at the position, close to the supporting column, of the platform body, and the platform body is composed of steel box girders. Connecting beams are arranged between part of the supporting columns. According to the utility model, the structural modeling is simple and light, the influence on natural landscapes is reduced, meanwhile, the structural plane modeling can be asymmetrically arranged in a variable-width manner, a large-diameter reserved hole can be formed for arranging a glass platform, and the selection range of the appearance modeling is wider.

Description

Technical Field

[0001] The utility model relates to the technical field of cantilever platforms, in particular to a cantilever platform for a mountain forest trail. Background Art

[0002] The construction of forest trails provides citizens with a simple, economical and safe form of leisure and sports, reflecting good ecological value, cultural value, economic value and use value. The construction of forest trails focuses on ecological protection, energy conservation and emission reduction, allowing tourists to get close to nature and feel nature. The cantilevered viewing platform can protect the native vegetation below the platform while providing a broad view and beautiful scenery, reducing the impact on the ecology during the construction process, and is a good way to create landscape nodes.

[0003] In the prior art, steel truss structure widened cantilever platform and cable-stayed structure widened cantilever platform are cantilever platform structures frequently used in trails:

[0004] 1. Steel truss structure widened cantilever platform The cantilever platform is built with a spatial steel truss structure. The center height of the truss changes linearly from high to low from the root of the cantilever to the end of the cantilever. The top width of the truss upper chord is wider, and the bottom width of the truss lower chord is narrower. The main chords are connected by vertical and transverse webs. The widening of the bridge deck is achieved by changing the width of the cantilevered beams on both sides. The truss cross section often forms an inverted trapezoid. The steel truss rods are usually round steel pipes or square steel pipes, and I-beams can also be used. Pavement and keels required for paving are set on the steel truss.

[0005] The structure has the following shortcomings: due to the stress characteristics of the steel truss structure itself, the height of the structure is relatively large under the same span, which is more abrupt in the natural landscape; the integrity of the steel truss structure is poor, and its adaptability to natural disasters such as earthquakes is relatively insufficient; the rods are exposed to the air for a long time, are polluted by the atmosphere, are easily corroded, and have poor durability; there are a large number of connection nodes between the rods, and under the action of fatigue loads during operation, the nodes are prone to damage or failure, and the maintenance cost is high; the steel truss structure has high requirements for component precision, and the on-site assembly of each rod is large. It is easily affected by external forces such as wind and vibration during construction. Limited by its own stress mode, the steel truss structure is often a symmetrical structure with fewer choices for appearance.

[0006] 2. The cantilever platform is built with a cable-stayed structure. Its main structure includes: cable tower, cable, steel longitudinal and transverse beam system, and anchor structure. One end of the longitudinal main beam is anchored or overlapped at the cable tower cross beam, and the other end is cantilevered. One end of the cable holds the cantilevered end of the longitudinal main beam, and the other end passes through the tower body or the saddle at the top of the tower and is consolidated with the anchor structure. Cross beams and longitudinal secondary beams are set between the longitudinal main beams to form a frame, on which paving and the keel required for paving are set.

[0007] The structure has the following shortcomings: the cable-stayed structure is a flexible structure, which is sensitive to human-induced vibrations, and often has certain vertical and lateral vibrations, making it difficult to ensure pedestrian comfort; it is sensitive to wind-induced vibrations, and its wind resistance analysis is relatively complex, and generally needs to be verified through a wind tunnel test model; the nonlinear effects such as the sag effect of the cable, the large deformation effect of the structure, and the combined effect of the bending moment and axial force are prominent, and the calculation is relatively complex; the cable-stayed structure has extremely strict requirements for the control of the construction line type, and the construction is easily affected by interference factors such as wind, sunshine, gravity, and temperature changes, causing the structure to swing or twist. During the construction process, the stress of the main tower and cables need to be monitored in real time and adjusted according to the design calculation parameters. The structural force analysis of the cable tower anchorage area and the cable beam anchorage area is complex, especially under the action of fatigue loads, the safety verification of the cable anchor is difficult, etc. Limited by its own force mode, the cable-stayed structure is often a symmetrical structure with relatively few choices for appearance. Summary of the invention

[0008] The utility model aims to provide a cantilever platform for a mountain forest trail, so as to solve the problems of complex structure and great construction difficulty of the existing cantilever viewing platform.

[0009] To achieve the above-mentioned purpose, the utility model discloses a cantilever platform for a forest trail, comprising: a platform body and support columns, the platform body adopts a cantilever structure, the platform body is fixedly connected to the support columns, a counterweight is arranged at a position of the platform body near the support columns, the platform body is composed of a steel box beam, and connecting beams are arranged between some of the support columns.

[0010] Preferably, the platform body includes a connecting portion connected to the support column and a suspended viewing portion, the connecting portion is rectangular in plan shape, the viewing portion is circular in plan shape, the connecting portion and the viewing portion are transitioned by a smooth curved surface, and a viewing hole is opened in the middle of the viewing portion.

[0011] Preferably, the concentric circle openings are enclosed by steel box beams, and the side walls of the concentric circle openings are surrounded and fixedly connected with a stiffening support steel plate, an annular support steel plate is arranged on the stiffening support steel plate, and tempered glass is arranged on the annular support steel plate.

[0012] Preferably, the steel box girder is formed by a top plate, a floor plate and web plates on both sides, and longitudinal stiffening ribs are arranged on the top plate, the bottom plate and the web plates of the steel box girder. A cross diaphragm connecting each side wall is arranged inside the steel box girder, and the cross diaphragm includes a support cross diaphragm and an inter-span cross diaphragm. The support cross diaphragm is arranged on the top of the pier, and the inter-span cross diaphragm is used at the remaining positions.

[0013] Preferably, the platform is composed of a plurality of steel box girders arranged in parallel according to design requirements, and inter-span diaphragms are provided between the steel box girders arranged in parallel.

[0014] Preferably, the spacing between the transverse partitions is 100~125cm.

[0015] Preferably, the spacing between the longitudinal stiffening ribs is 20-35 cm.

[0016] Preferably, the height of the steel box girder is 1 m, the thickness of the top plate and the bottom plate is 16-20 mm, and the thickness of the web is 16 mm.

[0017] Preferably, the counterweight is weighted iron sand concrete.

[0018] Preferably, the support column includes a pier and a pile foundation, and the pier is fixedly connected to the top of the pile foundation; the connecting beam includes an inter-pile transverse tie beam and an inter-pier transverse tie beam, and the inter-pile transverse tie beam is arranged on the top of the two pile foundations, and the inter-pier transverse tie beam is arranged at 0.4~0.6 times the pier height of the two piers.

[0019] Preferably, the pier column includes a cylindrical steel plate, a pier bottom steel plate, a pier top steel plate, a stiffening plate and a stiffening boot plate. The top end of the cylindrical steel plate is fixedly connected to the pier top steel plate, the bottom end of the cylindrical steel plate is fixedly connected to the pier bottom steel plate, and the stiffening boot plate is arranged around the top outer wall and the bottom outer wall of the cylindrical steel plate. One end of the stiffening boot plate located at the top of the cylindrical steel plate is fixedly connected to the pier top steel plate, and the other end is fixedly connected to the cylindrical steel plate; one end of the stiffening boot plate located at the bottom of the cylindrical steel plate is fixedly connected to the pier bottom steel plate, and the other end is fixedly connected to the cylindrical steel plate; the stiffening plate is vertically fixedly connected to the inner walls at both ends of the cylindrical steel plate.

[0020] Preferably, the diameter of the pier top steel plate is 10 cm larger than that of the cylindrical steel plate, and vibration holes and ventilation holes are opened on the pier top steel plate; the diameter of the pier bottom steel plate is 25 cm larger than that of the cylindrical steel plate, and a plurality of anchor holes are evenly distributed on the edge of the pier bottom steel plate.

[0021] Preferably, the top of the pile foundation is provided with an embedded steel plate, a column foot anchor bolt and a shear key, the column foot anchor bolt cooperates with the anchor bolt hole, and the pier column is connected to the pile foundation through the column foot anchor bolt and the shear key.

[0022] Preferably, the cylindrical steel plate is filled with concrete, and the pile foundation is a reinforced concrete structure.

[0023] Preferably, the cross-section of the stiffening plate is in a tic-tac-toe shape.

[0024] The utility model has the following beneficial effects:

[0025] 1. The structure of the utility model is simple and light, which reduces the impact on the natural landscape, reduces artificial traces, integrates the viewing platform with the mountains and forests, and achieves a better landscape effect. At the same time, the structural plane shape can realize an asymmetric variable width arrangement, and large-diameter reserved holes can be set to set up a glass platform, which has a wider range of exterior shape choices.

[0026] 2. The steel box girder structure has good integrity and high rigidity, and has good tolerance to human-induced vibration, wind-induced vibration, and earthquakes.

[0027] 3. The structural form has simple and clear force, low design and calculation difficulty, and high reliability.

[0028] 4. The steel box girder structure has strong corrosion resistance and good durability, with less maintenance workload and low maintenance cost during operation.

[0029] 5. According to the site conditions, the construction method of "dividing into sections, prefabrication in the factory, and assembly on site" can be adopted to ensure the construction quality, reduce the construction difficulty, and shorten the construction period;

[0030] 6. The structural system is simple and can be constructed in one go, with less system conversion and only regular inspections required during the operation period. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure provided in a specific embodiment of the utility model;

[0032] Figure 2 It is a schematic diagram of the plane structure of the steel box girder of the platform body provided in a specific embodiment of the utility model;

[0033] Figure 3 It is a schematic diagram of the plane structure of the steel box girder of the platform body provided in a specific embodiment of the utility model;

[0034] Figure 4 This is a schematic diagram of the cross-sectional structure of a steel box beam at a support column provided in a specific embodiment of the utility model;

[0035] Figure 5 A schematic diagram of the cross-sectional structure of a steel box girder at a viewing hole provided in a specific embodiment of the utility model;

[0036] Figure 6 A schematic diagram of the vertical structure of a pier column provided in a specific embodiment of the utility model;

[0037] Figure 7 A schematic diagram of the top surface structure of a pier provided in a specific embodiment of the utility model;

[0038] Figure 8 The specific embodiment of the present invention provides Figure 6 Schematic cross-sectional view of AA.

[0039] Main component symbols:

[0040] 100, platform body; 110, connection part; 111, counterweight; 120, viewing part; 121, viewing hole; 122, annular support steel plate; 123, stiffening support steel plate; 124, tempered glass; 130, curved surface; 131, web plate; 132, fulcrum diaphragm; 133, span diaphragm; 134, top plate; 135, bottom plate; 136, longitudinal stiffening Rib; 200, supporting column; 210, pile foundation; 211, horizontal tie beam between piles; 212, embedded steel plate; 213, column foot anchor bolt; 214, shear key; 220, pier column; 221, horizontal tie beam between piers; 222, pier top steel plate; 223, stiffening boot plate; 224, stiffening plate; 225, cylindrical steel plate; 226, vibrating hole; 227, vent hole; 228, anchor bolt hole. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0042] like Figures 1 to 8 As shown, the utility model provides a cantilever platform for a mountain forest trail, including: a platform body 100 and a support column 200. The platform body 100 adopts a cantilever structure. The platform body 100 is fixedly connected to the support column 200. A counterweight 111 is arranged near the support column 200 of the platform body 100. The platform body 100 is composed of a steel box beam. A connecting beam is arranged between some of the support columns 200. In this embodiment, a total of four support columns 200 are arranged, two of which are distributed along the length direction of the platform body 100 in a group. The connecting beam connects two support columns 200 in the same group. The connecting beam serves to increase the overall rigidity of the foundation and reduce uneven settlement. The counterweight 111 is a weighted iron sand concrete, which is poured in a certain range before and after the connection point between the steel box beam and the support column 200.

[0043] The platform body 100 includes a connecting portion 110 connected to the support column 200 and a suspended viewing portion 120. The connecting portion 110 is rectangular in plan, and the viewing portion 120 is circular in plan. The connecting portion 110 and the viewing portion 120 are transitioned by a smooth curved surface 130, and a viewing hole 121 is provided in the middle of the viewing portion 120. In this embodiment, the planar shape of the platform body 100 is approximately a combination of a rectangle and a circle, the circle is close to a wide side of the rectangle, the diameter of the circle is greater than the width of the rectangle, one side of the circle is tangent to a long side of the rectangle, the other long side of the rectangle is replaced by an arc, the arc is tangent to the other side of the circle, the circular part is provided with a concentric circle opening, the rectangular part is fixedly connected to the support column 200, and the circular part is suspended. In other embodiments, the planar shape of the platform body 100 may also be a symmetrical figure.

[0044] In this embodiment, the platform body 100 is an asymmetric structure. The platform body 100 is surrounded by circles of steel box beams from the inside to the outside, and is surrounded by steel box beams at the viewing hole 121. The side walls of the viewing hole 121 are surrounded and fixedly connected with a stiffening support steel plate 123, and an annular support steel plate 122 is arranged on the stiffening support steel plate 123. Multi-layer tempered glass 124 is arranged on the annular support steel plate 122 to ensure safety.

[0045] The steel box girder is surrounded by a top plate 134, a floor and webs 131 on both sides. The top plate 134, the bottom plate 135 and the webs 131 of the steel box girder are all provided with longitudinal stiffening ribs 136. In this embodiment, the spacing of the longitudinal stiffening ribs 136 is 20-35 cm, the thickness of the top plate 134 and the bottom plate 135 is 16-20 mm, the thickness of the web 131 is 16 mm, the top plate 134 and the bottom plate 135 are all connected to the web 131 by full penetration welding, the top plate 134, the bottom plate 135 and the web 131 are all connected to the support cross diaphragm 132 by full penetration welding, and the top plate 134, the bottom plate 135 and the web 131 are all connected to the longitudinal stiffening ribs 136 by fillet welding.

[0046] A diaphragm connecting each side wall is provided in the steel box girder, and the diaphragm includes a support diaphragm 132 and an inter-span diaphragm 133. The support diaphragm 132 is arranged on the top of the pier 220. The platform is composed of multiple steel box girders arranged in parallel according to design requirements. The inter-span diaphragms 133 are arranged between the parallel steel box girders. In this embodiment, the height of the steel box girder is 1m, and the spacing between the diaphragms is 100~125cm. The inter-span diaphragms 133 connect different steel box girders to make different steel box girders into a whole. The top plate 134, the bottom plate 135, and the web plate 131 are all connected to the inter-span diaphragm 133 by corner welding. Through the above welding, each steel plate part forms a whole to form a steel box girder.

[0047] The support column 200 includes a pier column 220 and a pile foundation 210, and the pier column 220 is fixedly connected to the top of the pile foundation 210; the connecting beam includes an inter-pile transverse tie beam 211 and an inter-pier transverse tie beam 221, and the inter-pile transverse tie beam 211 is arranged at the top of the two pile foundations 210, and the inter-pier transverse tie beam 221 is arranged at 0.4~0.6 times the pier height of the two pier columns 220.

[0048] The pier column 220 includes a cylindrical steel plate 225, a pier bottom steel plate, a pier top steel plate 222, a stiffening plate 224 and a stiffening shoe plate 223. The top of the cylindrical steel plate 225 is fixedly connected to the pier top steel plate 222, the bottom of the cylindrical steel plate 225 is fixedly connected to the pier bottom steel plate, and the stiffening shoe plate 223 is arranged around the top outer wall and the bottom outer wall of the cylindrical steel plate 225. One end of the stiffening shoe plate 223 located at the top of the cylindrical steel plate 225 is fixedly connected to the pier top steel plate 222, and the other end is fixedly connected to the cylindrical steel plate 225; one end of the stiffening shoe plate 223 located at the bottom of the cylindrical steel plate 225 is fixedly connected to the pier bottom steel plate , and the other end is fixedly connected to the cylindrical steel plate 225; the stiffening plate 224 is vertically fixedly connected to the inner wall at both ends of the cylindrical steel plate 225. In this embodiment, the diameter of the pier top steel plate 222 is 10 cm larger than that of the cylindrical steel plate 225, and a vibrating hole 226 and a vent hole 227 are provided on the pier top steel plate 222; the diameter of the pier bottom steel plate is 25 cm larger than that of the cylindrical steel plate 225, and a plurality of anchor holes 228 are evenly distributed on the edge of the pier bottom steel plate. The pier top is provided with a stiffening shoe plate 223 in a circular manner at a 15° interval, and the stiffening shoe plate 223 is fixedly connected to the pier top steel plate 222 and the cylindrical steel plate 225 by fillet welding. The pier bottom is provided with a stiffening shoe plate 223 in a circular manner at a 15° interval, and the stiffening shoe plate 223 is fixedly connected to the cylindrical steel plate 225 and the pier bottom steel plate by fillet welding. The pier top and the pier bottom are provided with a cross-shaped stiffening plate 224 within a certain range to strengthen the structural strength of the pier column 220.

[0049] The cylindrical steel plate 225 is filled with concrete, and the pile foundation 210 is a reinforced concrete structure. The top of the pile foundation 210 is provided with an embedded steel plate 212, a column foot anchor bolt 213 and a shear key 214. The column foot anchor bolt 213 cooperates with the anchor bolt hole 228, and the pier column 220 is connected to the pile foundation 210 through the column foot anchor bolt 213 and the shear key 214.

[0050] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A cantilever platform for a forest trail, characterized in that: include: The platform body and the support columns, the platform body adopts a cantilever structure, the platform body is fixedly connected to the support columns, a counterweight is arranged near the support columns of the platform body, the platform body is composed of a steel box beam, and connecting beams are arranged between some of the support columns.

2. The cantilever platform for a forest trail according to claim 1, characterized in that: The platform body comprises a connecting portion connected to a supporting column and a suspended viewing portion, wherein the connecting portion is rectangular in plan shape, and the viewing portion is circular in plan shape, and a smooth curved surface transition is provided between the connecting portion and the viewing portion, and a viewing hole is provided in the middle of the viewing portion.

3. The cantilever platform for a forest trail according to claim 2 is characterized by: The viewing hole is enclosed by a steel box beam, and a stiffening support steel plate is fixedly connected around the side wall of the viewing hole. An annular support steel plate is arranged on the stiffening support steel plate, and tempered glass is arranged on the annular support steel plate.

4. The cantilever platform for a mountain forest trail according to claim 1, characterized in that: The steel box girder is formed by a top plate, a floor plate and web plates on both sides. The top plate, the bottom plate and the web plates of the steel box girder are all provided with longitudinal stiffening ribs. A cross diaphragm connecting each side wall is provided inside the steel box girder. The cross diaphragm includes a support cross diaphragm and an inter-span cross diaphragm. The support cross diaphragm is arranged on the top of the pier, and the inter-span cross diaphragm is used at the remaining positions.

5. The cantilever platform for a forest trail according to claim 4 is characterized by: The platform is composed of a plurality of steel box girders arranged in parallel according to design requirements, and inter-span transverse partitions are arranged between the steel box girders arranged in parallel.

6. The cantilever platform for a forest trail according to claim 5, characterized in that: The spacing between the transverse partitions is 100-125 cm.

7. The cantilever platform for a forest trail according to claim 4 is characterized by: The spacing between the longitudinal stiffening ribs is 20-35 cm.

8. The cantilever platform for a forest trail according to claim 4 is characterized by: The height of the steel box girder is 1m, the thickness of the top plate and the bottom plate is variable from 16 to 20mm, and the thickness of the web is 16mm.

9. The cantilever platform for a forest trail according to claim 1, characterized in that: The counterweight is heavy iron sand concrete.

10. The cantilever platform for a forest trail according to claim 1, characterized in that: The support column includes a pier column and a pile foundation, and the pier column is fixedly connected to the top of the pile foundation; the connecting beam includes a cross-beam between piles and a cross-beam between piers, and the cross-beam between piles is arranged at the top of the two pile foundations, and the cross-beam between piers is arranged at 0.4 to 0.6 times the pier height of the two pier columns.

11. The cantilever platform for a forest trail according to claim 10, characterized in that: The pier column includes a cylindrical steel plate, a pier bottom steel plate, a pier top steel plate, a stiffening plate and a stiffening shoe plate. The top end of the cylindrical steel plate is fixedly connected to the pier top steel plate, the bottom end of the cylindrical steel plate is fixedly connected to the pier bottom steel plate, and the stiffening shoe plate is arranged around the top outer wall and the bottom outer wall of the cylindrical steel plate. One end of the stiffening shoe plate located at the top of the cylindrical steel plate is fixedly connected to the pier top steel plate, and the other end is fixedly connected to the cylindrical steel plate; one end of the stiffening shoe plate located at the bottom of the cylindrical steel plate is fixedly connected to the pier bottom steel plate, and the other end is fixedly connected to the cylindrical steel plate; the stiffening plate is vertically fixedly connected to the inner walls at both ends of the cylindrical steel plate.

12. The cantilever platform for a forest trail according to claim 11, characterized in that: The diameter of the pier top steel plate is 10 cm larger than that of the cylindrical steel plate, and a vibration hole and a vent hole are opened on the pier top steel plate; the diameter of the pier bottom steel plate is 25 cm larger than that of the cylindrical steel plate, and a plurality of anchor holes are evenly distributed on the edge of the pier bottom steel plate.

13. The cantilever platform for a forest trail according to claim 12, characterized in that: The top of the pile foundation is provided with an embedded steel plate, a column foot anchor bolt and a shear key, the column foot anchor bolt matches the anchor bolt hole, and the pier column is connected to the pile foundation through the column foot anchor bolt and the shear key.

14. The cantilever platform for a forest trail according to claim 13, characterized in that: The cylindrical steel plate is filled with concrete, and the pile foundation is a reinforced concrete structure.

15. The cantilever platform for a forest trail according to claim 11, characterized in that: The cross section of the stiffening plate is in a well shape.

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