Large-span flexible inhaul cable supporting structure suitable for stockyard windproof dust suppression net

Abstract

A large-span flexible inhaul cable supporting structure suitable for a stockyard windproof dust suppression net comprises truss columns, arc-shaped windproof inhaul cables, top suspension cables and slings. The arc-shaped wind-resistant inhaul cable and the top suspension cable are transversely connected between the two truss columns respectively; the top suspension cables and the arc-shaped wind-resistant inhaul cables are connected through vertical slings, and every two adjacent layers of arc-shaped wind-resistant inhaul cables are connected through vertical slings. The device is large in span and wide in coverage range, the number of supporting columns is reduced, and the coverage area is enlarged; the wind resistance, shock resistance and deformation resistance are higher, the load impact of extreme weather (such as typhoon and snowstorm) can be resisted, and the long-term stability is superior to that of a traditional structure; the space utilization rate is high, and the site use efficiency is improved; the dustproof screen cloth is short in construction period, convenient to maintain and low in maintenance cost, and the dustproof screen cloth can be independently replaced.

Description

(I)TECHNICAL FIELD

[0001] The present application belongs to the field of industry and environmental protection, and relates to a dust prevention technology for a dry material yard, in particular to a large-span flexible cable supporting structure suitable for a wind-prevention and dust-suppression net for a material yard. (II)BACKGROUND

[0002] At present, the world port terminal yard as the core hub of global supply chain, its importance has surpassed the traditional warehousing function, become the strategic node of supporting international trade, promoting economic growth, linking multimodal transport, responding to environmental challenges. But some bulk cargo yards of the wharf are prone to cause dust and other air pollution problems, one of the core impacts on the urban environment is the complex air pollution, which threatens the urban air quality through the synergistic effect of multiple pollutants, and has adverse effects on the urban environment. At present, for the large bulk cargo yard or open coal storage yard of the port terminal, the traditional wind-prevention and dust-suppression net or the construction of a closed shed is generally used to reduce its pollution to the air.

[0003] The traditional wind-prevention and dust-suppression net structure has a small span, and more connecting points and fixing devices are needed to install the dust-suppression net, which increases the complexity and workload of installation. Due to the small span, more supporting structures are needed to maintain the shape and stability of the dust-suppression net. If the supporting structures are not properly arranged or insufficient, the dust-suppression net is more likely to deform, loosen or even tear when subjected to external forces such as wind. And the small-span dust-suppression net will have more joint gaps when covering the same area, which may become a channel for dust leakage, reducing the overall dust prevention effect and failing to effectively block the diffusion of dust. The small-span arranged dust-suppression net also has the problem of inconvenience for large-scale operation equipment to enter and exit.

[0004] The large-span flexible wind-prevention and dust-suppression net supporting structure is proposed to solve the above problems, which has the characteristics of more coverage area, fewer supporting columns, convenient construction, and more optimal cost. Because the flexible structure can deform with the wind, stress concentration is reduced, and the durability and wind resistance are better than the traditional dust-suppression net. (III)SUMMARY

[0005] The purpose of the present application is to provide a large-span flexible cable supporting structure suitable for a wind-prevention and dust-suppression net for a material yard, which can solve the problems of the prior art, solve the problem of small span of the traditional wind-prevention and dust-suppression net which is not conducive to the entry and exit of large-scale mechanical equipment for construction work in the material yard, and can improve the space utilization, reduce the number of columns and release the ground space.

[0006] To achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0007] A large-span flexible cable support structure suitable for windbreak and dust suppression nets in material yards includes truss columns, arc-shaped wind-resistant cables, top suspension cables, and suspenders; the arc-shaped wind-resistant cables and top suspension cables are respectively horizontally connected between two truss columns; the top suspension cables and arc-shaped wind-resistant cables, as well as adjacent layers of arc-shaped wind-resistant cables, are connected by vertical suspenders.

[0008] The truss column includes vertical chords, horizontal web members, diagonal web members, and cross connecting members. The bottom of the vertical chords is connected to the anchor foundation. The horizontal web members are welded to the vertical chords to form several rectangular frames. The diagonal web members are welded to the longitudinal rectangular frames to form a stable triangular structure, which increases the stability of the truss column. The cross connecting members are welded to the horizontal rectangular frames to form a stable triangular structure, which also increases the stability of the truss column.

[0009] The cross-shaped connecting rod is installed on the diagonal of the horizontal rectangular frame in the truss column.

[0010] The diagonal bracing forms a herringbone support from the corners on both sides of the longitudinal rectangular frame to the midpoint on the opposite side.

[0011] The cross-shaped connecting rods are installed along the diagonal of the rectangular frame on the first, third, fifth, seventh, ninth, eleventh, and thirteenth layers of the truss.

[0012] The vertical chord members, horizontal web members, diagonal web members, and cross connecting rods are all made of circular steel pipes.

[0013] The curvature of the arc-shaped wind-resistant cable is initially selected based on the distance L between the two truss columns and the width b2 of the truss column. The sag f of the arc-shaped cable is then calculated using finite element software to determine the tension, stress distribution, and cooperative stress distribution with the main structure of the cable. This verifies that the curvature of the arc-shaped cable meets the requirements for tensile strength, fatigue resistance, and wind load dispersion. The sag f of the arc-shaped cable is less than half the width b2 of the truss column.

[0014] The arc-shaped wind-resistant cable is divided into a front arc-shaped wind-resistant cable and a rear arc-shaped wind-resistant cable, which are connected by a connecting rod.

[0015] The connection between the end of the arc-shaped wind-resistant cable and the truss column is a rotatable connection.

[0016] The truss column is provided with ear plate I, and the end of the arc-shaped wind-resistant cable is connected to the ear plate I on the truss column by a pin. The end of the arc-shaped wind-resistant cable can rotate in the horizontal direction.

[0017] The ear plate I is arranged horizontally and is fixedly connected to the outer sleeve I on the truss column; the outer sleeve I is fixedly connected to the vertical chord of the truss column.

[0018] The ear plate I is welded onto the outer sleeve I; the outer sleeve I is welded to the vertical chord of the truss column by means of two circumferential fillet welds I, two vertical welds I and several through-hole plug welds I.

[0019] A reinforcing rib I is provided between the ear plate I and the outer sleeve I for enhanced connection.

[0020] The connection between the end of the top suspension cable and the truss column is a rotatable connection.

[0021] The truss column is provided with ear plate II, and the end of the top suspension cable is connected to the ear plate II on the truss column by a pin. The end of the top suspension cable can rotate in the vertical direction.

[0022] The ear plate II is arranged vertically and is fixedly connected to the outer sleeve II on the truss column; the outer sleeve II is fixedly connected to the vertical chord of the truss column.

[0023] The ear plate II is welded to the outer sleeve II; the outer sleeve II is welded to the vertical chord of the truss column by means of two circumferential fillet welds II, two vertical welds II and several through-hole plug welds II.

[0024] A reinforcing rib II is provided between the ear plate II and the outer sleeve II for enhanced connection.

[0025] The arc-shaped wind-resistant cable includes a bottom arc-shaped wind-resistant cable, a middle arc-shaped wind-resistant cable, and a top arc-shaped wind-resistant cable; the suspension cable connects the arc-shaped wind-resistant cables of adjacent two layers; the top suspension cable is connected to the top arc-shaped wind-resistant cable through the suspension cable.

[0026] The bottom layer of curved wind-resistant cables is divided into a front bottom layer curved wind-resistant cable and a rear bottom layer curved wind-resistant cable; the middle layer of curved wind-resistant cables is divided into a front middle layer curved wind-resistant cable and a rear middle layer curved wind-resistant cable; the top layer of curved wind-resistant cables is divided into a front top layer curved wind-resistant cable and a rear top layer curved wind-resistant cable; the top suspension cable is divided into a front top suspension cable and a rear top suspension cable; the front and rear curved wind-resistant cables and the top suspension cable are connected by connecting rods.

[0027] The slings are fixed with windproof and dust-suppressing nets.

[0028] The top suspension cable bears the vertical load of the curved wind-resistant cable and the dustproof net.

[0029] The curved wind-resistant cables are vertically supported by top suspension cables to prevent sagging. The bottom, middle, and top curved wind-resistant cables are all installed in both front and rear directions. This layout aims to provide effective horizontal tension against strong winds from both directions, enhancing the overall wind resistance of the structure. The cables are designed with a specific curvature; based on aerodynamic principles, this curvature effectively disperses wind force through proper mechanical transmission under strong winds, significantly improving wind resistance compared to straight cables. The slings have a dual function: firstly, they are used to install dust nets, ensuring the working environment meets relevant dust control requirements; secondly, they suspend the wind-resistant cables, optimizing the structural stress state. Throughout the cable system, the front and rear sections are securely connected by a central connecting rod, ensuring effective operation of both sections under conditions of strong winds from both directions, transmitting and bearing wind loads from both sides, and maintaining the stability and integrity of the system.

[0030] Furthermore, the cables are arranged in a crisscross pattern. The bottom layer of the truss column has a bottom layer of curved wind-resistant cables, the fifth and seventh layers have middle layer curved wind-resistant cables, and the tenth layer has a top layer of curved wind-resistant cables as horizontal load-bearing cables. The twelfth layer has a top suspension cable as a vertical load-bearing cable, and slings are installed between adjacent layers of curved wind-resistant cables to support the weight of the curved wind-resistant cables while installing dustproof nets. The two parts are then connected into a whole by connecting rods.

[0031] The beneficial effects that this invention can achieve are:

[0032] (1) It has a large span and a wide coverage area, which reduces the number of support columns and expands the coverage area. It is especially suitable for dust prevention needs in large open areas such as ports, coal mines, and storage yards, and reduces obstacles to operations on site.

[0033] (2) It has high strength and stability. The present invention adopts advanced structural forms such as high-strength steel and space truss and uses flexible cables, which have stronger wind resistance, earthquake resistance and deformation resistance. It can withstand the load impact of extreme weather (such as typhoons and blizzards) and its long-term stability is better than that of traditional structures. The cables are designed with a specific curvature. Based on the principle of aerodynamics, this curvature structure can effectively disperse wind force through reasonable mechanical transmission under strong wind. Compared with straight cables, it can significantly improve wind resistance.

[0034] (3) High space utilization, reducing the number of columns, freeing up ground space, and facilitating the free operation of large machinery (such as stacker-reclaimers and trucks) within the coverage area, thereby improving site utilization efficiency.

[0035] (4) Short construction period: The construction mode of factory prefabrication + on-site assembly greatly shortens the construction period, which is especially suitable for environmental protection projects that need to be put into production quickly. Moreover, maintenance is convenient. Damage points in the steel structure are easy to detect, and local replacement or repair does not affect the overall structure; the dustproof netting (such as high-density polyethylene) can be replaced separately, and the maintenance cost is low. (iv) Description of the attached drawings:

[0036] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0037] Figure 1 This is an isometric schematic diagram of a large-span flexible cable support structure applicable to windbreak and dust suppression nets in material yards, as described in this invention.

[0038] Figure 2 This is a front elevation view of a large-span flexible cable support structure for windbreak and dust suppression netting in material yards, as described in this invention.

[0039] Figure 3 yes Figure 2 AA cross-section view.

[0040] Figure 4 yes Figure 2 BB cross-section.

[0041] Figure 5 yes Figure 2 CC cross-section view.

[0042] Figure 6-1 , Figure 6-2 This is a schematic diagram showing the connection between the vertical chord of the truss column and the end of the arc-shaped wind-resistant cable in a large-span flexible cable support structure for windbreak and dust suppression netting in a material yard.

[0043] Figure 7-1 , Figure 7-2 This is a schematic diagram showing the connection between the vertical chord of the truss column and the top suspension cable in a large-span flexible cable-stayed support structure for a material yard windbreak and dust suppression net.

[0044] Figure 8 This is a schematic diagram of the truss column in a large-span flexible cable support structure applicable to windbreak and dust suppression nets in material yards, as described in this invention. (V) Specific Implementation Methods:

[0045] To facilitate understanding of the present invention, a more comprehensive and detailed description of the present invention will be provided below in conjunction with the accompanying drawings. However, the scope of protection of the present invention is not limited to the specific embodiments described below.

[0046] like Figures 1-8 As shown, a large-span flexible cable support structure suitable for windbreak and dust suppression nets in material yards includes truss columns 1, arc-shaped wind-resistant cables, top suspension cables 6, and suspenders 7; the arc-shaped wind-resistant cables and the top suspension cables 6 are respectively horizontally connected between two truss columns 1; the top suspension cables and the arc-shaped wind-resistant cables, as well as the two adjacent layers of arc-shaped wind-resistant cables, are connected by vertical suspenders 7.

[0047] The truss column 1 includes a vertical chord member 1-1, a horizontal web member 1-2, a diagonal web member 1-3, and a cross-connecting member 1-4; as shown... Figure 1 , Figure 2 As shown, the bottom of the vertical chord member 1-1 is connected to the anchor foundation 2. The horizontal web members 1-2 are welded to the vertical chord member to form several rectangular frames. The diagonal web members 1-3 are welded to the longitudinal rectangular frames to form a stable triangular structure to increase the stability of the truss column. The cross connecting rod 1-4 is welded to the horizontal rectangular frame to form a stable triangular structure to increase the stability of the truss column.

[0048] The cross connecting rods 1-4 are arranged on the diagonal of the horizontal rectangular frame in the truss column 1.

[0049] The diagonal bracing 1-3 forms a herringbone support from the corners on both sides of the longitudinal rectangular frame to the midpoint on the opposite side.

[0050] The cross connecting rods 1-4 are installed along the diagonal of the rectangular frame on the first, third, fifth, seventh, ninth, eleventh and thirteenth layers of the truss 1.

[0051] The vertical chord 1-1, horizontal web member 1-2, diagonal web member 1-3, and cross connecting member 1-4 are all circular steel pipes.

[0052] The curvature of the arc-shaped wind-resistant cable is initially selected based on the distance L between the two truss columns 1 and the width b2 of the truss column 1. The sag f of the arc-shaped cable is then calculated using finite element software to determine the tension, stress distribution, and cooperative stress distribution with the main structure of the cable. This verifies that the curvature of the arc-shaped cable meets the requirements for tensile strength, fatigue resistance, and wind load dispersion. The sag f of the arc-shaped cable is less than half the width b2 of the truss column 1.

[0053] The arc-shaped wind-resistant cable is divided into a front arc-shaped wind-resistant cable and a rear arc-shaped wind-resistant cable, which are connected by a connecting rod 8.

[0054] The connection between the end of the arc-shaped wind-resistant cable and the truss column 1 is a rotatable connection.

[0055] The truss column 1 is provided with ear plates I 1-6a, and the end of the arc-shaped wind-resistant cable is connected to the ear plates I 1-6a on the truss column 1 by a pin. The end of the arc-shaped wind-resistant cable can rotate in the horizontal direction.

[0056] The ear plates I 1-6a are arranged horizontally and are fixedly connected to the outer sleeve I 1-5a on the truss column 1; the outer sleeve I 1-5a is fixedly connected to the vertical chord 1-1 of the truss column.

[0057] The ear plate I 1-6a is welded to the outer sleeve I 1-5a; the outer sleeve I 1-5a is welded to the vertical chord 1-1 of the truss column by means of two circumferential fillet welds I 1-8a, two vertical welds I 1-9a and several through-hole plug welds I 1-10a.

[0058] The ear plate I 1-6a and the outer sleeve I 1-5a are reinforced by stiffening ribs I 1-7a.

[0059] The connection between the end of the top suspension cable and the truss column 1 is a rotatable connection.

[0060] The truss column 1 is provided with ear plate II 1-6b, and the end of the top suspension cable is connected to the ear plate II 1-6b on the truss column 1 by a pin. The end of the top suspension cable can rotate in the vertical direction.

[0061] The ear plate II 1-6b is arranged vertically and is fixedly connected to the outer sleeve II 1-5b on the truss column 1; the outer sleeve II 1-5b is fixedly connected to the vertical chord 1-1 of the truss column.

[0062] The ear plate II 1-6b is welded to the outer sleeve II 1-5b; the outer sleeve II 1-5b is welded to the vertical chord 1-1 of the truss column by means of two circumferential fillet welds II 1-8b, two vertical welds II 1-9b and several through-hole plug welds II 1-10b.

[0063] A reinforcing rib II 1-7b is provided between the ear plate II 1-6b and the outer sleeve II 1-5b for enhanced connection.

[0064] The arc-shaped wind-resistant cable includes a bottom arc-shaped wind-resistant cable 3, a middle arc-shaped wind-resistant cable 4, and a top arc-shaped wind-resistant cable 5; the suspension cable 7 connects the arc-shaped wind-resistant cables of adjacent layers; the top suspension cable 6 is connected to the top arc-shaped wind-resistant cable 5 through the suspension cable 7, and the top suspension cable 6 bears the vertical load of the cable structure.

[0065] The bottom layer arc-shaped wind-resistant cable 3 is divided into a front bottom layer arc-shaped wind-resistant cable 3-1 and a rear bottom layer arc-shaped wind-resistant cable 3-2; the middle layer arc-shaped wind-resistant cable 4 is divided into a front middle layer arc-shaped wind-resistant cable 4-1 and a rear middle layer arc-shaped wind-resistant cable 4-2; the top layer arc-shaped wind-resistant cable 5 is divided into a front top layer arc-shaped wind-resistant cable 5-1 and a rear top layer arc-shaped wind-resistant cable 5-2; the top suspension cable 6 is divided into a front top suspension cable 6-1 and a rear top suspension cable 6-2; the front and rear arc-shaped wind-resistant cables and the top suspension cable are connected by connecting rods 8.

[0066] The windproof and dust-suppressing net is fixed on the sling 7.

[0067] The top suspension cable 6 bears the vertical load of the curved wind-resistant cable and the dustproof net.

[0068] Curved wind-resistant cables, such as Figures 1-5 As shown, the top suspension cables provide vertical support to prevent cable sagging. The bottom, middle, and top curved wind-resistant cables are all installed in both front and rear directions. This layout aims to provide effective horizontal tension against strong winds from both directions, enhancing the overall wind resistance of the structure. The cables are designed with a specific curvature; based on aerodynamic principles, this curvature effectively disperses wind force through proper mechanical transmission under strong winds, significantly improving wind resistance compared to straight cables. The slings have a dual function: firstly, they are used to install dust nets, ensuring the working environment meets relevant dust control requirements; secondly, they suspend the wind-resistant cables, optimizing the structural stress state. Throughout the cable system, the front and rear sections are securely connected by a central connecting rod, ensuring effective operation under conditions such as strong winds from both directions, transmitting and bearing wind loads from both sides, and maintaining the stability and integrity of the system.

[0069] Furthermore, the cables are arranged in a crisscross pattern. The bottom layer of the truss column has a bottom layer of curved wind-resistant cables, the fifth and seventh layers have middle layer curved wind-resistant cables, and the tenth layer has a top layer of curved wind-resistant cables as horizontal load-bearing cables. The twelfth layer has a top suspension cable as a vertical load-bearing cable, and slings are installed between adjacent layers of curved wind-resistant cables to support the weight of the curved wind-resistant cables while installing dustproof nets. The two parts are then connected into a whole by connecting rods.

[0070] Although preferred embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the specific embodiments described above. The embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these are within the scope of protection of the present invention.

Claims

1. A large-span flexible cable supporting structure suitable for a wind-preventing and dust-suppressing net of a stockyard, characterized in that It includes truss column, arc wind cable, top suspension cable and sling; the arc wind cable and top suspension cable are respectively connected between two truss columns; the top suspension cable and arc wind cable are connected by vertical sling, and the adjacent two layers of arc wind cables are connected by vertical sling.

2. The large-span flexible cable support structure suitable for the windproof and dust suppression net of the stock ground according to claim 1, characterized in that The truss column includes vertical chord, horizontal web, diagonal web and cross connecting rod; the vertical chord is connected with anchor base, the horizontal web is welded on the vertical chord to form several rectangular frames, the diagonal web is welded in the longitudinal rectangular frame to form stable triangular structure, and the cross connecting rod is welded in the horizontal rectangular frame to form stable triangular structure.

3. The large-span flexible cable support structure suitable for the windproof and dust suppression net of the stock ground according to claim 2, characterized in that The cross connecting rod is arranged on the diagonal line of the horizontal rectangular frame in the truss column; the diagonal web forms herringbone support from the corner point of the longitudinal rectangular frame to the opposite middle point.

4. The large-span flexible cable support structure suitable for the windproof and dust suppression net of the stock ground according to claim 1, characterized in that The connection between the end of the arc wind cable and the truss column is rotatable connection; the connection between the end of the top suspension cable and the truss column is rotatable connection.

5. The large-span flexible cable support structure suitable for the windproof and dust suppression net of the stock ground according to claim 1, characterized in that The ear plate I is arranged on the truss column, the end of the arc wind cable is connected with the ear plate I on the truss column by pin shaft, and the end of the arc wind cable can rotate in horizontal direction; The ear plate I is horizontally arranged and fixedly connected with the outer sleeve I on the truss column; the outer sleeve I is fixedly connected with the vertical chord of the truss column; Stiffening rib I is arranged between the ear plate I and the outer sleeve I for reinforced connection.

6. The large-span flexible cable support structure suitable for the windproof and dust suppression net of the stock ground according to claim 1, characterized in that The ear plate II is arranged on the truss column, the end of the top suspension cable is connected with the ear plate II on the truss column by pin shaft, and the end of the top suspension cable can rotate in vertical direction; The ear plate II is vertically arranged and fixedly connected with the outer sleeve II on the truss column; the outer sleeve II is fixedly connected with the vertical chord of the truss column; Stiffening rib II is arranged between the ear plate II and the outer sleeve II for reinforced connection.

7. The large-span flexible cable support structure suitable for the windproof and dust suppression net of the stock ground according to claim 1, characterized in that The arc wind cable includes front side arc wind cable and rear side arc wind cable, and the front side arc wind cable and the rear side arc wind cable are connected by connecting rod.

8. The large-span flexible cable support structure suitable for the windproof and dust suppression net of the stock ground according to claim 1, characterized in that The arc wind cable includes bottom layer arc wind cable, intermediate layer arc wind cable and top layer arc wind cable; the slings connect the adjacent two layers of arc wind cables; the top suspension cable is connected with the top layer arc wind cable by the slings.

9. The large-span flexible cable support structure suitable for the windproof and dust suppression net of the stock ground according to claim 1, characterized in that The bottom layer arc wind cable includes front side bottom layer arc wind cable and rear side bottom layer arc wind cable; The intermediate layer arc wind cable includes front side intermediate layer arc wind cable and rear side intermediate layer arc wind cable; The top layer arc wind cable includes front side top layer arc wind cable and rear side top layer arc wind cable; the top suspension cable includes front side top suspension cable and rear side top suspension cable; the front side and rear side arc wind cables and top suspension cables are connected by connecting rod.

10. The large-span flexible cable support structure suitable for the windproof and dust suppression net of the stock ground according to claim 1, characterized in that The slings are fixed with windproof and dust suppression nets.

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