Steel frame structure system for mine and construction method thereof

Abstract

The invention provides a steel frame structure system for a mine and a construction method thereof.The steel frame structure system for the mine comprises at least three vertical supporting columns and a plurality of transverse connecting beams, and each supporting column is formed by connecting multiple sections of steel columns from bottom to top; every two adjacent steel columns are connected through a connecting assembly, the connecting beams and the supporting columns are connected through a connecting assembly, and therefore all the supporting columns and all the connecting beams form a steel frame structure system. The connecting assembly comprises a connecting piece, a first limiting piece and a second limiting piece, the first limiting piece and the second limiting piece are arranged on the connecting piece, the outer diameters of the two ends of the connecting piece are matched with the inner diameters of the steel columns, and the connecting piece connects the two adjacent steel columns through the first limiting piece and / or the second limiting piece. And the replacement of the whole rack caused by height adjustment is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of civil engineering and construction, and particularly relates to a steel frame structure system for mines and a construction method thereof. Background Art

[0002] In the mining industry, the stability of underground tunnels is directly related to production safety and efficiency. Steel frame structures are the core components of tunnel support, used to resist surrounding rock pressure and prevent roof collapse. Mine derricks and towers are common infrastructure and are widely used in new construction, renovation, expansion, and reinforcement projects. Given the tight construction cycle in the mining industry, high-speed assembly and construction will generate considerable economic benefits.

[0003] The geological conditions in mine tunnels are complex and ever-changing, and roof height often requires dynamic adjustment during excavation. Traditional steel frames are prefabricated or fixed together in one go, making it difficult to flexibly adapt support heights. Changing support heights often requires replacing the entire support system, resulting in material waste, extended construction schedules, and increased safety risks. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a mine steel frame structure system and a construction method thereof, which are used to solve the technical problems of the above background technology.

[0005] On the one hand, the invention provides the following technical solutions: a steel frame structure system for mines, comprising at least three vertical support columns and multiple transverse connecting beams, each of the support columns being formed by connecting multiple sections of steel columns from bottom to top, and the two adjacent steel columns, and the connecting beams and the support columns being connected via connecting components, so that all the support columns and all the connecting beams form a steel frame structure system; the connecting component comprises a connecting member, and a first limit member and a second limit member arranged on the connecting member, the outer diameters of the two ends of the connecting member being adapted to the inner diameter of the steel column, and the connecting member connecting the two adjacent steel columns via the first limit member and / or the second limit member.

[0006] Compared with the prior art, the beneficial effects of the present invention are as follows: by selecting a connection method using a first limiter, a second limiter or a combination of double limiters, the stable splicing of steel columns at a variety of different heights can be achieved, effectively solving the problem that traditional fixed brackets are difficult to dynamically adapt to changes in tunnel height. This avoids the need to replace the entire frame due to height adjustment, thereby saving material costs and reducing the construction period. In addition, the overall structural design is lightweight and high-strength, with excellent seismic performance. For different heights, the corresponding structural technical solutions can be matched to achieve high-speed assembly and construction. By connecting standardized support parts and splicing parts, modular assembly of mine steel frame structures can be achieved, significantly improving construction efficiency.

[0007] Furthermore, when the steel frame structure system is at a first height: the connecting member connects two adjacent steel columns through the first limiting member;

[0008] When the steel frame structure system is at the second height: the connecting member connects two adjacent steel columns through the second limiting member;

[0009] When the steel frame structure system is at the third height: the connecting member connects two adjacent steel columns through the first limiting member and the second limiting member.

[0010] Furthermore, the first limiting member includes a first mounting hole opened on the connecting member, a second mounting hole opened on the end plate of the steel column, and a fixing bolt passing through the first mounting hole and the second mounting hole.

[0011] Furthermore, the second limiting member includes a first steel strand hole opened in the connecting member, a second steel strand hole opened in the steel column, steel strands and coagulation liquid arranged in the first steel strand hole and the second steel strand hole.

[0012] Furthermore, the connecting member includes a connecting plate and an inner core arranged on both sides of the connecting plate.

[0013] Furthermore, lug plates are symmetrically provided on both sides of the steel frame structure system, and the lug plates are connected to the induction tensioning machine on the ground through cables.

[0014] Furthermore, a plurality of lugs and two cables are arranged on both sides of the same side of the steel frame structure system. The two cables cross through the lugs on both sides from top to bottom and are connected to the induction tensioning machine on the ground.

[0015] Furthermore, the induction tensioning machine is provided with a tension sensing unit; when the cable tension changes by more than a set deviation value, the induction tensioning machine applies additional tension to the cable and limits the position; if the cable tension changes by more than the set deviation value, additional tension is repeatedly applied until the rated value is reached.

[0016] On the other hand, the present invention also provides a construction method for a mine steel frame structure system, the construction method comprising the following steps:

[0017] Based on the target height of the steel frame structure system, select the first limiter and / or the second limiter of the connection assembly to splice the multiple steel columns to form a support column;

[0018] Based on the target structural shape of the steel frame structure system, forming a corresponding number of support columns;

[0019] When the support columns are spliced together, the connecting beam is connected between two adjacent support columns through the connecting pieces of the connecting assembly to form a steel frame structure system;

[0020] Lug plates are provided on the connecting piece, and are connected to the induction tensioning machine via a cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the structure of the mining steel frame system in the first embodiment of the present invention.

[0022] Figure 2 This is a structural diagram of two adjacent steel columns in the connected state according to the first embodiment of the present invention.

[0023] Figure 3 This is the first embodiment of the present invention Figure 2 Top view in .

[0024] Figure 4 This is the first embodiment of the present invention Figure 2 Explosion diagram.

[0025] Figure 5 This is a schematic diagram of two adjacent steel columns connected by a second limiting member according to the first embodiment of the present invention.

[0026] Figure 6 This is a schematic diagram of the mining steel frame structure system in a triangular state according to the first embodiment of the present invention.

[0027] Figure 7 This is a schematic diagram of a mining steel frame structure system in a rectangular state according to the first embodiment of the present invention.

[0028] Figure 8 This is a schematic structural diagram of the cable in another connection state according to the first embodiment of the present invention.

[0029] Figure 9 This is a flow chart of the construction method of the steel frame structure system for mining in the second embodiment of the present invention.

[0030] Explanation of the main component symbols: 10. Support column; 11. Steel column; 111. End plate; 20. Connecting beam; 30. Connecting assembly; 31. Connecting part; 311. Connecting plate; 312. Inner core; 32. First limiting part; 321. First mounting hole; 322. Second mounting hole; 323. Fixing bolt; 33. Second limiting part; 331. First steel strand hole; 332. Second steel strand hole; 333. Steel strand; 34. Stiffening rib; 40. Ear plate; 41. Induction tensioning machine; 42. Cable.

[0031] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0032] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The drawings illustrate several embodiments of the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0033] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0035] See also Figures 1 to 2 As shown, the steel frame structure system for mining in the first embodiment of the present invention includes at least three vertical support columns 10 and multiple transverse connecting beams 20. Each of the support columns 10 is formed by connecting multiple sections of steel columns 11 from bottom to top. The two adjacent steel columns 11 and the connecting beams 20 and the support columns 10 are connected by a connecting assembly 30, so that all the support columns 10 and all the connecting beams 20 form a steel frame structure system; the connecting assembly 30 includes a connecting member 31, and a first limiting member 32 and a second limiting member 33 arranged on the connecting member 31. The outer diameters of the two ends of the connecting member 31 are adapted to the inner diameter of the steel column 11, and the connecting member 31 connects the two adjacent steel columns 11 through the first limiting member 32 and / or the second limiting member 33.

[0036] It is worth noting that by selecting a connection method using the first stopper 32, the second stopper 33, or a combination of both, the steel columns 11 can be stably spliced at various heights, effectively resolving the problem of traditional fixed supports being unable to dynamically adapt to changes in roadway height. This avoids the need to replace the entire frame due to height adjustments, thereby saving material costs and shortening the construction period.

[0037] Furthermore, the overall structural design is lightweight and high-strength, offering excellent seismic resistance. Different structural technical solutions can be tailored to different heights, enabling rapid assembly and construction. Standardized support and connector components enable modular assembly of mining steel structures, significantly improving construction efficiency.

[0038] Optionally, when the steel frame structure system is at the first height: the connecting member 31 connects two adjacent steel columns 11 through the first limiting member 32;

[0039] When the steel frame structure system is at the second height: the connecting member 31 connects the two adjacent steel columns 11 through the second limiting member 33;

[0040] When the steel frame structure system is at the third height, the connecting member 31 connects two adjacent steel columns 11 through the first limiting member 32 and the second limiting member 33 .

[0041] First height (only the first limiter 32 is used): suitable for low-load scenarios and easy installation;

[0042] Second height (only second limiter 33 is used): provides tensile strength and is suitable for medium-risk environments;

[0043] Third height (double limiter): Double reinforcement to cope with high loads or extreme working conditions and improve structural safety.

[0044] See also Figures 3 to 5 Specifically, the first stopper 32 includes a first mounting hole 321 defined in the connector 31, a second mounting hole 322 defined in the end plate 111 at the end of the steel column 11, and a fixing bolt 323 passing through the first mounting hole 321 and the second mounting hole 322. The rigid connection method of the bolt passing through the mounting holes ensures the joint strength and prevents the steel column 11 from moving.

[0045] Specifically, the second stopper 33 includes a first steel strand 333 hole 331 defined in the connector 31, a second steel strand 333 hole 332 defined in the steel column 11, steel strands 333 disposed in the first and second steel strand 333 holes 331 and 332, and a solidifying fluid. The steel strands 333 provide flexible pretension to offset deformation caused by wind loads or vibration. The solidifying fluid (e.g., pre-cast concrete) fills the joint and solidifies, forming a rigid joint that balances construction flexibility with ultimate stability.

[0046] Specifically, the connector 31 includes a connecting plate 311 and an inner core 312 disposed on both sides of the connecting plate 311. The connecting plate 311 bears the transverse shear force, and the inner core 312 transmits the axial pressure, dispersing the stress concentration and reducing the risk of local deformation.

[0047] To explain in detail the working process of the double limiter, first, the inner core 312 on both sides of the connecting plate 311 is inserted into the two adjacent steel columns 11 (upper steel column 11 and lower steel column 11), and the interior of the upper steel column 11 and the lower steel column 11, except for the middle connection area, and the interior of the inner core 312 are poured with concrete in advance. Next, the steel strand 333 is embedded in the upper steel column 11 and the lower steel column 11. At this time, the two sides of the connecting plate 311 will contact the end plate 111 at the end of the upper steel column 11 and the lower steel column 11. Subsequently, the fixing bolts 323 are sequentially passed through the second mounting hole 322 on the end plate 111 and the first mounting hole 321 of the connecting plate 311, thereby achieving a fixed connection between the upper steel column 11, the connecting plate 311 and the lower steel column 11. In addition, when it is necessary to connect the connecting beam 20 to the two adjacent support columns 10, the connecting beam 20 can be welded to the connecting plate 311 between the two steel columns 11.

[0048] Alternatively, the steel column 11 may be a round steel tube or may be replaced by a square steel tube.

[0049] See also Figures 6 and 7 As shown, in this embodiment, the derrick or tower (steel frame structure system) platform plane layout can adopt the arrangement of steel pipe columns at four corners, three corners or other polygonal corner arrangements, and the steel beams inside the platform are connected by bolts using connecting plates 311;

[0050] It is worth noting that the connecting beam 20 and the connecting plate 311 can be prefabricated as a whole, so that the connecting beam 20 is provided with the connecting plate 311 .

[0051] See also Figure 8 As shown, optionally, lug plates 40 are symmetrically provided on both sides of the steel frame structure system, and the lug plates 40 are connected to the ground induction tensioning machine 41 through cables 42.

[0052] Optionally, a plurality of lugs 40 and two cables 42 are arranged on both sides of the same side of the steel frame structure system. The two cables 42 cross the lugs 40 on both sides from top to bottom and are connected to the induction tensioning machine 41 on the ground.

[0053] The bilaterally symmetrical / cross-arranged cables 42 form a spatial truss effect, significantly enhancing the lateral rigidity.

[0054] Furthermore, the induction tensioning machine 41 is provided with a tension sensing unit; when the tension change of the cable 42 exceeds the set deviation value, the induction tensioning machine 41 applies additional tension to the cable 42 and limits it; if the tension change of the cable 42 exceeds the set deviation value, the additional tension is repeatedly applied until the rated value is reached.

[0055] Furthermore, the connecting member 31 is provided with stiffening ribs 34. The stiffening ribs 34 improve the bending rigidity of the connecting member 31 and prevent local buckling.

[0056] When the wind load is large or other extreme conditions are considered, steel strands 333 cables 42 are set on the inside or outside of the derrick or tower and fixed to the foundation induction tensioner 41; when the steel strands 333 cables 42 are set on the inside of the derrick or tower, ear plates 40 are set at the derrick or tower beam-column nodes, and the steel strands 333 cables 42 on one side of the vertical surface pass through the derrick or tower beam-column node ear plates 40 in a diagonal cross shape from two directions of the top part of the derrick or tower, and are fixed to the foundation induction tensioner 41; When the steel strand 333 and cable 42 are arranged outside the derrick or tower, an ear plate 40 is arranged at the node of the derrick or tower beam column, and the steel strand 333 and cable 42 on the single side are fixed to the basic induction tensioning machine 41 on both sides from the top plate of the derrick or tower. An ear plate 40 is arranged at the node of the derrick or tower beam column and the steel strand 333 and the outer steel strand 333 and cable 42 are fixed. The connection node between the steel strand 333 and the outer steel strand 333 and cable 42 can be connected in a surrounding manner or by a perforated connector 31.

[0057] The induction tensioning machine 41 is fixed to the ground foundation and has an internal tension sensing unit. When high wind loads or other extreme conditions cause the tension of the steel strands 333 cables 42 installed inside or outside the derrick or tower to change by more than a set deviation value, the internal tensioning unit of the induction tensioning machine 41 tensions and limits the steel strands 333 cables 42 by applying additional tension to the steel strands 333 cables 42 with the corresponding change amplitude. After tensioning, if the tension of the steel strands 333 cables 42 installed inside or outside the derrick or tower again changes by more than the set deviation value, the internal tensioning unit of the induction tensioning machine 41 tensions and limits the steel strands 333 cables 42 by a second change amplitude, until the additional tension reaches the set rated value. The intelligent tension sensing unit can also provide effective early warning and add a second line of defense.

[0058] Example 2

[0059] See also Figure 9 , which shows a construction method of a steel frame structure system for a mine in a second embodiment of the present invention, the method comprises the following steps: step S01 to step S04;

[0060] S01, based on the target height of the steel frame structure system, select a first limiter and / or a second limiter of the connection assembly to splice a plurality of steel columns to form a support column;

[0061] S02, forming a corresponding number of support columns based on the target structural shape of the steel frame structure system;

[0062] S03, when splicing to form the support columns, connecting the connecting beam between two adjacent support columns through the connecting members of the connecting assembly to form a steel frame structure system;

[0063] S04, providing ear plates on the connecting member and connecting the induction tensioning machine via cables.

[0064] In summary, the mining steel frame system and its construction method described in the above embodiments of the present invention, through the use of a combination of first and second stoppers, or dual stoppers, enable stable splicing of steel columns at various heights. This effectively addresses the difficulty of traditional fixed supports in dynamically adapting to changes in tunnel height. This avoids the need to replace the entire frame due to height adjustments, saving material costs and shortening the construction period.

[0065] Furthermore, the overall structural design is lightweight and high-strength, offering excellent seismic resistance. Different structural technical solutions can be tailored to different heights, enabling rapid assembly and construction. Standardized support and connector components enable modular assembly of mining steel structures, significantly improving construction efficiency.

[0066] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0067] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A steel frame structure system for mines, characterized in that: It includes at least three vertical support columns and multiple transverse connecting beams, each of the support columns is formed by connecting multiple sections of steel columns from bottom to top, and the two adjacent steel columns, and the connecting beam and the support column are connected by a connecting assembly, so that all the support columns and all the connecting beams form a steel frame structure system; the connecting assembly includes a connecting piece, and a first limit piece and a second limit piece arranged on the connecting piece, the outer diameters of the two ends of the connecting piece are adapted to the inner diameter of the steel column, and the connecting piece connects the two adjacent steel columns through the first limit piece and / or the second limit piece.

2. The mine steel frame structure system according to claim 1, characterized in that: When the steel frame structure system is at the first height: the connecting member connects two adjacent steel columns through the first limiting member; When the steel frame structure system is at the second height: the connecting member connects two adjacent steel columns through the second limiting member; When the steel frame structure system is at the third height: the connecting member connects two adjacent steel columns through the first limiting member and the second limiting member.

3. The mine steel frame structure system according to claim 1, characterized in that: The first limiting member includes a first mounting hole opened on the connecting member, a second mounting hole opened on the end plate of the steel column, and a fixing bolt passing through the first mounting hole and the second mounting hole.

4. The mine steel frame structure system according to claim 1, characterized in that: The second limiting member includes a first steel strand hole opened in the connecting member, a second steel strand hole opened in the steel column, steel strands and coagulation liquid arranged in the first steel strand hole and the second steel strand hole.

5. The mine steel frame structure system according to claim 1, characterized in that: The connecting piece includes a connecting plate and an inner core arranged on both sides of the connecting plate.

6. The mine steel frame structure system according to claim 1, characterized in that: Lug plates are symmetrically arranged on both sides of the steel frame structure system, and the lug plates are connected to the induction tensioning machine on the ground through cables.

7. The mine steel frame structure system according to claim 1, characterized in that: A plurality of lugs and two cables are arranged on both sides of the same side of the steel frame structure system. The two cables cross through the lugs on both sides from top to bottom and are connected to the induction tensioning machine on the ground.

8. The mine steel frame structure system according to claim 6 or 7, characterized in that: The induction tensioning machine is equipped with a tension sensing unit; when the cable tension changes by more than a set deviation value, the induction tensioning machine applies additional tension to the cable and limits the position; if the cable tension changes by more than the set deviation value, additional tension is repeatedly applied until the rated value is reached.

9. The mine steel frame structure system according to claim 1, characterized in that: The connecting piece is provided with a reinforcing rib.

10. A construction method for a mine steel frame structure system according to claims 1 to 9, characterized in that: The method comprises the following steps: Based on the target height of the steel frame structure system, select the first limiter and / or the second limiter of the connection assembly to splice the multiple steel columns to form a support column; Based on the target structural shape of the steel frame structure system, forming a corresponding number of support columns; When the support columns are spliced together, the connecting beam is connected between two adjacent support columns through the connecting pieces of the connecting assembly to form a steel frame structure system; Lug plates are provided on the connecting piece, and are connected to the induction tensioning machine via a cable.

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