Military and civilian dual-purpose detachable house vertical stud and stud connection node design method

Abstract

The invention belongs to the technical field of modular house stud joint connection, and provides a military and civilian dual-purpose detachable house vertical stud and stud joint design method.The military and civilian dual-purpose detachable house vertical stud comprises steel columns, the two ends of each steel column are provided with exposed connection joints respectively, and every two adjacent steel columns are connected end to end through the exposed connection joints; the open connecting node comprises a connecting end, connecting pieces and a node end, the connecting end is arranged on the steel column, the node end is fixedly connected with the connecting end through the multiple connecting pieces, the multiple connecting pieces are used for reserving an operation space between the connecting end and the node end, a fastener is arranged on the node end, and the fastener is fixedly connected with the steel column. Every two adjacent open connecting nodes are detachably connected through the corresponding fastener. The problems that an existing inter-module column connecting joint is difficult to operate during construction, the construction efficiency is low, the quality is difficult to guarantee, and the joint is difficult to detach can be solved.

Description

Technical Field

[0001] The invention belongs to the technical field of modular house column node connection, and in particular relates to a design method for vertical columns and column connection nodes of a military and civilian dual-use detachable house. Background Art

[0002] As a new type of building form, modular buildings are prefabricated in factories, with the characteristics of fast construction speed, short construction time, and detachability. They are reliable in quality and conform to the development trend of the domestic construction industry. Therefore, modular buildings play an important role in military and civilian fields.

[0003] In modular building structures, the structural design and calculation of the connection nodes between module columns are the focus of the entire structural design. At present, the research on modular building connection nodes is still in the development stage. Although a variety of modular building connection nodes have been proposed, these nodes have many problems in practical application, such as: 1) When welding or bolting is used, the construction is complicated and difficult to apply; 2) When wet operation is used, due to its strict construction conditions, complex construction procedures, and the need for post-maintenance, the construction period is long; 3) The node disassembly and recycling are complicated. Summary of the invention

[0004] The purpose of the present invention is to provide a design method for vertical columns and column connection nodes of a dual-use detachable military and civilian house to solve the above problems and achieve the purpose of solving the problems that the existing module column connection nodes are difficult to operate during construction, have low construction efficiency, are difficult to ensure quality, and are difficult to disassemble.

[0005] To achieve the above-mentioned purpose, the present invention provides the following solution: a vertical column for a military and civilian dual-purpose detachable house, comprising:

[0006] Steel columns, each end of which is provided with an exposed connection node, and two adjacent steel columns are connected end to end through the exposed connection node;

[0007] The exposed connection node includes a connection end, a connection piece and a node end. The connection end is arranged on the steel column. The node end is fixedly connected to the connection end through a plurality of connection pieces. The plurality of connection pieces are used to reserve an operating space between the connection end and the node end. A fastener is arranged on the node end. Two adjacent exposed connection nodes can be detachably connected through the fastener.

[0008] Preferably, the steel column is a box-type steel column structure, and the steel column is filled with lightweight concrete;

[0009] The connecting end comprises a connecting plate, and both ends of the steel column are respectively fixedly connected to the connecting plates, and the connecting plates seal the ends of the steel column.

[0010] Preferably, the connecting member includes the node corner column proposed in this patent, and the node corner columns are arranged in four groups, one end of the node corner column is fixedly connected to the edge of the side wall of the connecting plate away from the steel column, and the other end of the node corner column is arranged on the node end, and the four groups of node corner columns are equally spaced.

[0011] Preferably, the node end comprises a node plate, one end of the node corner column away from the connecting plate is fixedly connected to an edge of the node plate, and the fastener is arranged on the node plate.

[0012] Preferably, the fastener comprises a bolt sleeve fixedly passing through the node plate, and a high-strength bolt is connected between two bolt sleeves on two adjacent node plates;

[0013] A plurality of support plates are also fixedly connected to the node plate, and one end of the support plate is fixedly connected to the bolt sleeve.

[0014] The design method of the vertical column connection node of the military and civilian dual-use detachable house includes the following steps:

[0015] S1. Determine the cross-sectional area of ​​the node corner column based on the principle that the axial bearing capacity of the steel column and the node corner column is equal;

[0016] S2. Perform stability calculation based on the principle that the bending bearing capacity of steel columns and node corner columns is equal;

[0017] S3. Determine the grade and diameter of high-strength bolts based on the combined action of tension and shear;

[0018] S4. Determine the thickness of the connecting plate and the node plate.

[0019] Preferably, in step S1, the cross-sectional size of the node corner column is determined according to the principle that the axial bearing capacity of the node corner column is stronger than the axial bearing capacity of the steel column, and the relationship between the two is shown in the following formula:

[0020]

[0021] Where A2 is the cross-sectional area of ​​the node corner column;

[0022] is the bearing capacity stability factor of the steel column;

[0023] f1 is the compressive strength of the steel column;

[0024] is the bearing capacity stability factor of the node corner column;

[0025] f2 is the compressive strength of the node corner column;

[0026] a is the cross-sectional width of the steel column;

[0027] t is the thickness of the steel column section.

[0028] Preferably, in step S2, the structural stability is verified based on the principle that the bending bearing capacity of the node corner column is stronger than the bending bearing capacity of the steel column, and the relationship between the two is as shown in the following formula:

[0029]

[0030] In the formula is the bearing capacity stability factor of the node corner column;

[0031] f2 is the compressive strength of the node corner column;

[0032] A2 is the cross-sectional area of ​​the node corner column;

[0033] M1 is the bending moment on the steel column;

[0034] a is the cross-sectional width of the steel column;

[0035]

[0036] Where N1 is the pressure on the steel column;

[0037] is the bearing capacity stability factor of the node corner column;

[0038] f2 is the compressive strength of the node corner column;

[0039] A2 is the cross-sectional area of ​​the node corner column.

[0040] Preferably, in step S3, the tensile bearing capacity of the high-strength bolt is not less than the tensile force it is subjected to, and at the same time, the high-strength bolt can resist the shear force it is subjected to, so as to determine the diameter of the high-strength bolt. The relationship between the two is as shown in the following formula:

[0041]

[0042] Where d is the diameter of the high-strength bolt;

[0043] f t The tensile force on the high-strength bolts;

[0044] f u It is the tensile strength of high-strength bolts;

[0045]

[0046] Where d is the diameter of the high-strength bolt;

[0047] f v The shear force on the high-strength bolts;

[0048] f u It is the tensile strength of high-strength bolts;

[0049] k is the bolt hole coefficient;

[0050] n f is the anti-slip coefficient of the friction surface;

[0051] μ is the anti-slip coefficient of the friction surface.

[0052] Preferably, in step S4, the relationship between the thickness of the node plate is as follows:

[0053]

[0054] Where h1 is the thickness of the node plate;

[0055] M3 is the bending moment of the node plate;

[0056] f y is the yield strength of the node plate steel;

[0057] The thickness of the connection plate is the same as the thickness of the gusset plate.

[0058] Compared with the prior art, the present invention has the following advantages and technical effects:

[0059] 1. The present invention adopts a factory prefabrication method, fixes the exposed connection nodes at both ends of the steel column, and realizes the rapid connection between the two steel columns by fixing the two node ends with fasteners, which simplifies the construction process, improves the project quality and construction efficiency, and facilitates the realization of standardized operations.

[0060] 2. The present invention reserves an operating space between the connection end and the node end by arranging a plurality of connecting parts, and the fasteners can be directly disassembled through the reserved space. The construction is quick and convenient, the operability is strong, the maintainability and replaceability are high, and the overall service life of the building is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0062] Figure 1 It is a schematic diagram of assembling two adjacent steel columns of the present invention;

[0063] Figure 2 is a schematic diagram of a spacer of the present invention;

[0064] Figure 3 It is a connection diagram of two connecting nodes of the present invention;

[0065] Figure 4It is a schematic diagram of the node plate structure of the present invention;

[0066] Figure 5 It is a schematic diagram of connecting nodes of the present invention;

[0067] Figure 6 is a schematic cross-sectional view of a node corner column of the present invention;

[0068] Figure 7 is a schematic cross-sectional view of a steel column of the present invention;

[0069] Among them, 1. Steel column; 2. Node angle column; 3. High-strength bolts; 4. Support plate; 5. Connecting plate; 6. Node plate; 7. Bolt sleeve. DETAILED DESCRIPTION

[0070] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0071] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0072] Embodiment 1:

[0073] Reference Figure 1-Figure 7 The present invention provides a vertical column for a dual-purpose detachable house for military and civilian use, comprising:

[0074] Steel column 1, both ends of the steel column 1 are respectively provided with exposed connection nodes, and two adjacent steel columns 1 are connected end to end through the exposed connection nodes;

[0075] The exposed connection node includes a connection end, a connection piece and a node end. The connection end is arranged on the steel column 1. The node end is fixedly connected to the connection end through a plurality of connection pieces. The plurality of connection pieces are used to reserve an operating space between the connection end and the node end. Fasteners are arranged on the node end. Two adjacent exposed connection nodes can be detachably connected through the fasteners.

[0076] The node end is fixedly connected to the connection end through a plurality of connectors, and is connected to one end of the steel column 1 through the connection end. When two steel columns 1 need to be connected, the node ends of the two steel columns 1 at one end only need to be connected through fasteners to achieve rapid splicing of the two steel columns 1. The main function of the plurality of connectors is to make a suitable gap between the connection end and the node end. At the same time, through the reserved operation space between the adjacent connectors, the operator can perform construction operations on site through the reserved operation space, and the operability is strong. The main function of the fastener is to achieve the splicing effect between the two steel columns 1 by connecting the two node ends. On the whole, the present invention adopts a factory prefabrication method, fixes the open connection node to the two ends of the steel column, and realizes the rapid connection between the two steel columns by fixing the two node ends with fasteners, simplifies the construction process, improves the engineering quality and construction efficiency, and facilitates the realization of standardized operations. At the same time, the present invention reserves an operation space between the connection end and the node end by setting a plurality of connectors, and the fasteners can be directly disassembled through the reserved space. The construction is quick and convenient, the operability is strong, and it has high maintainability and replaceability, which improves the overall service life of the building.

[0077] Further optimizing the scheme, the steel column 1 is a box-type steel column structure, and the steel column 1 is filled with lightweight concrete;

[0078] The connection end includes a connection plate 5 , and both ends of the steel column 1 are fixedly connected to the connection plates 5 , respectively, and the connection plates 5 seal the ends of the steel column 1 .

[0079] The two ends of the steel column 1 are respectively connected to the connecting plate 5 by welding. After the lightweight concrete is filled into the steel column 1, two connecting plates 5 are connected to the two ends of the steel column 1. The connecting plates 5 are fixed to the ends of the steel column 1, and the steel column 1 can be closed at the same time.

[0080] A further optimized solution is that the connecting parts include the node corner columns 2 proposed in this patent, and four groups of node corner columns 2 are arranged. One end of the node corner column 2 is fixedly connected to the edge of the side wall of the connecting plate 5 away from the steel column 1, and the other end of the node corner column 2 is arranged on the node end, and the four groups of node corner columns 2 are equally spaced.

[0081] In a further optimized solution, the node end includes a node plate 6 , one end of the node corner column 2 away from the connecting plate 5 is fixedly connected to the edge of the node plate 6 , and a fastener is arranged on the node plate 6 .

[0082] like Figure 5 and Figure 6 As shown, the node corner column 2 is connected to the node plate 6 by welding. The node plate 6 and the connection plate 5 are rectangular structures, and the node corner column 2 adopts a right-angle structure, which is welded between the connection plate 5 and the node plate 6 and distributed at the four corners of the connection plate 5 and the node plate 6. There is a large gap between the two node corner columns 2, which can reserve sufficient operating space for on-site construction.

[0083] In a further optimized solution, the fastener includes a bolt sleeve 7 fixedly penetrating the node plate 6, and a high-strength bolt 3 is connected between two bolt sleeves 7 on two adjacent node plates 6;

[0084] A plurality of support plates 4 are also fixedly connected to the node plate 6 , and one end of the support plate 4 is fixedly connected to the bolt sleeve 7 .

[0085] like Figure 4 and Figure 5 As shown, four groups of support plates 4 are welded on the node plate 6, and one end of the support plate 4 is welded to the bolt sleeve 7. The main function of the support plate 4 is to act as a rib plate to ensure the mechanical properties of the node plate 6 and improve the connection stability between the bolt sleeve 7 and the node plate 6.

[0086] The operation process of this embodiment is as follows: place the node plate 6 at the bottom of a steel column 1 to be installed onto the node plate 6 at the top of the installed steel column 1, and align the two bolt sleeves 7 between the two fitted node plates 6. Then, use the operating space reserved between adjacent node corner columns 2 and between the connecting plate 5 and the node plate 6 to insert high-strength bolts 3 into the two bolt sleeves 7, and firmly fix the two node plates 6 through the high-strength bolts 3, thereby realizing the rapid connection of the two steel columns 1.

[0087] Embodiment 2:

[0088] The design method of the vertical column connection node of the military and civilian dual-use detachable house includes the following steps:

[0089] S1. Determine the cross-sectional area of ​​the node corner column 2 based on the principle that the axial bearing capacity of the steel column 1 and the node corner column 2 is equal;

[0090] S2. Perform stability calculation based on the principle that the bending bearing capacity of steel column 1 and node corner column 2 is equal;

[0091] S3. Determine the grade and diameter of the high-strength bolt 3 according to the combined action of tension and shear;

[0092] S4. Determine the thickness of the connecting plate 5 and the node plate 6.

[0093] To further optimize the solution, in step S1, the cross-sectional size of the node corner column 2 is determined based on the principle that the axial bearing capacity of the node corner column 2 is stronger than the axial bearing capacity of the steel column 1. The relationship between the two is shown in the following formula:

[0094]

[0095] Where A2 is the cross-sectional area of ​​the node corner column;

[0096] is the bearing capacity stability factor of the steel column;

[0097] f1 is the compressive strength of the steel column;

[0098] is the bearing capacity stability factor of the node corner column;

[0099] f2 is the compressive strength of the node corner column;

[0100] a is the cross-sectional width of the steel column;

[0101] t is the thickness of the steel column section.

[0102] To further optimize the solution, in step S2, the structural stability is verified based on the principle that the bending bearing capacity of the node corner column 2 is stronger than the bending bearing capacity of the steel column 1. The relationship between the two is shown in the following formula:

[0103]

[0104] In the formula is the bearing capacity stability factor of the node corner column;

[0105] f2 is the compressive strength of the node corner column;

[0106] A2 is the cross-sectional area of ​​the node corner column;

[0107] M1 is the bending moment on the steel column;

[0108] a is the cross-sectional width of the steel column;

[0109]

[0110] Where N1 is the pressure on the steel column;

[0111] is the bearing capacity stability factor of the node corner column;

[0112] f2 is the compressive strength of the node corner column;

[0113] A2 is the cross-sectional area of ​​the node corner column.

[0114] To further optimize the scheme, in step S3, the tensile bearing capacity of the high-strength bolt 3 is not less than the tensile force it is subjected to, and at the same time, the high-strength bolt 3 can resist the shear force it is subjected to, so as to determine the diameter of the high-strength bolt 3, and the relationship between the two is as shown in the following formula:

[0115]

[0116] Where d is the diameter of the high-strength bolt;

[0117] f t The tensile force on the high-strength bolts;

[0118] f u It is the tensile strength of high-strength bolts;

[0119]

[0120] Where d is the diameter of the high-strength bolt;

[0121] f v The shear force on the high-strength bolts;

[0122] f u It is the tensile strength of high-strength bolts;

[0123] k is the bolt hole coefficient;

[0124] n f is the anti-slip coefficient of the friction surface;

[0125] μ is the anti-slip coefficient of the friction surface.

[0126] Further optimizing the solution, in step S4, the thickness relationship of the node plate 6 is as follows:

[0127]

[0128] Where h1 is the thickness of the node plate;

[0129] M3 is the bending moment of the node plate;

[0130] f y is the yield strength of the node plate steel;

[0131] The thickness of the connecting plate 5 is the same as the thickness of the gusset plate 6 .

[0132] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0133] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. The vertical column of the military and civilian dual-purpose detachable house is characterized by: include: A steel column (1), wherein both ends of the steel column (1) are respectively provided with exposed connection nodes, and two adjacent steel columns (1) are connected end to end via the exposed connection nodes; The exposed connection node comprises a connection end, a connection piece and a node end, wherein the connection end is arranged on the steel column (1), and the node end is fixedly connected to the connection end via a plurality of connection pieces, wherein the plurality of connection pieces are used to reserve an operation space between the connection end and the node end, and a fastener is arranged on the node end, and two adjacent exposed connection nodes can be detachably connected via the fastener.

2. The vertical column of the dual-purpose detachable house for military and civilian use according to claim 1 is characterized by: The steel column (1) is a box-type steel column structure, and the steel column (1) is filled with lightweight concrete; The connection end comprises a connection plate (5), and the two ends of the steel column (1) are respectively fixedly connected to the connection plate (5), and the connection plate (5) seals the end of the steel column (1).

3. The vertical column of the detachable dual-purpose military and civilian house according to claim 2 is characterized in that: The connecting member includes a node corner column (2) proposed in the present patent, wherein the node corner column (2) is provided in four groups, one end of the node corner column (2) is fixedly connected to the edge of the side wall of the connecting plate (5) away from the steel column (1), and the other end of the node corner column (2) is provided on the node end, and the four groups of node corner columns (2) are distributed at equal intervals.

4. The vertical column of the detachable dual-purpose military and civilian house according to claim 3 is characterized by: The node end comprises a node plate (6), one end of the node corner column (2) away from the connecting plate (5) is fixedly connected to the edge of the node plate (6), and the fastener is arranged on the node plate (6).

5. The vertical column of the detachable dual-purpose military and civilian house according to claim 4 is characterized in that: The fastener comprises a bolt sleeve (7) fixedly passing through the node plate (6), and a high-strength bolt (3) is connected between two bolt sleeves (7) on two adjacent node plates (6); A plurality of support plates (4) are also fixedly connected to the node plate (6), and one end of the support plate (4) is fixedly connected to the bolt sleeve (7).

6. A method for designing connection nodes of vertical columns of dual-purpose detachable houses, based on the vertical columns of dual-purpose detachable houses of claim 5, characterized in that: The steps include: S1. Determine the cross-sectional area size of the node corner column (2) based on the principle that the axial bearing capacity of the steel column (1) and the node corner column (2) is equal; S2. Perform stability calculation based on the principle that the bending bearing capacity of the steel column (1) and the node corner column (2) is equal; S3. Determine the grade and diameter of the high-strength bolt (3) based on the combined action of tension and shear; S4. Determine the thickness of the connecting plate (5) and the node plate (6).

7. The method for designing vertical column connection nodes of a military-civilian dual-purpose detachable house according to claim 6 is characterized in that: In step S1, the cross-sectional dimensions of the node corner column (2) are determined based on the principle that the axial bearing capacity of the node corner column (2) is equal to that of the steel column (1). The relationship between the two is shown in the following formula: Where A2 is the cross-sectional area of ​​the node corner column; is the bearing capacity stability factor of the steel column; f1 is the compressive strength of the steel column; is the bearing capacity stability factor of the node corner column; f2 is the compressive strength of the node corner column; a is the cross-sectional width of the steel column; t is the thickness of the steel column section.

8. The method for designing vertical column connection nodes of a military-civilian dual-purpose detachable house according to claim 6 is characterized by: In step S2, the structural stability is verified based on the principle that the bending bearing capacity of the node corner column (2) is stronger than the bending bearing capacity of the steel column (1). The relationship between the two is as follows: In the formula is the bearing capacity stability factor of the node corner column; f2 is the compressive strength of the node corner column; A2 is the cross-sectional area of ​​the node corner column; M1 is the bending moment on the steel column; a is the cross-sectional width of the steel column; Where N1 is the pressure on the steel column; is the bearing capacity stability factor of the node corner column; f2 is the compressive strength of the node corner column; A2 is the cross-sectional area of ​​the node corner column.

9. The method for designing vertical column connection nodes of a military-civilian dual-purpose detachable house according to claim 6 is characterized by: In step S3, the tensile bearing capacity of the high-strength bolt (3) is made not less than the tensile force it is subjected to, and at the same time, the high-strength bolt (3) can resist the shear force it is subjected to, so as to determine the diameter of the high-strength bolt (3). The relationship between the two is shown in the following formula: Where d is the diameter of the high-strength bolt; f t The tensile force on the high-strength bolts; f u It is the tensile strength of high-strength bolts; Where d is the diameter of the high-strength bolt; f v The shear force on the high-strength bolts; f u It is the tensile strength of high-strength bolts; k is the bolt hole coefficient; n f is the anti-slip coefficient of the friction surface; μ is the anti-slip coefficient of the friction surface.

10. The method for designing vertical column connection nodes of a military-civilian dual-purpose detachable house according to claim 6 is characterized in that: In step S4, the thickness relationship of the gusset plate (6) is as follows: Where h1 is the thickness of the node plate; M3 is the bending moment of the node plate; f y is the yield strength of the node plate steel; The thickness of the connection plate (5) is the same as the thickness of the gusset plate (6).

Images